From 02ede85b539a89a44a71ce098f09a9553a3a6890 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 25 Oct 2009 14:36:12 -0400
Subject: [PATCH 001/533] first underscore.js commit -- pulled out from
 documentcloud's core.js

---
 underscore.js | 368 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 368 insertions(+)
 create mode 100644 underscore.js

diff --git a/underscore.js b/underscore.js
new file mode 100644
index 000000000..74d1d9385
--- /dev/null
+++ b/underscore.js
@@ -0,0 +1,368 @@
+// Javascript can be so much more pleasant when it's functional -- re-implement
+// a bunch of utility methods from Prototype and Steele's Functional...
+window._ = {
+      
+  // The cornerstone, an each implementation.
+  // Handles objects implementing forEach, _each, arrays, and raw objects.
+  each : function(obj, iterator, context) {
+    var index = 0;
+    try {
+      if (obj.forEach) {
+        obj.forEach(iterator, context);
+      } else if (obj.length) {
+        for (var i=0; i<obj.length; i++) {
+          iterator.call(context, obj[i], i);
+        }
+      } else if (obj._each) {
+        obj._each(function(value) {
+          iterator.call(context, value, index++);
+        });
+      } else {
+        var i = 0;
+        for (var key in obj) {
+          var value = obj[key], pair = [key, value];
+          pair.key = key;
+          pair.value = value;
+          iterator.call(context, pair, i++);
+        }
+      }
+    } catch(e) {
+      if (e != '__break__') throw e;
+    }
+    return obj;
+  },
+  
+  // Determine whether all of the elements match a truth test. Delegate to
+  // Javascript 1.6's every(), if it is present.
+  all : function(obj, iterator, context) {
+    if (obj.every) return obj.every(iterator, context);
+    var result = true;
+    _.each(obj, function(value, index) {
+      result = result && !!iterator.call(context, value, index);
+      if (!result) throw '__break__';
+    });
+    return result;
+  },
+  
+  // Determine if at least one element in the object matches a truth test. Use
+  // Javascript 1.6's some(), if it exists.
+  any : function(obj, iterator, context) {
+    if (obj.some) return obj.some(iterator, context);
+    var result = false;
+    _.each(obj, function(value, index) {
+      if (result = !!iterator.call(context, value, index)) throw '__break__';
+    });
+    return result;
+  },
+  
+  // Return the results of applying the iterator to each element. Use Javascript
+  // 1.6's version of map, if possible.
+  map : function(obj, iterator, context) {
+    if (obj.map) return obj.map(iterator, context);
+    var results = [];
+    _.each(obj, function(value, index) {
+      results.push(iterator.call(context, value, index));
+    });
+    return results;
+  },
+  
+  // Return the first value which passes a truth test.
+  detect : function(obj, iterator, context) {
+    var result;
+    _.each(obj, function(value, index) {
+      if (iterator.call(context, value, index)) {
+        result = value;
+        throw '__break__';
+      }
+    });
+    return result;
+  },
+  
+  // Return all the elements that pass a truth test. Use Javascript 1.6's
+  // filter(), if it exists.
+  select : function(obj, iterator, context) {
+    if (obj.filter) return obj.filter(iterator, context);
+    var results = [];
+    _.each(obj, function(value, index) {
+      if (iterator.call(context, value, index)) results.push(value);
+    });
+    return results;
+  },
+  
+  // Determine if a given value is included in the object, based on '=='.
+  include : function(obj, target) {
+    if (_.isArray(obj)) if (obj.indexOf(target) != -1) return true;
+    var found = false;
+    _.each(obj, function(value) {
+      if (value == target) {
+        found = true;
+        throw '__break__';
+      }
+    });
+    return found;
+  },
+  
+  // Aka reduce. Inject builds up a single result from a list of values.
+  inject : function(obj, memo, iterator, context) {
+    _.each(obj, function(value, index) {
+      memo = iterator.call(context, memo, value, index);
+    });
+    return memo;
+  },
+  
+  // Invoke a method with arguments on every item in a collection.
+  invoke : function(obj, method) {
+    var args = _.toArray(arguments).slice(2);
+    return _.map(obj, function(value) {
+      return (method ? value[method] : value).apply(value, args);
+    });
+  },
+  
+  // Return the maximum item or (item-based computation).
+  max : function(obj, iterator, context) {
+    var result;
+    _.each(obj, function(value, index) {
+      value = iterator ? iterator.call(context, value, index) : value;
+      if (result == null || value >= result) result = value;
+    });
+    return result;
+  },
+  
+  // Return the minimum element (or element-based computation).
+  min : function(obj, iterator, context) {
+    var result;
+    _.each(obj, function(value, index) {
+      value = iterator ? iterator.call(context, value, index) : value;
+      if (result == null || value < result) result = value;
+    });
+    return result;
+  },
+  
+  // Optimized version of a common use case of map: fetching a property.
+  pluck : function(obj, key) {
+    var results = [];
+    _.each(obj, function(value){ results.push(value[key]); });
+    return results;
+  },
+  
+  // Return all the elements for which a truth test fails.
+  reject : function(obj, iterator, context) {
+    var results = [];
+    _.each(obj, function(value, index) {
+      if (!iterator.call(context, value, index)) results.push(value);
+    });
+    return results;
+  },
+  
+  // Sort the object's values by a criteria produced by an iterator.
+  sortBy : function(obj, iterator, context) {
+    return _.pluck(_.map(obj, function(value, index) {
+      return {
+        value : value,
+        criteria : iterator.call(context, value, index)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }), 'value');
+  },
+  
+  // Use a comparator function to figure out at what index an object should
+  // be inserted so as to maintain order. Uses binary search.
+  sortedIndex : function(array, comparator, obj) {
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >> 1;
+      comparator(array[mid], obj) < 0 ? low = mid + 1 : high = mid;
+    }
+    return low;
+  },
+  
+  // Convert anything iterable into a real, live array.
+  toArray : function(iterable) {
+    if (!iterable) return [];
+    if (_.isArray(iterable)) return iterable;
+    return _.map(iterable, function(val){ return val; });
+  },
+  
+  // Return the number of elements in an object.
+  size : function(obj) {
+    _.toArray(obj).length;
+  },
+  
+  //------------- The following methods only apply to arrays. -----------------
+  
+  // Get the first element of an array.
+  first : function(array) {
+    return array[0];
+  },
+  
+  // Get the last element of an array.
+  last : function(array) {
+    return array[array.length - 1];
+  },
+  
+  // Trim out all falsy values from an array.
+  compact : function(array) {
+    return _.select(array, function(value){ return !!value; });
+  },
+  
+  // Return a completely flattened version of an array.
+  flatten : function(array) {
+    return _.inject(array, [], function(memo, value) {
+      if (_.isArray(value)) return memo.concat(_.flatten(value));
+      memo.push(value);
+      return memo;
+    });
+  },
+  
+  // Return a version of the array that does not contain the specified value.
+  without : function(array) {
+    var values = array.slice.call(arguments, 0);
+    return _.select(function(value){ return !_.include(values, value); });
+  },
+  
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  uniq : function(array, sorted) {
+    return _.inject(array, [], function(memo, el, i) {
+      if (0 == i || (sorted ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
+      return memo;
+    });
+  },
+  
+  // Produce an array that contains every item shared between two given arrays.
+  intersect : function(array1, array2) {
+    return _.select(_.uniq(array1), function(item1) {
+      return _.detect(array2, function(item2) { return item1 === item2; });
+    });
+  },
+  
+  // If the browser doesn't supply us with indexOf, we might need this function.
+  // Return the position of the first occurence of an item in an array,
+  // or -1 if the item is not included in the array.
+  // indexOf : function(array, item) {
+  //   var length = array.length;
+  //   for (i=0; i<length; i++) if (array[i] === item) return i;
+  //   return -1;
+  // }
+  
+  /* ---------------- The following methods apply to objects ---------------- */
+  
+  // Retrieve the names of an object's properties.
+  keys : function(obj) {
+    return _.pluck(obj, 'key');
+  },
+  
+  // Retrieve the values of an object's properties.
+  values : function(obj) {
+    return _.pluck(obj, 'value');
+  },
+  
+  // Extend a given object with all of the properties in a source object.
+  extend : function(destination, source) {
+    for (var property in source) destination[property] = source[property];
+    return destination;
+  },
+  
+  // Create a (shallow-cloned) duplicate of an object.
+  clone : function(obj) {
+    return _.extend({}, obj);
+  },
+  
+  // Is a given value a DOM element?
+  isElement : function(obj) {
+    return !!(obj && obj.nodeType == 1);
+  },
+  
+  // Is a given value a real Array?
+  isArray : function(obj) {
+    return Object.prototype.toString.call(obj) == '[object Array]';
+  },
+  
+  // Is a given value a Function?
+  isFunction : function(obj) {
+    return typeof obj == 'function';
+  },
+  
+  // Is a given variable undefined?
+  isUndefined : function(obj) {
+    return typeof obj == 'undefined';
+  },
+  
+  // Convert any value into printable string form.
+  toString : function(obj) {
+    return obj == null ? '' : String(obj);
+  },
+  
+  // Create a function bound to a given object (assigning 'this', and arguments,
+  // optionally).
+  bind : function(func, context) {
+    if (!context) return func;
+    var args = _.toArray(arguments).slice(2);
+    return function() {
+      var a = args.concat(_.toArray(arguments));
+      return func.apply(context, a);
+    };
+  },
+  
+  // Bind all of an object's methods to that object. Useful for ensuring that 
+  // all callbacks defined on an object belong to it.
+  bindAll : function() {
+    var args = _.toArray(arguments);
+    var context = args.pop();
+    _.each(args, function(methodName) {
+      context[methodName] = _.bind(context[methodName], context);
+    });
+  },
+  
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  uniqueId : function(prefix) {
+    var id = this._idCounter = (this._idCounter || 0) + 1;
+    return prefix ? prefix + id : id;
+  },
+  
+  // Perform a deep comparison to check if two objects are equal.
+  isEqual : function(a, b) {
+    // Check object identity.
+    if (a === b) return true;
+    // Different types?
+    var at = typeof(a), bt = typeof(b);
+    if (at != bt) return false;
+    // Basic equality test (watch out for coercions).
+    if (a == b) return true;
+    // One of them implements an isEqual()?
+    if (a.isEqual) return a.isEqual(b);
+    // Nothing else worked, deep compare the contents.
+    return at === 'object' && _.isEqualContents(a, b);
+  },
+  
+  // Objects have equal contents if they have the same keys, and all the values
+  // are equal (as defined by _.isEqual).
+  _isEqualContents : function(a, b) {
+    var aKeys = _.keys(a), bKeys = _.keys(b);
+    if (aKeys.length != bKeys.length) return false;
+    for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
+    return true; 
+  },
+  
+  // Javascript templating a-la ERB, pilfered from John Resig's 
+  // "Secrets of the Javascript Ninja", page 83.
+  template : function(str, data) {
+    var fn = new Function('obj', 
+      'var p=[],print=function(){p.push.apply(p,arguments);};' +
+      'with(obj){p.push(\'' +
+      str
+        .replace(/[\r\t\n]/g, " ") 
+        .split("<%").join("\t") 
+        .replace(/((^|%>)[^\t]*)'/g, "$1\r") 
+        .replace(/\t=(.*?)%>/g, "',$1,'") 
+        .split("\t").join("');") 
+        .split("%>").join("p.push('") 
+        .split("\r").join("\\'") 
+    + "');}return p.join('');");
+    return data ? fn(data) : fn;  
+  }
+  
+};

From fe7156e4ea6d26894f1270563c8bf290364e1bed Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 25 Oct 2009 20:36:28 -0400
Subject: [PATCH 002/533] first round of tests...

---
 test/example.js       |  29 ++
 test/test.html        |  18 +
 test/test.js          |  59 +++
 test/vendor/jquery.js |  19 +
 test/vendor/qunit.css |  17 +
 test/vendor/qunit.js  | 997 ++++++++++++++++++++++++++++++++++++++++++
 underscore.js         |   2 +
 7 files changed, 1141 insertions(+)
 create mode 100644 test/example.js
 create mode 100644 test/test.html
 create mode 100644 test/test.js
 create mode 100644 test/vendor/jquery.js
 create mode 100644 test/vendor/qunit.css
 create mode 100644 test/vendor/qunit.js

diff --git a/test/example.js b/test/example.js
new file mode 100644
index 000000000..48ed383fe
--- /dev/null
+++ b/test/example.js
@@ -0,0 +1,29 @@
+$(document).ready(function(){
+  
+  test("a basic test example", function() {
+    ok( true, "this test is fine" );
+    var value = "hello";
+    equals( "hello", value, "We expect value to be hello" );
+  });
+  
+  module("Module A");
+  
+  test("first test within module", function() {
+    ok( true, "all pass" );
+  });
+  
+  test("second test within module", function() {
+    ok( true, "all pass" );
+  });
+  
+  module("Module B");
+  
+  test("some other test", function() {
+    expect(2);
+    equals( true, false, "failing test" );
+    equals( true, true, "passing test" );
+  });
+
+});
+
+
diff --git a/test/test.html b/test/test.html
new file mode 100644
index 000000000..962718958
--- /dev/null
+++ b/test/test.html
@@ -0,0 +1,18 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
+                    "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+  <link rel="stylesheet" href="vendor/qunit.css" type="text/css" media="screen" />
+  <script type="text/javascript" src="vendor/jquery.js"></script>
+  <script type="text/javascript" src="vendor/qunit.js"></script>
+  <script type="text/javascript" src="../underscore.js"></script>
+  <script type="text/javascript" src="test.js"></script>
+  
+</head>
+<body>
+  <h1 id="qunit-header">Underscore Test Suite</h1>
+ <h2 id="qunit-banner"></h2>
+ <h2 id="qunit-userAgent"></h2>
+ <ol id="qunit-tests"></ol>
+</body>
+</html>
\ No newline at end of file
diff --git a/test/test.js b/test/test.js
new file mode 100644
index 000000000..569cbe455
--- /dev/null
+++ b/test/test.js
@@ -0,0 +1,59 @@
+$(document).ready(function() {
+  
+  module("Collection functions (each, any, select, and so on...)");
+    
+  test("collections: _.each", function() {
+    _.each(numbers, function(num, i){
+      equals(num, i + 1, 'each iterators provide value and iteration count');
+    });
+  });
+  
+  test('collections: _.each and throwing "__break__"', function() {
+    var answer = null;
+    _.each(numbers, function(num){
+      if ((answer = num) == 2) throw '__break__';
+    });
+    equals(2, answer, 'the loop broke in the middle');
+  });
+  
+  test('collections: _.each can take a context object', function() {
+    var answers = [];
+    _.each(numbers, function(num) {
+      answers.push(num * this.multiplier);
+    }, {multiplier : 5});
+    equals('5, 10, 15', answers.join(', '), 'context object property accessed');
+  });
+  
+  test('collections: _.all', function() {
+    ok(_.all([]), 'the empty set');
+    ok(_.all([true, true, true]), 'all true values');
+    ok(!_.all([true, false, true]), 'one false value');
+    ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
+    ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
+  });
+  
+  test('collections: _.any', function() {
+    ok(!_.any([]), 'the empty set');
+    ok(!_.any([false, false, false]), 'all false values');
+    ok(_.any([false, false, true]), 'one true value');
+    ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
+    ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
+  });
+  
+  test('collections: _.map', function() {
+    var doubled = _.map(numbers, function(num){ return num * 2; });
+    equals('2, 4, 6', doubled.join(', '), 'doubled numbers');
+    var tripled = _.map(numbers, function(num){ return num * this.multiplier; }, {multiplier : 3});
+    equals('3, 6, 9', tripled.join(', '), 'tripled numbers with context');
+  });
+  
+  test('collections: _.detect', function() {
+    var result = _.detect(numbers, function(num){ return num * 2 == 4; });
+    equals(2, result, 'found the first "2" and broke the loop');
+  });
+  
+  test('collections: _.select', function() {
+    var evens = _.select(function([1,2,3,4,5,6], ))
+  });
+  
+});
\ No newline at end of file
diff --git a/test/vendor/jquery.js b/test/vendor/jquery.js
new file mode 100644
index 000000000..b1ae21d8b
--- /dev/null
+++ b/test/vendor/jquery.js
@@ -0,0 +1,19 @@
+/*
+ * jQuery JavaScript Library v1.3.2
+ * http://jquery.com/
+ *
+ * Copyright (c) 2009 John Resig
+ * Dual licensed under the MIT and GPL licenses.
+ * http://docs.jquery.com/License
+ *
+ * Date: 2009-02-19 17:34:21 -0500 (Thu, 19 Feb 2009)
+ * Revision: 6246
+ */
+(function(){var l=this,g,y=l.jQuery,p=l.$,o=l.jQuery=l.$=function(E,F){return new o.fn.init(E,F)},D=/^[^<]*(<(.|\s)+>)[^>]*$|^#([\w-]+)$/,f=/^.[^:#\[\.,]*$/;o.fn=o.prototype={init:function(E,H){E=E||document;if(E.nodeType){this[0]=E;this.length=1;this.context=E;return this}if(typeof E==="string"){var G=D.exec(E);if(G&&(G[1]||!H)){if(G[1]){E=o.clean([G[1]],H)}else{var I=document.getElementById(G[3]);if(I&&I.id!=G[3]){return o().find(E)}var F=o(I||[]);F.context=document;F.selector=E;return F}}else{return o(H).find(E)}}else{if(o.isFunction(E)){return o(document).ready(E)}}if(E.selector&&E.context){this.selector=E.selector;this.context=E.context}return this.setArray(o.isArray(E)?E:o.makeArray(E))},selector:"",jquery:"1.3.2",size:function(){return this.length},get:function(E){return E===g?Array.prototype.slice.call(this):this[E]},pushStack:function(F,H,E){var G=o(F);G.prevObject=this;G.context=this.context;if(H==="find"){G.selector=this.selector+(this.selector?" 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\ No newline at end of file
diff --git a/test/vendor/qunit.css b/test/vendor/qunit.css
new file mode 100644
index 000000000..660cd3c1a
--- /dev/null
+++ b/test/vendor/qunit.css
@@ -0,0 +1,17 @@
+h1#qunit-header { padding: 15px; font-size: large; background-color: #06b; color: white; font-family: 'trebuchet ms', verdana, arial; margin: 0; }
+h1#qunit-header a { color: white; }
+
+h2#qunit-banner { height: 2em; border-bottom: 1px solid white; background-color: #eee; margin: 0; font-family: 'trebuchet ms', verdana, arial; }
+h2#qunit-banner.pass { background-color: green; }
+h2#qunit-banner.fail { background-color: red; }
+
+h2#qunit-userAgent { padding: 10px; background-color: #eee; color: black; margin: 0; font-size: small; font-weight: normal; font-family: 'trebuchet ms', verdana, arial; font-size: 10pt; }
+
+div#qunit-testrunner-toolbar { background: #eee; border-top: 1px solid black; padding: 10px; font-family: 'trebuchet ms', verdana, arial; margin: 0; font-size: 10pt; }
+
+ol#qunit-tests { font-family: 'trebuchet ms', verdana, arial; font-size: 10pt; }
+ol#qunit-tests li strong { cursor:pointer; }
+ol#qunit-tests .pass { color: green; } 
+ol#qunit-tests .fail { color: red; } 
+
+p#qunit-testresult { margin-left: 1em; font-size: 10pt; font-family: 'trebuchet ms', verdana, arial; }
\ No newline at end of file
diff --git a/test/vendor/qunit.js b/test/vendor/qunit.js
new file mode 100644
index 000000000..1fc2fe13a
--- /dev/null
+++ b/test/vendor/qunit.js
@@ -0,0 +1,997 @@
+/*
+ * QUnit - A JavaScript Unit Testing Framework
+ * 
+ * http://docs.jquery.com/QUnit
+ *
+ * Copyright (c) 2009 John Resig, Jörn Zaefferer
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ */
+
+(function(window) {
+
+var QUnit = {
+
+	// Initialize the configuration options
+	init: function init() {
+		config = {
+			stats: { all: 0, bad: 0 },
+			moduleStats: { all: 0, bad: 0 },
+			started: +new Date,
+			blocking: false,
+			autorun: false,
+			assertions: [],
+			filters: [],
+			queue: []
+		};
+
+		var tests = id("qunit-tests"),
+			banner = id("qunit-banner"),
+			result = id("qunit-testresult");
+
+		if ( tests ) {
+			tests.innerHTML = "";
+		}
+
+		if ( banner ) {
+			banner.className = "";
+		}
+
+		if ( result ) {
+			result.parentNode.removeChild( result );
+		}
+	},
+	
+	// call on start of module test to prepend name to all tests
+	module: function module(name, testEnvironment) {
+
+		synchronize(function() {
+			if ( config.currentModule ) {
+				QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
+			}
+
+			config.currentModule = name;
+			config.moduleTestEnvironment = testEnvironment;
+			config.moduleStats = { all: 0, bad: 0 };
+
+			QUnit.moduleStart( name, testEnvironment );
+		});
+	},
+
+	asyncTest: function asyncTest(testName, expected, callback) {
+		if ( arguments.length === 2 ) {
+			callback = expected;
+			expected = 0;
+		}
+
+		QUnit.test(testName, expected, callback, true);
+	},
+	
+	test: function test(testName, expected, callback, async) {
+		var name = testName, testEnvironment = {};
+
+		if ( arguments.length === 2 ) {
+			callback = expected;
+			expected = null;
+		}
+
+		if ( config.currentModule ) {
+			name = config.currentModule + " module: " + name;
+		}
+
+		if ( !validTest(name) ) {
+			return;
+		}
+
+		synchronize(function() {
+			QUnit.testStart( testName );
+
+			testEnvironment = extend({
+				setup: function() {},
+				teardown: function() {}
+			}, config.moduleTestEnvironment);
+
+			config.assertions = [];
+			config.expected = null;
+
+			if ( arguments.length >= 3 ) {
+				config.expected = callback;
+				callback = arguments[2];
+			}
+
+			try {
+				if ( !config.pollution ) {
+					saveGlobal();
+				}
+
+				testEnvironment.setup.call(testEnvironment);
+			} catch(e) {
+				QUnit.ok( false, "Setup failed on " + name + ": " + e.message );
+			}
+
+			if ( async ) {
+				QUnit.stop();
+			}
+
+			try {
+				callback.call(testEnvironment);
+			} catch(e) {
+				fail("Test " + name + " died, exception and test follows", e, callback);
+				QUnit.ok( false, "Died on test #" + (config.assertions.length + 1) + ": " + e.message );
+				// else next test will carry the responsibility
+				saveGlobal();
+
+				// Restart the tests if they're blocking
+				if ( config.blocking ) {
+					start();
+				}
+			}
+		});
+
+		synchronize(function() {
+			try {
+				checkPollution();
+				testEnvironment.teardown.call(testEnvironment);
+			} catch(e) {
+				QUnit.ok( false, "Teardown failed on " + name + ": " + e.message );
+			}
+
+			try {
+				QUnit.reset();
+			} catch(e) {
+				fail("reset() failed, following Test " + name + ", exception and reset fn follows", e, reset);
+			}
+
+			if ( config.expected && config.expected != config.assertions.length ) {
+				QUnit.ok( false, "Expected " + config.expected + " assertions, but " + config.assertions.length + " were run" );
+			}
+
+			var good = 0, bad = 0,
+				tests = id("qunit-tests");
+
+			config.stats.all += config.assertions.length;
+			config.moduleStats.all += config.assertions.length;
+
+			if ( tests ) {
+				var ol  = document.createElement("ol");
+				ol.style.display = "none";
+
+				for ( var i = 0; i < config.assertions.length; i++ ) {
+					var assertion = config.assertions[i];
+
+					var li = document.createElement("li");
+					li.className = assertion.result ? "pass" : "fail";
+					li.innerHTML = assertion.message || "(no message)";
+					ol.appendChild( li );
+
+					if ( assertion.result ) {
+						good++;
+					} else {
+						bad++;
+						config.stats.bad++;
+						config.moduleStats.bad++;
+					}
+				}
+
+				var b = document.createElement("strong");
+				b.innerHTML = name + " <b style='color:black;'>(<b class='fail'>" + bad + "</b>, <b class='pass'>" + good + "</b>, " + config.assertions.length + ")</b>";
+				
+				addEvent(b, "click", function() {
+					var next = b.nextSibling, display = next.style.display;
+					next.style.display = display === "none" ? "block" : "none";
+				});
+				
+				addEvent(b, "dblclick", function(e) {
+					var target = (e || window.event).target;
+					if ( target.nodeName.toLowerCase() === "strong" ) {
+						var text = "", node = target.firstChild;
+
+						while ( node.nodeType === 3 ) {
+							text += node.nodeValue;
+							node = node.nextSibling;
+						}
+
+						text = text.replace(/(^\s*|\s*$)/g, "");
+
+						if ( window.location ) {
+							window.location.href = window.location.href.match(/^(.+?)(\?.*)?$/)[1] + "?" + encodeURIComponent(text);
+						}
+					}
+				});
+
+				var li = document.createElement("li");
+				li.className = bad ? "fail" : "pass";
+				li.appendChild( b );
+				li.appendChild( ol );
+				tests.appendChild( li );
+
+				if ( bad ) {
+					var toolbar = id("qunit-testrunner-toolbar");
+					if ( toolbar ) {
+						toolbar.style.display = "block";
+						id("qunit-filter-pass").disabled = null;
+						id("qunit-filter-missing").disabled = null;
+					}
+				}
+
+			} else {
+				for ( var i = 0; i < config.assertions.length; i++ ) {
+					if ( !config.assertions[i].result ) {
+						bad++;
+						config.stats.bad++;
+						config.moduleStats.bad++;
+					}
+				}
+			}
+
+			QUnit.testDone( testName, bad, config.assertions.length );
+
+			if ( !window.setTimeout && !config.queue.length ) {
+				done();
+			}
+		});
+
+		if ( window.setTimeout && !config.doneTimer ) {
+			config.doneTimer = window.setTimeout(function(){
+				if ( !config.queue.length ) {
+					done();
+				} else {
+					synchronize( done );
+				}
+			}, 13);
+		}
+	},
+	
+	/**
+	 * Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
+	 */
+	expect: function expect(asserts) {
+		config.expected = asserts;
+	},
+
+	/**
+	 * Asserts true.
+	 * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
+	 */
+	ok: function ok(a, msg) {
+		QUnit.log(a, msg);
+
+		config.assertions.push({
+			result: !!a,
+			message: msg
+		});
+	},
+
+	/**
+	 * Checks that the first two arguments are equal, with an optional message.
+	 * Prints out both actual and expected values.
+	 *
+	 * Prefered to ok( actual == expected, message )
+	 *
+	 * @example equals( format("Received {0} bytes.", 2), "Received 2 bytes." );
+	 *
+	 * @param Object actual
+	 * @param Object expected
+	 * @param String message (optional)
+	 */
+	equals: function equals(actual, expected, message) {
+		push(expected == actual, actual, expected, message);
+	},
+	
+	same: function(a, b, message) {
+		push(QUnit.equiv(a, b), a, b, message);
+	},
+	
+	start: function start() {
+		// A slight delay, to avoid any current callbacks
+		if ( window.setTimeout ) {
+			window.setTimeout(function() {
+				if ( config.timeout ) {
+					clearTimeout(config.timeout);
+				}
+
+				config.blocking = false;
+				process();
+			}, 13);
+		} else {
+			config.blocking = false;
+			process();
+		}
+	},
+	
+	stop: function stop(timeout) {
+		config.blocking = true;
+
+		if ( timeout && window.setTimeout ) {
+			config.timeout = window.setTimeout(function() {
+				QUnit.ok( false, "Test timed out" );
+				QUnit.start();
+			}, timeout);
+		}
+	},
+	
+	/**
+	 * Resets the test setup. Useful for tests that modify the DOM.
+	 */
+	reset: function reset() {
+		if ( window.jQuery ) {
+			jQuery("#main").html( config.fixture );
+			jQuery.event.global = {};
+			jQuery.ajaxSettings = extend({}, config.ajaxSettings);
+		}
+	},
+	
+	/**
+	 * Trigger an event on an element.
+	 *
+	 * @example triggerEvent( document.body, "click" );
+	 *
+	 * @param DOMElement elem
+	 * @param String type
+	 */
+	triggerEvent: function triggerEvent( elem, type, event ) {
+		if ( document.createEvent ) {
+			event = document.createEvent("MouseEvents");
+			event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
+				0, 0, 0, 0, 0, false, false, false, false, 0, null);
+			elem.dispatchEvent( event );
+
+		} else if ( elem.fireEvent ) {
+			elem.fireEvent("on"+type);
+		}
+	},
+	
+	// Logging callbacks
+	done: function done(failures, total) {},
+	log: function log(result, message) {},
+	testStart: function testStart(name) {},
+	testDone: function testDone(name, failures, total) {},
+	moduleStart: function moduleStart(name, testEnvironment) {},
+	moduleDone: function moduleDone(name, failures, total) {}
+};
+
+// Maintain internal state
+var config = {
+	// The queue of tests to run
+	queue: [],
+
+	// block until document ready
+	blocking: true
+};
+
+// Load paramaters
+(function() {
+	var location = window.location || { search: "", protocol: "file:" },
+		GETParams = location.search.slice(1).split('&');
+
+	for ( var i = 0; i < GETParams.length; i++ ) {
+		GETParams[i] = decodeURIComponent( GETParams[i] );
+		if ( GETParams[i] === "noglobals" ) {
+			GETParams.splice( i, 1 );
+			i--;
+			config.noglobals = true;
+		}
+	}
+	
+	// restrict modules/tests by get parameters
+	config.filters = GETParams;
+	
+	// Figure out if we're running the tests from a server or not
+	QUnit.isLocal = !!(location.protocol === 'file:');
+})();
+
+// Expose the API as global variables, unless an 'exports'
+// object exists, in that case we assume we're in CommonJS
+if ( typeof exports === "undefined" || typeof require === "undefined" ) {
+	extend(window, QUnit);
+	window.QUnit = QUnit;
+} else {
+	extend(exports, QUnit);
+	exports.QUnit = QUnit;
+}
+
+if ( typeof document === "undefined" || document.readyState === "complete" ) {
+	config.autorun = true;
+}
+
+addEvent(window, "load", function() {
+	// Initialize the config, saving the execution queue
+	var oldconfig = extend({}, config);
+	QUnit.init();
+	extend(config, oldconfig);
+
+	config.blocking = false;
+
+	var userAgent = id("qunit-userAgent");
+	if ( userAgent ) {
+		userAgent.innerHTML = navigator.userAgent;
+	}
+	
+	var toolbar = id("qunit-testrunner-toolbar");
+	if ( toolbar ) {
+		toolbar.style.display = "none";
+		
+		var filter = document.createElement("input");
+		filter.type = "checkbox";
+		filter.id = "qunit-filter-pass";
+		filter.disabled = true;
+		addEvent( filter, "click", function() {
+			var li = document.getElementsByTagName("li");
+			for ( var i = 0; i < li.length; i++ ) {
+				if ( li[i].className.indexOf("pass") > -1 ) {
+					li[i].style.display = filter.checked ? "none" : "block";
+				}
+			}
+		});
+		toolbar.appendChild( filter );
+
+		var label = document.createElement("label");
+		label.setAttribute("for", "filter-pass");
+		label.innerHTML = "Hide passed tests";
+		toolbar.appendChild( label );
+
+		var missing = document.createElement("input");
+		missing.type = "checkbox";
+		missing.id = "qunit-filter-missing";
+		missing.disabled = true;
+		addEvent( missing, "click", function() {
+			var li = document.getElementsByTagName("li");
+			for ( var i = 0; i < li.length; i++ ) {
+				if ( li[i].className.indexOf("fail") > -1 && li[i].innerHTML.indexOf('missing test - untested code is broken code') > - 1 ) {
+					li[i].parentNode.parentNode.style.display = missing.checked ? "none" : "block";
+				}
+			}
+		});
+		toolbar.appendChild( missing );
+
+		label = document.createElement("label");
+		label.setAttribute("for", "filter-missing");
+		label.innerHTML = "Hide missing tests (untested code is broken code)";
+		toolbar.appendChild( label );
+	}
+
+	var main = id('main');
+	if ( main ) {
+		config.fixture = main.innerHTML;
+	}
+
+	if ( window.jQuery ) {
+		config.ajaxSettings = window.jQuery.ajaxSettings;
+	}
+
+	QUnit.start();
+});
+
+function done() {
+	if ( config.doneTimer && window.clearTimeout ) {
+		window.clearTimeout( config.doneTimer );
+		config.doneTimer = null;
+	}
+
+	if ( config.queue.length ) {
+		config.doneTimer = window.setTimeout(function(){
+			if ( !config.queue.length ) {
+				done();
+			} else {
+				synchronize( done );
+			}
+		}, 13);
+
+		return;
+	}
+
+	config.autorun = true;
+
+	// Log the last module results
+	if ( config.currentModule ) {
+		QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
+	}
+
+	var banner = id("qunit-banner"),
+		tests = id("qunit-tests"),
+		html = ['Tests completed in ',
+		+new Date - config.started, ' milliseconds.<br/>',
+		'<span class="bad">', config.stats.all - config.stats.bad, '</span> tests of <span class="all">', config.stats.all, '</span> passed, ', config.stats.bad,' failed.'].join('');
+
+	if ( banner ) {
+		banner.className += " " + (config.stats.bad ? "fail" : "pass");
+	}
+
+	if ( tests ) {	
+		var result = id("qunit-testresult");
+
+		if ( !result ) {
+			result = document.createElement("p");
+			result.id = "qunit-testresult";
+			result.className = "result";
+			tests.parentNode.insertBefore( result, tests.nextSibling );
+		}
+
+		result.innerHTML = html;
+	}
+
+	QUnit.done( config.stats.bad, config.stats.all );
+}
+
+function validTest( name ) {
+	var i = config.filters.length,
+		run = false;
+
+	if ( !i ) {
+		return true;
+	}
+	
+	while ( i-- ) {
+		var filter = config.filters[i],
+			not = filter.charAt(0) == '!';
+
+		if ( not ) {
+			filter = filter.slice(1);
+		}
+
+		if ( name.indexOf(filter) !== -1 ) {
+			return !not;
+		}
+
+		if ( not ) {
+			run = true;
+		}
+	}
+
+	return run;
+}
+
+function push(result, actual, expected, message) {
+	message = message || (result ? "okay" : "failed");
+	QUnit.ok( result, result ? message + ": " + expected : message + ", expected: " + QUnit.jsDump.parse(expected) + " result: " + QUnit.jsDump.parse(actual) );
+}
+
+function synchronize( callback ) {
+	config.queue.push( callback );
+
+	if ( config.autorun && !config.blocking ) {
+		process();
+	}
+}
+
+function process() {
+	while ( config.queue.length && !config.blocking ) {
+		config.queue.shift()();
+	}
+}
+
+function saveGlobal() {
+	config.pollution = [];
+	
+	if ( config.noglobals ) {
+		for ( var key in window ) {
+			config.pollution.push( key );
+		}
+	}
+}
+
+function checkPollution( name ) {
+	var old = config.pollution;
+	saveGlobal();
+	
+	var newGlobals = diff( old, config.pollution );
+	if ( newGlobals.length > 0 ) {
+		ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
+		config.expected++;
+	}
+
+	var deletedGlobals = diff( config.pollution, old );
+	if ( deletedGlobals.length > 0 ) {
+		ok( false, "Deleted global variable(s): " + deletedGlobals.join(", ") );
+		config.expected++;
+	}
+}
+
+// returns a new Array with the elements that are in a but not in b
+function diff( a, b ) {
+	var result = a.slice();
+	for ( var i = 0; i < result.length; i++ ) {
+		for ( var j = 0; j < b.length; j++ ) {
+			if ( result[i] === b[j] ) {
+				result.splice(i, 1);
+				i--;
+				break;
+			}
+		}
+	}
+	return result;
+}
+
+function fail(message, exception, callback) {
+	if ( typeof console !== "undefined" && console.error && console.warn ) {
+		console.error(message);
+		console.error(exception);
+		console.warn(callback.toString());
+
+	} else if ( window.opera && opera.postError ) {
+		opera.postError(message, exception, callback.toString);
+	}
+}
+
+function extend(a, b) {
+	for ( var prop in b ) {
+		a[prop] = b[prop];
+	}
+
+	return a;
+}
+
+function addEvent(elem, type, fn) {
+	if ( elem.addEventListener ) {
+		elem.addEventListener( type, fn, false );
+	} else if ( elem.attachEvent ) {
+		elem.attachEvent( "on" + type, fn );
+	} else {
+		fn();
+	}
+}
+
+function id(name) {
+	return !!(typeof document !== "undefined" && document && document.getElementById) &&
+		document.getElementById( name );
+}
+
+// Test for equality any JavaScript type.
+// Discussions and reference: http://philrathe.com/articles/equiv
+// Test suites: http://philrathe.com/tests/equiv
+// Author: Philippe Rathé <prathe@gmail.com>
+QUnit.equiv = function () {
+
+    var innerEquiv; // the real equiv function
+    var callers = []; // stack to decide between skip/abort functions
+
+
+    // Determine what is o.
+    function hoozit(o) {
+        if (o.constructor === String) {
+            return "string";
+            
+        } else if (o.constructor === Boolean) {
+            return "boolean";
+
+        } else if (o.constructor === Number) {
+
+            if (isNaN(o)) {
+                return "nan";
+            } else {
+                return "number";
+            }
+
+        } else if (typeof o === "undefined") {
+            return "undefined";
+
+        // consider: typeof null === object
+        } else if (o === null) {
+            return "null";
+
+        // consider: typeof [] === object
+        } else if (o instanceof Array) {
+            return "array";
+        
+        // consider: typeof new Date() === object
+        } else if (o instanceof Date) {
+            return "date";
+
+        // consider: /./ instanceof Object;
+        //           /./ instanceof RegExp;
+        //          typeof /./ === "function"; // => false in IE and Opera,
+        //                                          true in FF and Safari
+        } else if (o instanceof RegExp) {
+            return "regexp";
+
+        } else if (typeof o === "object") {
+            return "object";
+
+        } else if (o instanceof Function) {
+            return "function";
+        } else {
+            return undefined;
+        }
+    }
+
+    // Call the o related callback with the given arguments.
+    function bindCallbacks(o, callbacks, args) {
+        var prop = hoozit(o);
+        if (prop) {
+            if (hoozit(callbacks[prop]) === "function") {
+                return callbacks[prop].apply(callbacks, args);
+            } else {
+                return callbacks[prop]; // or undefined
+            }
+        }
+    }
+    
+    var callbacks = function () {
+
+        // for string, boolean, number and null
+        function useStrictEquality(b, a) {
+            if (b instanceof a.constructor || a instanceof b.constructor) {
+                // to catch short annotaion VS 'new' annotation of a declaration
+                // e.g. var i = 1;
+                //      var j = new Number(1);
+                return a == b;
+            } else {
+                return a === b;
+            }
+        }
+
+        return {
+            "string": useStrictEquality,
+            "boolean": useStrictEquality,
+            "number": useStrictEquality,
+            "null": useStrictEquality,
+            "undefined": useStrictEquality,
+
+            "nan": function (b) {
+                return isNaN(b);
+            },
+
+            "date": function (b, a) {
+                return hoozit(b) === "date" && a.valueOf() === b.valueOf();
+            },
+
+            "regexp": function (b, a) {
+                return hoozit(b) === "regexp" &&
+                    a.source === b.source && // the regex itself
+                    a.global === b.global && // and its modifers (gmi) ...
+                    a.ignoreCase === b.ignoreCase &&
+                    a.multiline === b.multiline;
+            },
+
+            // - skip when the property is a method of an instance (OOP)
+            // - abort otherwise,
+            //   initial === would have catch identical references anyway
+            "function": function () {
+                var caller = callers[callers.length - 1];
+                return caller !== Object &&
+                        typeof caller !== "undefined";
+            },
+
+            "array": function (b, a) {
+                var i;
+                var len;
+
+                // b could be an object literal here
+                if ( ! (hoozit(b) === "array")) {
+                    return false;
+                }
+
+                len = a.length;
+                if (len !== b.length) { // safe and faster
+                    return false;
+                }
+                for (i = 0; i < len; i++) {
+                    if ( ! innerEquiv(a[i], b[i])) {
+                        return false;
+                    }
+                }
+                return true;
+            },
+
+            "object": function (b, a) {
+                var i;
+                var eq = true; // unless we can proove it
+                var aProperties = [], bProperties = []; // collection of strings
+
+                // comparing constructors is more strict than using instanceof
+                if ( a.constructor !== b.constructor) {
+                    return false;
+                }
+
+                // stack constructor before traversing properties
+                callers.push(a.constructor);
+
+                for (i in a) { // be strict: don't ensures hasOwnProperty and go deep
+
+                    aProperties.push(i); // collect a's properties
+
+                    if ( ! innerEquiv(a[i], b[i])) {
+                        eq = false;
+                    }
+                }
+
+                callers.pop(); // unstack, we are done
+
+                for (i in b) {
+                    bProperties.push(i); // collect b's properties
+                }
+
+                // Ensures identical properties name
+                return eq && innerEquiv(aProperties.sort(), bProperties.sort());
+            }
+        };
+    }();
+
+    innerEquiv = function () { // can take multiple arguments
+        var args = Array.prototype.slice.apply(arguments);
+        if (args.length < 2) {
+            return true; // end transition
+        }
+
+        return (function (a, b) {
+            if (a === b) {
+                return true; // catch the most you can
+            } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || hoozit(a) !== hoozit(b)) {
+                return false; // don't lose time with error prone cases
+            } else {
+                return bindCallbacks(a, callbacks, [b, a]);
+            }
+
+        // apply transition with (1..n) arguments
+        })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1));
+    };
+
+    return innerEquiv;
+
+}();
+
+/**
+ * jsDump
+ * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
+ * Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
+ * Date: 5/15/2008
+ * @projectDescription Advanced and extensible data dumping for Javascript.
+ * @version 1.0.0
+ * @author Ariel Flesler
+ * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
+ */
+QUnit.jsDump = (function() {
+	function quote( str ) {
+		return '"' + str.toString().replace(/"/g, '\\"') + '"';
+	};
+	function literal( o ) {
+		return o + '';	
+	};
+	function join( pre, arr, post ) {
+		var s = jsDump.separator(),
+			base = jsDump.indent(),
+			inner = jsDump.indent(1);
+		if ( arr.join )
+			arr = arr.join( ',' + s + inner );
+		if ( !arr )
+			return pre + post;
+		return [ pre, inner + arr, base + post ].join(s);
+	};
+	function array( arr ) {
+		var i = arr.length,	ret = Array(i);					
+		this.up();
+		while ( i-- )
+			ret[i] = this.parse( arr[i] );				
+		this.down();
+		return join( '[', ret, ']' );
+	};
+	
+	var reName = /^function (\w+)/;
+	
+	var jsDump = {
+		parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
+			var	parser = this.parsers[ type || this.typeOf(obj) ];
+			type = typeof parser;			
+			
+			return type == 'function' ? parser.call( this, obj ) :
+				   type == 'string' ? parser :
+				   this.parsers.error;
+		},
+		typeOf:function( obj ) {
+			var type = typeof obj,
+				f = 'function';//we'll use it 3 times, save it
+			return type != 'object' && type != f ? type :
+				!obj ? 'null' :
+				obj.exec ? 'regexp' :// some browsers (FF) consider regexps functions
+				obj.getHours ? 'date' :
+				obj.scrollBy ?  'window' :
+				obj.nodeName == '#document' ? 'document' :
+				obj.nodeName ? 'node' :
+				obj.item ? 'nodelist' : // Safari reports nodelists as functions
+				obj.callee ? 'arguments' :
+				obj.call || obj.constructor != Array && //an array would also fall on this hack
+					(obj+'').indexOf(f) != -1 ? f : //IE reports functions like alert, as objects
+				'length' in obj ? 'array' :
+				type;
+		},
+		separator:function() {
+			return this.multiline ?	this.HTML ? '<br />' : '\n' : this.HTML ? '&nbsp;' : ' ';
+		},
+		indent:function( extra ) {// extra can be a number, shortcut for increasing-calling-decreasing
+			if ( !this.multiline )
+				return '';
+			var chr = this.indentChar;
+			if ( this.HTML )
+				chr = chr.replace(/\t/g,'   ').replace(/ /g,'&nbsp;');
+			return Array( this._depth_ + (extra||0) ).join(chr);
+		},
+		up:function( a ) {
+			this._depth_ += a || 1;
+		},
+		down:function( a ) {
+			this._depth_ -= a || 1;
+		},
+		setParser:function( name, parser ) {
+			this.parsers[name] = parser;
+		},
+		// The next 3 are exposed so you can use them
+		quote:quote, 
+		literal:literal,
+		join:join,
+		//
+		_depth_: 1,
+		// This is the list of parsers, to modify them, use jsDump.setParser
+		parsers:{
+			window: '[Window]',
+			document: '[Document]',
+			error:'[ERROR]', //when no parser is found, shouldn't happen
+			unknown: '[Unknown]',
+			'null':'null',
+			undefined:'undefined',
+			'function':function( fn ) {
+				var ret = 'function',
+					name = 'name' in fn ? fn.name : (reName.exec(fn)||[])[1];//functions never have name in IE
+				if ( name )
+					ret += ' ' + name;
+				ret += '(';
+				
+				ret = [ ret, this.parse( fn, 'functionArgs' ), '){'].join('');
+				return join( ret, this.parse(fn,'functionCode'), '}' );
+			},
+			array: array,
+			nodelist: array,
+			arguments: array,
+			object:function( map ) {
+				var ret = [ ];
+				this.up();
+				for ( var key in map )
+					ret.push( this.parse(key,'key') + ': ' + this.parse(map[key]) );
+				this.down();
+				return join( '{', ret, '}' );
+			},
+			node:function( node ) {
+				var open = this.HTML ? '&lt;' : '<',
+					close = this.HTML ? '&gt;' : '>';
+					
+				var tag = node.nodeName.toLowerCase(),
+					ret = open + tag;
+					
+				for ( var a in this.DOMAttrs ) {
+					var val = node[this.DOMAttrs[a]];
+					if ( val )
+						ret += ' ' + a + '=' + this.parse( val, 'attribute' );
+				}
+				return ret + close + open + '/' + tag + close;
+			},
+			functionArgs:function( fn ) {//function calls it internally, it's the arguments part of the function
+				var l = fn.length;
+				if ( !l ) return '';				
+				
+				var args = Array(l);
+				while ( l-- )
+					args[l] = String.fromCharCode(97+l);//97 is 'a'
+				return ' ' + args.join(', ') + ' ';
+			},
+			key:quote, //object calls it internally, the key part of an item in a map
+			functionCode:'[code]', //function calls it internally, it's the content of the function
+			attribute:quote, //node calls it internally, it's an html attribute value
+			string:quote,
+			date:quote,
+			regexp:literal, //regex
+			number:literal,
+			'boolean':literal
+		},
+		DOMAttrs:{//attributes to dump from nodes, name=>realName
+			id:'id',
+			name:'name',
+			'class':'className'
+		},
+		HTML:true,//if true, entities are escaped ( <, >, \t, space and \n )
+		indentChar:'   ',//indentation unit
+		multiline:true //if true, items in a collection, are separated by a \n, else just a space.
+	};
+
+	return jsDump;
+})();
+
+})(this);
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 74d1d9385..6659c9c81 100644
--- a/underscore.js
+++ b/underscore.js
@@ -35,6 +35,7 @@ window._ = {
   // Determine whether all of the elements match a truth test. Delegate to
   // Javascript 1.6's every(), if it is present.
   all : function(obj, iterator, context) {
+    iterator = iterator || function(v){ return v; };
     if (obj.every) return obj.every(iterator, context);
     var result = true;
     _.each(obj, function(value, index) {
@@ -47,6 +48,7 @@ window._ = {
   // Determine if at least one element in the object matches a truth test. Use
   // Javascript 1.6's some(), if it exists.
   any : function(obj, iterator, context) {
+    iterator = iterator || function(v) { return v; };
     if (obj.some) return obj.some(iterator, context);
     var result = false;
     _.each(obj, function(value, index) {

From 5c46c60b06a210d702b75aa3493655eb39c152ce Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 08:40:14 -0400
Subject: [PATCH 003/533] finished off the complete test suite for underscore
 -- let's polish off the corners and provide some docs

---
 test/arrays.js      |  45 ++++++++++
 test/collections.js | 123 +++++++++++++++++++++++++++
 test/example.js     |  29 -------
 test/functions.js   |  25 ++++++
 test/objects.js     |  64 ++++++++++++++
 test/test.html      |   6 +-
 test/test.js        |  59 -------------
 test/utility.js     |  20 +++++
 underscore.js       | 202 ++++++++++++++++++++++----------------------
 9 files changed, 385 insertions(+), 188 deletions(-)
 create mode 100644 test/arrays.js
 create mode 100644 test/collections.js
 delete mode 100644 test/example.js
 create mode 100644 test/functions.js
 create mode 100644 test/objects.js
 delete mode 100644 test/test.js
 create mode 100644 test/utility.js

diff --git a/test/arrays.js b/test/arrays.js
new file mode 100644
index 000000000..90a1e2e25
--- /dev/null
+++ b/test/arrays.js
@@ -0,0 +1,45 @@
+$(document).ready(function() {
+  
+  module("Array-only functions (last, compact, uniq, and so on...)");
+    
+  test("arrays: first", function() {
+    equals(_.first([1,2,3]), 1, 'can pull out the first element of an array');
+  });
+  
+  test("arrays: last", function() {
+    equals(_.last([1,2,3]), 3, 'can pull out the last element of an array');
+  });
+  
+  test("arrays: compact", function() {
+    equals(_.compact([0, 1, false, 2, false, 3]).length, 3, 'can trim out all falsy values');
+  });
+  
+  test("arrays: flatten", function() {
+    var list = [1, [2], [3, [[[4]]]]];
+    equals(_.flatten(list).join(', '), '1, 2, 3, 4', 'can flatten nested arrays');
+  });
+  
+  test("arrays: without", function() {
+    var list = [1, 2, 1, 0, 3, 1, 4];
+    equals(_.without(list, 0, 1).join(', '), '2, 3, 4', 'can remove all instances of an object');
+  });
+  
+  test("arrays: uniq", function() {
+    var list = [1, 2, 1, 3, 1, 4];
+    equals(_.uniq(list).join(', '), '1, 2, 3, 4', 'can find the unique values of an unsorted array');
+    var list = [1, 1, 1, 2, 2, 3];
+    equals(_.uniq(list, true).join(', '), '1, 2, 3', 'can find the unique values of a sorted array faster');
+  });
+  
+  test("arrays: intersect", function() {
+    var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho'];
+    equals(_.intersect(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
+  });
+  
+  test("arrays: indexOf", function() {
+    var numbers = [1, 2, 3];
+    numbers.indexOf = null;
+    equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
+  });
+  
+});
diff --git a/test/collections.js b/test/collections.js
new file mode 100644
index 000000000..1cb3f9e5f
--- /dev/null
+++ b/test/collections.js
@@ -0,0 +1,123 @@
+$(document).ready(function() {
+  
+  module("Collection functions (each, any, select, and so on...)");
+    
+  test("collections: each", function() {
+    _.each([1, 2, 3], function(num, i){
+      equals(num, i + 1, 'each iterators provide value and iteration count');
+    });
+  });
+  
+  test('collections: each and throwing "__break__"', function() {
+    var answer = null;
+    _.each([1, 2, 3], function(num){
+      if ((answer = num) == 2) throw '__break__';
+    });
+    equals(answer, 2, 'the loop broke in the middle');
+  });
+  
+  test('collections: each can take a context object', function() {
+    var answers = [];
+    _.each([1, 2, 3], function(num) {
+      answers.push(num * this.multiplier);
+    }, {multiplier : 5});
+    equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
+  });
+  
+  test('collections: all', function() {
+    ok(_.all([]), 'the empty set');
+    ok(_.all([true, true, true]), 'all true values');
+    ok(!_.all([true, false, true]), 'one false value');
+    ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
+    ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
+  });
+  
+  test('collections: any', function() {
+    ok(!_.any([]), 'the empty set');
+    ok(!_.any([false, false, false]), 'all false values');
+    ok(_.any([false, false, true]), 'one true value');
+    ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
+    ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
+  });
+  
+  test('collections: map', function() {
+    var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
+    equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
+    var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
+    equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
+  });
+  
+  test('collections: inject', function() {
+    var sum = _.inject([1,2,3], 0, function(sum, num){ return sum + num; });
+    equals(sum, 6, 'can sum up an array');
+  });
+  
+  test('collections: detect', function() {
+    var result = _.detect([1, 2, 3], function(num){ return num * 2 == 4; });
+    equals(result, 2, 'found the first "2" and broke the loop');
+  });
+  
+  test('collections: select', function() {
+    var evens = _.select([1,2,3,4,5,6], function(num){ return num % 2 == 0; });
+    equals(evens.join(', '), '2, 4, 6', 'selected each even number');
+  });
+  
+  test('collections: reject', function() {
+    var odds = _.reject([1,2,3,4,5,6], function(num){ return num % 2 == 0; });
+    equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
+  });
+  
+  test('collections: include', function() {
+    ok(_.include([1,2,3], 2), 'two is in the array');
+    ok(!_.include([1,3,9], 2), 'two is not in the array');
+    ok(_.include({moe:1, larry:3, curly:9}, 3), '_.include on objects checks their values');
+  });
+  
+  test('collections: invoke', function() {
+    var list = [[5, 1, 7], [3, 2, 1]];
+    var result = _.invoke(list, 'sort');
+    equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
+    equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
+  });
+  
+  test('collections: pluck', function() {
+    var people = [{name : 'moe', age : 30}, {name : 'curly', age : 50}];
+    equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'pulls names out of objects');
+  });
+  
+  test('collections: max', function() {
+    equals(3, _.max([1, 2, 3]), 'can perform a regular Math.max');
+    var neg = _.max([1, 2, 3], function(num){ return -num; });
+    equals(neg, 1, 'can perform a computation-based max');
+  });
+  
+  test('collections: min', function() {
+    equals(1, _.min([1, 2, 3]), 'can perform a regular Math.min');
+    var neg = _.min([1, 2, 3], function(num){ return -num; });
+    equals(neg, 3, 'can perform a computation-based min');
+  });
+  
+  test('collections: sortBy', function() {
+    var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}];
+    people = _.sortBy(people, function(person){ return person.age; });
+    equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
+  });
+  
+  test('collections: sortedIndex', function() {
+    var numbers = [10, 20, 30, 40, 50], num = 35;
+    var index = _.sortedIndex(numbers, function(a, b) { return a < b ? -1 : a > b ? 1 : 0; }, num);
+    equals(index, 3, '35 should be inserted at index 3');
+  });
+  
+  test('collections: toArray', function() {
+    ok(!_.isArray(arguments), 'arguments object is not an array');
+    ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
+    var numbers = _.toArray({one : 1, two : 2, three : 3});
+    equals(_.pluck(numbers, '0').join(', '), 'one, two, three', 'object flattened into array');
+  });
+  
+  test('collections: size', function() {
+    equals(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
+  });
+  
+});
diff --git a/test/example.js b/test/example.js
deleted file mode 100644
index 48ed383fe..000000000
--- a/test/example.js
+++ /dev/null
@@ -1,29 +0,0 @@
-$(document).ready(function(){
-  
-  test("a basic test example", function() {
-    ok( true, "this test is fine" );
-    var value = "hello";
-    equals( "hello", value, "We expect value to be hello" );
-  });
-  
-  module("Module A");
-  
-  test("first test within module", function() {
-    ok( true, "all pass" );
-  });
-  
-  test("second test within module", function() {
-    ok( true, "all pass" );
-  });
-  
-  module("Module B");
-  
-  test("some other test", function() {
-    expect(2);
-    equals( true, false, "failing test" );
-    equals( true, true, "passing test" );
-  });
-
-});
-
-
diff --git a/test/functions.js b/test/functions.js
new file mode 100644
index 000000000..0f9362def
--- /dev/null
+++ b/test/functions.js
@@ -0,0 +1,25 @@
+$(document).ready(function() {
+  
+  module("Function functions (bind, bindAll, and so on...)");
+    
+  test("functions: bind", function() {
+    var context = {name : 'moe'};
+    var func = function() { return "name: " + this.name; };
+    var bound = _.bind(func, context);
+    equals(bound(), 'name: moe', 'can bind a function to a context');
+  });
+  
+  test("functions: bindAll", function() {
+    var curly = {name : 'curly'}, moe = {
+      name    : 'moe',
+      getName : function() { return 'name: ' + this.name; },
+      sayHi   : function() { return 'hi: ' + this.name; }
+    };
+    curly.getName = moe.getName;
+    _.bindAll('getName', 'sayHi', moe);
+    curly.sayHi = moe.sayHi;
+    equals(curly.getName(), 'name: curly', 'unbound function is bound to current object');
+    equals(curly.sayHi(), 'hi: moe', 'bound function is still bound to original object');
+  });
+  
+});
diff --git a/test/objects.js b/test/objects.js
new file mode 100644
index 000000000..347230b59
--- /dev/null
+++ b/test/objects.js
@@ -0,0 +1,64 @@
+$(document).ready(function() {
+  
+  module("Object functions (values, extend, isEqual, and so on...)");
+    
+  test("objects: keys", function() {
+    equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
+  });
+  
+  test("objects: values", function() {
+    equals(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
+  });
+  
+  test("objects: extend", function() {
+    var source = {name : 'moe'}, dest = {age : 50};
+    _.extend(dest, source);
+    equals(dest.name, 'moe', 'can extend an object with the attributes of another');
+  });
+  
+  test("objects: clone", function() {
+    var moe = {name : 'moe', lucky : [13, 27, 34]};
+    var clone = _.clone(moe);
+    equals(clone.name, 'moe', 'the clone as the attributes of the original');
+    clone.name = 'curly';
+    ok(clone.name == 'curly' && moe.name == 'moe', 'clones can change shallow attributes without affecting the original');
+    clone.lucky.push(101);
+    equals(_.last(moe.lucky), 101, 'changes to deep attributes are shared with the original');
+  });
+  
+  test("objects: isEqual", function() {
+    var moe   = {name : 'moe', lucky : [13, 27, 34]};
+    var clone = {name : 'moe', lucky : [13, 27, 34]};
+    ok(moe != clone, 'basic equality between objects is false');
+    ok(_.isEqual(moe, clone), 'deep equality is true');
+  });
+  
+  test("objects: isElement", function() {
+    ok(!_.isElement('div'), 'strings are not dom elements');
+    ok(_.isElement($('html')[0]), 'the html tag is a DOM element');
+  });
+  
+  test("objects: isArray", function() {
+    ok(!_.isArray(arguments), 'the arguments object is not an array');
+    ok(_.isArray([1, 2, 3]), 'but arrays are');
+  });
+  
+  test("objects: isFunction", function() {
+    ok(!_.isFunction([1, 2, 3]), 'arrays are not functions');
+    ok(!_.isFunction('moe'), 'strings are not functions');
+    ok(_.isFunction(_.isFunction), 'but functions are');
+  });
+  
+  test("objects: isUndefined", function() {
+    ok(!_.isUndefined(1), 'numbers are defined');
+    ok(!_.isUndefined(null), 'null is defined');
+    ok(!_.isUndefined(false), 'false is defined');
+    ok(_.isUndefined(), 'nothing is undefined');
+    ok(_.isUndefined(undefined), 'undefined is undefined');
+  });
+  
+  test("objects: toString", function() {
+    equals(_.toString([1, 2, 3]), '1,2,3', 'object can be converted to printable strings');
+  });
+
+});
diff --git a/test/test.html b/test/test.html
index 962718958..9c8220344 100644
--- a/test/test.html
+++ b/test/test.html
@@ -6,7 +6,11 @@
   <script type="text/javascript" src="vendor/jquery.js"></script>
   <script type="text/javascript" src="vendor/qunit.js"></script>
   <script type="text/javascript" src="../underscore.js"></script>
-  <script type="text/javascript" src="test.js"></script>
+  <script type="text/javascript" src="collections.js"></script>
+  <script type="text/javascript" src="arrays.js"></script>
+  <script type="text/javascript" src="functions.js"></script>
+  <script type="text/javascript" src="objects.js"></script>
+  <script type="text/javascript" src="utility.js"></script>
   
 </head>
 <body>
diff --git a/test/test.js b/test/test.js
deleted file mode 100644
index 569cbe455..000000000
--- a/test/test.js
+++ /dev/null
@@ -1,59 +0,0 @@
-$(document).ready(function() {
-  
-  module("Collection functions (each, any, select, and so on...)");
-    
-  test("collections: _.each", function() {
-    _.each(numbers, function(num, i){
-      equals(num, i + 1, 'each iterators provide value and iteration count');
-    });
-  });
-  
-  test('collections: _.each and throwing "__break__"', function() {
-    var answer = null;
-    _.each(numbers, function(num){
-      if ((answer = num) == 2) throw '__break__';
-    });
-    equals(2, answer, 'the loop broke in the middle');
-  });
-  
-  test('collections: _.each can take a context object', function() {
-    var answers = [];
-    _.each(numbers, function(num) {
-      answers.push(num * this.multiplier);
-    }, {multiplier : 5});
-    equals('5, 10, 15', answers.join(', '), 'context object property accessed');
-  });
-  
-  test('collections: _.all', function() {
-    ok(_.all([]), 'the empty set');
-    ok(_.all([true, true, true]), 'all true values');
-    ok(!_.all([true, false, true]), 'one false value');
-    ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
-    ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
-  });
-  
-  test('collections: _.any', function() {
-    ok(!_.any([]), 'the empty set');
-    ok(!_.any([false, false, false]), 'all false values');
-    ok(_.any([false, false, true]), 'one true value');
-    ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
-    ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
-  });
-  
-  test('collections: _.map', function() {
-    var doubled = _.map(numbers, function(num){ return num * 2; });
-    equals('2, 4, 6', doubled.join(', '), 'doubled numbers');
-    var tripled = _.map(numbers, function(num){ return num * this.multiplier; }, {multiplier : 3});
-    equals('3, 6, 9', tripled.join(', '), 'tripled numbers with context');
-  });
-  
-  test('collections: _.detect', function() {
-    var result = _.detect(numbers, function(num){ return num * 2 == 4; });
-    equals(2, result, 'found the first "2" and broke the loop');
-  });
-  
-  test('collections: _.select', function() {
-    var evens = _.select(function([1,2,3,4,5,6], ))
-  });
-  
-});
\ No newline at end of file
diff --git a/test/utility.js b/test/utility.js
new file mode 100644
index 000000000..cfaaaace3
--- /dev/null
+++ b/test/utility.js
@@ -0,0 +1,20 @@
+$(document).ready(function() {
+  
+  module("Utility functions (uniqueId, template)");
+    
+  test("utility: uniqueId", function() {
+    var ids = [], i = 0;
+    while(i++ < 100) ids.push(_.uniqueId());
+    equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
+  });
+  
+  test("utility: template", function() {
+    var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
+    var result = basicTemplate({thing : 'This'});
+    equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
+    var fancyTemplate = _.template("<% for (key in people) { %><li><%= people[key] %></li><% } %>");
+    result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
+    equals(result, "<li>Moe</li><li>Larry</li><li>Curly</li>", 'can run arbitrary javascript in templates');
+  });
+  
+});
diff --git a/underscore.js b/underscore.js
index 6659c9c81..c32e87a2d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -10,13 +10,9 @@ window._ = {
       if (obj.forEach) {
         obj.forEach(iterator, context);
       } else if (obj.length) {
-        for (var i=0; i<obj.length; i++) {
-          iterator.call(context, obj[i], i);
-        }
-      } else if (obj._each) {
-        obj._each(function(value) {
-          iterator.call(context, value, index++);
-        });
+        for (var i=0; i<obj.length; i++) iterator.call(context, obj[i], i);
+      } else if (obj.each) {
+        obj.each(function(value) { iterator.call(context, value, index++); });
       } else {
         var i = 0;
         for (var key in obj) {
@@ -68,6 +64,14 @@ window._ = {
     return results;
   },
   
+  // Aka reduce. Inject builds up a single result from a list of values.
+  inject : function(obj, memo, iterator, context) {
+    _.each(obj, function(value, index) {
+      memo = iterator.call(context, memo, value, index);
+    });
+    return memo;
+  },
+  
   // Return the first value which passes a truth test.
   detect : function(obj, iterator, context) {
     var result;
@@ -91,12 +95,22 @@ window._ = {
     return results;
   },
   
-  // Determine if a given value is included in the object, based on '=='.
+  // Return all the elements for which a truth test fails.
+  reject : function(obj, iterator, context) {
+    var results = [];
+    _.each(obj, function(value, index) {
+      if (!iterator.call(context, value, index)) results.push(value);
+    });
+    return results;
+  },
+  
+  // Determine if a given value is included in the array or object, 
+  // based on '=='.
   include : function(obj, target) {
-    if (_.isArray(obj)) if (obj.indexOf(target) != -1) return true;
+    if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
-    _.each(obj, function(value) {
-      if (value == target) {
+    _.each(obj, function(pair) {
+      if (pair.value == target) {
         found = true;
         throw '__break__';
       }
@@ -104,14 +118,6 @@ window._ = {
     return found;
   },
   
-  // Aka reduce. Inject builds up a single result from a list of values.
-  inject : function(obj, memo, iterator, context) {
-    _.each(obj, function(value, index) {
-      memo = iterator.call(context, memo, value, index);
-    });
-    return memo;
-  },
-  
   // Invoke a method with arguments on every item in a collection.
   invoke : function(obj, method) {
     var args = _.toArray(arguments).slice(2);
@@ -120,26 +126,6 @@ window._ = {
     });
   },
   
-  // Return the maximum item or (item-based computation).
-  max : function(obj, iterator, context) {
-    var result;
-    _.each(obj, function(value, index) {
-      value = iterator ? iterator.call(context, value, index) : value;
-      if (result == null || value >= result) result = value;
-    });
-    return result;
-  },
-  
-  // Return the minimum element (or element-based computation).
-  min : function(obj, iterator, context) {
-    var result;
-    _.each(obj, function(value, index) {
-      value = iterator ? iterator.call(context, value, index) : value;
-      if (result == null || value < result) result = value;
-    });
-    return result;
-  },
-  
   // Optimized version of a common use case of map: fetching a property.
   pluck : function(obj, key) {
     var results = [];
@@ -147,13 +133,26 @@ window._ = {
     return results;
   },
   
-  // Return all the elements for which a truth test fails.
-  reject : function(obj, iterator, context) {
-    var results = [];
+  // Return the maximum item or (item-based computation).
+  max : function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+    var result;
     _.each(obj, function(value, index) {
-      if (!iterator.call(context, value, index)) results.push(value);
+      var computed = iterator ? iterator.call(context, value, index) : value;
+      if (result == null || computed >= result.computed) result = {value : value, computed : computed};
     });
-    return results;
+    return result.value;
+  },
+  
+  // Return the minimum element (or element-based computation).
+  min : function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+    var result;
+    _.each(obj, function(value, index) {
+      var computed = iterator ? iterator.call(context, value, index) : value;
+      if (result == null || computed < result.computed) result = {value : value, computed : computed};
+    });
+    return result.value;
   },
   
   // Sort the object's values by a criteria produced by an iterator.
@@ -189,7 +188,7 @@ window._ = {
   
   // Return the number of elements in an object.
   size : function(obj) {
-    _.toArray(obj).length;
+    return _.toArray(obj).length;
   },
   
   //------------- The following methods only apply to arrays. -----------------
@@ -218,10 +217,10 @@ window._ = {
     });
   },
   
-  // Return a version of the array that does not contain the specified value.
+  // Return a version of the array that does not contain the specified value(s).
   without : function(array) {
     var values = array.slice.call(arguments, 0);
-    return _.select(function(value){ return !_.include(values, value); });
+    return _.select(array, function(value){ return !_.include(values, value); });
   },
   
   // Produce a duplicate-free version of the array. If the array has already
@@ -240,14 +239,38 @@ window._ = {
     });
   },
   
-  // If the browser doesn't supply us with indexOf, we might need this function.
-  // Return the position of the first occurence of an item in an array,
-  // or -1 if the item is not included in the array.
-  // indexOf : function(array, item) {
-  //   var length = array.length;
-  //   for (i=0; i<length; i++) if (array[i] === item) return i;
-  //   return -1;
-  // }
+  // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE), 
+  // we need this function. Return the position of the first occurence of an 
+  // item in an array, or -1 if the item is not included in the array.
+  indexOf : function(array, item) {
+    if (array.indexOf) return array.indexOf(item);
+    var length = array.length;
+    for (i=0; i<length; i++) if (array[i] === item) return i;
+    return -1;
+  },
+  
+  /* -------------- The following methods apply to functions -----------------*/
+  
+  // Create a function bound to a given object (assigning 'this', and arguments,
+  // optionally).
+  bind : function(func, context) {
+    if (!context) return func;
+    var args = _.toArray(arguments).slice(2);
+    return function() {
+      var a = args.concat(_.toArray(arguments));
+      return func.apply(context, a);
+    };
+  },
+  
+  // Bind all of an object's methods to that object. Useful for ensuring that 
+  // all callbacks defined on an object belong to it.
+  bindAll : function() {
+    var args = _.toArray(arguments);
+    var context = args.pop();
+    _.each(args, function(methodName) {
+      context[methodName] = _.bind(context[methodName], context);
+    });
+  },
   
   /* ---------------- The following methods apply to objects ---------------- */
   
@@ -272,6 +295,30 @@ window._ = {
     return _.extend({}, obj);
   },
   
+  // Perform a deep comparison to check if two objects are equal.
+  isEqual : function(a, b) {
+    // Check object identity.
+    if (a === b) return true;
+    // Different types?
+    var atype = typeof(a), btype = typeof(b);
+    if (atype != btype) return false;
+    // Basic equality test (watch out for coercions).
+    if (a == b) return true;
+    // One of them implements an isEqual()?
+    if (a.isEqual) return a.isEqual(b);
+    // Nothing else worked, deep compare the contents.
+    return atype === 'object' && _._isEqualContents(a, b);
+  },
+  
+  // Objects have equal contents if they have the same keys, and all the values
+  // are equal (as defined by _.isEqual).
+  _isEqualContents : function(a, b) {
+    var aKeys = _.keys(a), bKeys = _.keys(b);
+    if (aKeys.length != bKeys.length) return false;
+    for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
+    return true; 
+  },
+  
   // Is a given value a DOM element?
   isElement : function(obj) {
     return !!(obj && obj.nodeType == 1);
@@ -297,26 +344,7 @@ window._ = {
     return obj == null ? '' : String(obj);
   },
   
-  // Create a function bound to a given object (assigning 'this', and arguments,
-  // optionally).
-  bind : function(func, context) {
-    if (!context) return func;
-    var args = _.toArray(arguments).slice(2);
-    return function() {
-      var a = args.concat(_.toArray(arguments));
-      return func.apply(context, a);
-    };
-  },
-  
-  // Bind all of an object's methods to that object. Useful for ensuring that 
-  // all callbacks defined on an object belong to it.
-  bindAll : function() {
-    var args = _.toArray(arguments);
-    var context = args.pop();
-    _.each(args, function(methodName) {
-      context[methodName] = _.bind(context[methodName], context);
-    });
-  },
+  /* -------------- The following methods are utility methods --------------- */
   
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
@@ -325,30 +353,6 @@ window._ = {
     return prefix ? prefix + id : id;
   },
   
-  // Perform a deep comparison to check if two objects are equal.
-  isEqual : function(a, b) {
-    // Check object identity.
-    if (a === b) return true;
-    // Different types?
-    var at = typeof(a), bt = typeof(b);
-    if (at != bt) return false;
-    // Basic equality test (watch out for coercions).
-    if (a == b) return true;
-    // One of them implements an isEqual()?
-    if (a.isEqual) return a.isEqual(b);
-    // Nothing else worked, deep compare the contents.
-    return at === 'object' && _.isEqualContents(a, b);
-  },
-  
-  // Objects have equal contents if they have the same keys, and all the values
-  // are equal (as defined by _.isEqual).
-  _isEqualContents : function(a, b) {
-    var aKeys = _.keys(a), bKeys = _.keys(b);
-    if (aKeys.length != bKeys.length) return false;
-    for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
-    return true; 
-  },
-  
   // Javascript templating a-la ERB, pilfered from John Resig's 
   // "Secrets of the Javascript Ninja", page 83.
   template : function(str, data) {

From cf61edffa8c7b62ceb44bfc5f290775007f9ea4d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 08:43:10 -0400
Subject: [PATCH 004/533] merged some tests

---
 test/arrays.js      |  1 +
 test/collections.js | 22 +++++++++-------------
 test/objects.js     |  2 ++
 3 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 90a1e2e25..97ff295a9 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -27,6 +27,7 @@ $(document).ready(function() {
   test("arrays: uniq", function() {
     var list = [1, 2, 1, 3, 1, 4];
     equals(_.uniq(list).join(', '), '1, 2, 3, 4', 'can find the unique values of an unsorted array');
+    
     var list = [1, 1, 1, 2, 2, 3];
     equals(_.uniq(list, true).join(', '), '1, 2, 3', 'can find the unique values of a sorted array faster');
   });
diff --git a/test/collections.js b/test/collections.js
index 1cb3f9e5f..4aebedba4 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -3,24 +3,16 @@ $(document).ready(function() {
   module("Collection functions (each, any, select, and so on...)");
     
   test("collections: each", function() {
-    _.each([1, 2, 3], function(num, i){
+    _.each([1, 2, 3], function(num, i) {
       equals(num, i + 1, 'each iterators provide value and iteration count');
     });
-  });
-  
-  test('collections: each and throwing "__break__"', function() {
+    
     var answer = null;
-    _.each([1, 2, 3], function(num){
-      if ((answer = num) == 2) throw '__break__';
-    });
+    _.each([1, 2, 3], function(num){ if ((answer = num) == 2) throw '__break__'; });
     equals(answer, 2, 'the loop broke in the middle');
-  });
-  
-  test('collections: each can take a context object', function() {
+    
     var answers = [];
-    _.each([1, 2, 3], function(num) {
-      answers.push(num * this.multiplier);
-    }, {multiplier : 5});
+    _.each([1, 2, 3], function(num) { answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
   });
   
@@ -43,6 +35,7 @@ $(document).ready(function() {
   test('collections: map', function() {
     var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
+    
     var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
     equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
   });
@@ -87,12 +80,14 @@ $(document).ready(function() {
   
   test('collections: max', function() {
     equals(3, _.max([1, 2, 3]), 'can perform a regular Math.max');
+    
     var neg = _.max([1, 2, 3], function(num){ return -num; });
     equals(neg, 1, 'can perform a computation-based max');
   });
   
   test('collections: min', function() {
     equals(1, _.min([1, 2, 3]), 'can perform a regular Math.min');
+    
     var neg = _.min([1, 2, 3], function(num){ return -num; });
     equals(neg, 3, 'can perform a computation-based min');
   });
@@ -112,6 +107,7 @@ $(document).ready(function() {
   test('collections: toArray', function() {
     ok(!_.isArray(arguments), 'arguments object is not an array');
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
+    
     var numbers = _.toArray({one : 1, two : 2, three : 3});
     equals(_.pluck(numbers, '0').join(', '), 'one, two, three', 'object flattened into array');
   });
diff --git a/test/objects.js b/test/objects.js
index 347230b59..624d67bfe 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -20,8 +20,10 @@ $(document).ready(function() {
     var moe = {name : 'moe', lucky : [13, 27, 34]};
     var clone = _.clone(moe);
     equals(clone.name, 'moe', 'the clone as the attributes of the original');
+    
     clone.name = 'curly';
     ok(clone.name == 'curly' && moe.name == 'moe', 'clones can change shallow attributes without affecting the original');
+    
     clone.lucky.push(101);
     equals(_.last(moe.lucky), 101, 'changes to deep attributes are shared with the original');
   });

From d229e822e73e797b820bc7a5df05c65154fd903a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 09:15:14 -0400
Subject: [PATCH 005/533] added an _.zip()

---
 test/arrays.js      |  6 ++++
 test/collections.js | 32 +++++++++++-----------
 test/functions.js   |  7 +++++
 underscore.js       | 67 ++++++++++++++++++++++++++-------------------
 4 files changed, 68 insertions(+), 44 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 97ff295a9..7b4e45692 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -37,6 +37,12 @@ $(document).ready(function() {
     equals(_.intersect(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
   });
   
+  test('arrays: zip', function() {
+    var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true];
+    var stooges = _.zip(names, ages, leaders);
+    equals(_.toString(stooges), 'moe,30,true,larry,40,,curly,50,', 'zipped together arrays of different lengths');
+  });
+  
   test("arrays: indexOf", function() {
     var numbers = [1, 2, 3];
     numbers.indexOf = null;
diff --git a/test/collections.js b/test/collections.js
index 4aebedba4..1ba3512b7 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -16,22 +16,6 @@ $(document).ready(function() {
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
   });
   
-  test('collections: all', function() {
-    ok(_.all([]), 'the empty set');
-    ok(_.all([true, true, true]), 'all true values');
-    ok(!_.all([true, false, true]), 'one false value');
-    ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
-    ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
-  });
-  
-  test('collections: any', function() {
-    ok(!_.any([]), 'the empty set');
-    ok(!_.any([false, false, false]), 'all false values');
-    ok(_.any([false, false, true]), 'one true value');
-    ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
-    ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
-  });
-  
   test('collections: map', function() {
     var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
@@ -60,6 +44,22 @@ $(document).ready(function() {
     equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
   });
   
+  test('collections: all', function() {
+    ok(_.all([]), 'the empty set');
+    ok(_.all([true, true, true]), 'all true values');
+    ok(!_.all([true, false, true]), 'one false value');
+    ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
+    ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
+  });
+  
+  test('collections: any', function() {
+    ok(!_.any([]), 'the empty set');
+    ok(!_.any([false, false, false]), 'all false values');
+    ok(_.any([false, false, true]), 'one true value');
+    ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
+    ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
+  });
+  
   test('collections: include', function() {
     ok(_.include([1,2,3], 2), 'two is in the array');
     ok(!_.include([1,3,9], 2), 'two is not in the array');
diff --git a/test/functions.js b/test/functions.js
index 0f9362def..47de34699 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -7,6 +7,13 @@ $(document).ready(function() {
     var func = function() { return "name: " + this.name; };
     var bound = _.bind(func, context);
     equals(bound(), 'name: moe', 'can bind a function to a context');
+    
+    var func = function(salutation, name) { return salutation + ': ' + name; };
+    func = _.bind(func, this, 'hello');
+    equals(func('moe'), 'hello: moe', 'the function was partially applied in advance');
+    
+    func = _.bind(func, this, 'curly');
+    equals(func(), 'hello: curly', 'the function was completely applied in advance');
   });
   
   test("functions: bindAll", function() {
diff --git a/underscore.js b/underscore.js
index c32e87a2d..8f4ba6ee4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -28,35 +28,10 @@ window._ = {
     return obj;
   },
   
-  // Determine whether all of the elements match a truth test. Delegate to
-  // Javascript 1.6's every(), if it is present.
-  all : function(obj, iterator, context) {
-    iterator = iterator || function(v){ return v; };
-    if (obj.every) return obj.every(iterator, context);
-    var result = true;
-    _.each(obj, function(value, index) {
-      result = result && !!iterator.call(context, value, index);
-      if (!result) throw '__break__';
-    });
-    return result;
-  },
-  
-  // Determine if at least one element in the object matches a truth test. Use
-  // Javascript 1.6's some(), if it exists.
-  any : function(obj, iterator, context) {
-    iterator = iterator || function(v) { return v; };
-    if (obj.some) return obj.some(iterator, context);
-    var result = false;
-    _.each(obj, function(value, index) {
-      if (result = !!iterator.call(context, value, index)) throw '__break__';
-    });
-    return result;
-  },
-  
   // Return the results of applying the iterator to each element. Use Javascript
   // 1.6's version of map, if possible.
   map : function(obj, iterator, context) {
-    if (obj.map) return obj.map(iterator, context);
+    if (obj && obj.map) return obj.map(iterator, context);
     var results = [];
     _.each(obj, function(value, index) {
       results.push(iterator.call(context, value, index));
@@ -64,7 +39,8 @@ window._ = {
     return results;
   },
   
-  // Aka reduce. Inject builds up a single result from a list of values.
+  // Inject builds up a single result from a list of values. Also known as
+  // reduce, and foldl.
   inject : function(obj, memo, iterator, context) {
     _.each(obj, function(value, index) {
       memo = iterator.call(context, memo, value, index);
@@ -104,6 +80,31 @@ window._ = {
     return results;
   },
   
+  // Determine whether all of the elements match a truth test. Delegate to
+  // Javascript 1.6's every(), if it is present.
+  all : function(obj, iterator, context) {
+    iterator = iterator || function(v){ return v; };
+    if (obj.every) return obj.every(iterator, context);
+    var result = true;
+    _.each(obj, function(value, index) {
+      result = result && !!iterator.call(context, value, index);
+      if (!result) throw '__break__';
+    });
+    return result;
+  },
+  
+  // Determine if at least one element in the object matches a truth test. Use
+  // Javascript 1.6's some(), if it exists.
+  any : function(obj, iterator, context) {
+    iterator = iterator || function(v) { return v; };
+    if (obj.some) return obj.some(iterator, context);
+    var result = false;
+    _.each(obj, function(value, index) {
+      if (result = !!iterator.call(context, value, index)) throw '__break__';
+    });
+    return result;
+  },
+  
   // Determine if a given value is included in the array or object, 
   // based on '=='.
   include : function(obj, target) {
@@ -239,6 +240,16 @@ window._ = {
     });
   },
   
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  zip : function() {
+    var args = _.toArray(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i=0; i<length; i++) results[i] = _.pluck(args, String(i));
+    return results;
+  },
+  
   // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE), 
   // we need this function. Return the position of the first occurence of an 
   // item in an array, or -1 if the item is not included in the array.
@@ -252,7 +263,7 @@ window._ = {
   /* -------------- The following methods apply to functions -----------------*/
   
   // Create a function bound to a given object (assigning 'this', and arguments,
-  // optionally).
+  // optionally). Binding with arguments is also known as 'curry'.
   bind : function(func, context) {
     if (!context) return func;
     var args = _.toArray(arguments).slice(2);

From 42362a274274e18bb03c840fc05bfdf6910c96f1 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 09:55:56 -0400
Subject: [PATCH 006/533] added a bunch of speed tests using jslitmus

---
 test/speed.js           |  34 ++
 test/test.html          |  17 +-
 test/vendor/jslitmus.js | 670 ++++++++++++++++++++++++++++++++++++++++
 test/vendor/qunit.css   |   4 +-
 4 files changed, 717 insertions(+), 8 deletions(-)
 create mode 100644 test/speed.js
 create mode 100644 test/vendor/jslitmus.js

diff --git a/test/speed.js b/test/speed.js
new file mode 100644
index 000000000..63cde52bb
--- /dev/null
+++ b/test/speed.js
@@ -0,0 +1,34 @@
+(function() {
+  
+  var numbers = [];
+  for (var i=0; i<1000; i++) numbers.push(i);
+  var objects = _.map(numbers, function(n){ return {num : n}; });
+  var randomized = _.sortBy(numbers, function(){ return Math.random(); });
+  
+  JSLitmus.test('_.each()', function() {
+    var timesTwo = [];
+    _.each(numbers, function(num){ timesTwo.push(num * 2); });
+    return timesTwo;
+  });
+  
+  JSLitmus.test('_.map()', function() {
+    return _.map(objects, function(obj){ return obj.num; });
+  });
+  
+  JSLitmus.test('_.pluck()', function() {
+    return _.pluck(objects, 'num');
+  });
+  
+  JSLitmus.test('_.uniq()', function() {
+    return _.uniq(randomized);
+  });
+  
+  JSLitmus.test('_.uniq() (sorted)', function() {
+    return _.uniq(numbers, true);
+  });
+  
+  JSLitmus.test('_.isEqual()', function() {
+    return _.isEqual(numbers, randomized);
+  });
+
+})();
\ No newline at end of file
diff --git a/test/test.html b/test/test.html
index 9c8220344..67415345d 100644
--- a/test/test.html
+++ b/test/test.html
@@ -1,22 +1,27 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
-                    "http://www.w3.org/TR/html4/loose.dtd">
+<!DOCTYPE HTML>
 <html>
 <head>
+  <title>Underscore Test Suite</title>
   <link rel="stylesheet" href="vendor/qunit.css" type="text/css" media="screen" />
   <script type="text/javascript" src="vendor/jquery.js"></script>
   <script type="text/javascript" src="vendor/qunit.js"></script>
+  <script type="text/javascript" src="vendor/jslitmus.js"></script>
   <script type="text/javascript" src="../underscore.js"></script>
   <script type="text/javascript" src="collections.js"></script>
   <script type="text/javascript" src="arrays.js"></script>
   <script type="text/javascript" src="functions.js"></script>
   <script type="text/javascript" src="objects.js"></script>
   <script type="text/javascript" src="utility.js"></script>
-  
+  <script type="text/javascript" src="speed.js"></script>  
 </head>
 <body>
   <h1 id="qunit-header">Underscore Test Suite</h1>
- <h2 id="qunit-banner"></h2>
- <h2 id="qunit-userAgent"></h2>
- <ol id="qunit-tests"></ol>
+  <h2 id="qunit-banner"></h2>
+  <h2 id="qunit-userAgent"></h2>
+  <ol id="qunit-tests"></ol>
+  <br />
+  <h1 class="qunit-header">JSLitmus Speed Suite</h1>
+  <h2 class="qunit-userAgent">Each iteration runs on an array of 1000 elements.</h2>
+  <br />
 </body>
 </html>
\ No newline at end of file
diff --git a/test/vendor/jslitmus.js b/test/vendor/jslitmus.js
new file mode 100644
index 000000000..a0e9f806f
--- /dev/null
+++ b/test/vendor/jslitmus.js
@@ -0,0 +1,670 @@
+// JSLitmus.js
+//
+// History:
+//   2008-10-27: Initial release
+//   2008-11-09: Account for iteration loop overhead
+//   2008-11-13: Added OS detection
+//   2009-02-25: Create tinyURL automatically, shift-click runs tests in reverse
+//
+// Copyright (c) 2008-2009, Robert Kieffer
+// All Rights Reserved
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the
+// Software), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+(function() {
+  // Private methods and state
+
+  // Get platform info but don't go crazy trying to recognize everything
+  // that's out there.  This is just for the major platforms and OSes.
+  var platform = 'unknown platform', ua = navigator.userAgent;
+
+  // Detect OS
+  var oses = ['Windows','iPhone OS','(Intel |PPC )?Mac OS X','Linux'].join('|');
+  var pOS = new RegExp('((' + oses + ') [^ \);]*)').test(ua) ? RegExp.$1 : null;
+  if (!pOS) pOS = new RegExp('((' + oses + ')[^ \);]*)').test(ua) ? RegExp.$1 : null;
+
+  // Detect browser
+  var pName = /(Chrome|MSIE|Safari|Opera|Firefox)/.test(ua) ? RegExp.$1 : null;
+
+  // Detect version
+  var vre = new RegExp('(Version|' + pName + ')[ \/]([^ ;]*)');
+  var pVersion = (pName && vre.test(ua)) ? RegExp.$2 : null;
+  var platform = (pOS && pName && pVersion) ? pName + ' '  + pVersion + ' on ' + pOS : 'unknown platform';
+
+  /**
+  * A smattering of methods that are needed to implement the JSLitmus testbed.
+  */
+  var jsl = {
+    /**
+    * Enhanced version of escape()
+    */
+    escape: function(s) {
+      s = s.replace(/,/g, '\\,');
+      s = escape(s);
+      s = s.replace(/\+/g, '%2b');
+      s = s.replace(/ /g, '+');
+      return s;
+    },
+
+    /**
+    * Get an element by ID.
+    */
+    $: function(id) {
+      return document.getElementById(id);
+    },
+
+    /**
+    * Null function
+    */
+    F: function() {},
+
+    /**
+    * Set the status shown in the UI
+    */
+    status: function(msg) {
+      var el = jsl.$('jsl_status');
+      if (el) el.innerHTML = msg || '';
+    },
+
+    /**
+    * Convert a number to an abbreviated string like, "15K" or "10M"
+    */
+    toLabel: function(n) {
+      if (n == Infinity) {
+        return 'Infinity';
+      } else if (n > 1e9) {
+        n = Math.round(n/1e8);
+        return n/10 + 'B';
+      } else if (n > 1e6) {
+        n = Math.round(n/1e5);
+        return n/10 + 'M';
+      } else if (n > 1e3) {
+        n = Math.round(n/1e2);
+        return n/10 + 'K';
+      }
+      return n;
+    },
+
+    /**
+    * Copy properties from src to dst
+    */
+    extend: function(dst, src) {
+      for (var k in src) dst[k] = src[k]; return dst;
+    },
+
+    /**
+    * Like Array.join(), but for the key-value pairs in an object
+    */
+    join: function(o, delimit1, delimit2) {
+      if (o.join) return o.join(delimit1);  // If it's an array
+      var pairs = [];
+      for (var k in o) pairs.push(k + delimit1 + o[k]);
+      return pairs.join(delimit2);
+    },
+
+    /**
+    * Array#indexOf isn't supported in IE, so we use this as a cross-browser solution
+    */
+    indexOf: function(arr, o) {
+      if (arr.indexOf) return arr.indexOf(o);
+      for (var i = 0; i < this.length; i++) if (arr[i] === o) return i;
+      return -1;
+    }
+  };
+
+  /**
+  * Test manages a single test (created with
+  * JSLitmus.test())
+  * 
+  * @private
+  */
+  var Test = function (name, f) {
+    if (!f) throw new Error('Undefined test function');
+    if (!(/function[^\(]*\(([^,\)]*)/).test(f.toString())) {
+      throw new Error('"' + name + '" test: Test is not a valid Function object');
+    }
+    this.loopArg = RegExp.$1;
+    this.name = name;
+    this.f = f;
+  };
+  
+  jsl.extend(Test, /** @lends Test */ {
+    /** Calibration tests for establishing iteration loop overhead */
+    CALIBRATIONS: [
+      new Test('calibrating loop', function(count) {while (count--);}),
+      new Test('calibrating function', jsl.F)
+    ],
+
+    /**
+    * Run calibration tests.  Returns true if calibrations are not yet
+    * complete (in which case calling code should run the tests yet again).
+    * onCalibrated - Callback to invoke when calibrations have finished
+    */
+    calibrate: function(onCalibrated) {
+      for (var i = 0; i < Test.CALIBRATIONS.length; i++) { 
+        var cal = Test.CALIBRATIONS[i];
+        if (cal.running) return true;
+        if (!cal.count) {
+          cal.isCalibration = true;
+          cal.onStop = onCalibrated;
+          //cal.MIN_TIME = .1; // Do calibrations quickly
+          cal.run(2e4);
+          return true;
+        }
+      }
+      return false;
+    }
+  });
+
+  jsl.extend(Test.prototype, {/** @lends Test.prototype */
+    /** Initial number of iterations */
+    INIT_COUNT: 10,
+    /** Max iterations allowed (i.e. used to detect bad looping functions) */
+    MAX_COUNT: 1e9,
+    /** Minimum time a test should take to get valid results (secs) */
+    MIN_TIME: .5,
+
+    /** Callback invoked when test state changes */
+    onChange: jsl.F,
+
+    /** Callback invoked when test is finished */
+    onStop: jsl.F,
+
+    /**
+     * Reset test state
+     */
+    reset: function() {
+      delete this.count;
+      delete this.time;
+      delete this.running;
+      delete this.error;
+    },
+
+    /**
+    * Run the test (in a timeout). We use a timeout to make sure the browser
+    * has a chance to finish rendering any UI changes we've made, like
+    * updating the status message.
+    */
+    run: function(count) {
+      count = count || this.INIT_COUNT;
+      jsl.status(this.name + ' x ' + count);
+      this.running = true;
+      var me = this;
+      setTimeout(function() {me._run(count);}, 200);
+    },
+
+    /**
+     * The nuts and bolts code that actually runs a test
+     */
+    _run: function(count) {
+      var me = this;
+
+      // Make sure calibration tests have run
+      if (!me.isCalibration && Test.calibrate(function() {me.run(count);})) return;
+      this.error = null;
+
+      try {
+        var start, f = this.f, now, i = count;
+
+        // Start the timer
+        start = new Date();
+
+        // Now for the money shot.  If this is a looping function ...
+        if (this.loopArg) {
+          // ... let it do the iteration itself
+          f(count);
+        } else {
+          // ... otherwise do the iteration for it
+          while (i--) f();
+        }
+
+        // Get time test took (in secs)
+        this.time = Math.max(1,new Date() - start)/1000;
+
+        // Store iteration count and per-operation time taken
+        this.count = count;
+        this.period = this.time/count;
+
+        // Do we need to do another run?
+        this.running = this.time <= this.MIN_TIME;
+
+        // ... if so, compute how many times we should iterate
+        if (this.running) {
+          // Bump the count to the nearest power of 2
+          var x = this.MIN_TIME/this.time;
+          var pow = Math.pow(2, Math.max(1, Math.ceil(Math.log(x)/Math.log(2))));
+          count *= pow;
+          if (count > this.MAX_COUNT) {
+            throw new Error('Max count exceeded.  If this test uses a looping function, make sure the iteration loop is working properly.');
+          }
+        }
+      } catch (e) {
+        // Exceptions are caught and displayed in the test UI
+        this.reset();
+        this.error = e;
+      }
+
+      // Figure out what to do next
+      if (this.running) {
+        me.run(count);
+      } else {
+        jsl.status('');
+        me.onStop(me);
+      }
+
+      // Finish up
+      this.onChange(this);
+    },
+
+    /**
+    * Get the number of operations per second for this test.
+    * 
+    * @param normalize if true, iteration loop overhead taken into account
+    */
+    getHz: function(/**Boolean*/ normalize) {
+      var p = this.period;
+
+      // Adjust period based on the calibration test time
+      if (normalize && !this.isCalibration) {
+        var cal = Test.CALIBRATIONS[this.loopArg ? 0 : 1];
+
+        // If the period is within 20% of the calibration time, then zero the
+        // it out
+        p = p < cal.period*1.2 ? 0 : p - cal.period;
+      }
+
+      return Math.round(1/p);
+    },
+
+    /**
+    * Get a friendly string describing the test
+    */
+    toString: function() {
+      return this.name + ' - '  + this.time/this.count + ' secs';
+    }
+  });
+
+  // CSS we need for the UI
+  var STYLESHEET = '<style> \
+    #jslitmus {font-family:sans-serif; font-size: 12px;} \
+    #jslitmus a {text-decoration: none;} \
+    #jslitmus a:hover {text-decoration: underline;} \
+    #jsl_status { \
+      margin-top: 10px; \
+      font-size: 10px; \
+      color: #888; \
+    } \
+    A IMG  {border:none} \
+    #test_results { \
+      margin-top: 10px; \
+      font-size: 12px; \
+      font-family: sans-serif; \
+      border-collapse: collapse; \
+      border-spacing: 0px; \
+    } \
+    #test_results th, #test_results td { \
+      border: solid 1px #ccc; \
+      vertical-align: top; \
+      padding: 3px; \
+    } \
+    #test_results th { \
+      vertical-align: bottom; \
+      background-color: #ccc; \
+      padding: 1px; \
+      font-size: 10px; \
+    } \
+    #test_results #test_platform { \
+      color: #444; \
+      text-align:center; \
+    } \
+    #test_results .test_row { \
+      color: #006; \
+      cursor: pointer; \
+    } \
+    #test_results .test_nonlooping { \
+      border-left-style: dotted; \
+      border-left-width: 2px; \
+    } \
+    #test_results .test_looping { \
+      border-left-style: solid; \
+      border-left-width: 2px; \
+    } \
+    #test_results .test_name {white-space: nowrap;} \
+    #test_results .test_pending { \
+    } \
+    #test_results .test_running { \
+      font-style: italic; \
+    } \
+    #test_results .test_done {} \
+    #test_results .test_done { \
+      text-align: right; \
+      font-family: monospace; \
+    } \
+    #test_results .test_error {color: #600;} \
+    #test_results .test_error .error_head {font-weight:bold;} \
+    #test_results .test_error .error_body {font-size:85%;} \
+    #test_results .test_row:hover td { \
+      background-color: #ffc; \
+      text-decoration: underline; \
+    } \
+    #chart { \
+      margin: 10px 0px; \
+      width: 250px; \
+    } \
+    #chart img { \
+      border: solid 1px #ccc; \
+      margin-bottom: 5px; \
+    } \
+    #chart #tiny_url { \
+      height: 40px; \
+      width: 250px; \
+    } \
+    #jslitmus_credit { \
+      font-size: 10px; \
+      color: #888; \
+      margin-top: 8px; \
+    } \
+    </style>';
+
+  // HTML markup for the UI
+  var MARKUP = '<div id="jslitmus"> \
+      <button onclick="JSLitmus.runAll(event)">Run Tests</button> \
+      <button id="stop_button" disabled="disabled" onclick="JSLitmus.stop()">Stop Tests</button> \
+      <br \> \
+      <br \> \
+      <input type="checkbox" style="vertical-align: middle" id="test_normalize" checked="checked" onchange="JSLitmus.renderAll()""> Normalize results \
+      <table id="test_results"> \
+        <colgroup> \
+          <col /> \
+          <col width="100" /> \
+        </colgroup> \
+        <tr><th id="test_platform" colspan="2">' + platform + '</th></tr> \
+        <tr><th>Test</th><th>Ops/sec</th></tr> \
+        <tr id="test_row_template" class="test_row" style="display:none"> \
+          <td class="test_name"></td> \
+          <td class="test_result">Ready</td> \
+        </tr> \
+      </table> \
+      <div id="jsl_status"></div> \
+      <div id="chart" style="display:none"> \
+      <a id="chart_link" target="_blank"><img id="chart_image"></a> \
+      TinyURL (for chart): \
+      <iframe id="tiny_url" frameBorder="0" scrolling="no" src=""></iframe> \
+      </div> \
+      <a id="jslitmus_credit" title="JSLitmus home page" href="http://code.google.com/p/jslitmus" target="_blank">Powered by JSLitmus</a> \
+    </div>';
+
+  /**
+   * The public API for creating and running tests
+   */
+  window.JSLitmus = {
+    /** The list of all tests that have been registered with JSLitmus.test */
+    _tests: [],
+    /** The queue of tests that need to be run */
+    _queue: [],
+
+    /**
+    * The parsed query parameters the current page URL.  This is provided as a
+    * convenience for test functions - it's not used by JSLitmus proper
+    */
+    params: {},
+
+    /**
+     * Initialize
+     */
+    _init: function() {
+      // Parse query params into JSLitmus.params[] hash
+      var match = (location + '').match(/([^?#]*)(#.*)?$/);
+      if (match) {
+        var pairs = match[1].split('&');
+        for (var i = 0; i < pairs.length; i++) {
+          var pair = pairs[i].split('=');
+          if (pair.length > 1) {
+            var key = pair.shift();
+            var value = pair.length > 1 ? pair.join('=') : pair[0];
+            this.params[key] = value;
+          }
+        }
+      }
+
+      // Write out the stylesheet.  We have to do this here because IE
+      // doesn't honor sheets written after the document has loaded.
+      document.write(STYLESHEET);
+
+      // Setup the rest of the UI once the document is loaded
+      if (window.addEventListener) {
+        window.addEventListener('load', this._setup, false);
+      } else if (document.addEventListener) {
+        document.addEventListener('load', this._setup, false);
+      } else if (window.attachEvent) {
+        window.attachEvent('onload', this._setup);
+      }
+
+      return this;
+    },
+
+    /**
+     * Set up the UI
+     */
+    _setup: function() {
+      var el = jsl.$('jslitmus_container');
+      if (!el) document.body.appendChild(el = document.createElement('div'));
+
+      el.innerHTML = MARKUP;
+
+      // Render the UI for all our tests
+      for (var i=0; i < JSLitmus._tests.length; i++)
+        JSLitmus.renderTest(JSLitmus._tests[i]);
+    },
+
+    /**
+     * (Re)render all the test results
+     */
+    renderAll: function() {
+      for (var i = 0; i < JSLitmus._tests.length; i++)
+        JSLitmus.renderTest(JSLitmus._tests[i]);
+      JSLitmus.renderChart();
+    },
+
+    /**
+     * (Re)render the chart graphics
+     */
+    renderChart: function() {
+      var url = JSLitmus.chartUrl();
+      jsl.$('chart_link').href = url;
+      jsl.$('chart_image').src = url;
+      jsl.$('chart').style.display = '';
+
+      // Update the tiny URL
+      jsl.$('tiny_url').src = 'http://tinyurl.com/api-create.php?url='+escape(url);
+    },
+
+    /**
+     * (Re)render the results for a specific test
+     */
+    renderTest: function(test) {
+      // Make a new row if needed
+      if (!test._row) {
+        var trow = jsl.$('test_row_template');
+        if (!trow) return;
+
+        test._row = trow.cloneNode(true);
+        test._row.style.display = '';
+        test._row.id = '';
+        test._row.onclick = function() {JSLitmus._queueTest(test);};
+        test._row.title = 'Run ' + test.name + ' test';
+        trow.parentNode.appendChild(test._row);
+        test._row.cells[0].innerHTML = test.name;
+      }
+
+      var cell = test._row.cells[1];
+      var cns = [test.loopArg ? 'test_looping' : 'test_nonlooping'];
+
+      if (test.error) {
+        cns.push('test_error');
+        cell.innerHTML = 
+        '<div class="error_head">' + test.error + '</div>' +
+        '<ul class="error_body"><li>' +
+          jsl.join(test.error, ': ', '</li><li>') +
+          '</li></ul>';
+      } else {
+        if (test.running) {
+          cns.push('test_running');
+          cell.innerHTML = 'running';
+        } else if (jsl.indexOf(JSLitmus._queue, test) >= 0) {
+          cns.push('test_pending');
+          cell.innerHTML = 'pending';
+        } else if (test.count) {
+          cns.push('test_done');
+          var hz = test.getHz(jsl.$('test_normalize').checked);
+          cell.innerHTML = hz != Infinity ? hz : '&infin;';
+        } else {
+          cell.innerHTML = 'ready';
+        }
+      }
+      cell.className = cns.join(' ');
+    },
+
+    /**
+     * Create a new test
+     */
+    test: function(name, f) {
+      // Create the Test object
+      var test = new Test(name, f);
+      JSLitmus._tests.push(test);
+
+      // Re-render if the test state changes
+      test.onChange = JSLitmus.renderTest;
+
+      // Run the next test if this one finished
+      test.onStop = function(test) {
+        if (JSLitmus.onTestFinish) JSLitmus.onTestFinish(test);
+        JSLitmus.currentTest = null;
+        JSLitmus._nextTest();
+      };
+
+      // Render the new test
+      this.renderTest(test);
+    },
+
+    /**
+     * Add all tests to the run queue
+     */
+    runAll: function(e) {
+      e = e || window.event;
+      var reverse = e && e.shiftKey, len = JSLitmus._tests.length;
+      for (var i = 0; i < len; i++) {
+        JSLitmus._queueTest(JSLitmus._tests[!reverse ? i : (len - i - 1)]);
+      }
+    },
+
+    /**
+     * Remove all tests from the run queue.  The current test has to finish on
+     * it's own though
+     */
+    stop: function() {
+      while (JSLitmus._queue.length) {
+        var test = JSLitmus._queue.shift();
+        JSLitmus.renderTest(test);
+      }
+    },
+
+    /**
+     * Run the next test in the run queue
+     */
+    _nextTest: function() {
+      if (!JSLitmus.currentTest) {
+        var test = JSLitmus._queue.shift();
+        if (test) {
+          jsl.$('stop_button').disabled = false;
+          JSLitmus.currentTest = test;
+          test.run();
+          JSLitmus.renderTest(test);
+          if (JSLitmus.onTestStart) JSLitmus.onTestStart(test);
+        } else {
+          jsl.$('stop_button').disabled = true;
+          JSLitmus.renderChart();
+        }
+      }
+    },
+
+    /**
+     * Add a test to the run queue
+     */
+    _queueTest: function(test) {
+      if (jsl.indexOf(JSLitmus._queue, test) >= 0) return;
+      JSLitmus._queue.push(test);
+      JSLitmus.renderTest(test);
+      JSLitmus._nextTest();
+    },
+
+    /**
+     * Generate a Google Chart URL that shows the data for all tests
+     */
+    chartUrl: function() {
+      var n = JSLitmus._tests.length, markers = [], data = [];
+      var d, min = 0, max = -1e10;
+      var normalize = jsl.$('test_normalize').checked;
+
+      // Gather test data
+      for (var i=0; i < JSLitmus._tests.length; i++) {
+        var test = JSLitmus._tests[i];
+        if (test.count) {
+          var hz = test.getHz(normalize);
+          var v = hz != Infinity ? hz : 0;
+          data.push(v);
+          markers.push('t' + jsl.escape(test.name + '(' + jsl.toLabel(hz)+ ')') + ',000000,0,' +
+            markers.length + ',10');
+          max = Math.max(v, max);
+        }
+      }
+      if (markers.length <= 0) return null;
+
+      // Build chart title
+      var title = document.getElementsByTagName('title');
+      title = (title && title.length) ? title[0].innerHTML : null;
+      var chart_title = [];
+      if (title) chart_title.push(title);
+      chart_title.push('Ops/sec (' + platform + ')');
+
+      // Build labels
+      var labels = [jsl.toLabel(min), jsl.toLabel(max)];
+
+      var w = 250, bw = 15;
+      var bs = 5;
+      var h = markers.length*(bw + bs) + 30 + chart_title.length*20;
+
+      var params = {
+        chtt: escape(chart_title.join('|')),
+        chts: '000000,10',
+        cht: 'bhg',                     // chart type
+        chd: 't:' + data.join(','),     // data set
+        chds: min + ',' + max,          // max/min of data
+        chxt: 'x',                      // label axes
+        chxl: '0:|' + labels.join('|'), // labels
+        chsp: '0,1',
+        chm: markers.join('|'),         // test names
+        chbh: [bw, 0, bs].join(','),    // bar widths
+        // chf: 'bg,lg,0,eeeeee,0,eeeeee,.5,ffffff,1', // gradient
+        chs: w + 'x' + h
+      };
+      return 'http://chart.apis.google.com/chart?' + jsl.join(params, '=', '&');
+    } 
+  };
+
+  JSLitmus._init();
+})();
\ No newline at end of file
diff --git a/test/vendor/qunit.css b/test/vendor/qunit.css
index 660cd3c1a..c12b16d8e 100644
--- a/test/vendor/qunit.css
+++ b/test/vendor/qunit.css
@@ -1,11 +1,11 @@
-h1#qunit-header { padding: 15px; font-size: large; background-color: #06b; color: white; font-family: 'trebuchet ms', verdana, arial; margin: 0; }
+h1#qunit-header, h1.qunit-header { padding: 15px; font-size: large; background-color: #06b; color: white; font-family: 'trebuchet ms', verdana, arial; margin: 0; }
 h1#qunit-header a { color: white; }
 
 h2#qunit-banner { height: 2em; border-bottom: 1px solid white; background-color: #eee; margin: 0; font-family: 'trebuchet ms', verdana, arial; }
 h2#qunit-banner.pass { background-color: green; }
 h2#qunit-banner.fail { background-color: red; }
 
-h2#qunit-userAgent { padding: 10px; background-color: #eee; color: black; margin: 0; font-size: small; font-weight: normal; font-family: 'trebuchet ms', verdana, arial; font-size: 10pt; }
+h2#qunit-userAgent, h2.qunit-userAgent { padding: 10px; background-color: #eee; color: black; margin: 0; font-size: small; font-weight: normal; font-family: 'trebuchet ms', verdana, arial; font-size: 10pt; }
 
 div#qunit-testrunner-toolbar { background: #eee; border-top: 1px solid black; padding: 10px; font-family: 'trebuchet ms', verdana, arial; margin: 0; font-size: 10pt; }
 

From 4c41af41e665cd41396783635a905d1743ce9596 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 16:07:09 -0400
Subject: [PATCH 007/533] first batch of documentation

---
 index.html        | 308 ++++++++++++++++++++++++++++++++++++++++++++++
 test/functions.js |  19 +++
 test/test.html    |   2 +-
 underscore.js     |  23 ++++
 4 files changed, 351 insertions(+), 1 deletion(-)
 create mode 100644 index.html

diff --git a/index.html b/index.html
new file mode 100644
index 000000000..aae21514d
--- /dev/null
+++ b/index.html
@@ -0,0 +1,308 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Underscore.js</title> 
+  <style>
+    body {
+      font-size: 16px;
+      line-height: 24px;
+      background: #f0f0e5;
+      color: #252519;
+      font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif;
+    }
+    div.container {
+      width: 720px;
+      margin: 0 auto;
+      margin-top: 50px;  
+    }
+    p {
+      width: 550px;
+    }
+      #documentation p {
+        margin-bottom: 8px;
+      }
+    a, a:visited {
+      padding: 0 2px;
+      text-decoration: none;
+      background: #dadaba;
+      color: #252519;
+    }
+    a:active, a:hover {
+      color: #000;
+      background: #f0c095;
+    }
+    h1, h2, h3, h4, h5, h6 {
+      margin-top: 35px;
+    }
+    code, pre {
+      font-family: Monaco, Consolas, "Lucida Console", monospace;
+      font-size: 12px;
+      line-height: 18px;
+      color: #555529;
+    }
+      code {
+        margin-left: 20px;
+      }
+      pre {
+        font-size: 12px;
+        padding-left: 12px;
+        border-left: 6px solid #aaaa99;
+        margin: 0px 0 35px;
+      }
+  </style>
+</head>
+<body>
+  
+  <div class="container">
+    
+    <h1>Underscore.js</h1>
+    
+    <p>
+      <a href="http://github.com/documentcloud/underscore/">Underscore</a> is a 
+      utility-belt library for Javascript that provides a lot of the
+      functional programming support that you would expect in
+      <a href="http://prototypejs.org/api">Prototype.js</a> 
+      (or <a href="http://www.ruby-doc.org/core/classes/Enumerable.html">Ruby</a>), 
+      but without extending any of the built-in Javascript objects. It's the 
+      tie to go along with <a href="http://docs.jquery.com">jQuery</a>'s tux.
+    </p>
+    
+    <p>
+      Underscore provides 43-odd functions that support both the usual 
+      functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash; 
+      as well as more specialized helpers: function binding, javascript 
+      templating, deep equality testing, and so on. It delegates to the built-in 
+      functions, if present, so 
+      <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">Javascript 1.6</a> 
+      compliant browsers will use the 
+      native implementations of <b>forEach</b>, <b>map</b>, <b>filter</b>, 
+      <b>every</b> and <b>some</b>.
+    </p>
+    
+    <p>
+      Underscore includes a complete <a href="test/test.html">Test &amp; Benchmark Suite</a>
+      for your perusal.
+    </p>
+    
+    <h2>Table of Contents</h2>
+    
+    <p>
+      <b>Collections</b>
+      <br /> 
+      <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>, 
+      <a href="#inject">inject</a>, <a href="#detect">detect</a>, <a href="#select">select</a>, <a href="#reject">reject</a>, <a href="#all">all</a>, 
+      <a href="#any">any</a>, <a href="#include">include</a>, <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>, <a href="#max">max</a>, 
+      <a href="#min">min</a>, <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>, <a href="#toArray">toArray</a>, 
+      <a href="#size">size</a></span>
+    </p>
+    
+    <p>
+      <b>Arrays</b>
+      <br />
+      <span class="methods"><a href="#first">first</a>, <a href="#last">last</a>, 
+      <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>, 
+      <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>
+    </p>
+    
+    <p>
+      <b>Objects</b>
+      <br />
+      <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>, 
+      <a href="#extend">extend</a>, <a href="#clone">clone</a>, <a href="#isEqual">isEqual</a>, <a href="#isElement">isElement</a>, 
+      <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isUndefined">isUndefined</a>, <a href="#toString">toString</a>
+      </span>
+    </p>
+    
+    <p>
+      <b>Functions</b>
+      <br />
+      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>, 
+      <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>
+    </p>
+    
+    <p>
+      <b>Utility</b>
+      <br />
+      <span class="methods"><a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
+    </p>
+    
+    <div id="documentation">
+      <h2>Collections</h2>
+      
+      <p id="each">
+        <b>each</b><code>_.each(list, iterator, [context])</code>
+        <br />
+        Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
+        function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
+        passed. If <b>list</b> is a Javascript object, a pair with <b>key</b>
+        and <b>value</b> properties will be yielded. Delegates to the native 
+        <b>forEach</b> method if it exists.
+      </p>
+      <pre>
+_.each([1, 2, 3], function(num){ alert(num); });
+=> alerts each number in turn...</pre>
+      
+      <p id="map">
+        <b>map</b><code>_.map(list, iterator, [context])</code>
+        <br />
+        Produces a new array of values by mapping each value in <b>list</b> 
+        through a transformation function (<b>iterator</b>). If the native 
+        <b>map</b> method exists, it will be used instead.
+      </p>
+      <pre>
+_.map([1, 2, 3], function(num){ return num * 3 });
+=> [3, 6, 9]</pre>
+
+      <p id="inject">
+        <b>inject</b><code>_.inject(list, memo, iterator, [context])</code>
+        <br />
+        Also known as <b>reduce</b> and <b>foldl</b>, <b>inject</b> reduces a 
+        <b>list</b> of values into a single value. <b>Memo</b> is the initial state
+        of the reduction, and each successive step of it should be returned by
+        <b>iterator</b>.
+      </p>
+      <pre>
+var sum = _.inject([1, 2, 3], 0, function(memo, num){ return memo + num });
+=> 6
+</pre>
+
+      <p id="detect">
+        <b>detect</b><code>_.detect(list, iterator, [context])</code>
+        <br />
+        Looks through each value in the <b>list</b>, returning the first one that 
+        passes a truth test (<b>iterator</b>). The function returns as 
+        soon as it finds the true element, and doesn't continue to traverse 
+        the list.
+      </p>
+      <pre>
+var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+=> 2
+</pre>
+
+      <p id="select">
+        <b>select</b><code>_.select(list, iterator, [context])</code>
+        <br />
+        Looks through each value in the <b>list</b>, returning an array of all
+        the values that pass a truth test (<b>iterator</b>). Delegates to the
+        native <b>filter</b> method, if it exists.
+      </p>
+      <pre>
+var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+=> [2, 4, 6]
+</pre>
+
+      <p id="reject">
+        <b>reject</b><code>_.reject(list, iterator, [context])</code>
+        <br />
+        Returns the values in <b>list</b> without the elements that the truth
+        test (<b>iterator</b>) passes. The opposite of <b>select</b>.
+      </p>
+      <pre>
+var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+=> [1, 3, 5]
+</pre>
+
+      <p id="all">
+        <b>all</b><code>_.(list, [iterator], [context])</code>
+        <br />
+        Returns <i>true</i> if all of the values in the <b>list</b> pass the <b>iterator</b>
+        truth test. If an <b>iterator</b> is not provided, the truthy value of 
+        the element will be used instead. Delegates to the native method <b>every</b>, if
+        present.
+      </p>
+      <pre>
+_.all([true, 1, null, 'yes']);
+=> false
+</pre>
+
+      <p id="any">
+        <b>any</b><code>_.(list, iterator, [context])</code>
+        <br />
+        Returns <i>true</i> if any of the values in the <b>list</b> pass the
+        <b>iterator</b> truth test. Short-circuits and stops traversing the list
+        if a true element is found. Delegates to the native method <b>some</b>,
+        if present.
+      </p>
+      <pre>
+_.any([null, 0, 'yes', false]);
+=> true
+</pre>
+
+      <p id="">
+        <b>include</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>invoke</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>pluck</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>max</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>min</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>sortBy</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>sortedIndex</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>toArray</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>size</b><code>_.(list, iterator, [context])</code>
+        <br />
+
+      </p>
+      <pre>
+</pre>
+      
+    </div>
+    
+  </div>
+
+</body>
+</html>
diff --git a/test/functions.js b/test/functions.js
index 47de34699..039f7a746 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -29,4 +29,23 @@ $(document).ready(function() {
     equals(curly.sayHi(), 'hi: moe', 'bound function is still bound to original object');
   });
   
+  asyncTest("functions: delay", function() {
+    var delayed = false;
+    _.delay(function(){ delayed = true; }, 100);
+    _.delay(function(){ ok(!delayed, "didn't delay the function quite yet"); }, 50);
+    _.delay(function(){ ok(delayed, 'delayed the function'); start(); }, 150);
+  });
+  
+  asyncTest("functions: defer", function() {
+    var deferred = false;
+    _.defer(function(bool){ deferred = bool; }, true);
+    _.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
+  });
+  
+  test("functions: wrap", function() {
+    var greet = function(name){ return "hi: " + name; };
+    var backwards = _.wrap(greet, function(func, name){ return func(name) + ' ' + name.split('').reverse().join(''); });
+    equals(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
+  });
+  
 });
diff --git a/test/test.html b/test/test.html
index 67415345d..aa2ca7a12 100644
--- a/test/test.html
+++ b/test/test.html
@@ -9,8 +9,8 @@
   <script type="text/javascript" src="../underscore.js"></script>
   <script type="text/javascript" src="collections.js"></script>
   <script type="text/javascript" src="arrays.js"></script>
-  <script type="text/javascript" src="functions.js"></script>
   <script type="text/javascript" src="objects.js"></script>
+  <script type="text/javascript" src="functions.js"></script>
   <script type="text/javascript" src="utility.js"></script>
   <script type="text/javascript" src="speed.js"></script>  
 </head>
diff --git a/underscore.js b/underscore.js
index 8f4ba6ee4..7c5ee29cb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -283,6 +283,29 @@ window._ = {
     });
   },
   
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  delay : function(func, wait) {
+    var args = _.toArray(arguments).slice(2);
+    return window.setTimeout(function(){ return func.apply(func, args); }, wait);
+  },
+  
+  // Defers a function, scheduling it to run after the current call stack has 
+  // cleared.
+  defer : function(func) {
+    return _.delay.apply(_, [func, 1].concat(_.toArray(arguments).slice(1)));
+  },
+  
+  // Returns the first function passed as an argument to the second, 
+  // allowing you to adjust arguments, run code before and after, and 
+  // conditionally execute the original function.
+  wrap : function(func, wrapper) {
+    return function() {
+      var args = [func].concat(_.toArray(arguments));
+      return wrapper.apply(wrapper, args);
+    };
+  },
+  
   /* ---------------- The following methods apply to objects ---------------- */
   
   // Retrieve the names of an object's properties.

From 25d3177bd733d26f307cbb80cbb80971a8c4bd93 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 21:11:19 -0400
Subject: [PATCH 008/533] further along with the HTML documentation

---
 index.html          | 80 +++++++++++++++++++++++++++++++--------------
 test/collections.js |  2 +-
 underscore.js       |  5 +--
 3 files changed, 59 insertions(+), 28 deletions(-)

diff --git a/index.html b/index.html
index aae21514d..fef1bc7eb 100644
--- a/index.html
+++ b/index.html
@@ -71,12 +71,12 @@
       Underscore provides 43-odd functions that support both the usual 
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash; 
       as well as more specialized helpers: function binding, javascript 
-      templating, deep equality testing, and so on. It delegates to the built-in 
+      templating, deep equality testing, and so on. It delegates to built-in 
       functions, if present, so 
       <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">Javascript 1.6</a> 
       compliant browsers will use the 
       native implementations of <b>forEach</b>, <b>map</b>, <b>filter</b>, 
-      <b>every</b> and <b>some</b>.
+      <b>every</b>, <b>some</b> and <b>indexOf</b>.
     </p>
     
     <p>
@@ -203,7 +203,7 @@ var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="all">
-        <b>all</b><code>_.(list, [iterator], [context])</code>
+        <b>all</b><code>_.all(list, [iterator], [context])</code>
         <br />
         Returns <i>true</i> if all of the values in the <b>list</b> pass the <b>iterator</b>
         truth test. If an <b>iterator</b> is not provided, the truthy value of 
@@ -216,7 +216,7 @@ _.all([true, 1, null, 'yes']);
 </pre>
 
       <p id="any">
-        <b>any</b><code>_.(list, iterator, [context])</code>
+        <b>any</b><code>_.any(list, iterator, [context])</code>
         <br />
         Returns <i>true</i> if any of the values in the <b>list</b> pass the
         <b>iterator</b> truth test. Short-circuits and stops traversing the list
@@ -228,60 +228,90 @@ _.any([null, 0, 'yes', false]);
 => true
 </pre>
 
-      <p id="">
-        <b>include</b><code>_.(list, iterator, [context])</code>
+      <p id="include">
+        <b>include</b><code>_.include(list, value)</code>
         <br />
-
+        Returns <i>true</i> if the <b>value</b> is present in the <b>list</b>, using
+        <i>==</i> to test equality. Uses <b>indexOf</b> internally, if <b>list</b>
+        is an Array.
       </p>
       <pre>
+_.include([1, 2, 3], 3);
+=> true
 </pre>
 
-      <p id="">
-        <b>invoke</b><code>_.(list, iterator, [context])</code>
+      <p id="invoke">
+        <b>invoke</b><code>_.invoke(list, methodName)</code>
         <br />
-
+        Calls the method named by <b>methodName</b> on each value in the <b>list</b>.
+        Any extra arguments passed to <b>invoke</b> will be forwarded on to the
+        method invocation.
       </p>
       <pre>
+_.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
+=> [[1, 5, 7], [1, 2, 3]]
 </pre>
 
-      <p id="">
-        <b>pluck</b><code>_.(list, iterator, [context])</code>
+      <p id="pluck">
+        <b>pluck</b><code>_.pluck(list, propertyName)</code>
         <br />
-
+        An optimized version of what is perhaps the most common use-case for 
+        <b>map</b>: returning a list of property values.
       </p>
       <pre>
+var stooges = [{name : 'moe', age : 40}, {name : 'larry', age : 50}, {name : 'curly', age : 60}];
+_.pluck(stooges, 'name');
+=> ["moe", "larry", "curly"]
 </pre>
 
-      <p id="">
-        <b>max</b><code>_.(list, iterator, [context])</code>
+      <p id="max">
+        <b>max</b><code>_.max(list, [iterator], [context])</code>
         <br />
-
+        Returns the maximum value in <b>list</b>. If <b>iterator</b> is passed,
+        it will be used on each value to generate the criterion by which the
+        value is ranked.
       </p>
       <pre>
+var stooges = [{name : 'moe', age : 40}, {name : 'larry', age : 50}, {name : 'curly', age : 60}];
+_.max(stooges, function(stooge){ return stooge.age; });
+=> {name : 'curly', age : 60};
 </pre>
 
-      <p id="">
-        <b>min</b><code>_.(list, iterator, [context])</code>
+      <p id="min">
+        <b>min</b><code>_.min(list, [iterator], [context])</code>
         <br />
-
+        Returns the minimum value in <b>list</b>. If <b>iterator</b> is passed,
+        it will be used on each value to generate the criterion by which the
+        value is ranked.
       </p>
       <pre>
+var numbers = [10, 5, 100, 2, 1000];
+_.min(numbers);
+=> 2
 </pre>
 
-      <p id="">
-        <b>sortBy</b><code>_.(list, iterator, [context])</code>
+      <p id="sortBy">
+        <b>sortBy</b><code>_.sortBy(list, iterator, [context])</code>
         <br />
-
+        Returns a sorted <b>list</b>, ranked by the results of running each
+        value through <b>iterator</b>.
       </p>
       <pre>
+_.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
+=> [5, 4, 6, 3, 1, 2]
 </pre>
 
-      <p id="">
-        <b>sortedIndex</b><code>_.(list, iterator, [context])</code>
+      <p id="sortedIndex">
+        <b>sortedIndex</b><code>_.sortedIndex(list, value, [iterator])</code>
         <br />
-
+        Uses a binary search to determine the index at which the <b>value</b>
+        should be inserted into the <b>list</b> in order to maintain the <b>list</b>'s
+        sorted order. If an <b>iterator</b> is passed, it will be used to compute
+        the sort ranking of each value.
       </p>
       <pre>
+_.sortedIndex([10, 20, 30, 40, 50], 35);
+=> 3
 </pre>
 
       <p id="">
diff --git a/test/collections.js b/test/collections.js
index 1ba3512b7..bed210ac2 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -100,7 +100,7 @@ $(document).ready(function() {
   
   test('collections: sortedIndex', function() {
     var numbers = [10, 20, 30, 40, 50], num = 35;
-    var index = _.sortedIndex(numbers, function(a, b) { return a < b ? -1 : a > b ? 1 : 0; }, num);
+    var index = _.sortedIndex(numbers, num);
     equals(index, 3, '35 should be inserted at index 3');
   });
   
diff --git a/underscore.js b/underscore.js
index 7c5ee29cb..2f7a58d30 100644
--- a/underscore.js
+++ b/underscore.js
@@ -171,11 +171,12 @@ window._ = {
   
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
-  sortedIndex : function(array, comparator, obj) {
+  sortedIndex : function(array, obj, iterator) {
+    iterator = iterator || function(val) { return val; };
     var low = 0, high = array.length;
     while (low < high) {
       var mid = (low + high) >> 1;
-      comparator(array[mid], obj) < 0 ? low = mid + 1 : high = mid;
+      iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
     }
     return low;
   },

From 9a881c70cbcd95b26b6af9dac075384fa236f2c7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 26 Oct 2009 23:09:56 -0400
Subject: [PATCH 009/533] more and more and more docs ... almost there

---
 index.html     | 337 ++++++++++++++++++++++++++++++++++++++++++++++---
 test/test.html |   2 +-
 underscore.js  |  16 ++-
 3 files changed, 329 insertions(+), 26 deletions(-)

diff --git a/index.html b/index.html
index fef1bc7eb..4fa43925c 100644
--- a/index.html
+++ b/index.html
@@ -19,7 +19,7 @@
       width: 550px;
     }
       #documentation p {
-        margin-bottom: 8px;
+        margin-bottom: 4px;
       }
     a, a:visited {
       padding: 0 2px;
@@ -34,7 +34,7 @@
     h1, h2, h3, h4, h5, h6 {
       margin-top: 35px;
     }
-    code, pre {
+    code, pre, tt {
       font-family: Monaco, Consolas, "Lucida Console", monospace;
       font-size: 12px;
       line-height: 18px;
@@ -45,7 +45,7 @@
       }
       pre {
         font-size: 12px;
-        padding-left: 12px;
+        padding: 2px 0 2px 12px;
         border-left: 6px solid #aaaa99;
         margin: 0px 0 35px;
       }
@@ -104,6 +104,13 @@
       <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>
     </p>
     
+    <p>
+      <b>Functions</b>
+      <br />
+      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>, 
+      <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>
+    </p>
+    
     <p>
       <b>Objects</b>
       <br />
@@ -113,13 +120,6 @@
       </span>
     </p>
     
-    <p>
-      <b>Functions</b>
-      <br />
-      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>, 
-      <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>
-    </p>
-    
     <p>
       <b>Utility</b>
       <br />
@@ -127,7 +127,8 @@
     </p>
     
     <div id="documentation">
-      <h2>Collections</h2>
+      
+      <h2>Collection Functions (Arrays or Objects)</h2>
       
       <p id="each">
         <b>each</b><code>_.each(list, iterator, [context])</code>
@@ -135,8 +136,9 @@
         Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
         passed. If <b>list</b> is a Javascript object, a pair with <b>key</b>
-        and <b>value</b> properties will be yielded. Delegates to the native 
-        <b>forEach</b> method if it exists.
+        and <b>value</b> properties will be yielded. If the list has an <b>each</b> 
+        method of its own defined, it will be used. Delegates to the native 
+        <b>forEach</b> function if it exists.
       </p>
       <pre>
 _.each([1, 2, 3], function(num){ alert(num); });
@@ -216,7 +218,7 @@ _.all([true, 1, null, 'yes']);
 </pre>
 
       <p id="any">
-        <b>any</b><code>_.any(list, iterator, [context])</code>
+        <b>any</b><code>_.any(list, [iterator], [context])</code>
         <br />
         Returns <i>true</i> if any of the values in the <b>list</b> pass the
         <b>iterator</b> truth test. Short-circuits and stops traversing the list
@@ -241,7 +243,7 @@ _.include([1, 2, 3], 3);
 </pre>
 
       <p id="invoke">
-        <b>invoke</b><code>_.invoke(list, methodName)</code>
+        <b>invoke</b><code>_.invoke(list, methodName, [*arguments])</code>
         <br />
         Calls the method named by <b>methodName</b> on each value in the <b>list</b>.
         Any extra arguments passed to <b>invoke</b> will be forwarded on to the
@@ -314,21 +316,318 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 => 3
 </pre>
 
-      <p id="">
-        <b>toArray</b><code>_.(list, iterator, [context])</code>
+      <p id="toArray">
+        <b>toArray</b><code>_.toArray(list)</code>
         <br />
+        Converts the <b>list</b> (anything that can be iterated over), into a
+        real Array. Useful for transmuting the <b>arguments</b> object.
+      </p>
+      <pre>
+(function(){ return _.toArray(arguments).slice(0); })(1, 2, 3);
+=> [1, 2, 3]
+</pre>
 
+      <p id="size">
+        <b>size</b><code>_.size(list)</code>
+        <br />
+        Return the number of values in the <b>list</b>.
+      </p>
+      <pre>
+_.size({one : 1, two : 2, three : 3});
+=> 3
+</pre>
+  
+      <h2>Array Functions</h2>
+      
+      <p id="first">
+        <b>first</b><code>_.first(array)</code>
+        <br />
+        Convenience to return the first element of an <b>array</b> (identical to <tt>array[0]</tt>).
+      </p>
+      <pre>
+_.first([3, 2, 1]);
+=> 3
+</pre>
+
+      <p id="last">
+        <b>last</b><code>_.last(array)</code>
+        <br />
+        Returns the last element of an <b>array</b>.
+      </p>
+      <pre>
+_.last([3, 2, 1]);
+=> 1
+</pre>
+
+      <p id="compact">
+        <b>compact</b><code>_.compact(array)</code>
+        <br />
+        Returns a copy of the <b>array</b> with all falsy values removed. 
+        In Javascript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>, 
+        <i>undefined</i> and <i>NaN</i> are all falsy.
+      </p>
+      <pre>
+_.compact([0, 1, false, 2, '', 3]);
+=> [1, 2, 3]
+</pre>
+
+      <p id="flatten">
+        <b>flatten</b><code>_.flatten(array)</code>
+        <br />
+        Flattens a nested <b>array</b> (the nesting can be to any depth).
+      </p>
+      <pre>
+_.flatten([1, [2], [3, [[[4]]]]]);
+=> [1, 2, 3, 4];
+</pre>
+
+      <p id="without">
+        <b>without</b><code>_.without(array, [*values])</code>
+        <br />
+        Returns a copy of the <b>array</b> with all instances of the <b>values</b>
+        removed. <i>==</i> is used for the equality test.
+      </p>
+      <pre>
+_.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
+=> [2, 3, 4]
+</pre>
+
+      <p id="uniq">
+        <b>uniq</b><code>_.uniq(array, [isSorted])</code>
+        <br />
+        Produces a duplicate-free version of the <b>array</b>, using <i>==</i> to test
+        object equality. If you know in advance that the <b>array</b> is sorted,
+        passing <i>true</i> for <b>isSorted</b> will run a much faster algorithm.
+      </p>
+      <pre>
+_.uniq([1, 2, 1, 3, 1, 4]);
+=> [1, 2, 3, 4]
+</pre>
+
+      <p id="intersect">
+        <b>intersect</b><code>_.intersect(*arrays)</code>
+        <br />
+        Computes the list of values that are the intersection of all the <b>arrays</b>.
+        Each value in the result is present in each of the <b>arrays</b>.
+      </p>
+      <pre>
+_.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+=> [1, 2]
+</pre>
+
+      <p id="zip">
+        <b>zip</b><code>_.zip(*arrays)</code>
+        <br />
+        Merges together the values of each of the <b>arrays</b> with the
+        values at the corresponding position. Useful when you have separate
+        data sources that are coordinated through matching array indexes.
+      </p>
+      <pre>
+_.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
+=> [["moe", 30, true], ["larry", 40, false], ["curly", 50, false]]
+</pre>
+
+      <p id="indexOf">
+        <b>indexOf</b><code>_.indexOf(array, value)</code>
+        <br />
+        Returns the index at which <b>value</b> can be found in the <b>array</b>, 
+        or <i>-1</i> if value is not present in the <b>array</b>. Uses the native
+        <b>indexOf</b> function unless it's missing.
+      </p>
+      <pre>
+_.indexOf([1, 2, 3], 2);
+=> 1
+</pre>
+
+      <h2>Function (uh, ahem) Functions</h2>
+
+      <p id="bind">
+        <b>bind</b><code>_.bind(function, context, [*arguments])</code>
+        <br />
+        Bind a <b>function</b> to a <b>context</b> object, meaning that whenever
+        the function is called, the value of <i>this</i> will be the <b>context</b>.
+        Optionally, bind <b>arguments</b> to the <b>function</b> to pre-fill them,
+        also known as <b>currying</b>. 
+      </p>
+      <pre>
+var func = function(greeting){ return greeting + ': ' + this.name };
+func = _.bind(func, {name : 'moe'}, 'hi');
+func();
+=> 'hi: moe'
+</pre>
+
+      <p id="bindAll">
+        <b>bindAll</b><code>_.bindAll(*methodNames, context)</code>
+        <br />
+        Binds a number of methods on the <b>context</b> object, specified by 
+        <b>methodNames</b>, to be run in the context of that object whenever they
+        are invoked. Very handy for binding functions that are going to be used
+        as event handlers, which would otherwise be invoked with a fairly useless 
+        <i>this</i>.
+      </p>
+      <pre>
+var buttonView = {
+  label   : 'underscore', 
+  onClick : function(){ alert('clicked: ' + this.label); },
+  onHover : function(){ console.log('hovering: ' + this.label); }
+};
+_.bindAll('onClick', 'onHover', buttonView);
+jQuery('#underscore_button').bind('click', buttonView.onClick);
+=> When the button is clicked, this.label will have the correct value...
+</pre>
+
+      <p id="delay">
+        <b>delay</b><code>_.delay(function, wait, [*arguments])</code>
+        <br />
+        Much like <b>setTimeout</b>, invokes <b>function</b> after <b>wait</b>
+        milliseconds. If you pass the optional <b>arguments</b>, they will be
+        forwarded on to the <b>function</b> when it is invoked.
+      </p>
+      <pre>
+var log = _.bind(console.log, console);
+_.delay(log, 1000, 'logged later');
+=> 'logged later' // Appears after one second.
+</pre>
+
+      <p id="defer">
+        <b>defer</b><code>_.defer(function)</code>
+        <br />
+        Defers invoking the <b>function</b> until the current call stack has cleared,
+        similar to using <b>setTimeout</b> with a delay of 0. Useful for performing
+        expensive computations or HTML rendering in chunks without blocking the UI thread
+        from updating.
+      </p>
+      <pre>
+_.defer(function(){ alert('deferred'); });
+// Returns from the function before the alert runs.
+</pre>
+
+      <p id="wrap">
+        <b>wrap</b><code>_.wrap(function, wrapper)</code>
+        <br />
+        Wraps the first <b>function</b> inside of the <b>wrapper</b> function, 
+        passing it as the first argument. This allows the <b>wrapper</b> to 
+        execute code before and after the <b>function</b> runs, adjust the arguments,
+        and execute it conditionally.
+      </p>
+      <pre>
+var hello = function(name) { return "hello: " + name; };
+hello = _.wrap(hello, function(func) {
+  return "before, " + func("moe") + ", after";
+});
+hello();
+=> before, hello: moe, after
+</pre>
+
+      <h2>Object Functions</h2>
+
+      <p id="keys">
+        <b>keys</b><code>_.keys(object)</code>
+        <br />
+        Retrieve all the names of the <b>object</b>'s properties.
+      </p>
+      <pre>
+_.keys({one : 1, two : 2, three : 3});
+=> ["one", "two", "three"]
+</pre>
+
+      <p id="values">
+        <b>values</b><code>_.values(object)</code>
+        <br />
+        Return all of the values of the <b>object</b>'s properties.
+      </p>
+      <pre>
+_.values({one : 1, two : 2, three : 3});
+=> [1, 2, 3]
+</pre>
+
+      <p id="extend">
+        <b>extend</b><code>_.extend(destination, source)</code>
+        <br />
+        Copy all of the properties in the <b>source</b> object over to the 
+        <b>destination</b> object.
+      </p>
+      <pre>
+_.extend({name : 'moe'}, {age : 50});
+=> {name : 'moe', age : 50}
+</pre>
+
+      <p id="clone">
+        <b>clone</b><code>_.clone(object)</code>
+        <br />
+        Create a shallow-copied clone of the <b>object</b>. Any nested objects
+        or arrays will be copied by reference, not duplicated.
+      </p>
+      <pre>
+_.clone({name : 'moe'});
+=> {name : 'moe'};
+</pre>
+
+      <p id="isEqual">
+        <b>isEqual</b><code>_.isEqual(object, other)</code>
+        <br />
+        Performs an optimized deep comparison between the two objects, to determine
+        if they should be considered equal.
+      </p>
+      <pre>
+var moe   = {name : 'moe', luckyNumbers : [13, 27, 34]};
+var clone = {name : 'moe', luckyNumbers : [13, 27, 34]};
+moe == clone;
+=> false
+_.isEqual(moe, clone);
+=> true
+</pre>
+
+      <p id="">
+        <b>isElement</b><code>_.()</code>
+        <br />
       </p>
       <pre>
 </pre>
 
       <p id="">
-        <b>size</b><code>_.(list, iterator, [context])</code>
+        <b>isArray</b><code>_.()</code>
         <br />
-
       </p>
       <pre>
 </pre>
+
+      <p id="">
+        <b>isFunction</b><code>_.()</code>
+        <br />
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>isUndefined</b><code>_.()</code>
+        <br />
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>toString</b><code>_.()</code>
+        <br />
+      </p>
+      <pre>
+</pre>
+
+      <h2>Utility Functions</h2>
+
+      <p id="">
+        <b>uniqueId</b><code>_.()</code>
+        <br />
+      </p>
+      <pre>
+</pre>
+
+      <p id="">
+        <b>template</b><code>_.()</code>
+        <br />
+      </p>
+      <pre>
+</pre>  
       
     </div>
     
diff --git a/test/test.html b/test/test.html
index aa2ca7a12..67415345d 100644
--- a/test/test.html
+++ b/test/test.html
@@ -9,8 +9,8 @@
   <script type="text/javascript" src="../underscore.js"></script>
   <script type="text/javascript" src="collections.js"></script>
   <script type="text/javascript" src="arrays.js"></script>
-  <script type="text/javascript" src="objects.js"></script>
   <script type="text/javascript" src="functions.js"></script>
+  <script type="text/javascript" src="objects.js"></script>
   <script type="text/javascript" src="utility.js"></script>
   <script type="text/javascript" src="speed.js"></script>  
 </head>
diff --git a/underscore.js b/underscore.js
index 2f7a58d30..7a42cbb12 100644
--- a/underscore.js
+++ b/underscore.js
@@ -227,17 +227,21 @@ window._ = {
   
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
-  uniq : function(array, sorted) {
+  uniq : function(array, isSorted) {
     return _.inject(array, [], function(memo, el, i) {
-      if (0 == i || (sorted ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
+      if (0 == i || (isSorted ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
       return memo;
     });
   },
   
-  // Produce an array that contains every item shared between two given arrays.
-  intersect : function(array1, array2) {
-    return _.select(_.uniq(array1), function(item1) {
-      return _.detect(array2, function(item2) { return item1 === item2; });
+  // Produce an array that contains every item shared between all the 
+  // passed-in arrays.
+  intersect : function(array) {
+    var rest = _.toArray(arguments).slice(1);
+    return _.select(_.uniq(array), function(item1) {
+      return _.all(rest, function(other) { 
+        return _.detect(other, function(item2){ return item1 === item2; });
+      });
     });
   },
   

From 5e3f783a231ced7d41188499614678b59015e242 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 12:29:24 -0400
Subject: [PATCH 010/533] docs done -- going back to code comments

---
 index.html      | 137 ++++++++++++++++++++++++++++--------------------
 test/arrays.js  |   2 +-
 test/objects.js |   4 --
 underscore.js   |  26 +++++----
 4 files changed, 94 insertions(+), 75 deletions(-)

diff --git a/index.html b/index.html
index 4fa43925c..535df71bb 100644
--- a/index.html
+++ b/index.html
@@ -116,7 +116,7 @@
       <br />
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>, 
       <a href="#extend">extend</a>, <a href="#clone">clone</a>, <a href="#isEqual">isEqual</a>, <a href="#isElement">isElement</a>, 
-      <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isUndefined">isUndefined</a>, <a href="#toString">toString</a>
+      <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isUndefined">isUndefined</a>
       </span>
     </p>
     
@@ -142,7 +142,7 @@
       </p>
       <pre>
 _.each([1, 2, 3], function(num){ alert(num); });
-=> alerts each number in turn...</pre>
+=&gt; alerts each number in turn...</pre>
       
       <p id="map">
         <b>map</b><code>_.map(list, iterator, [context])</code>
@@ -153,7 +153,7 @@ _.each([1, 2, 3], function(num){ alert(num); });
       </p>
       <pre>
 _.map([1, 2, 3], function(num){ return num * 3 });
-=> [3, 6, 9]</pre>
+=&gt; [3, 6, 9]</pre>
 
       <p id="inject">
         <b>inject</b><code>_.inject(list, memo, iterator, [context])</code>
@@ -165,7 +165,7 @@ _.map([1, 2, 3], function(num){ return num * 3 });
       </p>
       <pre>
 var sum = _.inject([1, 2, 3], 0, function(memo, num){ return memo + num });
-=> 6
+=&gt; 6
 </pre>
 
       <p id="detect">
@@ -178,7 +178,7 @@ var sum = _.inject([1, 2, 3], 0, function(memo, num){ return memo + num });
       </p>
       <pre>
 var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-=> 2
+=&gt; 2
 </pre>
 
       <p id="select">
@@ -190,7 +190,7 @@ var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
       </p>
       <pre>
 var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-=> [2, 4, 6]
+=&gt; [2, 4, 6]
 </pre>
 
       <p id="reject">
@@ -201,7 +201,7 @@ var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
       </p>
       <pre>
 var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-=> [1, 3, 5]
+=&gt; [1, 3, 5]
 </pre>
 
       <p id="all">
@@ -214,7 +214,7 @@ var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
       </p>
       <pre>
 _.all([true, 1, null, 'yes']);
-=> false
+=&gt; false
 </pre>
 
       <p id="any">
@@ -227,7 +227,7 @@ _.all([true, 1, null, 'yes']);
       </p>
       <pre>
 _.any([null, 0, 'yes', false]);
-=> true
+=&gt; true
 </pre>
 
       <p id="include">
@@ -239,7 +239,7 @@ _.any([null, 0, 'yes', false]);
       </p>
       <pre>
 _.include([1, 2, 3], 3);
-=> true
+=&gt; true
 </pre>
 
       <p id="invoke">
@@ -251,7 +251,7 @@ _.include([1, 2, 3], 3);
       </p>
       <pre>
 _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
-=> [[1, 5, 7], [1, 2, 3]]
+=&gt; [[1, 5, 7], [1, 2, 3]]
 </pre>
 
       <p id="pluck">
@@ -263,7 +263,7 @@ _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
       <pre>
 var stooges = [{name : 'moe', age : 40}, {name : 'larry', age : 50}, {name : 'curly', age : 60}];
 _.pluck(stooges, 'name');
-=> ["moe", "larry", "curly"]
+=&gt; ["moe", "larry", "curly"]
 </pre>
 
       <p id="max">
@@ -276,7 +276,7 @@ _.pluck(stooges, 'name');
       <pre>
 var stooges = [{name : 'moe', age : 40}, {name : 'larry', age : 50}, {name : 'curly', age : 60}];
 _.max(stooges, function(stooge){ return stooge.age; });
-=> {name : 'curly', age : 60};
+=&gt; {name : 'curly', age : 60};
 </pre>
 
       <p id="min">
@@ -289,7 +289,7 @@ _.max(stooges, function(stooge){ return stooge.age; });
       <pre>
 var numbers = [10, 5, 100, 2, 1000];
 _.min(numbers);
-=> 2
+=&gt; 2
 </pre>
 
       <p id="sortBy">
@@ -300,7 +300,7 @@ _.min(numbers);
       </p>
       <pre>
 _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
-=> [5, 4, 6, 3, 1, 2]
+=&gt; [5, 4, 6, 3, 1, 2]
 </pre>
 
       <p id="sortedIndex">
@@ -313,7 +313,7 @@ _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
       </p>
       <pre>
 _.sortedIndex([10, 20, 30, 40, 50], 35);
-=> 3
+=&gt; 3
 </pre>
 
       <p id="toArray">
@@ -324,7 +324,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
       </p>
       <pre>
 (function(){ return _.toArray(arguments).slice(0); })(1, 2, 3);
-=> [1, 2, 3]
+=&gt; [1, 2, 3]
 </pre>
 
       <p id="size">
@@ -334,7 +334,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
       </p>
       <pre>
 _.size({one : 1, two : 2, three : 3});
-=> 3
+=&gt; 3
 </pre>
   
       <h2>Array Functions</h2>
@@ -346,7 +346,7 @@ _.size({one : 1, two : 2, three : 3});
       </p>
       <pre>
 _.first([3, 2, 1]);
-=> 3
+=&gt; 3
 </pre>
 
       <p id="last">
@@ -356,7 +356,7 @@ _.first([3, 2, 1]);
       </p>
       <pre>
 _.last([3, 2, 1]);
-=> 1
+=&gt; 1
 </pre>
 
       <p id="compact">
@@ -368,7 +368,7 @@ _.last([3, 2, 1]);
       </p>
       <pre>
 _.compact([0, 1, false, 2, '', 3]);
-=> [1, 2, 3]
+=&gt; [1, 2, 3]
 </pre>
 
       <p id="flatten">
@@ -378,7 +378,7 @@ _.compact([0, 1, false, 2, '', 3]);
       </p>
       <pre>
 _.flatten([1, [2], [3, [[[4]]]]]);
-=> [1, 2, 3, 4];
+=&gt; [1, 2, 3, 4];
 </pre>
 
       <p id="without">
@@ -389,7 +389,7 @@ _.flatten([1, [2], [3, [[[4]]]]]);
       </p>
       <pre>
 _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
-=> [2, 3, 4]
+=&gt; [2, 3, 4]
 </pre>
 
       <p id="uniq">
@@ -401,7 +401,7 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
       </p>
       <pre>
 _.uniq([1, 2, 1, 3, 1, 4]);
-=> [1, 2, 3, 4]
+=&gt; [1, 2, 3, 4]
 </pre>
 
       <p id="intersect">
@@ -412,7 +412,7 @@ _.uniq([1, 2, 1, 3, 1, 4]);
       </p>
       <pre>
 _.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
-=> [1, 2]
+=&gt; [1, 2]
 </pre>
 
       <p id="zip">
@@ -424,7 +424,7 @@ _.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
       </p>
       <pre>
 _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
-=> [["moe", 30, true], ["larry", 40, false], ["curly", 50, false]]
+=&gt; [["moe", 30, true], ["larry", 40, false], ["curly", 50, false]]
 </pre>
 
       <p id="indexOf">
@@ -436,7 +436,7 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
       </p>
       <pre>
 _.indexOf([1, 2, 3], 2);
-=> 1
+=&gt; 1
 </pre>
 
       <h2>Function (uh, ahem) Functions</h2>
@@ -453,7 +453,7 @@ _.indexOf([1, 2, 3], 2);
 var func = function(greeting){ return greeting + ': ' + this.name };
 func = _.bind(func, {name : 'moe'}, 'hi');
 func();
-=> 'hi: moe'
+=&gt; 'hi: moe'
 </pre>
 
       <p id="bindAll">
@@ -473,7 +473,7 @@ var buttonView = {
 };
 _.bindAll('onClick', 'onHover', buttonView);
 jQuery('#underscore_button').bind('click', buttonView.onClick);
-=> When the button is clicked, this.label will have the correct value...
+=&gt; When the button is clicked, this.label will have the correct value...
 </pre>
 
       <p id="delay">
@@ -486,7 +486,7 @@ jQuery('#underscore_button').bind('click', buttonView.onClick);
       <pre>
 var log = _.bind(console.log, console);
 _.delay(log, 1000, 'logged later');
-=> 'logged later' // Appears after one second.
+=&gt; 'logged later' // Appears after one second.
 </pre>
 
       <p id="defer">
@@ -516,7 +516,7 @@ hello = _.wrap(hello, function(func) {
   return "before, " + func("moe") + ", after";
 });
 hello();
-=> before, hello: moe, after
+=&gt; before, hello: moe, after
 </pre>
 
       <h2>Object Functions</h2>
@@ -528,7 +528,7 @@ hello();
       </p>
       <pre>
 _.keys({one : 1, two : 2, three : 3});
-=> ["one", "two", "three"]
+=&gt; ["one", "two", "three"]
 </pre>
 
       <p id="values">
@@ -538,7 +538,7 @@ _.keys({one : 1, two : 2, three : 3});
       </p>
       <pre>
 _.values({one : 1, two : 2, three : 3});
-=> [1, 2, 3]
+=&gt; [1, 2, 3]
 </pre>
 
       <p id="extend">
@@ -549,7 +549,7 @@ _.values({one : 1, two : 2, three : 3});
       </p>
       <pre>
 _.extend({name : 'moe'}, {age : 50});
-=> {name : 'moe', age : 50}
+=&gt; {name : 'moe', age : 50}
 </pre>
 
       <p id="clone">
@@ -560,7 +560,7 @@ _.extend({name : 'moe'}, {age : 50});
       </p>
       <pre>
 _.clone({name : 'moe'});
-=> {name : 'moe'};
+=&gt; {name : 'moe'};
 </pre>
 
       <p id="isEqual">
@@ -573,60 +573,85 @@ _.clone({name : 'moe'});
 var moe   = {name : 'moe', luckyNumbers : [13, 27, 34]};
 var clone = {name : 'moe', luckyNumbers : [13, 27, 34]};
 moe == clone;
-=> false
+=&gt; false
 _.isEqual(moe, clone);
-=> true
+=&gt; true
 </pre>
 
-      <p id="">
-        <b>isElement</b><code>_.()</code>
+      <p id="isElement">
+        <b>isElement</b><code>_.isElement(object)</code>
         <br />
+        Returns <i>true</i> if <b>object</b> is a DOM element.
       </p>
       <pre>
+_.isElement(jQuery('body')[0]);
+=&gt; true
 </pre>
 
-      <p id="">
-        <b>isArray</b><code>_.()</code>
+      <p id="isArray">
+        <b>isArray</b><code>_.isArray(object)</code>
         <br />
+        Returns <i>true</i> if <b>object</b> is an Array.
       </p>
       <pre>
+(function(){ return _.isArray(arguments); })();
+=&gt; false
+_.isArray([1,2,3]);
+=&gt; true
 </pre>
 
-      <p id="">
-        <b>isFunction</b><code>_.()</code>
+      <p id="isFunction">
+        <b>isFunction</b><code>_.isFunction(object)</code>
         <br />
+        Returns <i>true</i> if <b>object</b> is a Function.
       </p>
       <pre>
+_.isFunction(alert);
+=&gt; true
 </pre>
 
-      <p id="">
-        <b>isUndefined</b><code>_.()</code>
-        <br />
-      </p>
-      <pre>
-</pre>
-
-      <p id="">
-        <b>toString</b><code>_.()</code>
+      <p id="isUndefined">
+        <b>isUndefined</b><code>_.isUndefined(variable)</code>
         <br />
+        Returns <i>true</i> if <b>variable</b> is <i>undefined</i>.
       </p>
       <pre>
+_.isUndefined(window.missingVariable);
+=&gt; true
 </pre>
 
       <h2>Utility Functions</h2>
 
-      <p id="">
-        <b>uniqueId</b><code>_.()</code>
+      <p id="uniqueId">
+        <b>uniqueId</b><code>_.uniqueId([prefix])</code>
         <br />
+        Generate a globally-unique id for client-side models or DOM elements 
+        that need one. If <b>prefix</b> is passed, the id will be appended to it.
       </p>
       <pre>
+_.uniqueId('contact_');
+=&gt; 'contact_104'
 </pre>
 
-      <p id="">
-        <b>template</b><code>_.()</code>
+      <p id="template">
+        <b>template</b><code>_.template(templateString)</code>
         <br />
+        Compiles Javascript templates into functions that can be evaluated
+        for rendering. Useful for rendering complicated bits of HTML from JSON
+        data sources. Template functions can both interpolate variables, using<br />
+        <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary Javascript code, with 
+        <i>&lt;% &hellip; %&gt;</i>. When you evaluate a template, pass in a
+        context object that has properties corresponding to the template's free
+        variables.
       </p>
       <pre>
+var compiled = _.template("hello: &lt;%= name %&gt;");
+compiled({name : 'moe'});
+=&gt; "hello: moe"
+
+var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&gt;&lt;/li&gt; &lt;% }); %&gt;";
+_.template(list, {people : ['moe', 'curly', 'larry']});
+=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
 </pre>  
       
     </div>
diff --git a/test/arrays.js b/test/arrays.js
index 7b4e45692..e59397996 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -40,7 +40,7 @@ $(document).ready(function() {
   test('arrays: zip', function() {
     var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true];
     var stooges = _.zip(names, ages, leaders);
-    equals(_.toString(stooges), 'moe,30,true,larry,40,,curly,50,', 'zipped together arrays of different lengths');
+    equals(String(stooges), 'moe,30,true,larry,40,,curly,50,', 'zipped together arrays of different lengths');
   });
   
   test("arrays: indexOf", function() {
diff --git a/test/objects.js b/test/objects.js
index 624d67bfe..eb73245d8 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -58,9 +58,5 @@ $(document).ready(function() {
     ok(_.isUndefined(), 'nothing is undefined');
     ok(_.isUndefined(undefined), 'undefined is undefined');
   });
-  
-  test("objects: toString", function() {
-    equals(_.toString([1, 2, 3]), '1,2,3', 'object can be converted to printable strings');
-  });
 
 });
diff --git a/underscore.js b/underscore.js
index 7a42cbb12..9f2f403e8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,6 +1,11 @@
-// Javascript can be so much more pleasant when it's functional -- re-implement
-// a bunch of utility methods from Prototype and Steele's Functional...
+// Underscore.js
+// (c) 2009 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the terms of the MIT license.
+// For all details and documentation:
+// http://fdjklsafjsdalk
 window._ = {
+  
+  VERSION : '0.1.0',
       
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, _each, arrays, and raw objects.
@@ -345,17 +350,15 @@ window._ = {
     if (a == b) return true;
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
+    // If a is not an object by this point, we can't handle it.
+    if (atype !== 'object') return false;
     // Nothing else worked, deep compare the contents.
-    return atype === 'object' && _._isEqualContents(a, b);
-  },
-  
-  // Objects have equal contents if they have the same keys, and all the values
-  // are equal (as defined by _.isEqual).
-  _isEqualContents : function(a, b) {
     var aKeys = _.keys(a), bKeys = _.keys(b);
+    // Different object sizes?
     if (aKeys.length != bKeys.length) return false;
+    // Recursive comparison of contents.
     for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
-    return true; 
+    return true;
   },
   
   // Is a given value a DOM element?
@@ -378,11 +381,6 @@ window._ = {
     return typeof obj == 'undefined';
   },
   
-  // Convert any value into printable string form.
-  toString : function(obj) {
-    return obj == null ? '' : String(obj);
-  },
-  
   /* -------------- The following methods are utility methods --------------- */
   
   // Generate a unique integer id (unique within the entire client session).

From ef10906b5f82f873960786578565d42d14163771 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 13:26:36 -0400
Subject: [PATCH 011/533] getting ready for 0.1

---
 LICENSE        |  22 +++++++++++
 README         |  10 +++++
 index.html     | 102 +++++++++++++++++++++++++------------------------
 test/speed.js  |  16 ++++++++
 test/test.html |  10 ++++-
 underscore.js  |  10 +++--
 6 files changed, 115 insertions(+), 55 deletions(-)
 create mode 100644 LICENSE
 create mode 100644 README

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 000000000..9644b34c3
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2009 Jeremy Ashkenas, DocumentCloud
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/README b/README
new file mode 100644
index 000000000..037e284fe
--- /dev/null
+++ b/README
@@ -0,0 +1,10 @@
+            __           
+           /\_\    ____  
+           \/\ \  /',__\ 
+         __ \ \ \/\__, `\
+        /\_\_\ \ \/\____/
+ _______\/_/\ \_\ \/___/ 
+/\______\  \ \____/      
+\/______/   \/___/
+
+See: documentcloud.github.com/underscore
\ No newline at end of file
diff --git a/index.html b/index.html
index 535df71bb..9bec576ee 100644
--- a/index.html
+++ b/index.html
@@ -12,8 +12,7 @@
     }
     div.container {
       width: 720px;
-      margin: 0 auto;
-      margin-top: 50px;  
+      margin: 50px 0 50px 50px;
     }
     p {
       width: 550px;
@@ -32,7 +31,10 @@
       background: #f0c095;
     }
     h1, h2, h3, h4, h5, h6 {
-      margin-top: 35px;
+      margin-top: 40px;
+    }
+    b.method_name {
+      font-size: 18px;
     }
     code, pre, tt {
       font-family: Monaco, Consolas, "Lucida Console", monospace;
@@ -47,7 +49,7 @@
         font-size: 12px;
         padding: 2px 0 2px 12px;
         border-left: 6px solid #aaaa99;
-        margin: 0px 0 35px;
+        margin: 0px 0 30px;
       }
   </style>
 </head>
@@ -131,7 +133,7 @@
       <h2>Collection Functions (Arrays or Objects)</h2>
       
       <p id="each">
-        <b>each</b><code>_.each(list, iterator, [context])</code>
+        <b class="method_name">each</b><code>_.each(list, iterator, [context])</code>
         <br />
         Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
@@ -145,7 +147,7 @@ _.each([1, 2, 3], function(num){ alert(num); });
 =&gt; alerts each number in turn...</pre>
       
       <p id="map">
-        <b>map</b><code>_.map(list, iterator, [context])</code>
+        <b class="method_name">map</b><code>_.map(list, iterator, [context])</code>
         <br />
         Produces a new array of values by mapping each value in <b>list</b> 
         through a transformation function (<b>iterator</b>). If the native 
@@ -156,7 +158,7 @@ _.map([1, 2, 3], function(num){ return num * 3 });
 =&gt; [3, 6, 9]</pre>
 
       <p id="inject">
-        <b>inject</b><code>_.inject(list, memo, iterator, [context])</code>
+        <b class="method_name">inject</b><code>_.inject(list, memo, iterator, [context])</code>
         <br />
         Also known as <b>reduce</b> and <b>foldl</b>, <b>inject</b> reduces a 
         <b>list</b> of values into a single value. <b>Memo</b> is the initial state
@@ -169,7 +171,7 @@ var sum = _.inject([1, 2, 3], 0, function(memo, num){ return memo + num });
 </pre>
 
       <p id="detect">
-        <b>detect</b><code>_.detect(list, iterator, [context])</code>
+        <b class="method_name">detect</b><code>_.detect(list, iterator, [context])</code>
         <br />
         Looks through each value in the <b>list</b>, returning the first one that 
         passes a truth test (<b>iterator</b>). The function returns as 
@@ -182,7 +184,7 @@ var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="select">
-        <b>select</b><code>_.select(list, iterator, [context])</code>
+        <b class="method_name">select</b><code>_.select(list, iterator, [context])</code>
         <br />
         Looks through each value in the <b>list</b>, returning an array of all
         the values that pass a truth test (<b>iterator</b>). Delegates to the
@@ -194,7 +196,7 @@ var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="reject">
-        <b>reject</b><code>_.reject(list, iterator, [context])</code>
+        <b class="method_name">reject</b><code>_.reject(list, iterator, [context])</code>
         <br />
         Returns the values in <b>list</b> without the elements that the truth
         test (<b>iterator</b>) passes. The opposite of <b>select</b>.
@@ -205,7 +207,7 @@ var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="all">
-        <b>all</b><code>_.all(list, [iterator], [context])</code>
+        <b class="method_name">all</b><code>_.all(list, [iterator], [context])</code>
         <br />
         Returns <i>true</i> if all of the values in the <b>list</b> pass the <b>iterator</b>
         truth test. If an <b>iterator</b> is not provided, the truthy value of 
@@ -218,7 +220,7 @@ _.all([true, 1, null, 'yes']);
 </pre>
 
       <p id="any">
-        <b>any</b><code>_.any(list, [iterator], [context])</code>
+        <b class="method_name">any</b><code>_.any(list, [iterator], [context])</code>
         <br />
         Returns <i>true</i> if any of the values in the <b>list</b> pass the
         <b>iterator</b> truth test. Short-circuits and stops traversing the list
@@ -231,7 +233,7 @@ _.any([null, 0, 'yes', false]);
 </pre>
 
       <p id="include">
-        <b>include</b><code>_.include(list, value)</code>
+        <b class="method_name">include</b><code>_.include(list, value)</code>
         <br />
         Returns <i>true</i> if the <b>value</b> is present in the <b>list</b>, using
         <i>==</i> to test equality. Uses <b>indexOf</b> internally, if <b>list</b>
@@ -243,7 +245,7 @@ _.include([1, 2, 3], 3);
 </pre>
 
       <p id="invoke">
-        <b>invoke</b><code>_.invoke(list, methodName, [*arguments])</code>
+        <b class="method_name">invoke</b><code>_.invoke(list, methodName, [*arguments])</code>
         <br />
         Calls the method named by <b>methodName</b> on each value in the <b>list</b>.
         Any extra arguments passed to <b>invoke</b> will be forwarded on to the
@@ -255,7 +257,7 @@ _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
 </pre>
 
       <p id="pluck">
-        <b>pluck</b><code>_.pluck(list, propertyName)</code>
+        <b class="method_name">pluck</b><code>_.pluck(list, propertyName)</code>
         <br />
         An optimized version of what is perhaps the most common use-case for 
         <b>map</b>: returning a list of property values.
@@ -267,7 +269,7 @@ _.pluck(stooges, 'name');
 </pre>
 
       <p id="max">
-        <b>max</b><code>_.max(list, [iterator], [context])</code>
+        <b class="method_name">max</b><code>_.max(list, [iterator], [context])</code>
         <br />
         Returns the maximum value in <b>list</b>. If <b>iterator</b> is passed,
         it will be used on each value to generate the criterion by which the
@@ -280,7 +282,7 @@ _.max(stooges, function(stooge){ return stooge.age; });
 </pre>
 
       <p id="min">
-        <b>min</b><code>_.min(list, [iterator], [context])</code>
+        <b class="method_name">min</b><code>_.min(list, [iterator], [context])</code>
         <br />
         Returns the minimum value in <b>list</b>. If <b>iterator</b> is passed,
         it will be used on each value to generate the criterion by which the
@@ -293,7 +295,7 @@ _.min(numbers);
 </pre>
 
       <p id="sortBy">
-        <b>sortBy</b><code>_.sortBy(list, iterator, [context])</code>
+        <b class="method_name">sortBy</b><code>_.sortBy(list, iterator, [context])</code>
         <br />
         Returns a sorted <b>list</b>, ranked by the results of running each
         value through <b>iterator</b>.
@@ -304,7 +306,7 @@ _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
 </pre>
 
       <p id="sortedIndex">
-        <b>sortedIndex</b><code>_.sortedIndex(list, value, [iterator])</code>
+        <b class="method_name">sortedIndex</b><code>_.sortedIndex(list, value, [iterator])</code>
         <br />
         Uses a binary search to determine the index at which the <b>value</b>
         should be inserted into the <b>list</b> in order to maintain the <b>list</b>'s
@@ -317,7 +319,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 </pre>
 
       <p id="toArray">
-        <b>toArray</b><code>_.toArray(list)</code>
+        <b class="method_name">toArray</b><code>_.toArray(list)</code>
         <br />
         Converts the <b>list</b> (anything that can be iterated over), into a
         real Array. Useful for transmuting the <b>arguments</b> object.
@@ -328,7 +330,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 </pre>
 
       <p id="size">
-        <b>size</b><code>_.size(list)</code>
+        <b class="method_name">size</b><code>_.size(list)</code>
         <br />
         Return the number of values in the <b>list</b>.
       </p>
@@ -340,7 +342,7 @@ _.size({one : 1, two : 2, three : 3});
       <h2>Array Functions</h2>
       
       <p id="first">
-        <b>first</b><code>_.first(array)</code>
+        <b class="method_name">first</b><code>_.first(array)</code>
         <br />
         Convenience to return the first element of an <b>array</b> (identical to <tt>array[0]</tt>).
       </p>
@@ -350,7 +352,7 @@ _.first([3, 2, 1]);
 </pre>
 
       <p id="last">
-        <b>last</b><code>_.last(array)</code>
+        <b class="method_name">last</b><code>_.last(array)</code>
         <br />
         Returns the last element of an <b>array</b>.
       </p>
@@ -360,7 +362,7 @@ _.last([3, 2, 1]);
 </pre>
 
       <p id="compact">
-        <b>compact</b><code>_.compact(array)</code>
+        <b class="method_name">compact</b><code>_.compact(array)</code>
         <br />
         Returns a copy of the <b>array</b> with all falsy values removed. 
         In Javascript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>, 
@@ -372,7 +374,7 @@ _.compact([0, 1, false, 2, '', 3]);
 </pre>
 
       <p id="flatten">
-        <b>flatten</b><code>_.flatten(array)</code>
+        <b class="method_name">flatten</b><code>_.flatten(array)</code>
         <br />
         Flattens a nested <b>array</b> (the nesting can be to any depth).
       </p>
@@ -382,7 +384,7 @@ _.flatten([1, [2], [3, [[[4]]]]]);
 </pre>
 
       <p id="without">
-        <b>without</b><code>_.without(array, [*values])</code>
+        <b class="method_name">without</b><code>_.without(array, [*values])</code>
         <br />
         Returns a copy of the <b>array</b> with all instances of the <b>values</b>
         removed. <i>==</i> is used for the equality test.
@@ -393,7 +395,7 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
 </pre>
 
       <p id="uniq">
-        <b>uniq</b><code>_.uniq(array, [isSorted])</code>
+        <b class="method_name">uniq</b><code>_.uniq(array, [isSorted])</code>
         <br />
         Produces a duplicate-free version of the <b>array</b>, using <i>==</i> to test
         object equality. If you know in advance that the <b>array</b> is sorted,
@@ -405,7 +407,7 @@ _.uniq([1, 2, 1, 3, 1, 4]);
 </pre>
 
       <p id="intersect">
-        <b>intersect</b><code>_.intersect(*arrays)</code>
+        <b class="method_name">intersect</b><code>_.intersect(*arrays)</code>
         <br />
         Computes the list of values that are the intersection of all the <b>arrays</b>.
         Each value in the result is present in each of the <b>arrays</b>.
@@ -416,7 +418,7 @@ _.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
 </pre>
 
       <p id="zip">
-        <b>zip</b><code>_.zip(*arrays)</code>
+        <b class="method_name">zip</b><code>_.zip(*arrays)</code>
         <br />
         Merges together the values of each of the <b>arrays</b> with the
         values at the corresponding position. Useful when you have separate
@@ -428,7 +430,7 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
 </pre>
 
       <p id="indexOf">
-        <b>indexOf</b><code>_.indexOf(array, value)</code>
+        <b class="method_name">indexOf</b><code>_.indexOf(array, value)</code>
         <br />
         Returns the index at which <b>value</b> can be found in the <b>array</b>, 
         or <i>-1</i> if value is not present in the <b>array</b>. Uses the native
@@ -442,7 +444,7 @@ _.indexOf([1, 2, 3], 2);
       <h2>Function (uh, ahem) Functions</h2>
 
       <p id="bind">
-        <b>bind</b><code>_.bind(function, context, [*arguments])</code>
+        <b class="method_name">bind</b><code>_.bind(function, context, [*arguments])</code>
         <br />
         Bind a <b>function</b> to a <b>context</b> object, meaning that whenever
         the function is called, the value of <i>this</i> will be the <b>context</b>.
@@ -457,7 +459,7 @@ func();
 </pre>
 
       <p id="bindAll">
-        <b>bindAll</b><code>_.bindAll(*methodNames, context)</code>
+        <b class="method_name">bindAll</b><code>_.bindAll(*methodNames, context)</code>
         <br />
         Binds a number of methods on the <b>context</b> object, specified by 
         <b>methodNames</b>, to be run in the context of that object whenever they
@@ -477,7 +479,7 @@ jQuery('#underscore_button').bind('click', buttonView.onClick);
 </pre>
 
       <p id="delay">
-        <b>delay</b><code>_.delay(function, wait, [*arguments])</code>
+        <b class="method_name">delay</b><code>_.delay(function, wait, [*arguments])</code>
         <br />
         Much like <b>setTimeout</b>, invokes <b>function</b> after <b>wait</b>
         milliseconds. If you pass the optional <b>arguments</b>, they will be
@@ -490,7 +492,7 @@ _.delay(log, 1000, 'logged later');
 </pre>
 
       <p id="defer">
-        <b>defer</b><code>_.defer(function)</code>
+        <b class="method_name">defer</b><code>_.defer(function)</code>
         <br />
         Defers invoking the <b>function</b> until the current call stack has cleared,
         similar to using <b>setTimeout</b> with a delay of 0. Useful for performing
@@ -503,7 +505,7 @@ _.defer(function(){ alert('deferred'); });
 </pre>
 
       <p id="wrap">
-        <b>wrap</b><code>_.wrap(function, wrapper)</code>
+        <b class="method_name">wrap</b><code>_.wrap(function, wrapper)</code>
         <br />
         Wraps the first <b>function</b> inside of the <b>wrapper</b> function, 
         passing it as the first argument. This allows the <b>wrapper</b> to 
@@ -522,7 +524,7 @@ hello();
       <h2>Object Functions</h2>
 
       <p id="keys">
-        <b>keys</b><code>_.keys(object)</code>
+        <b class="method_name">keys</b><code>_.keys(object)</code>
         <br />
         Retrieve all the names of the <b>object</b>'s properties.
       </p>
@@ -532,7 +534,7 @@ _.keys({one : 1, two : 2, three : 3});
 </pre>
 
       <p id="values">
-        <b>values</b><code>_.values(object)</code>
+        <b class="method_name">values</b><code>_.values(object)</code>
         <br />
         Return all of the values of the <b>object</b>'s properties.
       </p>
@@ -542,7 +544,7 @@ _.values({one : 1, two : 2, three : 3});
 </pre>
 
       <p id="extend">
-        <b>extend</b><code>_.extend(destination, source)</code>
+        <b class="method_name">extend</b><code>_.extend(destination, source)</code>
         <br />
         Copy all of the properties in the <b>source</b> object over to the 
         <b>destination</b> object.
@@ -553,7 +555,7 @@ _.extend({name : 'moe'}, {age : 50});
 </pre>
 
       <p id="clone">
-        <b>clone</b><code>_.clone(object)</code>
+        <b class="method_name">clone</b><code>_.clone(object)</code>
         <br />
         Create a shallow-copied clone of the <b>object</b>. Any nested objects
         or arrays will be copied by reference, not duplicated.
@@ -564,7 +566,7 @@ _.clone({name : 'moe'});
 </pre>
 
       <p id="isEqual">
-        <b>isEqual</b><code>_.isEqual(object, other)</code>
+        <b class="method_name">isEqual</b><code>_.isEqual(object, other)</code>
         <br />
         Performs an optimized deep comparison between the two objects, to determine
         if they should be considered equal.
@@ -579,7 +581,7 @@ _.isEqual(moe, clone);
 </pre>
 
       <p id="isElement">
-        <b>isElement</b><code>_.isElement(object)</code>
+        <b class="method_name">isElement</b><code>_.isElement(object)</code>
         <br />
         Returns <i>true</i> if <b>object</b> is a DOM element.
       </p>
@@ -589,7 +591,7 @@ _.isElement(jQuery('body')[0]);
 </pre>
 
       <p id="isArray">
-        <b>isArray</b><code>_.isArray(object)</code>
+        <b class="method_name">isArray</b><code>_.isArray(object)</code>
         <br />
         Returns <i>true</i> if <b>object</b> is an Array.
       </p>
@@ -601,7 +603,7 @@ _.isArray([1,2,3]);
 </pre>
 
       <p id="isFunction">
-        <b>isFunction</b><code>_.isFunction(object)</code>
+        <b class="method_name">isFunction</b><code>_.isFunction(object)</code>
         <br />
         Returns <i>true</i> if <b>object</b> is a Function.
       </p>
@@ -611,7 +613,7 @@ _.isFunction(alert);
 </pre>
 
       <p id="isUndefined">
-        <b>isUndefined</b><code>_.isUndefined(variable)</code>
+        <b class="method_name">isUndefined</b><code>_.isUndefined(variable)</code>
         <br />
         Returns <i>true</i> if <b>variable</b> is <i>undefined</i>.
       </p>
@@ -623,7 +625,7 @@ _.isUndefined(window.missingVariable);
       <h2>Utility Functions</h2>
 
       <p id="uniqueId">
-        <b>uniqueId</b><code>_.uniqueId([prefix])</code>
+        <b class="method_name">uniqueId</b><code>_.uniqueId([prefix])</code>
         <br />
         Generate a globally-unique id for client-side models or DOM elements 
         that need one. If <b>prefix</b> is passed, the id will be appended to it.
@@ -634,15 +636,17 @@ _.uniqueId('contact_');
 </pre>
 
       <p id="template">
-        <b>template</b><code>_.template(templateString)</code>
+        <b class="method_name">template</b><code>_.template(templateString, [context])</code>
         <br />
         Compiles Javascript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
         data sources. Template functions can both interpolate variables, using<br />
         <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary Javascript code, with 
-        <i>&lt;% &hellip; %&gt;</i>. When you evaluate a template, pass in a
-        context object that has properties corresponding to the template's free
-        variables.
+        <i>&lt;% &hellip; %&gt;</i>. When you evaluate a template function, pass in a
+        <b>context</b> object that has properties corresponding to the template's free
+        variables. If you're writing a one-off, you can pass the <b>context</b>
+        object as the second parameter to <b>template</b> in order to render
+        immediately instead of returning a template function.
       </p>
       <pre>
 var compiled = _.template("hello: &lt;%= name %&gt;");
diff --git a/test/speed.js b/test/speed.js
index 63cde52bb..5258fb58f 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -27,8 +27,24 @@
     return _.uniq(numbers, true);
   });
   
+  JSLitmus.test('_.sortBy()', function() {
+    return _.sortBy(numbers, function(num){ return -num; });
+  });
+  
   JSLitmus.test('_.isEqual()', function() {
     return _.isEqual(numbers, randomized);
   });
+  
+  JSLitmus.test('_.keys()', function() {
+    return _.keys(objects);
+  });
+  
+  JSLitmus.test('_.values()', function() {
+    return _.values(objects);
+  });
+  
+  JSLitmus.test('_.intersect()', function() {
+    return _.intersect(numbers, randomized);
+  });
 
 })();
\ No newline at end of file
diff --git a/test/test.html b/test/test.html
index 67415345d..1e001b739 100644
--- a/test/test.html
+++ b/test/test.html
@@ -20,8 +20,14 @@
   <h2 id="qunit-userAgent"></h2>
   <ol id="qunit-tests"></ol>
   <br />
-  <h1 class="qunit-header">JSLitmus Speed Suite</h1>
-  <h2 class="qunit-userAgent">Each iteration runs on an array of 1000 elements.</h2>
+  <h1 class="qunit-header">Underscore Speed Suite</h1>
+  <h2 class="qunit-userAgent">
+    A representative sample of the functions are benchmarked here, to provide
+    a sense of how fast they might run in different browsers.
+    Each iteration runs on an array of 1000 elements.<br /><br />
+    For example, the 'intersect' test measures the number of times you can
+    find the intersection of two thousand-element arrays in one second.
+  </h2>
   <br />
 </body>
 </html>
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 9f2f403e8..d70ea072d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,12 +1,14 @@
 // Underscore.js
 // (c) 2009 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the terms of the MIT license.
+// Portions of Underscore are inspired by or borrowed from Prototype.js, 
+// Oliver Steele's Functional, And John Resig's Micro-Templating.
 // For all details and documentation:
-// http://fdjklsafjsdalk
+// http://documentcloud.github.com/underscore/
 window._ = {
   
   VERSION : '0.1.0',
-      
+    
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, _each, arrays, and raw objects.
   each : function(obj, iterator, context) {
@@ -243,9 +245,9 @@ window._ = {
   // passed-in arrays.
   intersect : function(array) {
     var rest = _.toArray(arguments).slice(1);
-    return _.select(_.uniq(array), function(item1) {
+    return _.select(_.uniq(array), function(item) {
       return _.all(rest, function(other) { 
-        return _.detect(other, function(item2){ return item1 === item2; });
+        return _.indexOf(other, item) >= 0;
       });
     });
   },

From 15bb8c6410bc16bd9df1c7b67d90c177dc1cf2b2 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 13:29:58 -0400
Subject: [PATCH 012/533] read me

---
 README | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/README b/README
index 037e284fe..51327ad24 100644
--- a/README
+++ b/README
@@ -1,10 +1,17 @@
-            __           
-           /\_\    ____  
-           \/\ \  /',__\ 
-         __ \ \ \/\__, `\
-        /\_\_\ \ \/\____/
- _______\/_/\ \_\ \/___/ 
-/\______\  \ \____/      
-\/______/   \/___/
+                   __                                                         
+                  /\ \                                                         __           
+ __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __       /\_\    ____  
+/\ \/\ \ /' _ `\  /'_` \  /'__`\/\`'__\/',__\  /'___\ / __`\/\`'__\/'__`\     \/\ \  /',__\ 
+\ \ \_\ \/\ \/\ \/\ \L\ \/\  __/\ \ \//\__, `\/\ \__//\ \L\ \ \ \//\  __/  __  \ \ \/\__, `\
+ \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\/\_\ _\ \ \/\____/
+  \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/\/_//\ \_\ \/___/ 
+                                                                              \ \____/      
+                                                                               \/___/
 
-See: documentcloud.github.com/underscore
\ No newline at end of file
+Underscore is a utility-belt library for Javascript that provides 
+a lot of the functional programming support that you would expect 
+in Prototype.js (or Ruby), but without extending any of the built-
+in Javascript objects. It's the tie to go along with jQuery's tux.
+
+For Docs, License, Tests, and pre-packed downloads, see:
+http://documentcloud.github.com/underscore/
\ No newline at end of file

From dc8d4e0b588c9ceb9826493d05205a4c75314489 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 13:30:49 -0400
Subject: [PATCH 013/533] removing the ells from the heart of the ascii art

---
 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README b/README
index 51327ad24..a36288fc1 100644
--- a/README
+++ b/README
@@ -2,7 +2,7 @@
                   /\ \                                                         __           
  __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __       /\_\    ____  
 /\ \/\ \ /' _ `\  /'_` \  /'__`\/\`'__\/',__\  /'___\ / __`\/\`'__\/'__`\     \/\ \  /',__\ 
-\ \ \_\ \/\ \/\ \/\ \L\ \/\  __/\ \ \//\__, `\/\ \__//\ \L\ \ \ \//\  __/  __  \ \ \/\__, `\
+\ \ \_\ \/\ \/\ \/\ \ \ \/\  __/\ \ \//\__, `\/\ \__//\ \ \ \ \ \//\  __/  __  \ \ \/\__, `\
  \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\/\_\ _\ \ \/\____/
   \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/\/_//\ \_\ \/___/ 
                                                                               \ \____/      

From 26a9175419294d50945c3469ea4b5705df69a48c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 13:50:02 -0400
Subject: [PATCH 014/533] almost 0.1

---
 README            |  4 ++--
 index.html        | 21 +++++++++++++++++++++
 underscore-min.js |  1 +
 3 files changed, 24 insertions(+), 2 deletions(-)
 create mode 100644 underscore-min.js

diff --git a/README b/README
index a36288fc1..1bf4faf29 100644
--- a/README
+++ b/README
@@ -1,7 +1,7 @@
                    __                                                         
                   /\ \                                                         __           
  __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __       /\_\    ____  
-/\ \/\ \ /' _ `\  /'_` \  /'__`\/\`'__\/',__\  /'___\ / __`\/\`'__\/'__`\     \/\ \  /',__\ 
+/\ \/\ \ /' _ `\  /'_  \  /'__`\/\  __\/ ,__\  / ___\ / __`\/\  __\/'__`\     \/\ \  /',__\ 
 \ \ \_\ \/\ \/\ \/\ \ \ \/\  __/\ \ \//\__, `\/\ \__//\ \ \ \ \ \//\  __/  __  \ \ \/\__, `\
  \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\/\_\ _\ \ \/\____/
   \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/\/_//\ \_\ \/___/ 
@@ -14,4 +14,4 @@ in Prototype.js (or Ruby), but without extending any of the built-
 in Javascript objects. It's the tie to go along with jQuery's tux.
 
 For Docs, License, Tests, and pre-packed downloads, see:
-http://documentcloud.github.com/underscore/
\ No newline at end of file
+http://documentcloud.github.com/underscore/
diff --git a/index.html b/index.html
index 9bec576ee..e6a4fe669 100644
--- a/index.html
+++ b/index.html
@@ -36,6 +36,12 @@
     b.method_name {
       font-size: 18px;
     }
+    table, tr, td {
+      margin: 0; padding: 0;
+    }
+      td {
+        padding: 2px 12px 2px 0;
+      }
     code, pre, tt {
       font-family: Monaco, Consolas, "Lucida Console", monospace;
       font-size: 12px;
@@ -86,6 +92,21 @@
       for your perusal.
     </p>
     
+    <h2>Downloads</h2>
+    
+    <p>
+      <table>
+        <tr>
+          <td><a href="underscore.js">Development Version</a></td>
+          <td><i>(16kb, Uncompressed Code)</i></td>
+        </tr>
+        <tr>
+          <td><a href="underscore-min.js">Production Version</a></td>
+          <td><i>(4kb, Packed and Gzipped)</i></td>
+        </tr>
+      </table>
+    </p>
+    
     <h2>Table of Contents</h2>
     
     <p>
diff --git a/underscore-min.js b/underscore-min.js
new file mode 100644
index 000000000..56b63e7bf
--- /dev/null
+++ b/underscore-min.js
@@ -0,0 +1 @@
+window._={VERSION:"0.1.0",each:function(c,f,a){var g=0;try{if(c.forEach){c.forEach(f,a)}else{if(c.length){for(var d=0;d<c.length;d++){f.call(a,c[d],d)}}else{if(c.each){c.each(function(e){f.call(a,e,g++)})}else{var d=0;for(var k in c){var j=c[k],b=[k,j];b.key=k;b.value=j;f.call(a,b,d++)}}}}}catch(h){if(h!="__break__"){throw h}}return c},map:function(d,c,b){if(d&&d.map){return d.map(c,b)}var a=[];_.each(d,function(f,e){a.push(c.call(b,f,e))});return a},inject:function(d,a,c,b){_.each(d,function(f,e){a=c.call(b,a,f,e)});return a},detect:function(d,c,b){var a;_.each(d,function(f,e){if(c.call(b,f,e)){a=f;throw"__break__"}});return a},select:function(d,c,b){if(d.filter){return d.filter(c,b)}var a=[];_.each(d,function(f,e){if(c.call(b,f,e)){a.push(f)}});return a},reject:function(d,c,b){var a=[];_.each(d,function(f,e){if(!c.call(b,f,e)){a.push(f)}});return a},all:function(d,c,b){c=c||function(e){return e};if(d.every){return d.every(c,b)}var a=true;_.each(d,function(f,e){a=a&&!!c.call(b,f,e);if(!a){throw"__break__"}});return a},any:function(d,c,b){c=c||function(e){return e};if(d.some){return d.some(c,b)}var a=false;_.each(d,function(f,e){if(a=!!c.call(b,f,e)){throw"__break__"}});return a},include:function(c,b){if(_.isArray(c)){return _.indexOf(c,b)!=-1}var a=false;_.each(c,function(d){if(d.value==b){a=true;throw"__break__"}});return a},invoke:function(b,c){var a=_.toArray(arguments).slice(2);return _.map(b,function(d){return(c?d[c]:d).apply(d,a)})},pluck:function(c,b){var a=[];_.each(c,function(d){a.push(d[b])});return a},max:function(d,c,b){if(!c&&_.isArray(d)){return Math.max.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f>=a.computed){a={value:g,computed:f}}});return a.value},min:function(d,c,b){if(!c&&_.isArray(d)){return Math.min.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f<a.computed){a={value:g,computed:f}}});return a.value},sortBy:function(c,b,a){return _.pluck(_.map(c,function(e,d){return{value:e,criteria:b.call(a,e,d)}}).sort(function(g,f){var e=g.criteria,d=f.criteria;return e<d?-1:e>d?1:0}),"value")},sortedIndex:function(f,e,c){c=c||function(g){return g};var a=0,d=f.length;while(a<d){var b=(a+d)>>1;c(f[b])<c(e)?a=b+1:d=b}return a},toArray:function(a){if(!a){return[]}if(_.isArray(a)){return a}return _.map(a,function(b){return b})},size:function(a){return _.toArray(a).length},first:function(a){return a[0]},last:function(a){return a[a.length-1]},compact:function(a){return _.select(a,function(b){return !!b})},flatten:function(a){return _.inject(a,[],function(b,c){if(_.isArray(c)){return b.concat(_.flatten(c))}b.push(c);return b})},without:function(b){var a=b.slice.call(arguments,0);return _.select(b,function(c){return !_.include(a,c)})},uniq:function(b,a){return _.inject(b,[],function(c,e,d){if(0==d||(a?_.last(c)!=e:!_.include(c,e))){c.push(e)}return c})},intersect:function(b){var a=_.toArray(arguments).slice(1);return _.select(_.uniq(b),function(c){return _.all(a,function(d){return _.indexOf(d,c)>=0})})},zip:function(){var a=_.toArray(arguments);var d=_.max(_.pluck(a,"length"));var c=new Array(d);for(var b=0;b<d;b++){c[b]=_.pluck(a,String(b))}return c},indexOf:function(c,b){if(c.indexOf){return c.indexOf(b)}var a=c.length;for(i=0;i<a;i++){if(c[i]===b){return i}}return -1},bind:function(c,b){if(!b){return c}var a=_.toArray(arguments).slice(2);return function(){var d=a.concat(_.toArray(arguments));return c.apply(b,d)}},bindAll:function(){var a=_.toArray(arguments);var b=a.pop();_.each(a,function(c){b[c]=_.bind(b[c],b)})},delay:function(b,c){var a=_.toArray(arguments).slice(2);return window.setTimeout(function(){return b.apply(b,a)},c)},defer:function(a){return _.delay.apply(_,[a,1].concat(_.toArray(arguments).slice(1)))},wrap:function(a,b){return function(){var c=[a].concat(_.toArray(arguments));return b.apply(b,c)}},keys:function(a){return _.pluck(a,"key")},values:function(a){return _.pluck(a,"value")},extend:function(a,c){for(var b in c){a[b]=c[b]}return a},clone:function(a){return _.extend({},a)},isEqual:function(d,c){if(d===c){return true}var g=typeof(d),j=typeof(c);if(g!=j){return false}if(d==c){return true}if(d.isEqual){return d.isEqual(c)}if(g!=="object"){return false}var e=_.keys(d),h=_.keys(c);if(e.length!=h.length){return false}for(var f in d){if(!_.isEqual(d[f],c[f])){return false}}return true},isElement:function(a){return !!(a&&a.nodeType==1)},isArray:function(a){return Object.prototype.toString.call(a)=="[object Array]"},isFunction:function(a){return typeof a=="function"},isUndefined:function(a){return typeof a=="undefined"},uniqueId:function(a){var b=this._idCounter=(this._idCounter||0)+1;return a?a+b:b},template:function(c,b){var a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+c.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?a(b):a}};
\ No newline at end of file

From 90e34e1a74490863c34a8b68183d0ed700b1e316 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 14:45:05 -0400
Subject: [PATCH 015/533] comment edits

---
 index.html    | 18 +++++++++++-------
 underscore.js |  8 ++++----
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/index.html b/index.html
index e6a4fe669..633721834 100644
--- a/index.html
+++ b/index.html
@@ -160,7 +160,7 @@
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
         passed. If <b>list</b> is a Javascript object, a pair with <b>key</b>
         and <b>value</b> properties will be yielded. If the list has an <b>each</b> 
-        method of its own defined, it will be used. Delegates to the native 
+        method of its own, it will be used instead. Delegates to the native 
         <b>forEach</b> function if it exists.
       </p>
       <pre>
@@ -196,8 +196,8 @@ var sum = _.inject([1, 2, 3], 0, function(memo, num){ return memo + num });
         <br />
         Looks through each value in the <b>list</b>, returning the first one that 
         passes a truth test (<b>iterator</b>). The function returns as 
-        soon as it finds the true element, and doesn't continue to traverse 
-        the list.
+        soon as it finds the first acceptable element, and doesn't continue to 
+        traverse the list.
       </p>
       <pre>
 var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
@@ -257,7 +257,7 @@ _.any([null, 0, 'yes', false]);
         <b class="method_name">include</b><code>_.include(list, value)</code>
         <br />
         Returns <i>true</i> if the <b>value</b> is present in the <b>list</b>, using
-        <i>==</i> to test equality. Uses <b>indexOf</b> internally, if <b>list</b>
+        <i>===</i> to test equality. Uses <b>indexOf</b> internally, if <b>list</b>
         is an Array.
       </p>
       <pre>
@@ -408,7 +408,7 @@ _.flatten([1, [2], [3, [[[4]]]]]);
         <b class="method_name">without</b><code>_.without(array, [*values])</code>
         <br />
         Returns a copy of the <b>array</b> with all instances of the <b>values</b>
-        removed. <i>==</i> is used for the equality test.
+        removed. <i>===</i> is used for the equality test.
       </p>
       <pre>
 _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
@@ -418,7 +418,7 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
       <p id="uniq">
         <b class="method_name">uniq</b><code>_.uniq(array, [isSorted])</code>
         <br />
-        Produces a duplicate-free version of the <b>array</b>, using <i>==</i> to test
+        Produces a duplicate-free version of the <b>array</b>, using <i>===</i> to test
         object equality. If you know in advance that the <b>array</b> is sorted,
         passing <i>true</i> for <b>isSorted</b> will run a much faster algorithm.
       </p>
@@ -677,7 +677,11 @@ compiled({name : 'moe'});
 var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&gt;&lt;/li&gt; &lt;% }); %&gt;";
 _.template(list, {people : ['moe', 'curly', 'larry']});
 =&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
-</pre>  
+</pre> 
+
+      <p>
+        <i><b>Underscore</b> is a <a href="http://documentcloud.org/">DocumentCloud</a> production.</i>
+      </p>
       
     </div>
     
diff --git a/underscore.js b/underscore.js
index d70ea072d..22f5b2286 100644
--- a/underscore.js
+++ b/underscore.js
@@ -10,7 +10,7 @@ window._ = {
   VERSION : '0.1.0',
     
   // The cornerstone, an each implementation.
-  // Handles objects implementing forEach, _each, arrays, and raw objects.
+  // Handles objects implementing forEach, each, arrays, and raw objects.
   each : function(obj, iterator, context) {
     var index = 0;
     try {
@@ -47,7 +47,7 @@ window._ = {
   },
   
   // Inject builds up a single result from a list of values. Also known as
-  // reduce, and foldl.
+  // reduce, or foldl.
   inject : function(obj, memo, iterator, context) {
     _.each(obj, function(value, index) {
       memo = iterator.call(context, memo, value, index);
@@ -113,12 +113,12 @@ window._ = {
   },
   
   // Determine if a given value is included in the array or object, 
-  // based on '=='.
+  // based on '==='.
   include : function(obj, target) {
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
     _.each(obj, function(pair) {
-      if (pair.value == target) {
+      if (pair.value === target) {
         found = true;
         throw '__break__';
       }

From 5ef845a663e7016dc949032aa918602ad2cd52d4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 15:01:34 -0400
Subject: [PATCH 016/533] changing include to use === instead of ==

---
 underscore-min.js |  2 +-
 underscore.js     | 10 ++++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 56b63e7bf..6aae0d7e7 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-window._={VERSION:"0.1.0",each:function(c,f,a){var g=0;try{if(c.forEach){c.forEach(f,a)}else{if(c.length){for(var d=0;d<c.length;d++){f.call(a,c[d],d)}}else{if(c.each){c.each(function(e){f.call(a,e,g++)})}else{var d=0;for(var k in c){var j=c[k],b=[k,j];b.key=k;b.value=j;f.call(a,b,d++)}}}}}catch(h){if(h!="__break__"){throw h}}return c},map:function(d,c,b){if(d&&d.map){return d.map(c,b)}var a=[];_.each(d,function(f,e){a.push(c.call(b,f,e))});return a},inject:function(d,a,c,b){_.each(d,function(f,e){a=c.call(b,a,f,e)});return a},detect:function(d,c,b){var a;_.each(d,function(f,e){if(c.call(b,f,e)){a=f;throw"__break__"}});return a},select:function(d,c,b){if(d.filter){return d.filter(c,b)}var a=[];_.each(d,function(f,e){if(c.call(b,f,e)){a.push(f)}});return a},reject:function(d,c,b){var a=[];_.each(d,function(f,e){if(!c.call(b,f,e)){a.push(f)}});return a},all:function(d,c,b){c=c||function(e){return e};if(d.every){return d.every(c,b)}var a=true;_.each(d,function(f,e){a=a&&!!c.call(b,f,e);if(!a){throw"__break__"}});return a},any:function(d,c,b){c=c||function(e){return e};if(d.some){return d.some(c,b)}var a=false;_.each(d,function(f,e){if(a=!!c.call(b,f,e)){throw"__break__"}});return a},include:function(c,b){if(_.isArray(c)){return _.indexOf(c,b)!=-1}var a=false;_.each(c,function(d){if(d.value==b){a=true;throw"__break__"}});return a},invoke:function(b,c){var a=_.toArray(arguments).slice(2);return _.map(b,function(d){return(c?d[c]:d).apply(d,a)})},pluck:function(c,b){var a=[];_.each(c,function(d){a.push(d[b])});return a},max:function(d,c,b){if(!c&&_.isArray(d)){return Math.max.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f>=a.computed){a={value:g,computed:f}}});return a.value},min:function(d,c,b){if(!c&&_.isArray(d)){return Math.min.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f<a.computed){a={value:g,computed:f}}});return a.value},sortBy:function(c,b,a){return _.pluck(_.map(c,function(e,d){return{value:e,criteria:b.call(a,e,d)}}).sort(function(g,f){var e=g.criteria,d=f.criteria;return e<d?-1:e>d?1:0}),"value")},sortedIndex:function(f,e,c){c=c||function(g){return g};var a=0,d=f.length;while(a<d){var b=(a+d)>>1;c(f[b])<c(e)?a=b+1:d=b}return a},toArray:function(a){if(!a){return[]}if(_.isArray(a)){return a}return _.map(a,function(b){return b})},size:function(a){return _.toArray(a).length},first:function(a){return a[0]},last:function(a){return a[a.length-1]},compact:function(a){return _.select(a,function(b){return !!b})},flatten:function(a){return _.inject(a,[],function(b,c){if(_.isArray(c)){return b.concat(_.flatten(c))}b.push(c);return b})},without:function(b){var a=b.slice.call(arguments,0);return _.select(b,function(c){return !_.include(a,c)})},uniq:function(b,a){return _.inject(b,[],function(c,e,d){if(0==d||(a?_.last(c)!=e:!_.include(c,e))){c.push(e)}return c})},intersect:function(b){var a=_.toArray(arguments).slice(1);return _.select(_.uniq(b),function(c){return _.all(a,function(d){return _.indexOf(d,c)>=0})})},zip:function(){var a=_.toArray(arguments);var d=_.max(_.pluck(a,"length"));var c=new Array(d);for(var b=0;b<d;b++){c[b]=_.pluck(a,String(b))}return c},indexOf:function(c,b){if(c.indexOf){return c.indexOf(b)}var a=c.length;for(i=0;i<a;i++){if(c[i]===b){return i}}return -1},bind:function(c,b){if(!b){return c}var a=_.toArray(arguments).slice(2);return function(){var d=a.concat(_.toArray(arguments));return c.apply(b,d)}},bindAll:function(){var a=_.toArray(arguments);var b=a.pop();_.each(a,function(c){b[c]=_.bind(b[c],b)})},delay:function(b,c){var a=_.toArray(arguments).slice(2);return window.setTimeout(function(){return b.apply(b,a)},c)},defer:function(a){return _.delay.apply(_,[a,1].concat(_.toArray(arguments).slice(1)))},wrap:function(a,b){return function(){var c=[a].concat(_.toArray(arguments));return b.apply(b,c)}},keys:function(a){return _.pluck(a,"key")},values:function(a){return _.pluck(a,"value")},extend:function(a,c){for(var b in c){a[b]=c[b]}return a},clone:function(a){return _.extend({},a)},isEqual:function(d,c){if(d===c){return true}var g=typeof(d),j=typeof(c);if(g!=j){return false}if(d==c){return true}if(d.isEqual){return d.isEqual(c)}if(g!=="object"){return false}var e=_.keys(d),h=_.keys(c);if(e.length!=h.length){return false}for(var f in d){if(!_.isEqual(d[f],c[f])){return false}}return true},isElement:function(a){return !!(a&&a.nodeType==1)},isArray:function(a){return Object.prototype.toString.call(a)=="[object Array]"},isFunction:function(a){return typeof a=="function"},isUndefined:function(a){return typeof a=="undefined"},uniqueId:function(a){var b=this._idCounter=(this._idCounter||0)+1;return a?a+b:b},template:function(c,b){var a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+c.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?a(b):a}};
\ No newline at end of file
+window._={VERSION:"0.1.0",each:function(c,f,a){var g=0;try{if(c.forEach){c.forEach(f,a)}else{if(c.length){for(var d=0;d<c.length;d++){f.call(a,c[d],d)}}else{if(c.each){c.each(function(e){f.call(a,e,g++)})}else{var d=0;for(var k in c){var j=c[k],b=[k,j];b.key=k;b.value=j;f.call(a,b,d++)}}}}}catch(h){if(h!="__break__"){throw h}}return c},map:function(d,c,b){if(d&&d.map){return d.map(c,b)}var a=[];_.each(d,function(f,e){a.push(c.call(b,f,e))});return a},inject:function(d,a,c,b){_.each(d,function(f,e){a=c.call(b,a,f,e)});return a},detect:function(d,c,b){var a;_.each(d,function(f,e){if(c.call(b,f,e)){a=f;throw"__break__"}});return a},select:function(d,c,b){if(d.filter){return d.filter(c,b)}var a=[];_.each(d,function(f,e){if(c.call(b,f,e)){a.push(f)}});return a},reject:function(d,c,b){var a=[];_.each(d,function(f,e){if(!c.call(b,f,e)){a.push(f)}});return a},all:function(d,c,b){c=c||function(e){return e};if(d.every){return d.every(c,b)}var a=true;_.each(d,function(f,e){a=a&&!!c.call(b,f,e);if(!a){throw"__break__"}});return a},any:function(d,c,b){c=c||function(e){return e};if(d.some){return d.some(c,b)}var a=false;_.each(d,function(f,e){if(a=!!c.call(b,f,e)){throw"__break__"}});return a},include:function(c,b){if(_.isArray(c)){return _.indexOf(c,b)!=-1}var a=false;_.each(c,function(d){if(d.value===b){a=true;throw"__break__"}});return a},invoke:function(b,c){var a=_.toArray(arguments).slice(2);return _.map(b,function(d){return(c?d[c]:d).apply(d,a)})},pluck:function(c,b){var a=[];_.each(c,function(d){a.push(d[b])});return a},max:function(d,c,b){if(!c&&_.isArray(d)){return Math.max.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f>=a.computed){a={value:g,computed:f}}});return a.value},min:function(d,c,b){if(!c&&_.isArray(d)){return Math.min.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f<a.computed){a={value:g,computed:f}}});return a.value},sortBy:function(c,b,a){return _.pluck(_.map(c,function(e,d){return{value:e,criteria:b.call(a,e,d)}}).sort(function(g,f){var e=g.criteria,d=f.criteria;return e<d?-1:e>d?1:0}),"value")},sortedIndex:function(f,e,c){c=c||function(g){return g};var a=0,d=f.length;while(a<d){var b=(a+d)>>1;c(f[b])<c(e)?a=b+1:d=b}return a},toArray:function(a){if(!a){return[]}if(_.isArray(a)){return a}return _.map(a,function(b){return b})},size:function(a){return _.toArray(a).length},first:function(a){return a[0]},last:function(a){return a[a.length-1]},compact:function(a){return _.select(a,function(b){return !!b})},flatten:function(a){return _.inject(a,[],function(b,c){if(_.isArray(c)){return b.concat(_.flatten(c))}b.push(c);return b})},without:function(b){var a=b.slice.call(arguments,0);return _.select(b,function(c){return !_.include(a,c)})},uniq:function(b,a){return _.inject(b,[],function(c,e,d){if(0==d||(a?_.last(c)!=e:!_.include(c,e))){c.push(e)}return c})},intersect:function(b){var a=_.toArray(arguments).slice(1);return _.select(_.uniq(b),function(c){return _.all(a,function(d){return _.indexOf(d,c)>=0})})},zip:function(){var a=_.toArray(arguments);var d=_.max(_.pluck(a,"length"));var c=new Array(d);for(var b=0;b<d;b++){c[b]=_.pluck(a,String(b))}return c},indexOf:function(c,b){if(c.indexOf){return c.indexOf(b)}var a=c.length;for(i=0;i<a;i++){if(c[i]===b){return i}}return -1},bind:function(c,b){if(!b){return c}var a=_.toArray(arguments).slice(2);return function(){var d=a.concat(_.toArray(arguments));return c.apply(b,d)}},bindAll:function(){var a=_.toArray(arguments);var b=a.pop();_.each(a,function(c){b[c]=_.bind(b[c],b)})},delay:function(b,c){var a=_.toArray(arguments).slice(2);return window.setTimeout(function(){return b.apply(b,a)},c)},defer:function(a){return _.delay.apply(_,[a,1].concat(_.toArray(arguments).slice(1)))},wrap:function(a,b){return function(){var c=[a].concat(_.toArray(arguments));return b.apply(b,c)}},keys:function(a){return _.pluck(a,"key")},values:function(a){return _.pluck(a,"value")},extend:function(a,c){for(var b in c){a[b]=c[b]}return a},clone:function(a){return _.extend({},a)},isEqual:function(d,c){if(d===c){return true}var g=typeof(d),j=typeof(c);if(g!=j){return false}if(d==c){return true}if(d.isEqual){return d.isEqual(c)}if(g!=="object"){return false}var e=_.keys(d),h=_.keys(c);if(e.length!=h.length){return false}for(var f in d){if(!_.isEqual(d[f],c[f])){return false}}return true},isElement:function(a){return !!(a&&a.nodeType==1)},isArray:function(a){return Object.prototype.toString.call(a)=="[object Array]"},isFunction:function(a){return typeof a=="function"},isUndefined:function(a){return typeof a=="undefined"},uniqueId:function(a){var b=this._idCounter=(this._idCounter||0)+1;return a?a+b:b},template:function(c,b){var a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+c.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?a(b):a}};
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 22f5b2286..abec6fd9e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -8,6 +8,8 @@
 window._ = {
   
   VERSION : '0.1.0',
+  
+  /*------------------------ Collection Functions: ---------------------------*/
     
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, each, arrays, and raw objects.
@@ -200,7 +202,7 @@ window._ = {
     return _.toArray(obj).length;
   },
   
-  //------------- The following methods only apply to arrays. -----------------
+  /*-------------------------- Array Functions: ------------------------------*/
   
   // Get the first element of an array.
   first : function(array) {
@@ -272,7 +274,7 @@ window._ = {
     return -1;
   },
   
-  /* -------------- The following methods apply to functions -----------------*/
+  /* ----------------------- Function Functions: -----------------------------*/
   
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
@@ -318,7 +320,7 @@ window._ = {
     };
   },
   
-  /* ---------------- The following methods apply to objects ---------------- */
+  /* ------------------------- Object Functions: ---------------------------- */
   
   // Retrieve the names of an object's properties.
   keys : function(obj) {
@@ -383,7 +385,7 @@ window._ = {
     return typeof obj == 'undefined';
   },
   
-  /* -------------- The following methods are utility methods --------------- */
+  /* -------------------------- Utility Functions: -------------------------- */
   
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.

From 6cff16308ddca3807a36ad6dab0281b6341e03d9 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 27 Oct 2009 15:28:36 -0400
Subject: [PATCH 017/533] that's 42 functions, not 43

---
 index.html | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 633721834..8febc3d60 100644
--- a/index.html
+++ b/index.html
@@ -76,7 +76,7 @@
     </p>
     
     <p>
-      Underscore provides 43-odd functions that support both the usual 
+      Underscore provides 42-odd functions that support both the usual 
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash; 
       as well as more specialized helpers: function binding, javascript 
       templating, deep equality testing, and so on. It delegates to built-in 
@@ -92,17 +92,17 @@
       for your perusal.
     </p>
     
-    <h2>Downloads</h2>
+    <h2>Downloads <i style="padding-left: 12px; font-size:12px;">(Right-click, and use "Save As")</i></h2>
     
     <p>
       <table>
         <tr>
           <td><a href="underscore.js">Development Version</a></td>
-          <td><i>(16kb, Uncompressed Code)</i></td>
+          <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
           <td><a href="underscore-min.js">Production Version</a></td>
-          <td><i>(4kb, Packed and Gzipped)</i></td>
+          <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
     </p>

From f4299d7427abc59bca5b9c69904f25d0bf0f6791 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 08:58:00 -0400
Subject: [PATCH 018/533] adding a documentcloud project pic to the bottom of
 underscore

---
 index.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 8febc3d60..118e3a2ce 100644
--- a/index.html
+++ b/index.html
@@ -680,7 +680,9 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 </pre> 
 
       <p>
-        <i><b>Underscore</b> is a <a href="http://documentcloud.org/">DocumentCloud</a> production.</i>
+        <a href="http://documentcloud.org/" title="A DocumentCloud Project" style="background:none;">
+          <img src="http://jashkenas.s3.amazonaws.com/images/a_documentcloud_project.png" alt="A DocumentCloud Project" />
+        </a>
       </p>
       
     </div>

From 195a0f0908e5860105fa63d7539c8b17c21f9a49 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 09:22:50 -0400
Subject: [PATCH 019/533] adding github link

---
 index.html | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/index.html b/index.html
index 118e3a2ce..9d3ee6e18 100644
--- a/index.html
+++ b/index.html
@@ -92,6 +92,11 @@
       for your perusal.
     </p>
     
+    <p>
+      The unabridged source code is 
+      <a href="http://github.com/documentcloud/underscore/">available on GitHub</a>.
+    </p>
+    
     <h2>Downloads <i style="padding-left: 12px; font-size:12px;">(Right-click, and use "Save As")</i></h2>
     
     <p>

From 6d52832a73dcedffd8838ebe0d12fc1d4841588b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 12:37:55 -0400
Subject: [PATCH 020/533] going to version 0.1.1 with noConflict

---
 index.html        | 16 +++++++++++++---
 test/utility.js   |  6 ++++++
 underscore-min.js |  2 +-
 underscore.js     | 15 +++++++++++++--
 4 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/index.html b/index.html
index 9d3ee6e18..db3ee81b0 100644
--- a/index.html
+++ b/index.html
@@ -102,11 +102,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version</a></td>
+          <td><a href="underscore.js">Development Version (0.1.1)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version</a></td>
+          <td><a href="underscore-min.js">Production Version (0.1.1)</a></td>
           <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -151,7 +151,8 @@
     <p>
       <b>Utility</b>
       <br />
-      <span class="methods"><a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
+      <span class="methods"><a href="#noConflict">noConflict</a>,
+      <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
     </p>
     
     <div id="documentation">
@@ -649,6 +650,15 @@ _.isUndefined(window.missingVariable);
 </pre>
 
       <h2>Utility Functions</h2>
+      
+      <p id="noConflict">
+        <b class="method_name">noConflict</b><code>_.noConflict()</code>
+        <br />
+        Give control of the "_" variable back to its previous owner. Returns
+        a reference to the <b>Underscore</b> object.
+      </p>
+      <pre>
+var underscore = _.noConflict();</pre>
 
       <p id="uniqueId">
         <b class="method_name">uniqueId</b><code>_.uniqueId([prefix])</code>
diff --git a/test/utility.js b/test/utility.js
index cfaaaace3..9a8eb516f 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -1,6 +1,12 @@
 $(document).ready(function() {
   
   module("Utility functions (uniqueId, template)");
+  
+  test("utility: noConflict", function() {
+    var underscore = _.noConflict();
+    ok(underscore.isUndefined(_), "The '_' variable has been returned to its previous state.");
+    window._ = underscore;
+  });
     
   test("utility: uniqueId", function() {
     var ids = [], i = 0;
diff --git a/underscore-min.js b/underscore-min.js
index 6aae0d7e7..096ff0aac 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-window._={VERSION:"0.1.0",each:function(c,f,a){var g=0;try{if(c.forEach){c.forEach(f,a)}else{if(c.length){for(var d=0;d<c.length;d++){f.call(a,c[d],d)}}else{if(c.each){c.each(function(e){f.call(a,e,g++)})}else{var d=0;for(var k in c){var j=c[k],b=[k,j];b.key=k;b.value=j;f.call(a,b,d++)}}}}}catch(h){if(h!="__break__"){throw h}}return c},map:function(d,c,b){if(d&&d.map){return d.map(c,b)}var a=[];_.each(d,function(f,e){a.push(c.call(b,f,e))});return a},inject:function(d,a,c,b){_.each(d,function(f,e){a=c.call(b,a,f,e)});return a},detect:function(d,c,b){var a;_.each(d,function(f,e){if(c.call(b,f,e)){a=f;throw"__break__"}});return a},select:function(d,c,b){if(d.filter){return d.filter(c,b)}var a=[];_.each(d,function(f,e){if(c.call(b,f,e)){a.push(f)}});return a},reject:function(d,c,b){var a=[];_.each(d,function(f,e){if(!c.call(b,f,e)){a.push(f)}});return a},all:function(d,c,b){c=c||function(e){return e};if(d.every){return d.every(c,b)}var a=true;_.each(d,function(f,e){a=a&&!!c.call(b,f,e);if(!a){throw"__break__"}});return a},any:function(d,c,b){c=c||function(e){return e};if(d.some){return d.some(c,b)}var a=false;_.each(d,function(f,e){if(a=!!c.call(b,f,e)){throw"__break__"}});return a},include:function(c,b){if(_.isArray(c)){return _.indexOf(c,b)!=-1}var a=false;_.each(c,function(d){if(d.value===b){a=true;throw"__break__"}});return a},invoke:function(b,c){var a=_.toArray(arguments).slice(2);return _.map(b,function(d){return(c?d[c]:d).apply(d,a)})},pluck:function(c,b){var a=[];_.each(c,function(d){a.push(d[b])});return a},max:function(d,c,b){if(!c&&_.isArray(d)){return Math.max.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f>=a.computed){a={value:g,computed:f}}});return a.value},min:function(d,c,b){if(!c&&_.isArray(d)){return Math.min.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f<a.computed){a={value:g,computed:f}}});return a.value},sortBy:function(c,b,a){return _.pluck(_.map(c,function(e,d){return{value:e,criteria:b.call(a,e,d)}}).sort(function(g,f){var e=g.criteria,d=f.criteria;return e<d?-1:e>d?1:0}),"value")},sortedIndex:function(f,e,c){c=c||function(g){return g};var a=0,d=f.length;while(a<d){var b=(a+d)>>1;c(f[b])<c(e)?a=b+1:d=b}return a},toArray:function(a){if(!a){return[]}if(_.isArray(a)){return a}return _.map(a,function(b){return b})},size:function(a){return _.toArray(a).length},first:function(a){return a[0]},last:function(a){return a[a.length-1]},compact:function(a){return _.select(a,function(b){return !!b})},flatten:function(a){return _.inject(a,[],function(b,c){if(_.isArray(c)){return b.concat(_.flatten(c))}b.push(c);return b})},without:function(b){var a=b.slice.call(arguments,0);return _.select(b,function(c){return !_.include(a,c)})},uniq:function(b,a){return _.inject(b,[],function(c,e,d){if(0==d||(a?_.last(c)!=e:!_.include(c,e))){c.push(e)}return c})},intersect:function(b){var 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_.pluck(a,"key")},values:function(a){return _.pluck(a,"value")},extend:function(a,c){for(var b in c){a[b]=c[b]}return a},clone:function(a){return _.extend({},a)},isEqual:function(d,c){if(d===c){return true}var g=typeof(d),j=typeof(c);if(g!=j){return false}if(d==c){return true}if(d.isEqual){return d.isEqual(c)}if(g!=="object"){return false}var e=_.keys(d),h=_.keys(c);if(e.length!=h.length){return false}for(var f in d){if(!_.isEqual(d[f],c[f])){return false}}return true},isElement:function(a){return !!(a&&a.nodeType==1)},isArray:function(a){return Object.prototype.toString.call(a)=="[object Array]"},isFunction:function(a){return typeof a=="function"},isUndefined:function(a){return typeof a=="undefined"},uniqueId:function(a){var b=this._idCounter=(this._idCounter||0)+1;return a?a+b:b},template:function(c,b){var a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+c.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?a(b):a}};
\ No newline at end of file
+window.Underscore={VERSION:"0.1.1",PREVIOUS_UNDERSCORE:window._,each:function(c,f,a){var g=0;try{if(c.forEach){c.forEach(f,a)}else{if(c.length){for(var d=0;d<c.length;d++){f.call(a,c[d],d)}}else{if(c.each){c.each(function(e){f.call(a,e,g++)})}else{var d=0;for(var k in c){var j=c[k],b=[k,j];b.key=k;b.value=j;f.call(a,b,d++)}}}}}catch(h){if(h!="__break__"){throw h}}return c},map:function(d,c,b){if(d&&d.map){return d.map(c,b)}var a=[];_.each(d,function(f,e){a.push(c.call(b,f,e))});return a},inject:function(d,a,c,b){_.each(d,function(f,e){a=c.call(b,a,f,e)});return a},detect:function(d,c,b){var a;_.each(d,function(f,e){if(c.call(b,f,e)){a=f;throw"__break__"}});return a},select:function(d,c,b){if(d.filter){return d.filter(c,b)}var a=[];_.each(d,function(f,e){if(c.call(b,f,e)){a.push(f)}});return a},reject:function(d,c,b){var a=[];_.each(d,function(f,e){if(!c.call(b,f,e)){a.push(f)}});return a},all:function(d,c,b){c=c||function(e){return e};if(d.every){return d.every(c,b)}var a=true;_.each(d,function(f,e){a=a&&!!c.call(b,f,e);if(!a){throw"__break__"}});return a},any:function(d,c,b){c=c||function(e){return e};if(d.some){return d.some(c,b)}var a=false;_.each(d,function(f,e){if(a=!!c.call(b,f,e)){throw"__break__"}});return a},include:function(c,b){if(_.isArray(c)){return _.indexOf(c,b)!=-1}var a=false;_.each(c,function(d){if(d.value===b){a=true;throw"__break__"}});return a},invoke:function(b,c){var a=_.toArray(arguments).slice(2);return _.map(b,function(d){return(c?d[c]:d).apply(d,a)})},pluck:function(c,b){var a=[];_.each(c,function(d){a.push(d[b])});return a},max:function(d,c,b){if(!c&&_.isArray(d)){return Math.max.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f>=a.computed){a={value:g,computed:f}}});return a.value},min:function(d,c,b){if(!c&&_.isArray(d)){return Math.min.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f<a.computed){a={value:g,computed:f}}});return a.value},sortBy:function(c,b,a){return _.pluck(_.map(c,function(e,d){return{value:e,criteria:b.call(a,e,d)}}).sort(function(g,f){var e=g.criteria,d=f.criteria;return e<d?-1:e>d?1:0}),"value")},sortedIndex:function(f,e,c){c=c||function(g){return g};var a=0,d=f.length;while(a<d){var b=(a+d)>>1;c(f[b])<c(e)?a=b+1:d=b}return a},toArray:function(a){if(!a){return[]}if(_.isArray(a)){return a}return _.map(a,function(b){return b})},size:function(a){return _.toArray(a).length},first:function(a){return a[0]},last:function(a){return a[a.length-1]},compact:function(a){return _.select(a,function(b){return !!b})},flatten:function(a){return _.inject(a,[],function(b,c){if(_.isArray(c)){return b.concat(_.flatten(c))}b.push(c);return b})},without:function(b){var a=b.slice.call(arguments,0);return _.select(b,function(c){return !_.include(a,c)})},uniq:function(b,a){return _.inject(b,[],function(c,e,d){if(0==d||(a?_.last(c)!=e:!_.include(c,e))){c.push(e)}return c})},intersect:function(b){var a=_.toArray(arguments).slice(1);return _.select(_.uniq(b),function(c){return _.all(a,function(d){return _.indexOf(d,c)>=0})})},zip:function(){var a=_.toArray(arguments);var d=_.max(_.pluck(a,"length"));var c=new Array(d);for(var b=0;b<d;b++){c[b]=_.pluck(a,String(b))}return c},indexOf:function(c,b){if(c.indexOf){return c.indexOf(b)}var a=c.length;for(i=0;i<a;i++){if(c[i]===b){return i}}return -1},bind:function(c,b){if(!b){return c}var a=_.toArray(arguments).slice(2);return function(){var d=a.concat(_.toArray(arguments));return c.apply(b,d)}},bindAll:function(){var a=_.toArray(arguments);var b=a.pop();_.each(a,function(c){b[c]=_.bind(b[c],b)})},delay:function(b,c){var a=_.toArray(arguments).slice(2);return window.setTimeout(function(){return b.apply(b,a)},c)},defer:function(a){return _.delay.apply(_,[a,1].concat(_.toArray(arguments).slice(1)))},wrap:function(a,b){return function(){var c=[a].concat(_.toArray(arguments));return b.apply(b,c)}},keys:function(a){return _.pluck(a,"key")},values:function(a){return _.pluck(a,"value")},extend:function(a,c){for(var b in c){a[b]=c[b]}return a},clone:function(a){return _.extend({},a)},isEqual:function(d,c){if(d===c){return true}var g=typeof(d),j=typeof(c);if(g!=j){return false}if(d==c){return true}if(d.isEqual){return d.isEqual(c)}if(g!=="object"){return false}var e=_.keys(d),h=_.keys(c);if(e.length!=h.length){return false}for(var f in d){if(!_.isEqual(d[f],c[f])){return false}}return true},isElement:function(a){return !!(a&&a.nodeType==1)},isArray:function(a){return Object.prototype.toString.call(a)=="[object Array]"},isFunction:function(a){return typeof a=="function"},isUndefined:function(a){return typeof a=="undefined"},noConflict:function(){window._=Underscore.PREVIOUS_UNDERSCORE;return this},uniqueId:function(a){var b=this._idCounter=(this._idCounter||0)+1;return a?a+b:b},template:function(c,b){var a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+c.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?a(b):a}};window._=Underscore;
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index abec6fd9e..0091abd90 100644
--- a/underscore.js
+++ b/underscore.js
@@ -5,9 +5,11 @@
 // Oliver Steele's Functional, And John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore/
-window._ = {
+window.Underscore = {
   
-  VERSION : '0.1.0',
+  VERSION : '0.1.1',
+  
+  PREVIOUS_UNDERSCORE : window._,
   
   /*------------------------ Collection Functions: ---------------------------*/
     
@@ -387,6 +389,13 @@ window._ = {
   
   /* -------------------------- Utility Functions: -------------------------- */
   
+  // Run Underscore.js in noConflict mode, returning the '_' variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  noConflict : function() {
+    window._ = Underscore.PREVIOUS_UNDERSCORE;
+    return this;
+  },
+  
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
   uniqueId : function(prefix) {
@@ -413,3 +422,5 @@ window._ = {
   }
   
 };
+
+window._ = Underscore;

From 4a83fcdd260f61f253f3349740ee304074867aff Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 18:49:50 -0400
Subject: [PATCH 021/533] version 0.2.0 is out, with inject -> reduce, JS
 standard methodname aliases, a compose(), and a lastIndexOf()

---
 index.html          | 167 ++++++++++++++++++++-----------
 package.json        |  12 +++
 test/arrays.js      |   7 ++
 test/collections.js |  20 +++-
 test/functions.js   |  10 ++
 test/utility.js     |   2 +
 underscore-min.js   |   2 +-
 underscore.js       | 232 +++++++++++++++++++++++++-------------------
 8 files changed, 294 insertions(+), 158 deletions(-)
 create mode 100644 package.json

diff --git a/index.html b/index.html
index db3ee81b0..11f706290 100644
--- a/index.html
+++ b/index.html
@@ -33,9 +33,14 @@
     h1, h2, h3, h4, h5, h6 {
       margin-top: 40px;
     }
-    b.method_name {
+    b.header {
       font-size: 18px;
     }
+    span.alias {
+      font-size: 14px;
+      font-style: italic;
+      margin-left: 20px;
+    }
     table, tr, td {
       margin: 0; padding: 0;
     }
@@ -76,7 +81,7 @@
     </p>
     
     <p>
-      Underscore provides 42-odd functions that support both the usual 
+      Underscore provides 44-odd functions that support both the usual 
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash; 
       as well as more specialized helpers: function binding, javascript 
       templating, deep equality testing, and so on. It delegates to built-in 
@@ -102,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.1.1)</a></td>
+          <td><a href="underscore.js">Development Version (0.2.0)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.1.1)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.2.0)</a></td>
           <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -118,7 +123,7 @@
       <b>Collections</b>
       <br /> 
       <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>, 
-      <a href="#inject">inject</a>, <a href="#detect">detect</a>, <a href="#select">select</a>, <a href="#reject">reject</a>, <a href="#all">all</a>, 
+      <a href="#reduce">reduce</a>, <a href="#detect">detect</a>, <a href="#select">select</a>, <a href="#reject">reject</a>, <a href="#all">all</a>, 
       <a href="#any">any</a>, <a href="#include">include</a>, <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>, <a href="#max">max</a>, 
       <a href="#min">min</a>, <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>, <a href="#toArray">toArray</a>, 
       <a href="#size">size</a></span>
@@ -129,14 +134,15 @@
       <br />
       <span class="methods"><a href="#first">first</a>, <a href="#last">last</a>, 
       <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>, 
-      <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>
+      <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>,
+      <a href="#lastIndexOf">lastIndexOf</a></span>
     </p>
     
     <p>
       <b>Functions</b>
       <br />
       <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>, 
-      <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>
+      <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>, <a href="#compose">compose</a></span>
     </p>
     
     <p>
@@ -160,7 +166,8 @@
       <h2>Collection Functions (Arrays or Objects)</h2>
       
       <p id="each">
-        <b class="method_name">each</b><code>_.each(list, iterator, [context])</code>
+        <b class="header">each</b><code>_.each(list, iterator, [context])</code>
+        <span class="alias">Alias: <b>forEach</b></span>
         <br />
         Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
@@ -174,7 +181,7 @@ _.each([1, 2, 3], function(num){ alert(num); });
 =&gt; alerts each number in turn...</pre>
       
       <p id="map">
-        <b class="method_name">map</b><code>_.map(list, iterator, [context])</code>
+        <b class="header">map</b><code>_.map(list, iterator, [context])</code>
         <br />
         Produces a new array of values by mapping each value in <b>list</b> 
         through a transformation function (<b>iterator</b>). If the native 
@@ -184,21 +191,22 @@ _.each([1, 2, 3], function(num){ alert(num); });
 _.map([1, 2, 3], function(num){ return num * 3 });
 =&gt; [3, 6, 9]</pre>
 
-      <p id="inject">
-        <b class="method_name">inject</b><code>_.inject(list, memo, iterator, [context])</code>
+      <p id="reduce">
+        <b class="header">reduce</b><code>_.reduce(list, memo, iterator, [context])</code>
+        <span class="alias">Alias: <b>inject</b></span>
         <br />
-        Also known as <b>reduce</b> and <b>foldl</b>, <b>inject</b> reduces a 
+        Also known as <b>inject</b> and <b>foldl</b>, <b>reduce</b> boils down a 
         <b>list</b> of values into a single value. <b>Memo</b> is the initial state
         of the reduction, and each successive step of it should be returned by
         <b>iterator</b>.
       </p>
       <pre>
-var sum = _.inject([1, 2, 3], 0, function(memo, num){ return memo + num });
+var sum = _.reduce([1, 2, 3], 0, function(memo, num){ return memo + num });
 =&gt; 6
 </pre>
 
       <p id="detect">
-        <b class="method_name">detect</b><code>_.detect(list, iterator, [context])</code>
+        <b class="header">detect</b><code>_.detect(list, iterator, [context])</code>
         <br />
         Looks through each value in the <b>list</b>, returning the first one that 
         passes a truth test (<b>iterator</b>). The function returns as 
@@ -211,7 +219,8 @@ var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="select">
-        <b class="method_name">select</b><code>_.select(list, iterator, [context])</code>
+        <b class="header">select</b><code>_.select(list, iterator, [context])</code>
+        <span class="alias">Alias: <b>filter</b></span>
         <br />
         Looks through each value in the <b>list</b>, returning an array of all
         the values that pass a truth test (<b>iterator</b>). Delegates to the
@@ -223,7 +232,7 @@ var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="reject">
-        <b class="method_name">reject</b><code>_.reject(list, iterator, [context])</code>
+        <b class="header">reject</b><code>_.reject(list, iterator, [context])</code>
         <br />
         Returns the values in <b>list</b> without the elements that the truth
         test (<b>iterator</b>) passes. The opposite of <b>select</b>.
@@ -234,7 +243,8 @@ var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="all">
-        <b class="method_name">all</b><code>_.all(list, [iterator], [context])</code>
+        <b class="header">all</b><code>_.all(list, [iterator], [context])</code>
+        <span class="alias">Alias: <b>every</b></span>
         <br />
         Returns <i>true</i> if all of the values in the <b>list</b> pass the <b>iterator</b>
         truth test. If an <b>iterator</b> is not provided, the truthy value of 
@@ -247,7 +257,8 @@ _.all([true, 1, null, 'yes']);
 </pre>
 
       <p id="any">
-        <b class="method_name">any</b><code>_.any(list, [iterator], [context])</code>
+        <b class="header">any</b><code>_.any(list, [iterator], [context])</code>
+        <span class="alias">Alias: <b>some</b></span>
         <br />
         Returns <i>true</i> if any of the values in the <b>list</b> pass the
         <b>iterator</b> truth test. Short-circuits and stops traversing the list
@@ -260,7 +271,7 @@ _.any([null, 0, 'yes', false]);
 </pre>
 
       <p id="include">
-        <b class="method_name">include</b><code>_.include(list, value)</code>
+        <b class="header">include</b><code>_.include(list, value)</code>
         <br />
         Returns <i>true</i> if the <b>value</b> is present in the <b>list</b>, using
         <i>===</i> to test equality. Uses <b>indexOf</b> internally, if <b>list</b>
@@ -272,7 +283,7 @@ _.include([1, 2, 3], 3);
 </pre>
 
       <p id="invoke">
-        <b class="method_name">invoke</b><code>_.invoke(list, methodName, [*arguments])</code>
+        <b class="header">invoke</b><code>_.invoke(list, methodName, [*arguments])</code>
         <br />
         Calls the method named by <b>methodName</b> on each value in the <b>list</b>.
         Any extra arguments passed to <b>invoke</b> will be forwarded on to the
@@ -284,7 +295,7 @@ _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
 </pre>
 
       <p id="pluck">
-        <b class="method_name">pluck</b><code>_.pluck(list, propertyName)</code>
+        <b class="header">pluck</b><code>_.pluck(list, propertyName)</code>
         <br />
         An optimized version of what is perhaps the most common use-case for 
         <b>map</b>: returning a list of property values.
@@ -296,7 +307,7 @@ _.pluck(stooges, 'name');
 </pre>
 
       <p id="max">
-        <b class="method_name">max</b><code>_.max(list, [iterator], [context])</code>
+        <b class="header">max</b><code>_.max(list, [iterator], [context])</code>
         <br />
         Returns the maximum value in <b>list</b>. If <b>iterator</b> is passed,
         it will be used on each value to generate the criterion by which the
@@ -309,7 +320,7 @@ _.max(stooges, function(stooge){ return stooge.age; });
 </pre>
 
       <p id="min">
-        <b class="method_name">min</b><code>_.min(list, [iterator], [context])</code>
+        <b class="header">min</b><code>_.min(list, [iterator], [context])</code>
         <br />
         Returns the minimum value in <b>list</b>. If <b>iterator</b> is passed,
         it will be used on each value to generate the criterion by which the
@@ -322,7 +333,7 @@ _.min(numbers);
 </pre>
 
       <p id="sortBy">
-        <b class="method_name">sortBy</b><code>_.sortBy(list, iterator, [context])</code>
+        <b class="header">sortBy</b><code>_.sortBy(list, iterator, [context])</code>
         <br />
         Returns a sorted <b>list</b>, ranked by the results of running each
         value through <b>iterator</b>.
@@ -333,7 +344,7 @@ _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
 </pre>
 
       <p id="sortedIndex">
-        <b class="method_name">sortedIndex</b><code>_.sortedIndex(list, value, [iterator])</code>
+        <b class="header">sortedIndex</b><code>_.sortedIndex(list, value, [iterator])</code>
         <br />
         Uses a binary search to determine the index at which the <b>value</b>
         should be inserted into the <b>list</b> in order to maintain the <b>list</b>'s
@@ -346,7 +357,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 </pre>
 
       <p id="toArray">
-        <b class="method_name">toArray</b><code>_.toArray(list)</code>
+        <b class="header">toArray</b><code>_.toArray(list)</code>
         <br />
         Converts the <b>list</b> (anything that can be iterated over), into a
         real Array. Useful for transmuting the <b>arguments</b> object.
@@ -357,7 +368,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 </pre>
 
       <p id="size">
-        <b class="method_name">size</b><code>_.size(list)</code>
+        <b class="header">size</b><code>_.size(list)</code>
         <br />
         Return the number of values in the <b>list</b>.
       </p>
@@ -369,7 +380,7 @@ _.size({one : 1, two : 2, three : 3});
       <h2>Array Functions</h2>
       
       <p id="first">
-        <b class="method_name">first</b><code>_.first(array)</code>
+        <b class="header">first</b><code>_.first(array)</code>
         <br />
         Convenience to return the first element of an <b>array</b> (identical to <tt>array[0]</tt>).
       </p>
@@ -379,7 +390,7 @@ _.first([3, 2, 1]);
 </pre>
 
       <p id="last">
-        <b class="method_name">last</b><code>_.last(array)</code>
+        <b class="header">last</b><code>_.last(array)</code>
         <br />
         Returns the last element of an <b>array</b>.
       </p>
@@ -389,7 +400,7 @@ _.last([3, 2, 1]);
 </pre>
 
       <p id="compact">
-        <b class="method_name">compact</b><code>_.compact(array)</code>
+        <b class="header">compact</b><code>_.compact(array)</code>
         <br />
         Returns a copy of the <b>array</b> with all falsy values removed. 
         In Javascript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>, 
@@ -401,7 +412,7 @@ _.compact([0, 1, false, 2, '', 3]);
 </pre>
 
       <p id="flatten">
-        <b class="method_name">flatten</b><code>_.flatten(array)</code>
+        <b class="header">flatten</b><code>_.flatten(array)</code>
         <br />
         Flattens a nested <b>array</b> (the nesting can be to any depth).
       </p>
@@ -411,7 +422,7 @@ _.flatten([1, [2], [3, [[[4]]]]]);
 </pre>
 
       <p id="without">
-        <b class="method_name">without</b><code>_.without(array, [*values])</code>
+        <b class="header">without</b><code>_.without(array, [*values])</code>
         <br />
         Returns a copy of the <b>array</b> with all instances of the <b>values</b>
         removed. <i>===</i> is used for the equality test.
@@ -422,7 +433,7 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
 </pre>
 
       <p id="uniq">
-        <b class="method_name">uniq</b><code>_.uniq(array, [isSorted])</code>
+        <b class="header">uniq</b><code>_.uniq(array, [isSorted])</code>
         <br />
         Produces a duplicate-free version of the <b>array</b>, using <i>===</i> to test
         object equality. If you know in advance that the <b>array</b> is sorted,
@@ -434,7 +445,7 @@ _.uniq([1, 2, 1, 3, 1, 4]);
 </pre>
 
       <p id="intersect">
-        <b class="method_name">intersect</b><code>_.intersect(*arrays)</code>
+        <b class="header">intersect</b><code>_.intersect(*arrays)</code>
         <br />
         Computes the list of values that are the intersection of all the <b>arrays</b>.
         Each value in the result is present in each of the <b>arrays</b>.
@@ -445,7 +456,7 @@ _.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
 </pre>
 
       <p id="zip">
-        <b class="method_name">zip</b><code>_.zip(*arrays)</code>
+        <b class="header">zip</b><code>_.zip(*arrays)</code>
         <br />
         Merges together the values of each of the <b>arrays</b> with the
         values at the corresponding position. Useful when you have separate
@@ -457,7 +468,7 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
 </pre>
 
       <p id="indexOf">
-        <b class="method_name">indexOf</b><code>_.indexOf(array, value)</code>
+        <b class="header">indexOf</b><code>_.indexOf(array, value)</code>
         <br />
         Returns the index at which <b>value</b> can be found in the <b>array</b>, 
         or <i>-1</i> if value is not present in the <b>array</b>. Uses the native
@@ -466,12 +477,24 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
       <pre>
 _.indexOf([1, 2, 3], 2);
 =&gt; 1
+</pre>
+
+      <p id="lastIndexOf">
+        <b class="header">lastIndexOf</b><code>_.lastIndexOf(array, value)</code>
+        <br />
+        Returns the index of the last occurrence of <b>value</b> in the <b>array</b>, 
+        or <i>-1</i> if value is not present. Uses the native <b>lastIndexOf</b> 
+        function if possible.
+      </p>
+      <pre>
+_.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
+=&gt; 4
 </pre>
 
       <h2>Function (uh, ahem) Functions</h2>
 
       <p id="bind">
-        <b class="method_name">bind</b><code>_.bind(function, context, [*arguments])</code>
+        <b class="header">bind</b><code>_.bind(function, context, [*arguments])</code>
         <br />
         Bind a <b>function</b> to a <b>context</b> object, meaning that whenever
         the function is called, the value of <i>this</i> will be the <b>context</b>.
@@ -486,7 +509,7 @@ func();
 </pre>
 
       <p id="bindAll">
-        <b class="method_name">bindAll</b><code>_.bindAll(*methodNames, context)</code>
+        <b class="header">bindAll</b><code>_.bindAll(*methodNames, context)</code>
         <br />
         Binds a number of methods on the <b>context</b> object, specified by 
         <b>methodNames</b>, to be run in the context of that object whenever they
@@ -506,7 +529,7 @@ jQuery('#underscore_button').bind('click', buttonView.onClick);
 </pre>
 
       <p id="delay">
-        <b class="method_name">delay</b><code>_.delay(function, wait, [*arguments])</code>
+        <b class="header">delay</b><code>_.delay(function, wait, [*arguments])</code>
         <br />
         Much like <b>setTimeout</b>, invokes <b>function</b> after <b>wait</b>
         milliseconds. If you pass the optional <b>arguments</b>, they will be
@@ -519,7 +542,7 @@ _.delay(log, 1000, 'logged later');
 </pre>
 
       <p id="defer">
-        <b class="method_name">defer</b><code>_.defer(function)</code>
+        <b class="header">defer</b><code>_.defer(function)</code>
         <br />
         Defers invoking the <b>function</b> until the current call stack has cleared,
         similar to using <b>setTimeout</b> with a delay of 0. Useful for performing
@@ -532,7 +555,7 @@ _.defer(function(){ alert('deferred'); });
 </pre>
 
       <p id="wrap">
-        <b class="method_name">wrap</b><code>_.wrap(function, wrapper)</code>
+        <b class="header">wrap</b><code>_.wrap(function, wrapper)</code>
         <br />
         Wraps the first <b>function</b> inside of the <b>wrapper</b> function, 
         passing it as the first argument. This allows the <b>wrapper</b> to 
@@ -545,13 +568,29 @@ hello = _.wrap(hello, function(func) {
   return "before, " + func("moe") + ", after";
 });
 hello();
-=&gt; before, hello: moe, after
+=&gt; 'before, hello: moe, after'
+</pre>
+
+      <p id="compose">
+        <b class="header">compose</b><code>_.compose(*functions)</code>
+        <br />
+        Returns the composition of a list of <b>functions</b>, where each function 
+        consumes the return value of the function that follows. In math terms,
+        composing the functions <i>f()</i>, <i>g()</i>, and <i>h()</i> produces
+        <i>f(g(h()))</i>.
+      </p>
+      <pre>
+var greet    = function(name){ return "hi: " + name; };
+var exclaim  = function(statement){ return statement + "!"; };
+var welcome = _.compose(greet, exclaim);
+welcome('moe');
+=&gt; 'hi: moe!'
 </pre>
 
       <h2>Object Functions</h2>
 
       <p id="keys">
-        <b class="method_name">keys</b><code>_.keys(object)</code>
+        <b class="header">keys</b><code>_.keys(object)</code>
         <br />
         Retrieve all the names of the <b>object</b>'s properties.
       </p>
@@ -561,7 +600,7 @@ _.keys({one : 1, two : 2, three : 3});
 </pre>
 
       <p id="values">
-        <b class="method_name">values</b><code>_.values(object)</code>
+        <b class="header">values</b><code>_.values(object)</code>
         <br />
         Return all of the values of the <b>object</b>'s properties.
       </p>
@@ -571,7 +610,7 @@ _.values({one : 1, two : 2, three : 3});
 </pre>
 
       <p id="extend">
-        <b class="method_name">extend</b><code>_.extend(destination, source)</code>
+        <b class="header">extend</b><code>_.extend(destination, source)</code>
         <br />
         Copy all of the properties in the <b>source</b> object over to the 
         <b>destination</b> object.
@@ -582,7 +621,7 @@ _.extend({name : 'moe'}, {age : 50});
 </pre>
 
       <p id="clone">
-        <b class="method_name">clone</b><code>_.clone(object)</code>
+        <b class="header">clone</b><code>_.clone(object)</code>
         <br />
         Create a shallow-copied clone of the <b>object</b>. Any nested objects
         or arrays will be copied by reference, not duplicated.
@@ -593,7 +632,7 @@ _.clone({name : 'moe'});
 </pre>
 
       <p id="isEqual">
-        <b class="method_name">isEqual</b><code>_.isEqual(object, other)</code>
+        <b class="header">isEqual</b><code>_.isEqual(object, other)</code>
         <br />
         Performs an optimized deep comparison between the two objects, to determine
         if they should be considered equal.
@@ -608,7 +647,7 @@ _.isEqual(moe, clone);
 </pre>
 
       <p id="isElement">
-        <b class="method_name">isElement</b><code>_.isElement(object)</code>
+        <b class="header">isElement</b><code>_.isElement(object)</code>
         <br />
         Returns <i>true</i> if <b>object</b> is a DOM element.
       </p>
@@ -618,7 +657,7 @@ _.isElement(jQuery('body')[0]);
 </pre>
 
       <p id="isArray">
-        <b class="method_name">isArray</b><code>_.isArray(object)</code>
+        <b class="header">isArray</b><code>_.isArray(object)</code>
         <br />
         Returns <i>true</i> if <b>object</b> is an Array.
       </p>
@@ -630,7 +669,7 @@ _.isArray([1,2,3]);
 </pre>
 
       <p id="isFunction">
-        <b class="method_name">isFunction</b><code>_.isFunction(object)</code>
+        <b class="header">isFunction</b><code>_.isFunction(object)</code>
         <br />
         Returns <i>true</i> if <b>object</b> is a Function.
       </p>
@@ -640,7 +679,7 @@ _.isFunction(alert);
 </pre>
 
       <p id="isUndefined">
-        <b class="method_name">isUndefined</b><code>_.isUndefined(variable)</code>
+        <b class="header">isUndefined</b><code>_.isUndefined(variable)</code>
         <br />
         Returns <i>true</i> if <b>variable</b> is <i>undefined</i>.
       </p>
@@ -652,7 +691,7 @@ _.isUndefined(window.missingVariable);
       <h2>Utility Functions</h2>
       
       <p id="noConflict">
-        <b class="method_name">noConflict</b><code>_.noConflict()</code>
+        <b class="header">noConflict</b><code>_.noConflict()</code>
         <br />
         Give control of the "_" variable back to its previous owner. Returns
         a reference to the <b>Underscore</b> object.
@@ -661,7 +700,7 @@ _.isUndefined(window.missingVariable);
 var underscore = _.noConflict();</pre>
 
       <p id="uniqueId">
-        <b class="method_name">uniqueId</b><code>_.uniqueId([prefix])</code>
+        <b class="header">uniqueId</b><code>_.uniqueId([prefix])</code>
         <br />
         Generate a globally-unique id for client-side models or DOM elements 
         that need one. If <b>prefix</b> is passed, the id will be appended to it.
@@ -672,7 +711,7 @@ _.uniqueId('contact_');
 </pre>
 
       <p id="template">
-        <b class="method_name">template</b><code>_.template(templateString, [context])</code>
+        <b class="header">template</b><code>_.template(templateString, [context])</code>
         <br />
         Compiles Javascript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
@@ -694,6 +733,26 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 =&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
 </pre> 
 
+      <h2>Change Log</h2>
+      
+      <p>
+        <b class="header">0.2.0</b><br />
+        Added <tt>compose</tt> and <tt>lastIndexOf</tt>, renamed <tt>inject</tt> to
+        <tt>reduce</tt>, added aliases for <tt>inject</tt>, <tt>filter</tt>, 
+        <tt>every</tt>, <tt>some</tt>, and <tt>forEach</tt>.
+      </p>
+      
+      <p>
+        <b class="header">0.1.1</b><br />
+        Added <tt>noConflict</tt>, so that the "Underscore" object can be assigned to 
+        other variables.
+      </p>
+      
+      <p>
+        <b class="header">0.1.0</b><br />
+        Initial release of Underscore.js.
+      </p>
+
       <p>
         <a href="http://documentcloud.org/" title="A DocumentCloud Project" style="background:none;">
           <img src="http://jashkenas.s3.amazonaws.com/images/a_documentcloud_project.png" alt="A DocumentCloud Project" />
diff --git a/package.json b/package.json
new file mode 100644
index 000000000..0f55aaa87
--- /dev/null
+++ b/package.json
@@ -0,0 +1,12 @@
+// ServerJS package specification.
+{
+  "name": "underscore",
+  "description": "Functional programming aid for Javascript. Works well with jQuery.",
+  "url": "http://documentcloud.github.com/underscore/",
+  "keywords": ["util", "functional", "server", "client", "browser"],
+  "author": "Jeremy Ashkenas <jeremy@documentcloud.org>",
+  "maintainer": "Kris Kowal <kris.kowal@cixar.com>",
+  "contributors": [],
+  "dependencies": [],
+  "lib", "."
+}
diff --git a/test/arrays.js b/test/arrays.js
index e59397996..dd54c7266 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -49,4 +49,11 @@ $(document).ready(function() {
     equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
   });
   
+  test("arrays: lastIndexOf", function() {
+    var numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0];
+    numbers.lastIndexOf = null;
+    equals(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function');
+    equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
+  });
+  
 });
diff --git a/test/collections.js b/test/collections.js
index bed210ac2..f97e6e520 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -14,6 +14,10 @@ $(document).ready(function() {
     var answers = [];
     _.each([1, 2, 3], function(num) { answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
+    
+    answers = [];
+    _.forEach([1, 2, 3], function(num){ answers.push(num); });
+    equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
   });
   
   test('collections: map', function() {
@@ -24,9 +28,12 @@ $(document).ready(function() {
     equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
   });
   
-  test('collections: inject', function() {
-    var sum = _.inject([1,2,3], 0, function(sum, num){ return sum + num; });
+  test('collections: reduce', function() {
+    var sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'can sum up an array');
+    
+    sum = _.inject([1, 2, 3], 0, function(sum, num){ return sum + num; });
+    equals(sum, 6, 'aliased as "inject"');
   });
   
   test('collections: detect', function() {
@@ -35,12 +42,15 @@ $(document).ready(function() {
   });
   
   test('collections: select', function() {
-    var evens = _.select([1,2,3,4,5,6], function(num){ return num % 2 == 0; });
+    var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
     equals(evens.join(', '), '2, 4, 6', 'selected each even number');
+    
+    evens = _.filter([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+    equals(evens.join(', '), '2, 4, 6', 'aliased as "filter"');
   });
   
   test('collections: reject', function() {
-    var odds = _.reject([1,2,3,4,5,6], function(num){ return num % 2 == 0; });
+    var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
     equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
   });
   
@@ -50,6 +60,7 @@ $(document).ready(function() {
     ok(!_.all([true, false, true]), 'one false value');
     ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
     ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
+    ok(_.every([true, true, true]), 'aliased as "every"');
   });
   
   test('collections: any', function() {
@@ -58,6 +69,7 @@ $(document).ready(function() {
     ok(_.any([false, false, true]), 'one true value');
     ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
     ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
+    ok(_.some([false, false, true]), 'aliased as "some"');
   });
   
   test('collections: include', function() {
diff --git a/test/functions.js b/test/functions.js
index 039f7a746..9e401e4c7 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -48,4 +48,14 @@ $(document).ready(function() {
     equals(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
   });
   
+  test("functions: compose", function() {
+    var greet = function(name){ return "hi: " + name; };
+    var exclaim = function(sentence){ return sentence + '!'; };
+    var composed = _.compose(exclaim, greet);
+    equals(composed('moe'), 'hi: moe!', 'can compose a function that takes another');
+    
+    composed = _.compose(greet, exclaim);
+    equals(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
+  });
+  
 });
diff --git a/test/utility.js b/test/utility.js
index 9a8eb516f..af9680bb5 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -5,6 +5,8 @@ $(document).ready(function() {
   test("utility: noConflict", function() {
     var underscore = _.noConflict();
     ok(underscore.isUndefined(_), "The '_' variable has been returned to its previous state.");
+    var intersection = underscore.intersect([-1, 0, 1, 2], [1, 2, 3, 4]);
+    equals(intersection.join(', '), '1, 2', 'but the intersection function still works');
     window._ = underscore;
   });
     
diff --git a/underscore-min.js b/underscore-min.js
index 096ff0aac..98d0437b5 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-window.Underscore={VERSION:"0.1.1",PREVIOUS_UNDERSCORE:window._,each:function(c,f,a){var g=0;try{if(c.forEach){c.forEach(f,a)}else{if(c.length){for(var d=0;d<c.length;d++){f.call(a,c[d],d)}}else{if(c.each){c.each(function(e){f.call(a,e,g++)})}else{var d=0;for(var k in c){var j=c[k],b=[k,j];b.key=k;b.value=j;f.call(a,b,d++)}}}}}catch(h){if(h!="__break__"){throw h}}return c},map:function(d,c,b){if(d&&d.map){return d.map(c,b)}var a=[];_.each(d,function(f,e){a.push(c.call(b,f,e))});return a},inject:function(d,a,c,b){_.each(d,function(f,e){a=c.call(b,a,f,e)});return a},detect:function(d,c,b){var a;_.each(d,function(f,e){if(c.call(b,f,e)){a=f;throw"__break__"}});return a},select:function(d,c,b){if(d.filter){return d.filter(c,b)}var a=[];_.each(d,function(f,e){if(c.call(b,f,e)){a.push(f)}});return a},reject:function(d,c,b){var a=[];_.each(d,function(f,e){if(!c.call(b,f,e)){a.push(f)}});return a},all:function(d,c,b){c=c||function(e){return e};if(d.every){return d.every(c,b)}var a=true;_.each(d,function(f,e){a=a&&!!c.call(b,f,e);if(!a){throw"__break__"}});return a},any:function(d,c,b){c=c||function(e){return e};if(d.some){return d.some(c,b)}var a=false;_.each(d,function(f,e){if(a=!!c.call(b,f,e)){throw"__break__"}});return a},include:function(c,b){if(_.isArray(c)){return _.indexOf(c,b)!=-1}var a=false;_.each(c,function(d){if(d.value===b){a=true;throw"__break__"}});return a},invoke:function(b,c){var a=_.toArray(arguments).slice(2);return _.map(b,function(d){return(c?d[c]:d).apply(d,a)})},pluck:function(c,b){var a=[];_.each(c,function(d){a.push(d[b])});return a},max:function(d,c,b){if(!c&&_.isArray(d)){return Math.max.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f>=a.computed){a={value:g,computed:f}}});return a.value},min:function(d,c,b){if(!c&&_.isArray(d)){return Math.min.apply(Math,d)}var a;_.each(d,function(g,e){var f=c?c.call(b,g,e):g;if(a==null||f<a.computed){a={value:g,computed:f}}});return a.value},sortBy:function(c,b,a){return _.pluck(_.map(c,function(e,d){return{value:e,criteria:b.call(a,e,d)}}).sort(function(g,f){var e=g.criteria,d=f.criteria;return e<d?-1:e>d?1:0}),"value")},sortedIndex:function(f,e,c){c=c||function(g){return g};var a=0,d=f.length;while(a<d){var b=(a+d)>>1;c(f[b])<c(e)?a=b+1:d=b}return a},toArray:function(a){if(!a){return[]}if(_.isArray(a)){return a}return _.map(a,function(b){return b})},size:function(a){return _.toArray(a).length},first:function(a){return a[0]},last:function(a){return a[a.length-1]},compact:function(a){return _.select(a,function(b){return !!b})},flatten:function(a){return _.inject(a,[],function(b,c){if(_.isArray(c)){return b.concat(_.flatten(c))}b.push(c);return b})},without:function(b){var a=b.slice.call(arguments,0);return _.select(b,function(c){return !_.include(a,c)})},uniq:function(b,a){return _.inject(b,[],function(c,e,d){if(0==d||(a?_.last(c)!=e:!_.include(c,e))){c.push(e)}return c})},intersect:function(b){var a=_.toArray(arguments).slice(1);return _.select(_.uniq(b),function(c){return _.all(a,function(d){return _.indexOf(d,c)>=0})})},zip:function(){var a=_.toArray(arguments);var d=_.max(_.pluck(a,"length"));var c=new Array(d);for(var b=0;b<d;b++){c[b]=_.pluck(a,String(b))}return c},indexOf:function(c,b){if(c.indexOf){return c.indexOf(b)}var a=c.length;for(i=0;i<a;i++){if(c[i]===b){return i}}return -1},bind:function(c,b){if(!b){return c}var a=_.toArray(arguments).slice(2);return function(){var d=a.concat(_.toArray(arguments));return c.apply(b,d)}},bindAll:function(){var a=_.toArray(arguments);var b=a.pop();_.each(a,function(c){b[c]=_.bind(b[c],b)})},delay:function(b,c){var a=_.toArray(arguments).slice(2);return window.setTimeout(function(){return b.apply(b,a)},c)},defer:function(a){return _.delay.apply(_,[a,1].concat(_.toArray(arguments).slice(1)))},wrap:function(a,b){return function(){var c=[a].concat(_.toArray(arguments));return b.apply(b,c)}},keys:function(a){return _.pluck(a,"key")},values:function(a){return _.pluck(a,"value")},extend:function(a,c){for(var b in c){a[b]=c[b]}return a},clone:function(a){return _.extend({},a)},isEqual:function(d,c){if(d===c){return true}var g=typeof(d),j=typeof(c);if(g!=j){return false}if(d==c){return true}if(d.isEqual){return d.isEqual(c)}if(g!=="object"){return false}var e=_.keys(d),h=_.keys(c);if(e.length!=h.length){return false}for(var f in d){if(!_.isEqual(d[f],c[f])){return false}}return true},isElement:function(a){return !!(a&&a.nodeType==1)},isArray:function(a){return Object.prototype.toString.call(a)=="[object Array]"},isFunction:function(a){return typeof a=="function"},isUndefined:function(a){return typeof a=="undefined"},noConflict:function(){window._=Underscore.PREVIOUS_UNDERSCORE;return this},uniqueId:function(a){var b=this._idCounter=(this._idCounter||0)+1;return a?a+b:b},template:function(c,b){var a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+c.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?a(b):a}};window._=Underscore;
\ No newline at end of file
+(function(){var a=(typeof window!="undefined")?window:exports;var c=a._;var b=a._={};b.VERSION="0.2.0";b.each=function(g,j,d){var k=0;try{if(g.forEach){g.forEach(j,d)}else{if(g.length){for(var h=0;h<g.length;h++){j.call(d,g[h],h)}}else{if(g.each){g.each(function(e){j.call(d,e,k++)})}else{var h=0;for(var n in g){var m=g[n],f=[n,m];f.key=n;f.value=m;j.call(d,f,h++)}}}}}catch(l){if(l!="__break__"){throw l}}return g};b.map=function(g,f,e){if(g&&g.map){return g.map(f,e)}var d=[];b.each(g,function(j,h){d.push(f.call(e,j,h))});return d};b.reduce=function(g,d,f,e){b.each(g,function(j,h){d=f.call(e,d,j,h)});return d};b.detect=function(g,f,e){var d;b.each(g,function(j,h){if(f.call(e,j,h)){d=j;throw"__break__"}});return d};b.select=function(g,f,e){if(g.filter){return g.filter(f,e)}var d=[];b.each(g,function(j,h){if(f.call(e,j,h)){d.push(j)}});return d};b.reject=function(g,f,e){var d=[];b.each(g,function(j,h){if(!f.call(e,j,h)){d.push(j)}});return d};b.all=function(g,f,e){f=f||function(h){return 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j=f?f.call(e,k,h):k;if(d==null||j<d.computed){d={value:k,computed:j}}});return d.value};b.sortBy=function(f,e,d){return b.pluck(b.map(f,function(h,g){return{value:h,criteria:e.call(d,h,g)}}).sort(function(k,j){var h=k.criteria,g=j.criteria;return h<g?-1:h>g?1:0}),"value")};b.sortedIndex=function(j,h,f){f=f||function(k){return k};var d=0,g=j.length;while(d<g){var e=(d+g)>>1;f(j[e])<f(h)?d=e+1:g=e}return d};b.toArray=function(d){if(!d){return[]}if(b.isArray(d)){return d}return b.map(d,function(e){return e})};b.size=function(d){return b.toArray(d).length};b.first=function(d){return d[0]};b.last=function(d){return d[d.length-1]};b.compact=function(d){return b.select(d,function(e){return !!e})};b.flatten=function(d){return b.reduce(d,[],function(e,f){if(b.isArray(f)){return e.concat(b.flatten(f))}e.push(f);return e})};b.without=function(e){var d=e.slice.call(arguments,0);return b.select(e,function(f){return !b.include(d,f)})};b.uniq=function(e,d){return 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Array]"};b.isFunction=function(d){return typeof d=="function"};b.isUndefined=function(d){return typeof d=="undefined"};b.noConflict=function(){a._=c;return this};b.uniqueId=function(d){var e=this._idCounter=(this._idCounter||0)+1;return d?d+e:e};b.template=function(f,e){var d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+f.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return e?d(e):d};b.forEach=b.each;b.inject=b.reduce;b.filter=b.select;b.every=b.all;b.some=b.any;if(!b.isUndefined(exports)){exports=b}})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 0091abd90..7b48ab101 100644
--- a/underscore.js
+++ b/underscore.js
@@ -5,17 +5,22 @@
 // Oliver Steele's Functional, And John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore/
-window.Underscore = {
+
+(function() {
   
-  VERSION : '0.1.1',
+  var root = (typeof window != 'undefined') ? window : exports;
   
-  PREVIOUS_UNDERSCORE : window._,
+  var previousUnderscore = root._;
   
+  var _ = root._ = {};
+  
+  _.VERSION = '0.2.0';
+      
   /*------------------------ Collection Functions: ---------------------------*/
     
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, each, arrays, and raw objects.
-  each : function(obj, iterator, context) {
+  _.each = function(obj, iterator, context) {
     var index = 0;
     try {
       if (obj.forEach) {
@@ -37,30 +42,30 @@ window.Underscore = {
       if (e != '__break__') throw e;
     }
     return obj;
-  },
+  };
   
   // Return the results of applying the iterator to each element. Use Javascript
   // 1.6's version of map, if possible.
-  map : function(obj, iterator, context) {
+  _.map = function(obj, iterator, context) {
     if (obj && obj.map) return obj.map(iterator, context);
     var results = [];
     _.each(obj, function(value, index) {
       results.push(iterator.call(context, value, index));
     });
     return results;
-  },
+  };
   
-  // Inject builds up a single result from a list of values. Also known as
-  // reduce, or foldl.
-  inject : function(obj, memo, iterator, context) {
+  // Reduce builds up a single result from a list of values. Also known as
+  // inject, or foldl.
+  _.reduce = function(obj, memo, iterator, context) {
     _.each(obj, function(value, index) {
       memo = iterator.call(context, memo, value, index);
     });
     return memo;
-  },
+  };
   
   // Return the first value which passes a truth test.
-  detect : function(obj, iterator, context) {
+  _.detect = function(obj, iterator, context) {
     var result;
     _.each(obj, function(value, index) {
       if (iterator.call(context, value, index)) {
@@ -69,31 +74,31 @@ window.Underscore = {
       }
     });
     return result;
-  },
+  };
   
   // Return all the elements that pass a truth test. Use Javascript 1.6's
   // filter(), if it exists.
-  select : function(obj, iterator, context) {
+  _.select = function(obj, iterator, context) {
     if (obj.filter) return obj.filter(iterator, context);
     var results = [];
     _.each(obj, function(value, index) {
       if (iterator.call(context, value, index)) results.push(value);
     });
     return results;
-  },
+  };
   
   // Return all the elements for which a truth test fails.
-  reject : function(obj, iterator, context) {
+  _.reject = function(obj, iterator, context) {
     var results = [];
     _.each(obj, function(value, index) {
       if (!iterator.call(context, value, index)) results.push(value);
     });
     return results;
-  },
+  };
   
   // Determine whether all of the elements match a truth test. Delegate to
   // Javascript 1.6's every(), if it is present.
-  all : function(obj, iterator, context) {
+  _.all = function(obj, iterator, context) {
     iterator = iterator || function(v){ return v; };
     if (obj.every) return obj.every(iterator, context);
     var result = true;
@@ -102,11 +107,11 @@ window.Underscore = {
       if (!result) throw '__break__';
     });
     return result;
-  },
+  };
   
   // Determine if at least one element in the object matches a truth test. Use
   // Javascript 1.6's some(), if it exists.
-  any : function(obj, iterator, context) {
+  _.any = function(obj, iterator, context) {
     iterator = iterator || function(v) { return v; };
     if (obj.some) return obj.some(iterator, context);
     var result = false;
@@ -114,11 +119,11 @@ window.Underscore = {
       if (result = !!iterator.call(context, value, index)) throw '__break__';
     });
     return result;
-  },
+  };
   
   // Determine if a given value is included in the array or object, 
   // based on '==='.
-  include : function(obj, target) {
+  _.include = function(obj, target) {
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
     _.each(obj, function(pair) {
@@ -128,25 +133,25 @@ window.Underscore = {
       }
     });
     return found;
-  },
+  };
   
   // Invoke a method with arguments on every item in a collection.
-  invoke : function(obj, method) {
+  _.invoke = function(obj, method) {
     var args = _.toArray(arguments).slice(2);
     return _.map(obj, function(value) {
       return (method ? value[method] : value).apply(value, args);
     });
-  },
+  };
   
   // Optimized version of a common use case of map: fetching a property.
-  pluck : function(obj, key) {
+  _.pluck = function(obj, key) {
     var results = [];
     _.each(obj, function(value){ results.push(value[key]); });
     return results;
-  },
+  };
   
   // Return the maximum item or (item-based computation).
-  max : function(obj, iterator, context) {
+  _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
     var result;
     _.each(obj, function(value, index) {
@@ -154,10 +159,10 @@ window.Underscore = {
       if (result == null || computed >= result.computed) result = {value : value, computed : computed};
     });
     return result.value;
-  },
+  };
   
   // Return the minimum element (or element-based computation).
-  min : function(obj, iterator, context) {
+  _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
     var result;
     _.each(obj, function(value, index) {
@@ -165,10 +170,10 @@ window.Underscore = {
       if (result == null || computed < result.computed) result = {value : value, computed : computed};
     });
     return result.value;
-  },
+  };
   
   // Sort the object's values by a criteria produced by an iterator.
-  sortBy : function(obj, iterator, context) {
+  _.sortBy = function(obj, iterator, context) {
     return _.pluck(_.map(obj, function(value, index) {
       return {
         value : value,
@@ -178,11 +183,11 @@ window.Underscore = {
       var a = left.criteria, b = right.criteria;
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
-  },
+  };
   
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
-  sortedIndex : function(array, obj, iterator) {
+  _.sortedIndex = function(array, obj, iterator) {
     iterator = iterator || function(val) { return val; };
     var low = 0, high = array.length;
     while (low < high) {
@@ -190,163 +195,182 @@ window.Underscore = {
       iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
     }
     return low;
-  },
+  };
   
   // Convert anything iterable into a real, live array.
-  toArray : function(iterable) {
+  _.toArray = function(iterable) {
     if (!iterable) return [];
     if (_.isArray(iterable)) return iterable;
     return _.map(iterable, function(val){ return val; });
-  },
+  };
   
   // Return the number of elements in an object.
-  size : function(obj) {
+  _.size = function(obj) {
     return _.toArray(obj).length;
-  },
+  };
   
   /*-------------------------- Array Functions: ------------------------------*/
   
   // Get the first element of an array.
-  first : function(array) {
+  _.first = function(array) {
     return array[0];
-  },
+  };
   
   // Get the last element of an array.
-  last : function(array) {
+  _.last = function(array) {
     return array[array.length - 1];
-  },
+  };
   
   // Trim out all falsy values from an array.
-  compact : function(array) {
+  _.compact = function(array) {
     return _.select(array, function(value){ return !!value; });
-  },
+  };
   
   // Return a completely flattened version of an array.
-  flatten : function(array) {
-    return _.inject(array, [], function(memo, value) {
+  _.flatten = function(array) {
+    return _.reduce(array, [], function(memo, value) {
       if (_.isArray(value)) return memo.concat(_.flatten(value));
       memo.push(value);
       return memo;
     });
-  },
+  };
   
   // Return a version of the array that does not contain the specified value(s).
-  without : function(array) {
+  _.without = function(array) {
     var values = array.slice.call(arguments, 0);
     return _.select(array, function(value){ return !_.include(values, value); });
-  },
+  };
   
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
-  uniq : function(array, isSorted) {
-    return _.inject(array, [], function(memo, el, i) {
+  _.uniq = function(array, isSorted) {
+    return _.reduce(array, [], function(memo, el, i) {
       if (0 == i || (isSorted ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
       return memo;
     });
-  },
+  };
   
   // Produce an array that contains every item shared between all the 
   // passed-in arrays.
-  intersect : function(array) {
+  _.intersect = function(array) {
     var rest = _.toArray(arguments).slice(1);
     return _.select(_.uniq(array), function(item) {
       return _.all(rest, function(other) { 
         return _.indexOf(other, item) >= 0;
       });
     });
-  },
+  };
   
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
-  zip : function() {
+  _.zip = function() {
     var args = _.toArray(arguments);
     var length = _.max(_.pluck(args, 'length'));
     var results = new Array(length);
     for (var i=0; i<length; i++) results[i] = _.pluck(args, String(i));
     return results;
-  },
+  };
   
   // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE), 
   // we need this function. Return the position of the first occurence of an 
   // item in an array, or -1 if the item is not included in the array.
-  indexOf : function(array, item) {
+  _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
-    var length = array.length;
-    for (i=0; i<length; i++) if (array[i] === item) return i;
+    for (i=0; i<array.length; i++) if (array[i] === item) return i;
     return -1;
-  },
+  };
+  
+  // Provide Javascript 1.6's lastIndexOf, delegating to the native function,
+  // if possible.
+  _.lastIndexOf = function(array, item) {
+    if (array.lastIndexOf) return array.lastIndexOf(item);
+    for (i=array.length - 1; i>=0; i--) if (array[i] === item) return i;
+    return -1;
+  };
   
   /* ----------------------- Function Functions: -----------------------------*/
   
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
-  bind : function(func, context) {
+  _.bind = function(func, context) {
     if (!context) return func;
     var args = _.toArray(arguments).slice(2);
     return function() {
       var a = args.concat(_.toArray(arguments));
       return func.apply(context, a);
     };
-  },
+  };
   
   // Bind all of an object's methods to that object. Useful for ensuring that 
   // all callbacks defined on an object belong to it.
-  bindAll : function() {
+  _.bindAll = function() {
     var args = _.toArray(arguments);
     var context = args.pop();
     _.each(args, function(methodName) {
       context[methodName] = _.bind(context[methodName], context);
     });
-  },
+  };
   
   // Delays a function for the given number of milliseconds, and then calls
   // it with the arguments supplied.
-  delay : function(func, wait) {
+  _.delay = function(func, wait) {
     var args = _.toArray(arguments).slice(2);
-    return window.setTimeout(function(){ return func.apply(func, args); }, wait);
-  },
+    return setTimeout(function(){ return func.apply(func, args); }, wait);
+  };
   
   // Defers a function, scheduling it to run after the current call stack has 
   // cleared.
-  defer : function(func) {
+  _.defer = function(func) {
     return _.delay.apply(_, [func, 1].concat(_.toArray(arguments).slice(1)));
-  },
+  };
   
   // Returns the first function passed as an argument to the second, 
   // allowing you to adjust arguments, run code before and after, and 
   // conditionally execute the original function.
-  wrap : function(func, wrapper) {
+  _.wrap = function(func, wrapper) {
     return function() {
       var args = [func].concat(_.toArray(arguments));
       return wrapper.apply(wrapper, args);
     };
-  },
+  };
+  
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = _.toArray(arguments);
+    return function() {
+      for (var i=funcs.length-1; i >= 0; i--) {
+        arguments = [funcs[i].apply(this, arguments)];
+      }
+      return arguments[0];
+    };
+  };
   
   /* ------------------------- Object Functions: ---------------------------- */
   
   // Retrieve the names of an object's properties.
-  keys : function(obj) {
+  _.keys = function(obj) {
     return _.pluck(obj, 'key');
-  },
+  };
   
   // Retrieve the values of an object's properties.
-  values : function(obj) {
+  _.values = function(obj) {
     return _.pluck(obj, 'value');
-  },
+  };
   
   // Extend a given object with all of the properties in a source object.
-  extend : function(destination, source) {
+  _.extend = function(destination, source) {
     for (var property in source) destination[property] = source[property];
     return destination;
-  },
+  };
   
   // Create a (shallow-cloned) duplicate of an object.
-  clone : function(obj) {
+  _.clone = function(obj) {
     return _.extend({}, obj);
-  },
+  };
   
   // Perform a deep comparison to check if two objects are equal.
-  isEqual : function(a, b) {
+  _.isEqual = function(a, b) {
     // Check object identity.
     if (a === b) return true;
     // Different types?
@@ -365,47 +389,47 @@ window.Underscore = {
     // Recursive comparison of contents.
     for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
     return true;
-  },
+  };
   
   // Is a given value a DOM element?
-  isElement : function(obj) {
+  _.isElement = function(obj) {
     return !!(obj && obj.nodeType == 1);
-  },
+  };
   
   // Is a given value a real Array?
-  isArray : function(obj) {
+  _.isArray = function(obj) {
     return Object.prototype.toString.call(obj) == '[object Array]';
-  },
+  };
   
   // Is a given value a Function?
-  isFunction : function(obj) {
+  _.isFunction = function(obj) {
     return typeof obj == 'function';
-  },
+  };
   
   // Is a given variable undefined?
-  isUndefined : function(obj) {
+  _.isUndefined = function(obj) {
     return typeof obj == 'undefined';
-  },
+  };
   
   /* -------------------------- Utility Functions: -------------------------- */
   
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
-  noConflict : function() {
-    window._ = Underscore.PREVIOUS_UNDERSCORE;
+  _.noConflict = function() {
+    root._ = previousUnderscore;
     return this;
-  },
+  };
   
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
-  uniqueId : function(prefix) {
+  _.uniqueId = function(prefix) {
     var id = this._idCounter = (this._idCounter || 0) + 1;
     return prefix ? prefix + id : id;
-  },
+  };
   
   // Javascript templating a-la ERB, pilfered from John Resig's 
   // "Secrets of the Javascript Ninja", page 83.
-  template : function(str, data) {
+  _.template = function(str, data) {
     var fn = new Function('obj', 
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
@@ -419,8 +443,18 @@ window.Underscore = {
         .split("\r").join("\\'") 
     + "');}return p.join('');");
     return data ? fn(data) : fn;  
-  }
+  };
   
-};
+  /*------------------------------- Aliases ----------------------------------*/
 
-window._ = Underscore;
+  _.forEach  = _.each;
+  _.inject   = _.reduce;
+  _.filter   = _.select;
+  _.every    = _.all;
+  _.some     = _.any;
+  
+  /*------------------------- Export for ServerJS ----------------------------*/
+  
+  if (!_.isUndefined(exports)) exports = _;
+
+})();

From df2742de1767c0ded3cf37dd88d094c7d59bc882 Mon Sep 17 00:00:00 2001
From: Dmitry Baranovskiy <dmitry.baranovskiy@gmail.com>
Date: Thu, 29 Oct 2009 11:05:45 +1100
Subject: [PATCH 022/533] Some little optimisation.

---
 underscore.js | 46 ++++++++++++++++++++++------------------------
 1 file changed, 22 insertions(+), 24 deletions(-)

diff --git a/underscore.js b/underscore.js
index 7b48ab101..901f69594 100644
--- a/underscore.js
+++ b/underscore.js
@@ -26,12 +26,12 @@
       if (obj.forEach) {
         obj.forEach(iterator, context);
       } else if (obj.length) {
-        for (var i=0; i<obj.length; i++) iterator.call(context, obj[i], i);
+        for (var i=0, ii = obj.length; i<ii; i++) iterator.call(context, obj[i], i);
       } else if (obj.each) {
         obj.each(function(value) { iterator.call(context, value, index++); });
       } else {
         var i = 0;
-        for (var key in obj) {
+        for (var key in obj) if (obj.hasOwnProperty(key)) {
           var value = obj[key], pair = [key, value];
           pair.key = key;
           pair.value = value;
@@ -44,7 +44,7 @@
     return obj;
   };
   
-  // Return the results of applying the iterator to each element. Use Javascript
+  // Return the results of applying the iterator to each element. Use JavaScript
   // 1.6's version of map, if possible.
   _.map = function(obj, iterator, context) {
     if (obj && obj.map) return obj.map(iterator, context);
@@ -76,13 +76,13 @@
     return result;
   };
   
-  // Return all the elements that pass a truth test. Use Javascript 1.6's
+  // Return all the elements that pass a truth test. Use JavaScript 1.6's
   // filter(), if it exists.
   _.select = function(obj, iterator, context) {
     if (obj.filter) return obj.filter(iterator, context);
     var results = [];
     _.each(obj, function(value, index) {
-      if (iterator.call(context, value, index)) results.push(value);
+      iterator.call(context, value, index) && results.push(value);
     });
     return results;
   };
@@ -91,32 +91,30 @@
   _.reject = function(obj, iterator, context) {
     var results = [];
     _.each(obj, function(value, index) {
-      if (!iterator.call(context, value, index)) results.push(value);
+      !iterator.call(context, value, index) && results.push(value);
     });
     return results;
   };
   
   // Determine whether all of the elements match a truth test. Delegate to
-  // Javascript 1.6's every(), if it is present.
+  // JavaScript 1.6's every(), if it is present.
   _.all = function(obj, iterator, context) {
-    iterator = iterator || function(v){ return v; };
     if (obj.every) return obj.every(iterator, context);
     var result = true;
     _.each(obj, function(value, index) {
-      result = result && !!iterator.call(context, value, index);
-      if (!result) throw '__break__';
+      if (!(result = result && iterator ? iterator.call(context, value, index) : value)) throw '__break__';
     });
     return result;
   };
   
   // Determine if at least one element in the object matches a truth test. Use
-  // Javascript 1.6's some(), if it exists.
+  // JavaScript 1.6's some(), if it exists.
   _.any = function(obj, iterator, context) {
     iterator = iterator || function(v) { return v; };
     if (obj.some) return obj.some(iterator, context);
     var result = false;
     _.each(obj, function(value, index) {
-      if (result = !!iterator.call(context, value, index)) throw '__break__';
+      if (result = iterator ? iterator.call(context, value, index) : value) throw '__break__';
     });
     return result;
   };
@@ -127,8 +125,7 @@
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
     _.each(obj, function(pair) {
-      if (pair.value === target) {
-        found = true;
+      if (found = pair.value === target) {
         throw '__break__';
       }
     });
@@ -153,10 +150,10 @@
   // Return the maximum item or (item-based computation).
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
-    var result;
+    var result = {computed : -Infinity};
     _.each(obj, function(value, index) {
       var computed = iterator ? iterator.call(context, value, index) : value;
-      if (result == null || computed >= result.computed) result = {value : value, computed : computed};
+      computed >= result.computed && (result = {value : value, computed : computed});
     });
     return result.value;
   };
@@ -164,10 +161,10 @@
   // Return the minimum element (or element-based computation).
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
-    var result;
+    var result = {computed : Infinity};
     _.each(obj, function(value, index) {
       var computed = iterator ? iterator.call(context, value, index) : value;
-      if (result == null || computed < result.computed) result = {value : value, computed : computed};
+      computed < result.computed && (result = {value : value, computed : computed});
     });
     return result.value;
   };
@@ -276,15 +273,16 @@
   // item in an array, or -1 if the item is not included in the array.
   _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
-    for (i=0; i<array.length; i++) if (array[i] === item) return i;
+    for (i=0, ii=array.length; i<ii; i++) if (array[i] === item) return i;
     return -1;
   };
   
-  // Provide Javascript 1.6's lastIndexOf, delegating to the native function,
+  // Provide JavaScript 1.6's lastIndexOf, delegating to the native function,
   // if possible.
   _.lastIndexOf = function(array, item) {
     if (array.lastIndexOf) return array.lastIndexOf(item);
-    for (i=array.length - 1; i>=0; i--) if (array[i] === item) return i;
+    var i = array.length;
+    while (i--) if (array[i] === item) return i;
     return -1;
   };
   
@@ -403,7 +401,7 @@
   
   // Is a given value a Function?
   _.isFunction = function(obj) {
-    return typeof obj == 'function';
+    return Object.prototype.toString.call(obj) == '[object Function]';
   };
   
   // Is a given variable undefined?
@@ -427,8 +425,8 @@
     return prefix ? prefix + id : id;
   };
   
-  // Javascript templating a-la ERB, pilfered from John Resig's 
-  // "Secrets of the Javascript Ninja", page 83.
+  // JavaScript templating a-la ERB, pilfered from John Resig's 
+  // "Secrets of the JavaScript Ninja", page 83.
   _.template = function(str, data) {
     var fn = new Function('obj', 
       'var p=[],print=function(){p.push.apply(p,arguments);};' +

From 79c4c992d86eb8bac5f2dd1477ce4daf67e04c38 Mon Sep 17 00:00:00 2001
From: kriskowal <kris.kowal@cixar.com>
Date: Wed, 28 Oct 2009 17:10:51 -0700
Subject: [PATCH 023/533] Fixed a couple bugs in package.json.  Works in
 Narwhal.

---
 package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 0f55aaa87..3e7ce81f3 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
-// ServerJS package specification.
 {
+  "!": "This is a Narwhal package descriptor.", 
   "name": "underscore",
   "description": "Functional programming aid for Javascript. Works well with jQuery.",
   "url": "http://documentcloud.github.com/underscore/",
@@ -8,5 +8,5 @@
   "maintainer": "Kris Kowal <kris.kowal@cixar.com>",
   "contributors": [],
   "dependencies": [],
-  "lib", "."
+  "lib": "."
 }

From 5026224597bfee903b4cadf051d22af0a2ff1620 Mon Sep 17 00:00:00 2001
From: kriskowal <kris.kowal@cixar.com>
Date: Wed, 28 Oct 2009 17:16:59 -0700
Subject: [PATCH 024/533] Fixed an object.hasOwnProperty('hasOwnProperty') bug.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 901f69594..fc5630281 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,7 +31,7 @@
         obj.each(function(value) { iterator.call(context, value, index++); });
       } else {
         var i = 0;
-        for (var key in obj) if (obj.hasOwnProperty(key)) {
+        for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) {
           var value = obj[key], pair = [key, value];
           pair.key = key;
           pair.value = value;

From f997a17c8965c9cfa9a19e932666348695712332 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 22:30:52 -0400
Subject: [PATCH 025/533] docs typo fix

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 7b48ab101..30990a84e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -2,7 +2,7 @@
 // (c) 2009 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the terms of the MIT license.
 // Portions of Underscore are inspired by or borrowed from Prototype.js, 
-// Oliver Steele's Functional, And John Resig's Micro-Templating.
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore/
 

From 4f783846de50e8de6d3001eb1ae23b9d041ccf23 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 23:21:24 -0400
Subject: [PATCH 026/533] merged in kriskowal's CommonJS branch and Dmitry
 Baranovskiy's optimizations

---
 README              |  4 ++--
 index.html          | 14 +++++++-------
 package.json        | 19 +++++++++----------
 test/collections.js |  7 +++++++
 underscore.js       | 17 ++++++++++-------
 5 files changed, 35 insertions(+), 26 deletions(-)

diff --git a/README b/README
index 1bf4faf29..e41015cd7 100644
--- a/README
+++ b/README
@@ -8,10 +8,10 @@
                                                                               \ \____/      
                                                                                \/___/
 
-Underscore is a utility-belt library for Javascript that provides 
+Underscore is a utility-belt library for JavaScript that provides 
 a lot of the functional programming support that you would expect 
 in Prototype.js (or Ruby), but without extending any of the built-
-in Javascript objects. It's the tie to go along with jQuery's tux.
+in JavaScript objects. It's the tie to go along with jQuery's tux.
 
 For Docs, License, Tests, and pre-packed downloads, see:
 http://documentcloud.github.com/underscore/
diff --git a/index.html b/index.html
index 11f706290..88c32d94f 100644
--- a/index.html
+++ b/index.html
@@ -72,11 +72,11 @@
     
     <p>
       <a href="http://github.com/documentcloud/underscore/">Underscore</a> is a 
-      utility-belt library for Javascript that provides a lot of the
+      utility-belt library for JavaScript that provides a lot of the
       functional programming support that you would expect in
       <a href="http://prototypejs.org/api">Prototype.js</a> 
       (or <a href="http://www.ruby-doc.org/core/classes/Enumerable.html">Ruby</a>), 
-      but without extending any of the built-in Javascript objects. It's the 
+      but without extending any of the built-in JavaScript objects. It's the 
       tie to go along with <a href="http://docs.jquery.com">jQuery</a>'s tux.
     </p>
     
@@ -86,7 +86,7 @@
       as well as more specialized helpers: function binding, javascript 
       templating, deep equality testing, and so on. It delegates to built-in 
       functions, if present, so 
-      <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">Javascript 1.6</a> 
+      <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">JavaScript 1.6</a> 
       compliant browsers will use the 
       native implementations of <b>forEach</b>, <b>map</b>, <b>filter</b>, 
       <b>every</b>, <b>some</b> and <b>indexOf</b>.
@@ -171,7 +171,7 @@
         <br />
         Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
-        passed. If <b>list</b> is a Javascript object, a pair with <b>key</b>
+        passed. If <b>list</b> is a JavaScript object, a pair with <b>key</b>
         and <b>value</b> properties will be yielded. If the list has an <b>each</b> 
         method of its own, it will be used instead. Delegates to the native 
         <b>forEach</b> function if it exists.
@@ -403,7 +403,7 @@ _.last([3, 2, 1]);
         <b class="header">compact</b><code>_.compact(array)</code>
         <br />
         Returns a copy of the <b>array</b> with all falsy values removed. 
-        In Javascript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>, 
+        In JavaScript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>, 
         <i>undefined</i> and <i>NaN</i> are all falsy.
       </p>
       <pre>
@@ -713,10 +713,10 @@ _.uniqueId('contact_');
       <p id="template">
         <b class="header">template</b><code>_.template(templateString, [context])</code>
         <br />
-        Compiles Javascript templates into functions that can be evaluated
+        Compiles JavaScript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
         data sources. Template functions can both interpolate variables, using<br />
-        <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary Javascript code, with 
+        <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary JavaScript code, with 
         <i>&lt;% &hellip; %&gt;</i>. When you evaluate a template function, pass in a
         <b>context</b> object that has properties corresponding to the template's free
         variables. If you're writing a one-off, you can pass the <b>context</b>
diff --git a/package.json b/package.json
index 3e7ce81f3..2cbc8128d 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,11 @@
 {
-  "!": "This is a Narwhal package descriptor.", 
-  "name": "underscore",
-  "description": "Functional programming aid for Javascript. Works well with jQuery.",
-  "url": "http://documentcloud.github.com/underscore/",
-  "keywords": ["util", "functional", "server", "client", "browser"],
-  "author": "Jeremy Ashkenas <jeremy@documentcloud.org>",
-  "maintainer": "Kris Kowal <kris.kowal@cixar.com>",
-  "contributors": [],
-  "dependencies": [],
-  "lib": "."
+  "name"          : "underscore",
+  "description"   : "Functional programming aid for JavaScript. Works well with jQuery.",
+  "url"           : "http://documentcloud.github.com/underscore/",
+  "keywords"      : ["util", "functional", "server", "client", "browser"],
+  "author"        : "Jeremy Ashkenas <jeremy@documentcloud.org>",
+  "maintainer"    : "Kris Kowal <kris.kowal@cixar.com>",
+  "contributors"  : [],
+  "dependencies"  : [],
+  "lib"           : "."
 }
diff --git a/test/collections.js b/test/collections.js
index f97e6e520..8fb684a07 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -18,6 +18,13 @@ $(document).ready(function() {
     answers = [];
     _.forEach([1, 2, 3], function(num){ answers.push(num); });
     equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
+    
+    answers = [];
+    var obj = {one : 1, two : 2, three : 3};
+    obj.constructor.prototype.four = 4;
+    _.each(obj, function(pair){ answers.push(pair.key); });
+    equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
+    delete obj.constructor.prototype.four;
   });
   
   test('collections: map', function() {
diff --git a/underscore.js b/underscore.js
index c89842dd9..f5b8610c2 100644
--- a/underscore.js
+++ b/underscore.js
@@ -12,6 +12,8 @@
   
   var previousUnderscore = root._;
   
+  var identity = function(value) { return value; };
+    
   var _ = root._ = {};
   
   _.VERSION = '0.2.0';
@@ -26,7 +28,7 @@
       if (obj.forEach) {
         obj.forEach(iterator, context);
       } else if (obj.length) {
-        for (var i=0, ii = obj.length; i<ii; i++) iterator.call(context, obj[i], i);
+        for (var i=0, l = obj.length; i<l; i++) iterator.call(context, obj[i], i);
       } else if (obj.each) {
         obj.each(function(value) { iterator.call(context, value, index++); });
       } else {
@@ -99,10 +101,11 @@
   // Determine whether all of the elements match a truth test. Delegate to
   // JavaScript 1.6's every(), if it is present.
   _.all = function(obj, iterator, context) {
+    iterator = iterator || identity;
     if (obj.every) return obj.every(iterator, context);
     var result = true;
     _.each(obj, function(value, index) {
-      if (!(result = result && iterator ? iterator.call(context, value, index) : value)) throw '__break__';
+      if (!(result = result && iterator.call(context, value, index))) throw '__break__';
     });
     return result;
   };
@@ -110,11 +113,11 @@
   // Determine if at least one element in the object matches a truth test. Use
   // JavaScript 1.6's some(), if it exists.
   _.any = function(obj, iterator, context) {
-    iterator = iterator || function(v) { return v; };
+    iterator = iterator || identity;
     if (obj.some) return obj.some(iterator, context);
     var result = false;
     _.each(obj, function(value, index) {
-      if (result = iterator ? iterator.call(context, value, index) : value) throw '__break__';
+      if (result = iterator.call(context, value, index)) throw '__break__';
     });
     return result;
   };
@@ -185,7 +188,7 @@
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
   _.sortedIndex = function(array, obj, iterator) {
-    iterator = iterator || function(val) { return val; };
+    iterator = iterator || identity;
     var low = 0, high = array.length;
     while (low < high) {
       var mid = (low + high) >> 1;
@@ -273,7 +276,7 @@
   // item in an array, or -1 if the item is not included in the array.
   _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
-    for (i=0, ii=array.length; i<ii; i++) if (array[i] === item) return i;
+    for (i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
   
@@ -453,6 +456,6 @@
   
   /*------------------------- Export for ServerJS ----------------------------*/
   
-  if (!_.isUndefined(exports)) exports = _;
+  if (typeof exports != 'undefined') exports = _;
 
 })();

From a82a01ebfc545c727a5df5cb78b1d01351c4707d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 28 Oct 2009 23:53:40 -0400
Subject: [PATCH 027/533] elaborate underscore initialization so that it works
 seamlessly on CommonJS, as well as in the browser

---
 test/collections.js |  6 +++++-
 underscore.js       | 28 +++++++++++++++++-----------
 2 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 8fb684a07..7f28a7705 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -12,9 +12,13 @@ $(document).ready(function() {
     equals(answer, 2, 'the loop broke in the middle');
     
     var answers = [];
-    _.each([1, 2, 3], function(num) { answers.push(num * this.multiplier);}, {multiplier : 5});
+    _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
     
+    answers = [];
+    _.each("moe", function(letter){ answers.push(letter); });
+    equals(answers.join(', '), 'm, o, e', 'iterates over the letters in strings');
+    
     answers = [];
     _.forEach([1, 2, 3], function(num){ answers.push(num); });
     equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
diff --git a/underscore.js b/underscore.js
index f5b8610c2..8fa0379f4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -8,15 +8,25 @@
 
 (function() {
   
-  var root = (typeof window != 'undefined') ? window : exports;
+  /*------------------------- Baseline setup ---------------------------------*/
   
-  var previousUnderscore = root._;
+  // Are we running in CommonJS or in the browser?
+  var commonJS = (typeof window === 'undefined' && typeof exports !== 'undefined');
   
+  // Save the previous value of the "_" variable.
+  var previousUnderscore = commonJS ? null : window._;
+  
+  // Keep the identity function around for default iterators.
   var identity = function(value) { return value; };
-    
-  var _ = root._ = {};
   
-  _.VERSION = '0.2.0';
+  // Create a safe reference to the Underscore object for the functions below.
+  var _ = {};
+  
+  // Export the Underscore object for CommonJS, assign it globally otherwise.
+  commonJS ? _ = exports : window._ = _;
+  
+  // Current version.
+  _.VERSION = '0.2.1';
       
   /*------------------------ Collection Functions: ---------------------------*/
     
@@ -417,7 +427,7 @@
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
   _.noConflict = function() {
-    root._ = previousUnderscore;
+    if (!commonJS) window._ = previousUnderscore;
     return this;
   };
   
@@ -452,10 +462,6 @@
   _.inject   = _.reduce;
   _.filter   = _.select;
   _.every    = _.all;
-  _.some     = _.any;
-  
-  /*------------------------- Export for ServerJS ----------------------------*/
-  
-  if (typeof exports != 'undefined') exports = _;
+  _.some     = _.any;  
 
 })();

From e381f7b626107165b86b7549b90b32245e934b8a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 00:04:00 -0400
Subject: [PATCH 028/533] updating docs and minified version for 0.3.0

---
 index.html        | 13 +++++++++++--
 underscore-min.js |  2 +-
 underscore.js     |  2 +-
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 88c32d94f..99380fece 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.2.0)</a></td>
+          <td><a href="underscore.js">Development Version (0.3.0)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.2.0)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.3.0)</a></td>
           <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -735,6 +735,15 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.3.0</b><br />
+        Added <a href="http://github.com/dmitryBaranovskiy">Dmitry Baranovskiy</a>'s 
+        comprehensive optimizations, merged in 
+        <a href="http://github.com/kriskowal/">Kris Kowal</a>'s patches to make Underscore 
+        <a href="http://wiki.commonjs.org/wiki/CommonJS">CommonJS</a> and 
+        <a href="http://narwhaljs.org/">Narwhal</a> compliant.
+      </p>
+      
       <p>
         <b class="header">0.2.0</b><br />
         Added <tt>compose</tt> and <tt>lastIndexOf</tt>, renamed <tt>inject</tt> to
diff --git a/underscore-min.js b/underscore-min.js
index 98d0437b5..65150df82 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-(function(){var a=(typeof window!="undefined")?window:exports;var c=a._;var b=a._={};b.VERSION="0.2.0";b.each=function(g,j,d){var k=0;try{if(g.forEach){g.forEach(j,d)}else{if(g.length){for(var h=0;h<g.length;h++){j.call(d,g[h],h)}}else{if(g.each){g.each(function(e){j.call(d,e,k++)})}else{var h=0;for(var n in g){var m=g[n],f=[n,m];f.key=n;f.value=m;j.call(d,f,h++)}}}}}catch(l){if(l!="__break__"){throw l}}return g};b.map=function(g,f,e){if(g&&g.map){return g.map(f,e)}var d=[];b.each(g,function(j,h){d.push(f.call(e,j,h))});return d};b.reduce=function(g,d,f,e){b.each(g,function(j,h){d=f.call(e,d,j,h)});return d};b.detect=function(g,f,e){var d;b.each(g,function(j,h){if(f.call(e,j,h)){d=j;throw"__break__"}});return d};b.select=function(g,f,e){if(g.filter){return g.filter(f,e)}var d=[];b.each(g,function(j,h){if(f.call(e,j,h)){d.push(j)}});return d};b.reject=function(g,f,e){var d=[];b.each(g,function(j,h){if(!f.call(e,j,h)){d.push(j)}});return d};b.all=function(g,f,e){f=f||function(h){return h};if(g.every){return g.every(f,e)}var d=true;b.each(g,function(j,h){d=d&&!!f.call(e,j,h);if(!d){throw"__break__"}});return d};b.any=function(g,f,e){f=f||function(h){return h};if(g.some){return g.some(f,e)}var d=false;b.each(g,function(j,h){if(d=!!f.call(e,j,h)){throw"__break__"}});return d};b.include=function(f,e){if(b.isArray(f)){return b.indexOf(f,e)!=-1}var d=false;b.each(f,function(g){if(g.value===e){d=true;throw"__break__"}});return d};b.invoke=function(e,f){var d=b.toArray(arguments).slice(2);return b.map(e,function(g){return(f?g[f]:g).apply(g,d)})};b.pluck=function(f,e){var d=[];b.each(f,function(g){d.push(g[e])});return d};b.max=function(g,f,e){if(!f&&b.isArray(g)){return Math.max.apply(Math,g)}var d;b.each(g,function(k,h){var j=f?f.call(e,k,h):k;if(d==null||j>=d.computed){d={value:k,computed:j}}});return d.value};b.min=function(g,f,e){if(!f&&b.isArray(g)){return Math.min.apply(Math,g)}var d;b.each(g,function(k,h){var 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\ No newline at end of file
+(function(){var d=(typeof window==="undefined"&&typeof exports!=="undefined");var c=d?null:window._;var a=function(e){return e};var b={};d?b=exports:window._=b;b.VERSION="0.3.0";b.each=function(j,m,f){var n=0;try{if(j.forEach){j.forEach(m,f)}else{if(j.length){for(var k=0,g=j.length;k<g;k++){m.call(f,j[k],k)}}else{if(j.each){j.each(function(e){m.call(f,e,n++)})}else{var k=0;for(var q in j){if(Object.prototype.hasOwnProperty.call(j,q)){var p=j[q],h=[q,p];h.key=q;h.value=p;m.call(f,h,k++)}}}}}}catch(o){if(o!="__break__"){throw o}}return j};b.map=function(h,g,f){if(h&&h.map){return h.map(g,f)}var e=[];b.each(h,function(k,j){e.push(g.call(f,k,j))});return e};b.reduce=function(h,e,g,f){b.each(h,function(k,j){e=g.call(f,e,k,j)});return e};b.detect=function(h,g,f){var e;b.each(h,function(k,j){if(g.call(f,k,j)){e=k;throw"__break__"}});return e};b.select=function(h,g,f){if(h.filter){return h.filter(g,f)}var e=[];b.each(h,function(k,j){g.call(f,k,j)&&e.push(k)});return 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Math.min.apply(Math,h)}var e={computed:Infinity};b.each(h,function(m,j){var k=g?g.call(f,m,j):m;k<e.computed&&(e={value:m,computed:k})});return e.value};b.sortBy=function(g,f,e){return b.pluck(b.map(g,function(j,h){return{value:j,criteria:f.call(e,j,h)}}).sort(function(m,k){var j=m.criteria,h=k.criteria;return j<h?-1:j>h?1:0}),"value")};b.sortedIndex=function(k,j,g){g=g||a;var e=0,h=k.length;while(e<h){var f=(e+h)>>1;g(k[f])<g(j)?e=f+1:h=f}return e};b.toArray=function(e){if(!e){return[]}if(b.isArray(e)){return e}return b.map(e,function(f){return f})};b.size=function(e){return b.toArray(e).length};b.first=function(e){return e[0]};b.last=function(e){return e[e.length-1]};b.compact=function(e){return b.select(e,function(f){return !!f})};b.flatten=function(e){return b.reduce(e,[],function(f,g){if(b.isArray(g)){return f.concat(b.flatten(g))}f.push(g);return f})};b.without=function(f){var e=f.slice.call(arguments,0);return b.select(f,function(g){return !b.include(e,g)})};b.uniq=function(f,e){return b.reduce(f,[],function(g,j,h){if(0==h||(e?b.last(g)!=j:!b.include(g,j))){g.push(j)}return g})};b.intersect=function(f){var e=b.toArray(arguments).slice(1);return b.select(b.uniq(f),function(g){return b.all(e,function(h){return b.indexOf(h,g)>=0})})};b.zip=function(){var e=b.toArray(arguments);var h=b.max(b.pluck(e,"length"));var g=new Array(h);for(var f=0;f<h;f++){g[f]=b.pluck(e,String(f))}return g};b.indexOf=function(f,e){if(f.indexOf){return f.indexOf(e)}for(i=0,l=f.length;i<l;i++){if(f[i]===e){return i}}return -1};b.lastIndexOf=function(g,f){if(g.lastIndexOf){return g.lastIndexOf(f)}var e=g.length;while(e--){if(g[e]===f){return e}}return -1};b.bind=function(g,f){if(!f){return g}var e=b.toArray(arguments).slice(2);return function(){var h=e.concat(b.toArray(arguments));return g.apply(f,h)}};b.bindAll=function(){var e=b.toArray(arguments);var f=e.pop();b.each(e,function(g){f[g]=b.bind(f[g],f)})};b.delay=function(f,g){var 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!!(e&&e.nodeType==1)};b.isArray=function(e){return Object.prototype.toString.call(e)=="[object Array]"};b.isFunction=function(e){return Object.prototype.toString.call(e)=="[object Function]"};b.isUndefined=function(e){return typeof e=="undefined"};b.noConflict=function(){if(!d){window._=c}return this};b.uniqueId=function(e){var f=this._idCounter=(this._idCounter||0)+1;return e?e+f:f};b.template=function(g,f){var e=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+g.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return f?e(f):e};b.forEach=b.each;b.inject=b.reduce;b.filter=b.select;b.every=b.all;b.some=b.any})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 8fa0379f4..9c050fc80 100644
--- a/underscore.js
+++ b/underscore.js
@@ -26,7 +26,7 @@
   commonJS ? _ = exports : window._ = _;
   
   // Current version.
-  _.VERSION = '0.2.1';
+  _.VERSION = '0.3.0';
       
   /*------------------------ Collection Functions: ---------------------------*/
     

From 8e7b8d2dea2ec194f024f47b9eef0f90b6b1a0a5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 10:26:16 -0400
Subject: [PATCH 029/533] started passing in the collection as the third
 argument to _.each iterators (Issue #1)

---
 index.html          | 4 +++-
 test/collections.js | 4 ++++
 underscore.js       | 6 +++---
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 99380fece..f032259a6 100644
--- a/index.html
+++ b/index.html
@@ -171,7 +171,9 @@
         <br />
         Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
-        passed. If <b>list</b> is a JavaScript object, a pair with <b>key</b>
+        passed. Each invocation of <b>iterator</b> is called with three arguments,
+        <i>element</i>, <i>index</i>, and the <b>list</b>. 
+        If <b>list</b> is a JavaScript object, a pair with <b>key</b>
         and <b>value</b> properties will be yielded. If the list has an <b>each</b> 
         method of its own, it will be used instead. Delegates to the native 
         <b>forEach</b> function if it exists.
diff --git a/test/collections.js b/test/collections.js
index 7f28a7705..69fe9ec47 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -29,6 +29,10 @@ $(document).ready(function() {
     _.each(obj, function(pair){ answers.push(pair.key); });
     equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
+    
+    answer = null;
+    _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
+    ok(answer, 'can reference the original collection from inside the iterator');
   });
   
   test('collections: map', function() {
diff --git a/underscore.js b/underscore.js
index 9c050fc80..90cafc284 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,16 +38,16 @@
       if (obj.forEach) {
         obj.forEach(iterator, context);
       } else if (obj.length) {
-        for (var i=0, l = obj.length; i<l; i++) iterator.call(context, obj[i], i);
+        for (var i=0, l = obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else if (obj.each) {
-        obj.each(function(value) { iterator.call(context, value, index++); });
+        obj.each(function(value) { iterator.call(context, value, index++, obj); });
       } else {
         var i = 0;
         for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) {
           var value = obj[key], pair = [key, value];
           pair.key = key;
           pair.value = value;
-          iterator.call(context, pair, i++);
+          iterator.call(context, pair, i++, obj);
         }
       }
     } catch(e) {

From 42637b5880f040e8ce48ff7de758d2274919ffb8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 10:46:53 -0400
Subject: [PATCH 030/533] Issue #2 -- each now calls iterator with (value, key,
 list) when iterating over javascript objects

---
 index.html          |  7 +++----
 test/collections.js |  4 ++--
 underscore.js       | 24 +++++++++++++-----------
 3 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/index.html b/index.html
index f032259a6..33716be85 100644
--- a/index.html
+++ b/index.html
@@ -171,10 +171,9 @@
         <br />
         Iterates over a <b>list</b> of elements, yielding each in turn to an <b>iterator</b>
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
-        passed. Each invocation of <b>iterator</b> is called with three arguments,
-        <i>element</i>, <i>index</i>, and the <b>list</b>. 
-        If <b>list</b> is a JavaScript object, a pair with <b>key</b>
-        and <b>value</b> properties will be yielded. If the list has an <b>each</b> 
+        passed. Each invocation of <b>iterator</b> is called with three arguments:
+        <tt>(element, index, list)</tt>. If <b>list</b> is a JavaScript object, <b>iterator</b>'s
+        arguments will be <tt>(value, key, list)</tt>. If the <b>list</b> has an <b>each</b> 
         method of its own, it will be used instead. Delegates to the native 
         <b>forEach</b> function if it exists.
       </p>
diff --git a/test/collections.js b/test/collections.js
index 69fe9ec47..3ef2ccba3 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -26,7 +26,7 @@ $(document).ready(function() {
     answers = [];
     var obj = {one : 1, two : 2, three : 3};
     obj.constructor.prototype.four = 4;
-    _.each(obj, function(pair){ answers.push(pair.key); });
+    _.each(obj, function(value, key){ answers.push(key); });
     equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
     
@@ -136,7 +136,7 @@ $(document).ready(function() {
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
     
     var numbers = _.toArray({one : 1, two : 2, three : 3});
-    equals(_.pluck(numbers, '0').join(', '), 'one, two, three', 'object flattened into array');
+    equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
   });
   
   test('collections: size', function() {
diff --git a/underscore.js b/underscore.js
index 90cafc284..f9c642062 100644
--- a/underscore.js
+++ b/underscore.js
@@ -42,12 +42,8 @@
       } else if (obj.each) {
         obj.each(function(value) { iterator.call(context, value, index++, obj); });
       } else {
-        var i = 0;
         for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) {
-          var value = obj[key], pair = [key, value];
-          pair.key = key;
-          pair.value = value;
-          iterator.call(context, pair, i++, obj);
+          iterator.call(context, obj[key], key, obj);
         }
       }
     } catch(e) {
@@ -61,8 +57,8 @@
   _.map = function(obj, iterator, context) {
     if (obj && obj.map) return obj.map(iterator, context);
     var results = [];
-    _.each(obj, function(value, index) {
-      results.push(iterator.call(context, value, index));
+    _.each(obj, function(value, index, list) {
+      results.push(iterator.call(context, value, index, list));
     });
     return results;
   };
@@ -137,8 +133,8 @@
   _.include = function(obj, target) {
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
-    _.each(obj, function(pair) {
-      if (found = pair.value === target) {
+    _.each(obj, function(value) {
+      if (found = value === target) {
         throw '__break__';
       }
     });
@@ -361,12 +357,18 @@
   
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
-    return _.pluck(obj, 'key');
+    return _.reduce(obj, [], function(memo, value, key) { 
+      memo.push(key);
+      return memo;
+    });
   };
   
   // Retrieve the values of an object's properties.
   _.values = function(obj) {
-    return _.pluck(obj, 'value');
+    return _.reduce(obj, [], function(memo, value) { 
+      memo.push(value); 
+      return memo; 
+    });
   };
   
   // Extend a given object with all of the properties in a source object.

From 1d8420af003c2b429a5bae7103cff648c591cd5d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 10:53:23 -0400
Subject: [PATCH 031/533] started passing in 'list' as the third argument to
 all the iterators in underscore

---
 underscore.js | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/underscore.js b/underscore.js
index f9c642062..7a3d43646 100644
--- a/underscore.js
+++ b/underscore.js
@@ -66,8 +66,8 @@
   // Reduce builds up a single result from a list of values. Also known as
   // inject, or foldl.
   _.reduce = function(obj, memo, iterator, context) {
-    _.each(obj, function(value, index) {
-      memo = iterator.call(context, memo, value, index);
+    _.each(obj, function(value, index, list) {
+      memo = iterator.call(context, memo, value, index, list);
     });
     return memo;
   };
@@ -75,8 +75,8 @@
   // Return the first value which passes a truth test.
   _.detect = function(obj, iterator, context) {
     var result;
-    _.each(obj, function(value, index) {
-      if (iterator.call(context, value, index)) {
+    _.each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
         result = value;
         throw '__break__';
       }
@@ -89,8 +89,8 @@
   _.select = function(obj, iterator, context) {
     if (obj.filter) return obj.filter(iterator, context);
     var results = [];
-    _.each(obj, function(value, index) {
-      iterator.call(context, value, index) && results.push(value);
+    _.each(obj, function(value, index, list) {
+      iterator.call(context, value, index, list) && results.push(value);
     });
     return results;
   };
@@ -98,8 +98,8 @@
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
-    _.each(obj, function(value, index) {
-      !iterator.call(context, value, index) && results.push(value);
+    _.each(obj, function(value, index, list) {
+      !iterator.call(context, value, index, list) && results.push(value);
     });
     return results;
   };
@@ -110,8 +110,8 @@
     iterator = iterator || identity;
     if (obj.every) return obj.every(iterator, context);
     var result = true;
-    _.each(obj, function(value, index) {
-      if (!(result = result && iterator.call(context, value, index))) throw '__break__';
+    _.each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) throw '__break__';
     });
     return result;
   };
@@ -122,8 +122,8 @@
     iterator = iterator || identity;
     if (obj.some) return obj.some(iterator, context);
     var result = false;
-    _.each(obj, function(value, index) {
-      if (result = iterator.call(context, value, index)) throw '__break__';
+    _.each(obj, function(value, index, list) {
+      if (result = iterator.call(context, value, index, list)) throw '__break__';
     });
     return result;
   };
@@ -160,8 +160,8 @@
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
     var result = {computed : -Infinity};
-    _.each(obj, function(value, index) {
-      var computed = iterator ? iterator.call(context, value, index) : value;
+    _.each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed >= result.computed && (result = {value : value, computed : computed});
     });
     return result.value;
@@ -171,8 +171,8 @@
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
     var result = {computed : Infinity};
-    _.each(obj, function(value, index) {
-      var computed = iterator ? iterator.call(context, value, index) : value;
+    _.each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed < result.computed && (result = {value : value, computed : computed});
     });
     return result.value;
@@ -180,10 +180,10 @@
   
   // Sort the object's values by a criteria produced by an iterator.
   _.sortBy = function(obj, iterator, context) {
-    return _.pluck(_.map(obj, function(value, index) {
+    return _.pluck(_.map(obj, function(value, index, list) {
       return {
         value : value,
-        criteria : iterator.call(context, value, index)
+        criteria : iterator.call(context, value, index, list)
       };
     }).sort(function(left, right) {
       var a = left.criteria, b = right.criteria;

From 9b1da9b2581ecfe549abeb443f81e4feca76bbbc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 11:03:53 -0400
Subject: [PATCH 032/533] optimized keys, values, and pluck

---
 index.html    |  4 ++--
 underscore.js | 16 ++++------------
 2 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/index.html b/index.html
index 33716be85..883780995 100644
--- a/index.html
+++ b/index.html
@@ -298,8 +298,8 @@ _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
       <p id="pluck">
         <b class="header">pluck</b><code>_.pluck(list, propertyName)</code>
         <br />
-        An optimized version of what is perhaps the most common use-case for 
-        <b>map</b>: returning a list of property values.
+        An convenient version of what is perhaps the most common use-case for 
+        <b>map</b>: extracting a list of property values.
       </p>
       <pre>
 var stooges = [{name : 'moe', age : 40}, {name : 'larry', age : 50}, {name : 'curly', age : 60}];
diff --git a/underscore.js b/underscore.js
index 7a3d43646..444ee010f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -149,11 +149,9 @@
     });
   };
   
-  // Optimized version of a common use case of map: fetching a property.
+  // Convenience version of a common use case of map: fetching a property.
   _.pluck = function(obj, key) {
-    var results = [];
-    _.each(obj, function(value){ results.push(value[key]); });
-    return results;
+    return _.map(obj, function(value){ return value[key]; });
   };
   
   // Return the maximum item or (item-based computation).
@@ -357,18 +355,12 @@
   
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
-    return _.reduce(obj, [], function(memo, value, key) { 
-      memo.push(key);
-      return memo;
-    });
+    return _.map(obj, function(value, key){ return key; });
   };
   
   // Retrieve the values of an object's properties.
   _.values = function(obj) {
-    return _.reduce(obj, [], function(memo, value) { 
-      memo.push(value); 
-      return memo; 
-    });
+    return _.map(obj, identity);
   };
   
   // Extend a given object with all of the properties in a source object.

From 4d09a85bae8691876c4c767451449daac88eac82 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 11:12:41 -0400
Subject: [PATCH 033/533] version 0.3.1 is on the books

---
 index.html        | 12 ++++++++++--
 underscore-min.js |  2 +-
 underscore.js     |  2 +-
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 883780995..74f4b1662 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.3.0)</a></td>
+          <td><a href="underscore.js">Development Version (0.3.1)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.3.0)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.3.1)</a></td>
           <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -736,6 +736,14 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.3.1</b><br />
+        All iterators are now passed in the original collection as their third
+        argument, the same as JavaScript 1.6's <b>forEach</b>. Iterating over
+        objects is now called with <tt>(value, key, collection)</tt>, for details
+        see <a href="#each">_.each</a>.
+      </p>
+      
       <p>
         <b class="header">0.3.0</b><br />
         Added <a href="http://github.com/dmitryBaranovskiy">Dmitry Baranovskiy</a>'s 
diff --git a/underscore-min.js b/underscore-min.js
index 65150df82..56898bab1 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-(function(){var d=(typeof window==="undefined"&&typeof exports!=="undefined");var c=d?null:window._;var a=function(e){return e};var b={};d?b=exports:window._=b;b.VERSION="0.3.0";b.each=function(j,m,f){var n=0;try{if(j.forEach){j.forEach(m,f)}else{if(j.length){for(var k=0,g=j.length;k<g;k++){m.call(f,j[k],k)}}else{if(j.each){j.each(function(e){m.call(f,e,n++)})}else{var k=0;for(var q in j){if(Object.prototype.hasOwnProperty.call(j,q)){var p=j[q],h=[q,p];h.key=q;h.value=p;m.call(f,h,k++)}}}}}}catch(o){if(o!="__break__"){throw o}}return j};b.map=function(h,g,f){if(h&&h.map){return h.map(g,f)}var e=[];b.each(h,function(k,j){e.push(g.call(f,k,j))});return e};b.reduce=function(h,e,g,f){b.each(h,function(k,j){e=g.call(f,e,k,j)});return e};b.detect=function(h,g,f){var e;b.each(h,function(k,j){if(g.call(f,k,j)){e=k;throw"__break__"}});return e};b.select=function(h,g,f){if(h.filter){return h.filter(g,f)}var e=[];b.each(h,function(k,j){g.call(f,k,j)&&e.push(k)});return 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\ No newline at end of file
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diff --git a/underscore.js b/underscore.js
index 444ee010f..45b0ddddb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -26,7 +26,7 @@
   commonJS ? _ = exports : window._ = _;
   
   // Current version.
-  _.VERSION = '0.3.0';
+  _.VERSION = '0.3.1';
       
   /*------------------------ Collection Functions: ---------------------------*/
     

From d2d1285e26a206278ae9f711a589b5e49f54c60e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 14:45:56 -0400
Subject: [PATCH 034/533] version 0.3.2, with 'identity', and Rhino support

---
 index.html        | 29 +++++++++++++++++++++++++----
 underscore-min.js |  2 +-
 underscore.js     | 32 +++++++++++++++++---------------
 3 files changed, 43 insertions(+), 20 deletions(-)

diff --git a/index.html b/index.html
index 74f4b1662..ebbf82dbc 100644
--- a/index.html
+++ b/index.html
@@ -81,7 +81,7 @@
     </p>
     
     <p>
-      Underscore provides 44-odd functions that support both the usual 
+      Underscore provides 45-odd functions that support both the usual 
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash; 
       as well as more specialized helpers: function binding, javascript 
       templating, deep equality testing, and so on. It delegates to built-in 
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.3.1)</a></td>
+          <td><a href="underscore.js">Development Version (0.3.2)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.3.1)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.3.2)</a></td>
           <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -158,7 +158,8 @@
       <b>Utility</b>
       <br />
       <span class="methods"><a href="#noConflict">noConflict</a>,
-      <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
+      <a href="#identity">identity</a>, <a href="#uniqueId">uniqueId</a>, 
+      <a href="#template">template</a></span>
     </p>
     
     <div id="documentation">
@@ -700,6 +701,19 @@ _.isUndefined(window.missingVariable);
       <pre>
 var underscore = _.noConflict();</pre>
 
+      <p id="identity">
+        <b class="header">identity</b><code>_.identity(value)</code>
+        <br />
+        Returns the same value that is used as the argument. In math: 
+        <tt>f(x) = x</tt><br />
+        This function looks useless, but is used throughout Underscore as 
+        a default iterator.
+      </p>
+      <pre>
+var moe = {name : 'moe'};
+moe === _.identity(moe);
+=> true</pre>
+
       <p id="uniqueId">
         <b class="header">uniqueId</b><code>_.uniqueId([prefix])</code>
         <br />
@@ -736,6 +750,13 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.3.2</b><br />
+        Now runs on stock <a href="http://www.mozilla.org/rhino/">Rhino</a> 
+        interpreters with: <tt>load("underscore.js")</tt>.
+        Added <a href="#identity"><tt>identity</tt></a> as a utility function.
+      </p>
+      
       <p>
         <b class="header">0.3.1</b><br />
         All iterators are now passed in the original collection as their third
diff --git a/underscore-min.js b/underscore-min.js
index 56898bab1..ee3af5177 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
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+(function(){var a=this;var c=a._;var b=a._={};if(typeof exports!=="undefined"){b=exports}b.VERSION="0.3.2";b.each=function(n,k,j){var f=0;try{if(n.forEach){n.forEach(k,j)}else{if(n.length){for(var h=0,d=n.length;h<d;h++){k.call(j,n[h],h,n)}}else{if(n.each){n.each(function(e){k.call(j,e,f++,n)})}else{for(var g in n){if(Object.prototype.hasOwnProperty.call(n,g)){k.call(j,n[g],g,n)}}}}}}catch(m){if(m!="__break__"){throw m}}return n};b.map=function(g,f,e){if(g&&g.map){return g.map(f,e)}var d=[];b.each(g,function(k,h,j){d.push(f.call(e,k,h,j))});return d};b.reduce=function(g,d,f,e){b.each(g,function(k,h,j){d=f.call(e,d,k,h,j)});return d};b.detect=function(g,f,e){var d;b.each(g,function(k,h,j){if(f.call(e,k,h,j)){d=k;throw"__break__"}});return d};b.select=function(g,f,e){if(g.filter){return g.filter(f,e)}var d=[];b.each(g,function(k,h,j){f.call(e,k,h,j)&&d.push(k)});return d};b.reject=function(g,f,e){var d=[];b.each(g,function(k,h,j){!f.call(e,k,h,j)&&d.push(k)});return 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j=f?f.call(e,m,h,k):m;j<d.computed&&(d={value:m,computed:j})});return d.value};b.sortBy=function(f,e,d){return b.pluck(b.map(f,function(j,g,h){return{value:j,criteria:e.call(d,j,g,h)}}).sort(function(k,j){var h=k.criteria,g=j.criteria;return h<g?-1:h>g?1:0}),"value")};b.sortedIndex=function(j,h,f){f=f||b.identity;var d=0,g=j.length;while(d<g){var e=(d+g)>>1;f(j[e])<f(h)?d=e+1:g=e}return d};b.toArray=function(d){if(!d){return[]}if(b.isArray(d)){return d}return b.map(d,function(e){return e})};b.size=function(d){return b.toArray(d).length};b.first=function(d){return d[0]};b.last=function(d){return d[d.length-1]};b.compact=function(d){return b.select(d,function(e){return !!e})};b.flatten=function(d){return b.reduce(d,[],function(e,f){if(b.isArray(f)){return e.concat(b.flatten(f))}e.push(f);return e})};b.without=function(e){var d=e.slice.call(arguments,0);return b.select(e,function(f){return !b.include(d,f)})};b.uniq=function(e,d){return b.reduce(e,[],function(f,h,g){if(0==g||(d?b.last(f)!=h:!b.include(f,h))){f.push(h)}return f})};b.intersect=function(e){var d=b.toArray(arguments).slice(1);return b.select(b.uniq(e),function(f){return b.all(d,function(g){return b.indexOf(g,f)>=0})})};b.zip=function(){var d=b.toArray(arguments);var g=b.max(b.pluck(d,"length"));var f=new Array(g);for(var e=0;e<g;e++){f[e]=b.pluck(d,String(e))}return f};b.indexOf=function(e,d){if(e.indexOf){return e.indexOf(d)}for(i=0,l=e.length;i<l;i++){if(e[i]===d){return i}}return -1};b.lastIndexOf=function(f,e){if(f.lastIndexOf){return f.lastIndexOf(e)}var d=f.length;while(d--){if(f[d]===e){return d}}return -1};b.bind=function(f,e){if(!e){return f}var d=b.toArray(arguments).slice(2);return function(){var g=d.concat(b.toArray(arguments));return f.apply(e,g)}};b.bindAll=function(){var d=b.toArray(arguments);var e=d.pop();b.each(d,function(f){e[f]=b.bind(e[f],e)})};b.delay=function(e,f){var d=b.toArray(arguments).slice(2);return setTimeout(function(){return e.apply(e,d)},f)};b.defer=function(d){return b.delay.apply(b,[d,1].concat(b.toArray(arguments).slice(1)))};b.wrap=function(d,e){return function(){var f=[d].concat(b.toArray(arguments));return e.apply(e,f)}};b.compose=function(){var d=b.toArray(arguments);return function(){for(var e=d.length-1;e>=0;e--){arguments=[d[e].apply(this,arguments)]}return arguments[0]}};b.keys=function(d){return b.map(d,function(f,e){return e})};b.values=function(d){return b.map(d,b.identity)};b.extend=function(d,f){for(var e in f){d[e]=f[e]}return d};b.clone=function(d){return b.extend({},d)};b.isEqual=function(e,d){if(e===d){return true}var h=typeof(e),k=typeof(d);if(h!=k){return false}if(e==d){return true}if(e.isEqual){return e.isEqual(d)}if(h!=="object"){return false}var f=b.keys(e),j=b.keys(d);if(f.length!=j.length){return false}for(var g in e){if(!b.isEqual(e[g],d[g])){return false}}return true};b.isElement=function(d){return !!(d&&d.nodeType==1)};b.isArray=function(d){return Object.prototype.toString.call(d)=="[object Array]"};b.isFunction=function(d){return Object.prototype.toString.call(d)=="[object Function]"};b.isUndefined=function(d){return typeof d=="undefined"};b.noConflict=function(){a._=c;return this};b.identity=function(d){return d};b.uniqueId=function(d){var e=this._idCounter=(this._idCounter||0)+1;return d?d+e:e};b.template=function(f,e){var d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+f.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return e?d(e):d};b.forEach=b.each;b.inject=b.reduce;b.filter=b.select;b.every=b.all;b.some=b.any})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 45b0ddddb..fee281f8d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -10,23 +10,20 @@
   
   /*------------------------- Baseline setup ---------------------------------*/
   
-  // Are we running in CommonJS or in the browser?
-  var commonJS = (typeof window === 'undefined' && typeof exports !== 'undefined');
+  // Establish the root object, "window" in the browser, or "global" on the server.
+  var root = this;
   
   // Save the previous value of the "_" variable.
-  var previousUnderscore = commonJS ? null : window._;
-  
-  // Keep the identity function around for default iterators.
-  var identity = function(value) { return value; };
+  var previousUnderscore = root._;
   
   // Create a safe reference to the Underscore object for the functions below.
-  var _ = {};
+  var _ = root._ = {};
   
-  // Export the Underscore object for CommonJS, assign it globally otherwise.
-  commonJS ? _ = exports : window._ = _;
+  // Export the Underscore object for CommonJS.
+  if (typeof exports !== 'undefined') _ = exports;
   
   // Current version.
-  _.VERSION = '0.3.1';
+  _.VERSION = '0.3.2';
       
   /*------------------------ Collection Functions: ---------------------------*/
     
@@ -107,7 +104,7 @@
   // Determine whether all of the elements match a truth test. Delegate to
   // JavaScript 1.6's every(), if it is present.
   _.all = function(obj, iterator, context) {
-    iterator = iterator || identity;
+    iterator = iterator || _.identity;
     if (obj.every) return obj.every(iterator, context);
     var result = true;
     _.each(obj, function(value, index, list) {
@@ -119,7 +116,7 @@
   // Determine if at least one element in the object matches a truth test. Use
   // JavaScript 1.6's some(), if it exists.
   _.any = function(obj, iterator, context) {
-    iterator = iterator || identity;
+    iterator = iterator || _.identity;
     if (obj.some) return obj.some(iterator, context);
     var result = false;
     _.each(obj, function(value, index, list) {
@@ -192,7 +189,7 @@
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
   _.sortedIndex = function(array, obj, iterator) {
-    iterator = iterator || identity;
+    iterator = iterator || _.identity;
     var low = 0, high = array.length;
     while (low < high) {
       var mid = (low + high) >> 1;
@@ -360,7 +357,7 @@
   
   // Retrieve the values of an object's properties.
   _.values = function(obj) {
-    return _.map(obj, identity);
+    return _.map(obj, _.identity);
   };
   
   // Extend a given object with all of the properties in a source object.
@@ -421,10 +418,15 @@
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
   _.noConflict = function() {
-    if (!commonJS) window._ = previousUnderscore;
+    root._ = previousUnderscore;
     return this;
   };
   
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) { 
+    return value;
+  };
+  
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
   _.uniqueId = function(prefix) {

From e9bc165bc33f086ea99fe44db83e228f44481c71 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 14:50:48 -0400
Subject: [PATCH 035/533] adding an identity test (silly, I know) to utility
 tests

---
 test/utility.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/utility.js b/test/utility.js
index af9680bb5..e40755be5 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -9,6 +9,11 @@ $(document).ready(function() {
     equals(intersection.join(', '), '1, 2', 'but the intersection function still works');
     window._ = underscore;
   });
+  
+  test("utility: identity", function() {
+    var moe = {name : 'moe'};
+    equals(_.identity(moe), moe, 'moe is the same has his identity');
+  });
     
   test("utility: uniqueId", function() {
     var ids = [], i = 0;

From eca085a9d93deab4cc58e8ab7f9304f26f3fe84f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 29 Oct 2009 14:58:50 -0400
Subject: [PATCH 036/533] typo

---
 test/utility.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index e40755be5..b58844294 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -12,7 +12,7 @@ $(document).ready(function() {
   
   test("utility: identity", function() {
     var moe = {name : 'moe'};
-    equals(_.identity(moe), moe, 'moe is the same has his identity');
+    equals(_.identity(moe), moe, 'moe is the same as his identity');
   });
     
   test("utility: uniqueId", function() {

From cb38c6ae6358693725f816e9152034f236d08755 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 30 Oct 2009 09:40:19 -0400
Subject: [PATCH 037/533] adding a reduceRight (it's in JS 1.8), and aliasing
 foldl and foldr

---
 index.html          | 27 ++++++++++++++++++++++-----
 test/collections.js |  9 +++++++++
 underscore.js       | 18 ++++++++++++++++--
 3 files changed, 47 insertions(+), 7 deletions(-)

diff --git a/index.html b/index.html
index ebbf82dbc..9850daf9d 100644
--- a/index.html
+++ b/index.html
@@ -123,10 +123,14 @@
       <b>Collections</b>
       <br /> 
       <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>, 
-      <a href="#reduce">reduce</a>, <a href="#detect">detect</a>, <a href="#select">select</a>, <a href="#reject">reject</a>, <a href="#all">all</a>, 
-      <a href="#any">any</a>, <a href="#include">include</a>, <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>, <a href="#max">max</a>, 
-      <a href="#min">min</a>, <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>, <a href="#toArray">toArray</a>, 
-      <a href="#size">size</a></span>
+      <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>, 
+      <a href="#detect">detect</a>, <a href="#select">select</a>, 
+      <a href="#reject">reject</a>, <a href="#all">all</a>, 
+      <a href="#any">any</a>, <a href="#include">include</a>, 
+      <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>, 
+      <a href="#max">max</a>, <a href="#min">min</a>, 
+      <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>, 
+      <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
     
     <p>
@@ -195,7 +199,7 @@ _.map([1, 2, 3], function(num){ return num * 3 });
 
       <p id="reduce">
         <b class="header">reduce</b><code>_.reduce(list, memo, iterator, [context])</code>
-        <span class="alias">Alias: <b>inject</b></span>
+        <span class="alias">Aliases: <b>inject, foldl</b></span>
         <br />
         Also known as <b>inject</b> and <b>foldl</b>, <b>reduce</b> boils down a 
         <b>list</b> of values into a single value. <b>Memo</b> is the initial state
@@ -205,6 +209,19 @@ _.map([1, 2, 3], function(num){ return num * 3 });
       <pre>
 var sum = _.reduce([1, 2, 3], 0, function(memo, num){ return memo + num });
 =&gt; 6
+</pre>
+
+      <p id="reduceRight">
+        <b class="header">reduceRight</b><code>_.reduceRight(list, memo, iterator, [context])</code>
+        <span class="alias">Alias: <b>foldr</b></span>
+        <br />
+        The right-associative version of <b>reduce</b>. Delegates to the 
+        JavaScript 1.8 version of <b>reduceRight</b>, if it exists.
+      </p>
+      <pre>
+var list = [[0, 1], [2, 3], [4, 5]];
+var flat = _.reduceRight(list, [], function(a, b) { return a.concat(b); });
+=&gt; [4, 5, 2, 3, 0, 1]
 </pre>
 
       <p id="detect">
diff --git a/test/collections.js b/test/collections.js
index 3ef2ccba3..a55d02e88 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -47,10 +47,19 @@ $(document).ready(function() {
     var sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'can sum up an array');
     
+    var context = {multiplier : 3};
+    sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num * this.multiplier; }, context);
+    equals(sum, 18, 'can reduce with a context object');
+    
     sum = _.inject([1, 2, 3], 0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'aliased as "inject"');
   });
   
+  test('collections: reduceRight', function() {
+    var list = _.foldr([1, 2, 3], '', function(memo, num){ return memo + num; });
+    equals(list, '321', 'can perform right folds');
+  });
+  
   test('collections: detect', function() {
     var result = _.detect([1, 2, 3], function(num){ return num * 2 == 4; });
     equals(result, 2, 'found the first "2" and broke the loop');
diff --git a/underscore.js b/underscore.js
index fee281f8d..9b2dfb84b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -61,14 +61,26 @@
   };
   
   // Reduce builds up a single result from a list of values. Also known as
-  // inject, or foldl.
+  // inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
   _.reduce = function(obj, memo, iterator, context) {
+    if (obj && obj.reduce) return obj.reduce(_.bind(iterator, context), memo);
     _.each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
     return memo;
   };
   
+  // The right-associative version of reduce, also known as foldr. Uses 
+  // JavaScript 1.8's version of reduceRight, if available.
+  _.reduceRight = function(obj, memo, iterator, context) {
+    if (obj && obj.reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+    var reversed = _.clone(_.toArray(obj)).reverse();
+    _.each(reversed, function(value, index) {
+      memo = iterator.call(context, memo, value, index, obj);
+    });
+    return memo;
+  };
+  
   // Return the first value which passes a truth test.
   _.detect = function(obj, iterator, context) {
     var result;
@@ -368,6 +380,7 @@
   
   // Create a (shallow-cloned) duplicate of an object.
   _.clone = function(obj) {
+    if (_.isArray(obj)) return obj.slice(0);
     return _.extend({}, obj);
   };
   
@@ -455,7 +468,8 @@
   /*------------------------------- Aliases ----------------------------------*/
 
   _.forEach  = _.each;
-  _.inject   = _.reduce;
+  _.foldl    = _.inject       = _.reduce;
+  _.foldr    = _.reduceRight;
   _.filter   = _.select;
   _.every    = _.all;
   _.some     = _.any;  

From d4a5ed6a733c75c6b1813e17a5ff5063ac087db7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 31 Oct 2009 08:26:03 -0400
Subject: [PATCH 038/533] version 0.3.3 is on the books -- with reduceRight

---
 index.html        | 18 +++++++++++++-----
 underscore-min.js |  2 +-
 underscore.js     |  2 +-
 3 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/index.html b/index.html
index 9850daf9d..a25d68a86 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.3.2)</a></td>
+          <td><a href="underscore.js">Development Version (0.3.3)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.3.2)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.3.3)</a></td>
           <td><i>4kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -216,7 +216,9 @@ var sum = _.reduce([1, 2, 3], 0, function(memo, num){ return memo + num });
         <span class="alias">Alias: <b>foldr</b></span>
         <br />
         The right-associative version of <b>reduce</b>. Delegates to the 
-        JavaScript 1.8 version of <b>reduceRight</b>, if it exists.
+        JavaScript 1.8 version of <b>reduceRight</b>, if it exists. <b>Foldr</b>
+        is not as useful in JavaScript as it would be in a language with lazy
+        evaluation.
       </p>
       <pre>
 var list = [[0, 1], [2, 3], [4, 5]];
@@ -229,8 +231,8 @@ var flat = _.reduceRight(list, [], function(a, b) { return a.concat(b); });
         <br />
         Looks through each value in the <b>list</b>, returning the first one that 
         passes a truth test (<b>iterator</b>). The function returns as 
-        soon as it finds the first acceptable element, and doesn't continue to 
-        traverse the list.
+        soon as it finds an acceptable element, and doesn't traverse the
+        entire list.
       </p>
       <pre>
 var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
@@ -767,6 +769,12 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.3.3</b><br />
+        Added the JavaScript 1.8 function <tt>reduceRight</tt>. Aliased it
+        as <tt>foldr</tt>, and aliased <tt>reduce</tt> as <tt>foldl</tt>.
+      </p>
+      
       <p>
         <b class="header">0.3.2</b><br />
         Now runs on stock <a href="http://www.mozilla.org/rhino/">Rhino</a> 
diff --git a/underscore-min.js b/underscore-min.js
index ee3af5177..ec7f39785 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-(function(){var a=this;var c=a._;var b=a._={};if(typeof exports!=="undefined"){b=exports}b.VERSION="0.3.2";b.each=function(n,k,j){var f=0;try{if(n.forEach){n.forEach(k,j)}else{if(n.length){for(var h=0,d=n.length;h<d;h++){k.call(j,n[h],h,n)}}else{if(n.each){n.each(function(e){k.call(j,e,f++,n)})}else{for(var g in n){if(Object.prototype.hasOwnProperty.call(n,g)){k.call(j,n[g],g,n)}}}}}}catch(m){if(m!="__break__"){throw m}}return n};b.map=function(g,f,e){if(g&&g.map){return g.map(f,e)}var d=[];b.each(g,function(k,h,j){d.push(f.call(e,k,h,j))});return d};b.reduce=function(g,d,f,e){b.each(g,function(k,h,j){d=f.call(e,d,k,h,j)});return d};b.detect=function(g,f,e){var d;b.each(g,function(k,h,j){if(f.call(e,k,h,j)){d=k;throw"__break__"}});return d};b.select=function(g,f,e){if(g.filter){return g.filter(f,e)}var d=[];b.each(g,function(k,h,j){f.call(e,k,h,j)&&d.push(k)});return d};b.reject=function(g,f,e){var d=[];b.each(g,function(k,h,j){!f.call(e,k,h,j)&&d.push(k)});return 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\ No newline at end of file
+(function(){var a=this;var c=a._;var b=a._={};if(typeof exports!=="undefined"){b=exports}b.VERSION="0.3.3";b.each=function(n,k,j){var f=0;try{if(n.forEach){n.forEach(k,j)}else{if(n.length){for(var h=0,d=n.length;h<d;h++){k.call(j,n[h],h,n)}}else{if(n.each){n.each(function(e){k.call(j,e,f++,n)})}else{for(var g in n){if(Object.prototype.hasOwnProperty.call(n,g)){k.call(j,n[g],g,n)}}}}}}catch(m){if(m!="__break__"){throw m}}return n};b.map=function(g,f,e){if(g&&g.map){return g.map(f,e)}var d=[];b.each(g,function(k,h,j){d.push(f.call(e,k,h,j))});return d};b.reduce=function(g,d,f,e){if(g&&g.reduce){return g.reduce(b.bind(f,e),d)}b.each(g,function(k,h,j){d=f.call(e,d,k,h,j)});return d};b.reduceRight=function(g,d,f,e){if(g&&g.reduceRight){return g.reduceRight(b.bind(f,e),d)}var h=b.clone(b.toArray(g)).reverse();b.each(h,function(k,j){d=f.call(e,d,k,j,g)});return d};b.detect=function(g,f,e){var d;b.each(g,function(k,h,j){if(f.call(e,k,h,j)){d=k;throw"__break__"}});return 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b.reduce(d,[],function(e,f){if(b.isArray(f)){return e.concat(b.flatten(f))}e.push(f);return e})};b.without=function(e){var d=e.slice.call(arguments,0);return b.select(e,function(f){return !b.include(d,f)})};b.uniq=function(e,d){return b.reduce(e,[],function(f,h,g){if(0==g||(d?b.last(f)!=h:!b.include(f,h))){f.push(h)}return f})};b.intersect=function(e){var d=b.toArray(arguments).slice(1);return b.select(b.uniq(e),function(f){return b.all(d,function(g){return b.indexOf(g,f)>=0})})};b.zip=function(){var d=b.toArray(arguments);var g=b.max(b.pluck(d,"length"));var f=new Array(g);for(var e=0;e<g;e++){f[e]=b.pluck(d,String(e))}return f};b.indexOf=function(e,d){if(e.indexOf){return e.indexOf(d)}for(i=0,l=e.length;i<l;i++){if(e[i]===d){return i}}return -1};b.lastIndexOf=function(f,e){if(f.lastIndexOf){return f.lastIndexOf(e)}var d=f.length;while(d--){if(f[d]===e){return d}}return -1};b.bind=function(f,e){if(!e){return f}var d=b.toArray(arguments).slice(2);return function(){var g=d.concat(b.toArray(arguments));return f.apply(e,g)}};b.bindAll=function(){var d=b.toArray(arguments);var e=d.pop();b.each(d,function(f){e[f]=b.bind(e[f],e)})};b.delay=function(e,f){var d=b.toArray(arguments).slice(2);return setTimeout(function(){return e.apply(e,d)},f)};b.defer=function(d){return b.delay.apply(b,[d,1].concat(b.toArray(arguments).slice(1)))};b.wrap=function(d,e){return function(){var f=[d].concat(b.toArray(arguments));return e.apply(e,f)}};b.compose=function(){var d=b.toArray(arguments);return function(){for(var e=d.length-1;e>=0;e--){arguments=[d[e].apply(this,arguments)]}return arguments[0]}};b.keys=function(d){return b.map(d,function(f,e){return e})};b.values=function(d){return b.map(d,b.identity)};b.extend=function(d,f){for(var e in f){d[e]=f[e]}return d};b.clone=function(d){if(b.isArray(d)){return d.slice(0)}return b.extend({},d)};b.isEqual=function(e,d){if(e===d){return true}var h=typeof(e),k=typeof(d);if(h!=k){return false}if(e==d){return true}if(e.isEqual){return e.isEqual(d)}if(h!=="object"){return false}var f=b.keys(e),j=b.keys(d);if(f.length!=j.length){return false}for(var g in e){if(!b.isEqual(e[g],d[g])){return false}}return true};b.isElement=function(d){return !!(d&&d.nodeType==1)};b.isArray=function(d){return Object.prototype.toString.call(d)=="[object Array]"};b.isFunction=function(d){return Object.prototype.toString.call(d)=="[object Function]"};b.isUndefined=function(d){return typeof d=="undefined"};b.noConflict=function(){a._=c;return this};b.identity=function(d){return d};b.uniqueId=function(d){var e=this._idCounter=(this._idCounter||0)+1;return d?d+e:e};b.template=function(f,e){var d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+f.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return e?d(e):d};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 9b2dfb84b..e198f6a4b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -23,7 +23,7 @@
   if (typeof exports !== 'undefined') _ = exports;
   
   // Current version.
-  _.VERSION = '0.3.2';
+  _.VERSION = '0.3.3';
       
   /*------------------------ Collection Functions: ---------------------------*/
     

From 51298c78ca730dd05f3b76c213d5a6d88c229a5e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 31 Oct 2009 08:30:49 -0400
Subject: [PATCH 039/533] looks like gzipped, it's only 1.9k

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index a25d68a86..256824685 100644
--- a/index.html
+++ b/index.html
@@ -112,7 +112,7 @@
         </tr>
         <tr>
           <td><a href="underscore-min.js">Production Version (0.3.3)</a></td>
-          <td><i>4kb, Packed and Gzipped</i></td>
+          <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
     </p>

From 4f0afda61cae565fbdccb8f20493b401b4e4521d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 12:39:59 -0500
Subject: [PATCH 040/533] adding OO-style object wrapping (thanks macournoyer)
 -- now you can to _(array).each();

---
 test/arrays.js      |  2 ++
 test/collections.js |  9 ++++++++-
 test/functions.js   |  9 ++++++---
 test/objects.js     |  1 +
 test/speed.js       |  6 ++++++
 underscore.js       | 32 +++++++++++++++++++++++++++-----
 6 files changed, 50 insertions(+), 9 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index dd54c7266..d069d9d62 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -4,6 +4,7 @@ $(document).ready(function() {
     
   test("arrays: first", function() {
     equals(_.first([1,2,3]), 1, 'can pull out the first element of an array');
+    equals(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"');
   });
   
   test("arrays: last", function() {
@@ -35,6 +36,7 @@ $(document).ready(function() {
   test("arrays: intersect", function() {
     var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho'];
     equals(_.intersect(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
+    equals(_(stooges).intersect(leaders).join(''), 'moe', 'can perform an OO-style intersection');
   });
   
   test('arrays: zip', function() {
diff --git a/test/collections.js b/test/collections.js
index a55d02e88..1a6f5992d 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -32,7 +32,7 @@ $(document).ready(function() {
     
     answer = null;
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
-    ok(answer, 'can reference the original collection from inside the iterator');
+    ok(answer, 'can reference the original collection from inside the iterator');    
   });
   
   test('collections: map', function() {
@@ -41,6 +41,9 @@ $(document).ready(function() {
     
     var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
     equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
+    
+    var doubled = _([1, 2, 3]).map(function(num){ return num * 2; });
+    equals(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
   });
   
   test('collections: reduce', function() {
@@ -53,6 +56,9 @@ $(document).ready(function() {
     
     sum = _.inject([1, 2, 3], 0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'aliased as "inject"');
+    
+    sum = _([1, 2, 3]).reduce(0, function(sum, num){ return sum + num; });
+    equals(sum, 6, 'OO-style reduce');
   });
   
   test('collections: reduceRight', function() {
@@ -100,6 +106,7 @@ $(document).ready(function() {
     ok(_.include([1,2,3], 2), 'two is in the array');
     ok(!_.include([1,3,9], 2), 'two is not in the array');
     ok(_.include({moe:1, larry:3, curly:9}, 3), '_.include on objects checks their values');
+    ok(_([1,2,3]).include(2), 'OO-style include');
   });
   
   test('collections: invoke', function() {
diff --git a/test/functions.js b/test/functions.js
index 9e401e4c7..80c5cb963 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -8,12 +8,15 @@ $(document).ready(function() {
     var bound = _.bind(func, context);
     equals(bound(), 'name: moe', 'can bind a function to a context');
     
-    var func = function(salutation, name) { return salutation + ': ' + name; };
+    bound = _(func).bind(context);
+    equals(bound(), 'name: moe', 'can do OO-style binding');
+    
+    func = function(salutation, name) { return salutation + ': ' + name; };
     func = _.bind(func, this, 'hello');
     equals(func('moe'), 'hello: moe', 'the function was partially applied in advance');
     
-    func = _.bind(func, this, 'curly');
-    equals(func(), 'hello: curly', 'the function was completely applied in advance');
+    var func = _.bind(func, this, 'curly');
+    equals(func(), 'hello: curly', 'the function was completely applied in advance');    
   });
   
   test("functions: bindAll", function() {
diff --git a/test/objects.js b/test/objects.js
index eb73245d8..6a20e8d9a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -33,6 +33,7 @@ $(document).ready(function() {
     var clone = {name : 'moe', lucky : [13, 27, 34]};
     ok(moe != clone, 'basic equality between objects is false');
     ok(_.isEqual(moe, clone), 'deep equality is true');
+    ok(_(moe).isEqual(clone), 'OO-style deep equality works');
   });
   
   test("objects: isElement", function() {
diff --git a/test/speed.js b/test/speed.js
index 5258fb58f..ce4f878d6 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -11,6 +11,12 @@
     return timesTwo;
   });
   
+  JSLitmus.test('_(list).each()', function() {
+    var timesTwo = [];
+    _(numbers).each(function(num){ timesTwo.push(num * 2); });
+    return timesTwo;
+  });
+  
   JSLitmus.test('_.map()', function() {
     return _.map(objects, function(obj){ return obj.num; });
   });
diff --git a/underscore.js b/underscore.js
index e198f6a4b..8f045b9ab 100644
--- a/underscore.js
+++ b/underscore.js
@@ -16,15 +16,20 @@
   // Save the previous value of the "_" variable.
   var previousUnderscore = root._;
   
-  // Create a safe reference to the Underscore object for the functions below.
-  var _ = root._ = {};
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the 
+  // underscore functions.
+  var wrapper = function(obj) { this.wrapped = obj; };
+  
+  // Create a safe reference to the Underscore object for reference below.
+  var _ = root._ = function(obj) { return new wrapper(obj); };
   
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') _ = exports;
   
   // Current version.
-  _.VERSION = '0.3.3';
-      
+  _.VERSION = '0.3.3';  
+  
   /*------------------------ Collection Functions: ---------------------------*/
     
   // The cornerstone, an each implementation.
@@ -447,6 +452,13 @@
     return prefix ? prefix + id : id;
   };
   
+  // Return a sorted list of the function names available in Underscore.
+  _.functions = function() {
+    var functions = [];
+    for (var key in _) if (Object.prototype.hasOwnProperty.call(_, key)) functions.push(key);
+    return _.without(functions, 'VERSION', 'prototype', 'noConflict');
+  };
+  
   // JavaScript templating a-la ERB, pilfered from John Resig's 
   // "Secrets of the JavaScript Ninja", page 83.
   _.template = function(str, data) {
@@ -472,6 +484,16 @@
   _.foldr    = _.reduceRight;
   _.filter   = _.select;
   _.every    = _.all;
-  _.some     = _.any;  
+  _.some     = _.any;
+  _.methods  = _.functions;
+  
+  /*------------------- Add all Functions to the Wrapper: --------------------*/
+
+  _.each(_.functions(), function(name) {
+    wrapper.prototype[name] = function() {
+      Array.prototype.unshift.call(arguments, this.wrapped);
+      return _[name].apply(_, arguments);
+    };
+  });
 
 })();

From ed37b9df4953d554d3f72dd3b0d9df8fb1efad91 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 14:29:40 -0500
Subject: [PATCH 041/533] 0.4.0 is out, with OOP-style and chaining

---
 index.html        | 66 ++++++++++++++++++++++++++++++++++++++++++++---
 test/chaining.js  | 35 +++++++++++++++++++++++++
 test/test.html    |  1 +
 test/utility.js   | 12 +++++++++
 underscore-min.js |  2 +-
 underscore.js     | 32 ++++++++++++++++-------
 6 files changed, 135 insertions(+), 13 deletions(-)
 create mode 100644 test/chaining.js

diff --git a/index.html b/index.html
index 256824685..540843faf 100644
--- a/index.html
+++ b/index.html
@@ -107,16 +107,55 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.3.3)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.0)</a></td>
           <td><i>16kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.3.3)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.0)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
     </p>
     
+    <h2>Object-Oriented and Functional Styles</h2>
+    
+    <p>
+      You can use Underscore in either an object-oriented or a functional style, 
+      depending on your preference. The following two lines of code are 
+      identical ways to double a list of numbers.
+    </p>
+    
+    <pre>
+_.map([1, 2, 3], function(n){ return n * 2; });
+_([1, 2, 3]).map(function(n){ return n * 2; });</pre>
+
+    <p>
+      Using the object-oriented style allows you to chain together methods. Calling
+      <tt>chain</tt> on a wrapped object will cause all future method calls to 
+      return wrapped objects as well. When you've finished the computation, 
+      use <tt>get</tt> to retrieve the final value. Here's an example of chaining
+      together a <b>map/flatten/reduce</b>, in order to get the word count of 
+      every word in a song.
+    </p>
+    
+<pre>
+var lyrics = [
+  {line : 1, words : "I'm a lumberjack and I'm okay"},
+  {line : 2, words : "I sleep all night and I work all day"},
+  {line : 3, words : "He's a lumberjack and he's okay"},
+  {line : 4, words : "He sleeps all night and he works all day"}
+];
+
+_(lyrics).chain()
+  .map(function(line) { return line.words.split(' '); })
+  .flatten()
+  .reduce({}, function(counts, word) { 
+    counts[word] = (counts[word] || 0) + 1;
+    return counts;
+}).get();
+
+=&gt; returns a hash containing the word counts...</pre>
+    
     <h2>Table of Contents</h2>
     
     <p>
@@ -742,6 +781,17 @@ moe === _.identity(moe);
       <pre>
 _.uniqueId('contact_');
 =&gt; 'contact_104'
+</pre>
+
+      <p id="functions">
+        <b class="header">functions</b><code>_.functions([prefix])</code>
+        <span class="alias">Alias: <b>methods</b></span>
+        <br />
+        Returns a sorted list of the name of every function in Underscore.
+      </p>
+      <pre>
+_.functions();
+=&gt; ["all", "any", "bind", "bindAll", "clone", "compact", "compose" ...
 </pre>
 
       <p id="template">
@@ -769,6 +819,16 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.0</b><br />
+        All Underscore functions can now be called in an object-oriented style, 
+        like so: <tt>_([1, 2, 3]).map(...);</tt>. Original patch provided by
+        <a href="http://macournoyer.com/">Marc-André Cournoyer</a>. 
+        Wrapped objects can be chained through multiple
+        method invocations. A <a href="#functions"><tt>functions</tt></a> method 
+        was added, providing a sorted list of all the functions in Underscore.
+      </p>
+      
       <p>
         <b class="header">0.3.3</b><br />
         Added the JavaScript 1.8 function <tt>reduceRight</tt>. Aliased it
@@ -787,7 +847,7 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
         All iterators are now passed in the original collection as their third
         argument, the same as JavaScript 1.6's <b>forEach</b>. Iterating over
         objects is now called with <tt>(value, key, collection)</tt>, for details
-        see <a href="#each">_.each</a>.
+        see <a href="#each"><tt>_.each</tt></a>.
       </p>
       
       <p>
diff --git a/test/chaining.js b/test/chaining.js
new file mode 100644
index 000000000..0f3b10037
--- /dev/null
+++ b/test/chaining.js
@@ -0,0 +1,35 @@
+$(document).ready(function() {
+  
+  module("Underscore chaining.");
+    
+  test("chaining: map/flatten/reduce", function() {
+    var lyrics = [
+      "I'm a lumberjack and I'm okay",
+      "I sleep all night and I work all day",
+      "He's a lumberjack and he's okay",
+      "He sleeps all night and he works all day"
+    ];
+    var counts = _(lyrics).chain()
+      .map(function(line) { return line.split(''); })
+      .flatten()
+      .reduce({}, function(hash, l) { 
+        hash[l] = hash[l] || 0;
+        hash[l]++;
+        return hash;
+    }).get();
+    ok(counts['a'] == 16 && counts['e'] == 10, 'counted all the letters in the song');
+  });
+  
+  test("chaining: select/reject/sortBy", function() {
+    var numbers = [1,2,3,4,5,6,7,8,9,10];
+    numbers = _(numbers).chain().select(function(n) {
+      return n % 2 == 0;
+    }).reject(function(n) {
+      return n % 4 == 0;
+    }).sortBy(function(n) {
+      return -n;
+    }).get();
+    equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
+  });
+  
+});
diff --git a/test/test.html b/test/test.html
index 1e001b739..30ac9098f 100644
--- a/test/test.html
+++ b/test/test.html
@@ -12,6 +12,7 @@
   <script type="text/javascript" src="functions.js"></script>
   <script type="text/javascript" src="objects.js"></script>
   <script type="text/javascript" src="utility.js"></script>
+  <script type="text/javascript" src="chaining.js"></script>
   <script type="text/javascript" src="speed.js"></script>  
 </head>
 <body>
diff --git a/test/utility.js b/test/utility.js
index b58844294..4022410ea 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -21,6 +21,18 @@ $(document).ready(function() {
     equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
   
+  test("utility: functions", function() {
+    var expected = ["all", "any", "bind", "bindAll", "clone", "compact", "compose", 
+    "defer", "delay", "detect", "each", "every", "extend", "filter", "first", 
+    "flatten", "foldl", "foldr", "forEach", "functions", "identity", "include", 
+    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEqual", 
+    "isFunction", "isUndefined", "keys", "last", "lastIndexOf", "map", "max", 
+    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "select", 
+    "size", "some", "sortBy", "sortedIndex", "template", "toArray", "uniq", 
+    "uniqueId", "values", "without", "wrap", "zip"];
+    ok(_(expected).isEqual(_.methods()), 'provides a sorted list of functions');
+  });
+  
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
diff --git a/underscore-min.js b/underscore-min.js
index ec7f39785..25ad77f4c 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
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\ No newline at end of file
+(function(){var b=this;var d=b._;var e=function(f){this._wrapped=f};var c=b._=function(f){return new e(f)};if(typeof exports!=="undefined"){c=exports}c.VERSION="0.4.0";c.each=function(o,m,k){var g=0;try{if(o.forEach){o.forEach(m,k)}else{if(o.length){for(var j=0,f=o.length;j<f;j++){m.call(k,o[j],j,o)}}else{if(o.each){o.each(function(p){m.call(k,p,g++,o)})}else{for(var h in o){if(Object.prototype.hasOwnProperty.call(o,h)){m.call(k,o[h],h,o)}}}}}}catch(n){if(n!="__break__"){throw n}}return o};c.map=function(j,h,g){if(j&&j.map){return j.map(h,g)}var f=[];c.each(j,function(n,k,m){f.push(h.call(g,n,k,m))});return f};c.reduce=function(j,f,h,g){if(j&&j.reduce){return j.reduce(c.bind(h,g),f)}c.each(j,function(n,k,m){f=h.call(g,f,n,k,m)});return f};c.reduceRight=function(j,f,h,g){if(j&&j.reduceRight){return j.reduceRight(c.bind(h,g),f)}var k=c.clone(c.toArray(j)).reverse();c.each(k,function(n,m){f=h.call(g,f,n,m,j)});return f};c.detect=function(j,h,g){var 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c.select(f,function(g){return !!g})};c.flatten=function(f){return c.reduce(f,[],function(g,h){if(c.isArray(h)){return g.concat(c.flatten(h))}g.push(h);return g})};c.without=function(g){var f=g.slice.call(arguments,0);return c.select(g,function(h){return !c.include(f,h)})};c.uniq=function(g,f){return c.reduce(g,[],function(h,k,j){if(0==j||(f?c.last(h)!=k:!c.include(h,k))){h.push(k)}return h})};c.intersect=function(g){var f=c.toArray(arguments).slice(1);return c.select(c.uniq(g),function(h){return c.all(f,function(j){return c.indexOf(j,h)>=0})})};c.zip=function(){var f=c.toArray(arguments);var j=c.max(c.pluck(f,"length"));var h=new Array(j);for(var g=0;g<j;g++){h[g]=c.pluck(f,String(g))}return h};c.indexOf=function(g,f){if(g.indexOf){return g.indexOf(f)}for(i=0,l=g.length;i<l;i++){if(g[i]===f){return i}}return -1};c.lastIndexOf=function(h,g){if(h.lastIndexOf){return h.lastIndexOf(g)}var f=h.length;while(f--){if(h[f]===g){return f}}return -1};c.bind=function(h,g){if(!g){return h}var f=c.toArray(arguments).slice(2);return function(){var j=f.concat(c.toArray(arguments));return h.apply(g,j)}};c.bindAll=function(){var f=c.toArray(arguments);var g=f.pop();c.each(f,function(h){g[h]=c.bind(g[h],g)})};c.delay=function(g,h){var f=c.toArray(arguments).slice(2);return setTimeout(function(){return g.apply(g,f)},h)};c.defer=function(f){return c.delay.apply(c,[f,1].concat(c.toArray(arguments).slice(1)))};c.wrap=function(f,g){return function(){var h=[f].concat(c.toArray(arguments));return g.apply(g,h)}};c.compose=function(){var f=c.toArray(arguments);return function(){for(var g=f.length-1;g>=0;g--){arguments=[f[g].apply(this,arguments)]}return arguments[0]}};c.keys=function(f){return c.map(f,function(h,g){return g})};c.values=function(f){return c.map(f,c.identity)};c.extend=function(f,h){for(var g in h){f[g]=h[g]}return f};c.clone=function(f){if(c.isArray(f)){return f.slice(0)}return c.extend({},f)};c.isEqual=function(g,f){if(g===f){return true}var k=typeof(g),n=typeof(f);if(k!=n){return false}if(g==f){return true}if(g.isEqual){return g.isEqual(f)}if(k!=="object"){return false}var h=c.keys(g),m=c.keys(f);if(h.length!=m.length){return false}for(var j in g){if(!c.isEqual(g[j],f[j])){return false}}return true};c.isElement=function(f){return !!(f&&f.nodeType==1)};c.isArray=function(f){return Object.prototype.toString.call(f)=="[object Array]"};c.isFunction=function(f){return Object.prototype.toString.call(f)=="[object Function]"};c.isUndefined=function(f){return typeof f=="undefined"};c.noConflict=function(){b._=d;return this};c.identity=function(f){return f};var a=0;c.uniqueId=function(f){var g=a++;return f?f+g:g};c.functions=function(){var g=[];for(var f in c){if(Object.prototype.hasOwnProperty.call(c,f)){g.push(f)}}return c.without(g,"VERSION","prototype","noConflict").sort()};c.template=function(h,g){var f=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+h.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return g?f(g):f};c.forEach=c.each;c.foldl=c.inject=c.reduce;c.foldr=c.reduceRight;c.filter=c.select;c.every=c.all;c.some=c.any;c.methods=c.functions;c.each(c.functions(),function(f){e.prototype[f]=function(){Array.prototype.unshift.call(arguments,this._wrapped);var g=c[f].apply(c,arguments);return this._chain?c(g).chain():g}});e.prototype.chain=function(){this._chain=true;return this};e.prototype.get=function(){return this._wrapped}})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 8f045b9ab..318268e2c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -18,8 +18,8 @@
   
   // If Underscore is called as a function, it returns a wrapped object that
   // can be used OO-style. This wrapper holds altered versions of all the 
-  // underscore functions.
-  var wrapper = function(obj) { this.wrapped = obj; };
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
   
   // Create a safe reference to the Underscore object for reference below.
   var _ = root._ = function(obj) { return new wrapper(obj); };
@@ -28,7 +28,7 @@
   if (typeof exports !== 'undefined') _ = exports;
   
   // Current version.
-  _.VERSION = '0.3.3';  
+  _.VERSION = '0.4.0';  
   
   /*------------------------ Collection Functions: ---------------------------*/
     
@@ -447,8 +447,9 @@
   
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
+  var idCounter = 0;
   _.uniqueId = function(prefix) {
-    var id = this._idCounter = (this._idCounter || 0) + 1;
+    var id = idCounter++;
     return prefix ? prefix + id : id;
   };
   
@@ -456,7 +457,7 @@
   _.functions = function() {
     var functions = [];
     for (var key in _) if (Object.prototype.hasOwnProperty.call(_, key)) functions.push(key);
-    return _.without(functions, 'VERSION', 'prototype', 'noConflict');
+    return _.without(functions, 'VERSION', 'prototype', 'noConflict').sort();
   };
   
   // JavaScript templating a-la ERB, pilfered from John Resig's 
@@ -487,13 +488,26 @@
   _.some     = _.any;
   _.methods  = _.functions;
   
-  /*------------------- Add all Functions to the Wrapper: --------------------*/
-
+  /*------------------------ Setup the OOP Wrapper: --------------------------*/
+  
+  // Add all of the Underscore functions to the wrapper object.
   _.each(_.functions(), function(name) {
     wrapper.prototype[name] = function() {
-      Array.prototype.unshift.call(arguments, this.wrapped);
-      return _[name].apply(_, arguments);
+      Array.prototype.unshift.call(arguments, this._wrapped);
+      var result = _[name].apply(_, arguments);
+      return this._chain ? _(result).chain() : result;
     };
   });
+  
+  // Start chaining a wrapped Underscore object.
+  wrapper.prototype.chain = function() {
+    this._chain = true;
+    return this;
+  };
+  
+  // Extracts the result from a wrapped and chained object.
+  wrapper.prototype.get = function() {
+    return this._wrapped;
+  };
 
 })();

From 51aef3b04d321016a2e7988bfaa51bd9bbac84a5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 14:59:08 -0500
Subject: [PATCH 042/533] including docs for chaining

---
 index.html | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 540843faf..0d698948a 100644
--- a/index.html
+++ b/index.html
@@ -108,7 +108,7 @@
       <table>
         <tr>
           <td><a href="underscore.js">Development Version (0.4.0)</a></td>
-          <td><i>16kb, Uncompressed with Comments</i></td>
+          <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
           <td><a href="underscore-min.js">Production Version (0.4.0)</a></td>
@@ -117,7 +117,7 @@
       </table>
     </p>
     
-    <h2>Object-Oriented and Functional Styles</h2>
+    <h2 id="styles">Object-Oriented and Functional Styles</h2>
     
     <p>
       You can use Underscore in either an object-oriented or a functional style, 
@@ -205,6 +205,12 @@ _(lyrics).chain()
       <a href="#template">template</a></span>
     </p>
     
+    <p>
+      <b>Chaining</b>
+      <br />
+      <span class="methods"><a href="#chain">chain</a>, <a href="#get">get</a>
+    </p>
+    
     <div id="documentation">
       
       <h2>Collection Functions (Arrays or Objects)</h2>
@@ -817,6 +823,30 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
 =&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
 </pre> 
 
+      <h2>Chaining</h2>
+      
+      <p id="chain">
+        <b class="header">chain</b><code>_(obj).chain()</code>
+        <br />
+        Returns a wrapped object. Calling methods on this object will continue
+        to return wrapped objects until <tt>get</tt> is used. (
+        <a href="#styles">A more realistic example.</a>)
+      </p>
+      <pre>
+_({moe : false, curly : true}).chain().values().any().isEqual(true).get();
+=&gt; true
+</pre>
+
+      <p id="get">
+        <b class="header">get</b><code>_(obj).get()</code>
+        <br />
+        Extracts the value of a wrapped object.
+      </p>
+      <pre>
+_([1, 2, 3]).get();
+=&gt; [1, 2, 3]
+</pre>
+
       <h2>Change Log</h2>
       
       <p>

From fb1889869edeeaa4d5f9f6420d43e8cf398980cb Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 15:09:32 -0500
Subject: [PATCH 043/533] docs tweak

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 0d698948a..5fb003072 100644
--- a/index.html
+++ b/index.html
@@ -154,7 +154,7 @@ _(lyrics).chain()
     return counts;
 }).get();
 
-=&gt; returns a hash containing the word counts...</pre>
+=&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
     
     <h2>Table of Contents</h2>
     

From d4f6e1a42ff1b0e5e29796aeecb8a71b9be58f7e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 22:48:47 -0500
Subject: [PATCH 044/533] removed _.each support of objects with their own
 'each' method -- it was a little bit funky

---
 underscore.js | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/underscore.js b/underscore.js
index 318268e2c..692dbe905 100644
--- a/underscore.js
+++ b/underscore.js
@@ -33,7 +33,7 @@
   /*------------------------ Collection Functions: ---------------------------*/
     
   // The cornerstone, an each implementation.
-  // Handles objects implementing forEach, each, arrays, and raw objects.
+  // Handles objects implementing forEach, arrays, and raw objects.
   _.each = function(obj, iterator, context) {
     var index = 0;
     try {
@@ -41,8 +41,6 @@
         obj.forEach(iterator, context);
       } else if (obj.length) {
         for (var i=0, l = obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
-      } else if (obj.each) {
-        obj.each(function(value) { iterator.call(context, value, index++, obj); });
       } else {
         for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) {
           iterator.call(context, obj[key], key, obj);

From b5920e94a3221bbd8c6146d9839408030eb1922a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 23:04:18 -0500
Subject: [PATCH 045/533] added an isEmpty function that works on arrays and
 objects

---
 index.html      | 15 ++++++++++++++-
 test/objects.js | 11 +++++++++++
 test/utility.js |  2 +-
 underscore.js   |  9 ++++++---
 4 files changed, 32 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index 5fb003072..22f09bc5e 100644
--- a/index.html
+++ b/index.html
@@ -192,7 +192,8 @@ _(lyrics).chain()
       <b>Objects</b>
       <br />
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>, 
-      <a href="#extend">extend</a>, <a href="#clone">clone</a>, <a href="#isEqual">isEqual</a>, <a href="#isElement">isElement</a>, 
+      <a href="#extend">extend</a>, <a href="#clone">clone</a>, 
+      <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>, 
       <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isUndefined">isUndefined</a>
       </span>
     </p>
@@ -710,6 +711,18 @@ moe == clone;
 =&gt; false
 _.isEqual(moe, clone);
 =&gt; true
+</pre>
+
+      <p id="isEmpty">
+        <b class="header">isEmpty</b><code>_.isEmpty(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> contains no values.
+      </p>
+      <pre>
+_.isEmpty([1, 2, 3]);
+=&gt; false
+_.isEmpty({});
+=&gt; true
 </pre>
 
       <p id="isElement">
diff --git a/test/objects.js b/test/objects.js
index 6a20e8d9a..489c39f2a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -36,6 +36,17 @@ $(document).ready(function() {
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
   });
   
+  test("objects: isEmpty", function() {
+    ok(!_([1]).isEmpty(), '[1] is not empty');
+    ok(_.isEmpty([]), '[] is empty');
+    ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
+    ok(_.isEmpty({}), '{} is empty');
+    
+    var obj = {one : 1};
+    delete obj.one;
+    ok(_.isEmpty(obj), 'deleting all the keys from an object empties it');
+  });
+  
   test("objects: isElement", function() {
     ok(!_.isElement('div'), 'strings are not dom elements');
     ok(_.isElement($('html')[0]), 'the html tag is a DOM element');
diff --git a/test/utility.js b/test/utility.js
index 4022410ea..171340830 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -25,7 +25,7 @@ $(document).ready(function() {
     var expected = ["all", "any", "bind", "bindAll", "clone", "compact", "compose", 
     "defer", "delay", "detect", "each", "every", "extend", "filter", "first", 
     "flatten", "foldl", "foldr", "forEach", "functions", "identity", "include", 
-    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEqual", 
+    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual", 
     "isFunction", "isUndefined", "keys", "last", "lastIndexOf", "map", "max", 
     "methods", "min", "pluck", "reduce", "reduceRight", "reject", "select", 
     "size", "some", "sortBy", "sortedIndex", "template", "toArray", "uniq", 
diff --git a/underscore.js b/underscore.js
index 692dbe905..9386b8564 100644
--- a/underscore.js
+++ b/underscore.js
@@ -146,9 +146,7 @@
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
     _.each(obj, function(value) {
-      if (found = value === target) {
-        throw '__break__';
-      }
+      if (found = value === target) throw '__break__';
     });
     return found;
   };
@@ -409,6 +407,11 @@
     return true;
   };
   
+  // Is a given array or object empty?
+  _.isEmpty = function(obj) {
+    return (_.isArray(obj) ? obj : _.values(obj)).length == 0;
+  };
+  
   // Is a given value a DOM element?
   _.isElement = function(obj) {
     return !!(obj && obj.nodeType == 1);

From ef35fe1d861252bdd905611c877985d3b82232b8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 23:17:27 -0500
Subject: [PATCH 046/533] allowing bind with undefined contexts, but with
 arguments

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 9386b8564..38eb363be 100644
--- a/underscore.js
+++ b/underscore.js
@@ -308,7 +308,7 @@
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
   _.bind = function(func, context) {
-    if (!context) return func;
+    context = context || root;
     var args = _.toArray(arguments).slice(2);
     return function() {
       var a = args.concat(_.toArray(arguments));

From 9d4e34e19e03654082cff8589903ceaf026c11fc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 7 Nov 2009 23:24:12 -0500
Subject: [PATCH 047/533] testing bind without context

---
 test/functions.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 80c5cb963..a764d75c0 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -4,19 +4,22 @@ $(document).ready(function() {
     
   test("functions: bind", function() {
     var context = {name : 'moe'};
-    var func = function() { return "name: " + this.name; };
+    var func = function(arg) { return "name: " + (this.name || arg); };
     var bound = _.bind(func, context);
     equals(bound(), 'name: moe', 'can bind a function to a context');
     
     bound = _(func).bind(context);
     equals(bound(), 'name: moe', 'can do OO-style binding');
     
+    bound = _.bind(func, null, 'curly');
+    equals(bound(), 'name: curly', 'can bind without specifying a context');
+    
     func = function(salutation, name) { return salutation + ': ' + name; };
     func = _.bind(func, this, 'hello');
     equals(func('moe'), 'hello: moe', 'the function was partially applied in advance');
     
     var func = _.bind(func, this, 'curly');
-    equals(func(), 'hello: curly', 'the function was completely applied in advance');    
+    equals(func(), 'hello: curly', 'the function was completely applied in advance');   
   });
   
   test("functions: bindAll", function() {

From cda4612a00a778cd205e6990df73ba2454df6151 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 8 Nov 2009 10:07:56 -0500
Subject: [PATCH 048/533] axeing trailing whitespace

---
 underscore.js | 180 +++++++++++++++++++++++++-------------------------
 1 file changed, 90 insertions(+), 90 deletions(-)

diff --git a/underscore.js b/underscore.js
index 38eb363be..b4db3a9c9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,37 +1,37 @@
 // Underscore.js
 // (c) 2009 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the terms of the MIT license.
-// Portions of Underscore are inspired by or borrowed from Prototype.js, 
+// Portions of Underscore are inspired by or borrowed from Prototype.js,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore/
 
 (function() {
-  
+
   /*------------------------- Baseline setup ---------------------------------*/
-  
+
   // Establish the root object, "window" in the browser, or "global" on the server.
   var root = this;
-  
+
   // Save the previous value of the "_" variable.
   var previousUnderscore = root._;
-  
+
   // If Underscore is called as a function, it returns a wrapped object that
-  // can be used OO-style. This wrapper holds altered versions of all the 
+  // can be used OO-style. This wrapper holds altered versions of all the
   // underscore functions. Wrapped objects may be chained.
   var wrapper = function(obj) { this._wrapped = obj; };
-  
+
   // Create a safe reference to the Underscore object for reference below.
   var _ = root._ = function(obj) { return new wrapper(obj); };
-  
+
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') _ = exports;
-  
+
   // Current version.
-  _.VERSION = '0.4.0';  
-  
+  _.VERSION = '0.4.0';
+
   /*------------------------ Collection Functions: ---------------------------*/
-    
+
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
   _.each = function(obj, iterator, context) {
@@ -51,7 +51,7 @@
     }
     return obj;
   };
-  
+
   // Return the results of applying the iterator to each element. Use JavaScript
   // 1.6's version of map, if possible.
   _.map = function(obj, iterator, context) {
@@ -62,7 +62,7 @@
     });
     return results;
   };
-  
+
   // Reduce builds up a single result from a list of values. Also known as
   // inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
   _.reduce = function(obj, memo, iterator, context) {
@@ -72,8 +72,8 @@
     });
     return memo;
   };
-  
-  // The right-associative version of reduce, also known as foldr. Uses 
+
+  // The right-associative version of reduce, also known as foldr. Uses
   // JavaScript 1.8's version of reduceRight, if available.
   _.reduceRight = function(obj, memo, iterator, context) {
     if (obj && obj.reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
@@ -83,7 +83,7 @@
     });
     return memo;
   };
-  
+
   // Return the first value which passes a truth test.
   _.detect = function(obj, iterator, context) {
     var result;
@@ -95,7 +95,7 @@
     });
     return result;
   };
-  
+
   // Return all the elements that pass a truth test. Use JavaScript 1.6's
   // filter(), if it exists.
   _.select = function(obj, iterator, context) {
@@ -106,7 +106,7 @@
     });
     return results;
   };
-  
+
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
@@ -115,7 +115,7 @@
     });
     return results;
   };
-  
+
   // Determine whether all of the elements match a truth test. Delegate to
   // JavaScript 1.6's every(), if it is present.
   _.all = function(obj, iterator, context) {
@@ -127,7 +127,7 @@
     });
     return result;
   };
-  
+
   // Determine if at least one element in the object matches a truth test. Use
   // JavaScript 1.6's some(), if it exists.
   _.any = function(obj, iterator, context) {
@@ -139,8 +139,8 @@
     });
     return result;
   };
-  
-  // Determine if a given value is included in the array or object, 
+
+  // Determine if a given value is included in the array or object,
   // based on '==='.
   _.include = function(obj, target) {
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
@@ -150,7 +150,7 @@
     });
     return found;
   };
-  
+
   // Invoke a method with arguments on every item in a collection.
   _.invoke = function(obj, method) {
     var args = _.toArray(arguments).slice(2);
@@ -158,12 +158,12 @@
       return (method ? value[method] : value).apply(value, args);
     });
   };
-  
+
   // Convenience version of a common use case of map: fetching a property.
   _.pluck = function(obj, key) {
     return _.map(obj, function(value){ return value[key]; });
   };
-  
+
   // Return the maximum item or (item-based computation).
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
@@ -174,7 +174,7 @@
     });
     return result.value;
   };
-  
+
   // Return the minimum element (or element-based computation).
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
@@ -185,7 +185,7 @@
     });
     return result.value;
   };
-  
+
   // Sort the object's values by a criteria produced by an iterator.
   _.sortBy = function(obj, iterator, context) {
     return _.pluck(_.map(obj, function(value, index, list) {
@@ -198,7 +198,7 @@
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };
-  
+
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
   _.sortedIndex = function(array, obj, iterator) {
@@ -210,36 +210,36 @@
     }
     return low;
   };
-  
+
   // Convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
     if (!iterable) return [];
     if (_.isArray(iterable)) return iterable;
     return _.map(iterable, function(val){ return val; });
   };
-  
+
   // Return the number of elements in an object.
   _.size = function(obj) {
     return _.toArray(obj).length;
   };
-  
+
   /*-------------------------- Array Functions: ------------------------------*/
-  
+
   // Get the first element of an array.
   _.first = function(array) {
     return array[0];
   };
-  
+
   // Get the last element of an array.
   _.last = function(array) {
     return array[array.length - 1];
   };
-  
+
   // Trim out all falsy values from an array.
   _.compact = function(array) {
     return _.select(array, function(value){ return !!value; });
   };
-  
+
   // Return a completely flattened version of an array.
   _.flatten = function(array) {
     return _.reduce(array, [], function(memo, value) {
@@ -248,13 +248,13 @@
       return memo;
     });
   };
-  
+
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
     var values = array.slice.call(arguments, 0);
     return _.select(array, function(value){ return !_.include(values, value); });
   };
-  
+
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
   _.uniq = function(array, isSorted) {
@@ -263,18 +263,18 @@
       return memo;
     });
   };
-  
-  // Produce an array that contains every item shared between all the 
+
+  // Produce an array that contains every item shared between all the
   // passed-in arrays.
   _.intersect = function(array) {
     var rest = _.toArray(arguments).slice(1);
     return _.select(_.uniq(array), function(item) {
-      return _.all(rest, function(other) { 
+      return _.all(rest, function(other) {
         return _.indexOf(other, item) >= 0;
       });
     });
   };
-  
+
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
   _.zip = function() {
@@ -284,16 +284,16 @@
     for (var i=0; i<length; i++) results[i] = _.pluck(args, String(i));
     return results;
   };
-  
-  // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE), 
-  // we need this function. Return the position of the first occurence of an 
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  // we need this function. Return the position of the first occurence of an
   // item in an array, or -1 if the item is not included in the array.
   _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
     for (i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
-  
+
   // Provide JavaScript 1.6's lastIndexOf, delegating to the native function,
   // if possible.
   _.lastIndexOf = function(array, item) {
@@ -302,9 +302,9 @@
     while (i--) if (array[i] === item) return i;
     return -1;
   };
-  
+
   /* ----------------------- Function Functions: -----------------------------*/
-  
+
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
   _.bind = function(func, context) {
@@ -315,8 +315,8 @@
       return func.apply(context, a);
     };
   };
-  
-  // Bind all of an object's methods to that object. Useful for ensuring that 
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
   // all callbacks defined on an object belong to it.
   _.bindAll = function() {
     var args = _.toArray(arguments);
@@ -325,22 +325,22 @@
       context[methodName] = _.bind(context[methodName], context);
     });
   };
-  
+
   // Delays a function for the given number of milliseconds, and then calls
   // it with the arguments supplied.
   _.delay = function(func, wait) {
     var args = _.toArray(arguments).slice(2);
     return setTimeout(function(){ return func.apply(func, args); }, wait);
   };
-  
-  // Defers a function, scheduling it to run after the current call stack has 
+
+  // Defers a function, scheduling it to run after the current call stack has
   // cleared.
   _.defer = function(func) {
     return _.delay.apply(_, [func, 1].concat(_.toArray(arguments).slice(1)));
   };
-  
-  // Returns the first function passed as an argument to the second, 
-  // allowing you to adjust arguments, run code before and after, and 
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
   // conditionally execute the original function.
   _.wrap = function(func, wrapper) {
     return function() {
@@ -348,7 +348,7 @@
       return wrapper.apply(wrapper, args);
     };
   };
-  
+
   // Returns a function that is the composition of a list of functions, each
   // consuming the return value of the function that follows.
   _.compose = function() {
@@ -360,31 +360,31 @@
       return arguments[0];
     };
   };
-  
+
   /* ------------------------- Object Functions: ---------------------------- */
-  
+
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
     return _.map(obj, function(value, key){ return key; });
   };
-  
+
   // Retrieve the values of an object's properties.
   _.values = function(obj) {
     return _.map(obj, _.identity);
   };
-  
+
   // Extend a given object with all of the properties in a source object.
   _.extend = function(destination, source) {
     for (var property in source) destination[property] = source[property];
     return destination;
   };
-  
+
   // Create a (shallow-cloned) duplicate of an object.
   _.clone = function(obj) {
     if (_.isArray(obj)) return obj.slice(0);
     return _.extend({}, obj);
   };
-  
+
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
     // Check object identity.
@@ -406,46 +406,46 @@
     for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
     return true;
   };
-  
+
   // Is a given array or object empty?
   _.isEmpty = function(obj) {
     return (_.isArray(obj) ? obj : _.values(obj)).length == 0;
   };
-  
+
   // Is a given value a DOM element?
   _.isElement = function(obj) {
     return !!(obj && obj.nodeType == 1);
   };
-  
+
   // Is a given value a real Array?
   _.isArray = function(obj) {
     return Object.prototype.toString.call(obj) == '[object Array]';
   };
-  
+
   // Is a given value a Function?
   _.isFunction = function(obj) {
     return Object.prototype.toString.call(obj) == '[object Function]';
   };
-  
+
   // Is a given variable undefined?
   _.isUndefined = function(obj) {
     return typeof obj == 'undefined';
   };
-  
+
   /* -------------------------- Utility Functions: -------------------------- */
-  
+
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
   _.noConflict = function() {
     root._ = previousUnderscore;
     return this;
   };
-  
+
   // Keep the identity function around for default iterators.
-  _.identity = function(value) { 
+  _.identity = function(value) {
     return value;
   };
-  
+
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
   var idCounter = 0;
@@ -453,32 +453,32 @@
     var id = idCounter++;
     return prefix ? prefix + id : id;
   };
-  
+
   // Return a sorted list of the function names available in Underscore.
   _.functions = function() {
     var functions = [];
     for (var key in _) if (Object.prototype.hasOwnProperty.call(_, key)) functions.push(key);
     return _.without(functions, 'VERSION', 'prototype', 'noConflict').sort();
   };
-  
-  // JavaScript templating a-la ERB, pilfered from John Resig's 
+
+  // JavaScript templating a-la ERB, pilfered from John Resig's
   // "Secrets of the JavaScript Ninja", page 83.
   _.template = function(str, data) {
-    var fn = new Function('obj', 
+    var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str
-        .replace(/[\r\t\n]/g, " ") 
-        .split("<%").join("\t") 
-        .replace(/((^|%>)[^\t]*)'/g, "$1\r") 
-        .replace(/\t=(.*?)%>/g, "',$1,'") 
-        .split("\t").join("');") 
-        .split("%>").join("p.push('") 
-        .split("\r").join("\\'") 
+        .replace(/[\r\t\n]/g, " ")
+        .split("<%").join("\t")
+        .replace(/((^|%>)[^\t]*)'/g, "$1\r")
+        .replace(/\t=(.*?)%>/g, "',$1,'")
+        .split("\t").join("');")
+        .split("%>").join("p.push('")
+        .split("\r").join("\\'")
     + "');}return p.join('');");
-    return data ? fn(data) : fn;  
+    return data ? fn(data) : fn;
   };
-  
+
   /*------------------------------- Aliases ----------------------------------*/
 
   _.forEach  = _.each;
@@ -488,9 +488,9 @@
   _.every    = _.all;
   _.some     = _.any;
   _.methods  = _.functions;
-  
+
   /*------------------------ Setup the OOP Wrapper: --------------------------*/
-  
+
   // Add all of the Underscore functions to the wrapper object.
   _.each(_.functions(), function(name) {
     wrapper.prototype[name] = function() {
@@ -499,13 +499,13 @@
       return this._chain ? _(result).chain() : result;
     };
   });
-  
+
   // Start chaining a wrapped Underscore object.
   wrapper.prototype.chain = function() {
     this._chain = true;
     return this;
   };
-  
+
   // Extracts the result from a wrapped and chained object.
   wrapper.prototype.get = function() {
     return this._wrapped;

From 5eec4e5d22dae5518b585f36e867112aac0606df Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 8 Nov 2009 12:07:10 -0500
Subject: [PATCH 049/533] adding breakLoop

---
 index.html      | 240 +++++++++++++++++++++++++-----------------------
 test/utility.js |  11 ++-
 underscore.js   |  13 ++-
 3 files changed, 146 insertions(+), 118 deletions(-)

diff --git a/index.html b/index.html
index 22f09bc5e..06de0f1b9 100644
--- a/index.html
+++ b/index.html
@@ -1,7 +1,7 @@
 <!DOCTYPE HTML>
 <html>
 <head>
-  <title>Underscore.js</title> 
+  <title>Underscore.js</title>
   <style>
     body {
       font-size: 16px;
@@ -65,45 +65,45 @@
   </style>
 </head>
 <body>
-  
+
   <div class="container">
-    
+
     <h1>Underscore.js</h1>
-    
+
     <p>
-      <a href="http://github.com/documentcloud/underscore/">Underscore</a> is a 
+      <a href="http://github.com/documentcloud/underscore/">Underscore</a> is a
       utility-belt library for JavaScript that provides a lot of the
       functional programming support that you would expect in
-      <a href="http://prototypejs.org/api">Prototype.js</a> 
-      (or <a href="http://www.ruby-doc.org/core/classes/Enumerable.html">Ruby</a>), 
-      but without extending any of the built-in JavaScript objects. It's the 
+      <a href="http://prototypejs.org/api">Prototype.js</a>
+      (or <a href="http://www.ruby-doc.org/core/classes/Enumerable.html">Ruby</a>),
+      but without extending any of the built-in JavaScript objects. It's the
       tie to go along with <a href="http://docs.jquery.com">jQuery</a>'s tux.
     </p>
-    
+
     <p>
-      Underscore provides 45-odd functions that support both the usual 
-      functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash; 
-      as well as more specialized helpers: function binding, javascript 
-      templating, deep equality testing, and so on. It delegates to built-in 
-      functions, if present, so 
-      <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">JavaScript 1.6</a> 
-      compliant browsers will use the 
-      native implementations of <b>forEach</b>, <b>map</b>, <b>filter</b>, 
+      Underscore provides 45-odd functions that support both the usual
+      functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash;
+      as well as more specialized helpers: function binding, javascript
+      templating, deep equality testing, and so on. It delegates to built-in
+      functions, if present, so
+      <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">JavaScript 1.6</a>
+      compliant browsers will use the
+      native implementations of <b>forEach</b>, <b>map</b>, <b>filter</b>,
       <b>every</b>, <b>some</b> and <b>indexOf</b>.
     </p>
-    
+
     <p>
       Underscore includes a complete <a href="test/test.html">Test &amp; Benchmark Suite</a>
       for your perusal.
     </p>
-    
+
     <p>
-      The unabridged source code is 
+      The unabridged source code is
       <a href="http://github.com/documentcloud/underscore/">available on GitHub</a>.
     </p>
-    
+
     <h2>Downloads <i style="padding-left: 12px; font-size:12px;">(Right-click, and use "Save As")</i></h2>
-    
+
     <p>
       <table>
         <tr>
@@ -116,28 +116,28 @@
         </tr>
       </table>
     </p>
-    
+
     <h2 id="styles">Object-Oriented and Functional Styles</h2>
-    
+
     <p>
-      You can use Underscore in either an object-oriented or a functional style, 
-      depending on your preference. The following two lines of code are 
+      You can use Underscore in either an object-oriented or a functional style,
+      depending on your preference. The following two lines of code are
       identical ways to double a list of numbers.
     </p>
-    
+
     <pre>
 _.map([1, 2, 3], function(n){ return n * 2; });
 _([1, 2, 3]).map(function(n){ return n * 2; });</pre>
 
     <p>
       Using the object-oriented style allows you to chain together methods. Calling
-      <tt>chain</tt> on a wrapped object will cause all future method calls to 
-      return wrapped objects as well. When you've finished the computation, 
+      <tt>chain</tt> on a wrapped object will cause all future method calls to
+      return wrapped objects as well. When you've finished the computation,
       use <tt>get</tt> to retrieve the final value. Here's an example of chaining
-      together a <b>map/flatten/reduce</b>, in order to get the word count of 
+      together a <b>map/flatten/reduce</b>, in order to get the word count of
       every word in a song.
     </p>
-    
+
 <pre>
 var lyrics = [
   {line : 1, words : "I'm a lumberjack and I'm okay"},
@@ -149,73 +149,73 @@ var lyrics = [
 _(lyrics).chain()
   .map(function(line) { return line.words.split(' '); })
   .flatten()
-  .reduce({}, function(counts, word) { 
+  .reduce({}, function(counts, word) {
     counts[word] = (counts[word] || 0) + 1;
     return counts;
 }).get();
 
 =&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
-    
+
     <h2>Table of Contents</h2>
-    
+
     <p>
       <b>Collections</b>
-      <br /> 
-      <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>, 
-      <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>, 
-      <a href="#detect">detect</a>, <a href="#select">select</a>, 
-      <a href="#reject">reject</a>, <a href="#all">all</a>, 
-      <a href="#any">any</a>, <a href="#include">include</a>, 
-      <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>, 
-      <a href="#max">max</a>, <a href="#min">min</a>, 
-      <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>, 
+      <br />
+      <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>,
+      <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>,
+      <a href="#detect">detect</a>, <a href="#select">select</a>,
+      <a href="#reject">reject</a>, <a href="#all">all</a>,
+      <a href="#any">any</a>, <a href="#include">include</a>,
+      <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
+      <a href="#max">max</a>, <a href="#min">min</a>,
+      <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>,
       <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
-    
+
     <p>
       <b>Arrays</b>
       <br />
-      <span class="methods"><a href="#first">first</a>, <a href="#last">last</a>, 
-      <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>, 
+      <span class="methods"><a href="#first">first</a>, <a href="#last">last</a>,
+      <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>,
       <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>,
       <a href="#lastIndexOf">lastIndexOf</a></span>
     </p>
-    
+
     <p>
       <b>Functions</b>
       <br />
-      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>, 
+      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>,
       <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>, <a href="#compose">compose</a></span>
     </p>
-    
+
     <p>
       <b>Objects</b>
       <br />
-      <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>, 
-      <a href="#extend">extend</a>, <a href="#clone">clone</a>, 
-      <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>, 
+      <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
+      <a href="#extend">extend</a>, <a href="#clone">clone</a>,
+      <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isUndefined">isUndefined</a>
       </span>
     </p>
-    
+
     <p>
       <b>Utility</b>
       <br />
       <span class="methods"><a href="#noConflict">noConflict</a>,
-      <a href="#identity">identity</a>, <a href="#uniqueId">uniqueId</a>, 
-      <a href="#template">template</a></span>
+      <a href="#identity">identity</a>, <a href="#breakLoop">breakLoop</a></span>,
+      <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
     </p>
-    
+
     <p>
       <b>Chaining</b>
       <br />
       <span class="methods"><a href="#chain">chain</a>, <a href="#get">get</a>
     </p>
-    
+
     <div id="documentation">
-      
+
       <h2>Collection Functions (Arrays or Objects)</h2>
-      
+
       <p id="each">
         <b class="header">each</b><code>_.each(list, iterator, [context])</code>
         <span class="alias">Alias: <b>forEach</b></span>
@@ -224,19 +224,19 @@ _(lyrics).chain()
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
         passed. Each invocation of <b>iterator</b> is called with three arguments:
         <tt>(element, index, list)</tt>. If <b>list</b> is a JavaScript object, <b>iterator</b>'s
-        arguments will be <tt>(value, key, list)</tt>. If the <b>list</b> has an <b>each</b> 
-        method of its own, it will be used instead. Delegates to the native 
+        arguments will be <tt>(value, key, list)</tt>. If the <b>list</b> has an <b>each</b>
+        method of its own, it will be used instead. Delegates to the native
         <b>forEach</b> function if it exists.
       </p>
       <pre>
 _.each([1, 2, 3], function(num){ alert(num); });
 =&gt; alerts each number in turn...</pre>
-      
+
       <p id="map">
         <b class="header">map</b><code>_.map(list, iterator, [context])</code>
         <br />
-        Produces a new array of values by mapping each value in <b>list</b> 
-        through a transformation function (<b>iterator</b>). If the native 
+        Produces a new array of values by mapping each value in <b>list</b>
+        through a transformation function (<b>iterator</b>). If the native
         <b>map</b> method exists, it will be used instead.
       </p>
       <pre>
@@ -247,7 +247,7 @@ _.map([1, 2, 3], function(num){ return num * 3 });
         <b class="header">reduce</b><code>_.reduce(list, memo, iterator, [context])</code>
         <span class="alias">Aliases: <b>inject, foldl</b></span>
         <br />
-        Also known as <b>inject</b> and <b>foldl</b>, <b>reduce</b> boils down a 
+        Also known as <b>inject</b> and <b>foldl</b>, <b>reduce</b> boils down a
         <b>list</b> of values into a single value. <b>Memo</b> is the initial state
         of the reduction, and each successive step of it should be returned by
         <b>iterator</b>.
@@ -261,7 +261,7 @@ var sum = _.reduce([1, 2, 3], 0, function(memo, num){ return memo + num });
         <b class="header">reduceRight</b><code>_.reduceRight(list, memo, iterator, [context])</code>
         <span class="alias">Alias: <b>foldr</b></span>
         <br />
-        The right-associative version of <b>reduce</b>. Delegates to the 
+        The right-associative version of <b>reduce</b>. Delegates to the
         JavaScript 1.8 version of <b>reduceRight</b>, if it exists. <b>Foldr</b>
         is not as useful in JavaScript as it would be in a language with lazy
         evaluation.
@@ -275,8 +275,8 @@ var flat = _.reduceRight(list, [], function(a, b) { return a.concat(b); });
       <p id="detect">
         <b class="header">detect</b><code>_.detect(list, iterator, [context])</code>
         <br />
-        Looks through each value in the <b>list</b>, returning the first one that 
-        passes a truth test (<b>iterator</b>). The function returns as 
+        Looks through each value in the <b>list</b>, returning the first one that
+        passes a truth test (<b>iterator</b>). The function returns as
         soon as it finds an acceptable element, and doesn't traverse the
         entire list.
       </p>
@@ -314,7 +314,7 @@ var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
         <span class="alias">Alias: <b>every</b></span>
         <br />
         Returns <i>true</i> if all of the values in the <b>list</b> pass the <b>iterator</b>
-        truth test. If an <b>iterator</b> is not provided, the truthy value of 
+        truth test. If an <b>iterator</b> is not provided, the truthy value of
         the element will be used instead. Delegates to the native method <b>every</b>, if
         present.
       </p>
@@ -364,7 +364,7 @@ _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
       <p id="pluck">
         <b class="header">pluck</b><code>_.pluck(list, propertyName)</code>
         <br />
-        An convenient version of what is perhaps the most common use-case for 
+        An convenient version of what is perhaps the most common use-case for
         <b>map</b>: extracting a list of property values.
       </p>
       <pre>
@@ -443,9 +443,9 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 _.size({one : 1, two : 2, three : 3});
 =&gt; 3
 </pre>
-  
+
       <h2>Array Functions</h2>
-      
+
       <p id="first">
         <b class="header">first</b><code>_.first(array)</code>
         <br />
@@ -469,8 +469,8 @@ _.last([3, 2, 1]);
       <p id="compact">
         <b class="header">compact</b><code>_.compact(array)</code>
         <br />
-        Returns a copy of the <b>array</b> with all falsy values removed. 
-        In JavaScript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>, 
+        Returns a copy of the <b>array</b> with all falsy values removed.
+        In JavaScript, <i>false</i>, <i>null</i>, <i>0</i>, <i>""</i>,
         <i>undefined</i> and <i>NaN</i> are all falsy.
       </p>
       <pre>
@@ -537,7 +537,7 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
       <p id="indexOf">
         <b class="header">indexOf</b><code>_.indexOf(array, value)</code>
         <br />
-        Returns the index at which <b>value</b> can be found in the <b>array</b>, 
+        Returns the index at which <b>value</b> can be found in the <b>array</b>,
         or <i>-1</i> if value is not present in the <b>array</b>. Uses the native
         <b>indexOf</b> function unless it's missing.
       </p>
@@ -549,8 +549,8 @@ _.indexOf([1, 2, 3], 2);
       <p id="lastIndexOf">
         <b class="header">lastIndexOf</b><code>_.lastIndexOf(array, value)</code>
         <br />
-        Returns the index of the last occurrence of <b>value</b> in the <b>array</b>, 
-        or <i>-1</i> if value is not present. Uses the native <b>lastIndexOf</b> 
+        Returns the index of the last occurrence of <b>value</b> in the <b>array</b>,
+        or <i>-1</i> if value is not present. Uses the native <b>lastIndexOf</b>
         function if possible.
       </p>
       <pre>
@@ -566,7 +566,7 @@ _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
         Bind a <b>function</b> to a <b>context</b> object, meaning that whenever
         the function is called, the value of <i>this</i> will be the <b>context</b>.
         Optionally, bind <b>arguments</b> to the <b>function</b> to pre-fill them,
-        also known as <b>currying</b>. 
+        also known as <b>currying</b>.
       </p>
       <pre>
 var func = function(greeting){ return greeting + ': ' + this.name };
@@ -578,15 +578,15 @@ func();
       <p id="bindAll">
         <b class="header">bindAll</b><code>_.bindAll(*methodNames, context)</code>
         <br />
-        Binds a number of methods on the <b>context</b> object, specified by 
+        Binds a number of methods on the <b>context</b> object, specified by
         <b>methodNames</b>, to be run in the context of that object whenever they
         are invoked. Very handy for binding functions that are going to be used
-        as event handlers, which would otherwise be invoked with a fairly useless 
+        as event handlers, which would otherwise be invoked with a fairly useless
         <i>this</i>.
       </p>
       <pre>
 var buttonView = {
-  label   : 'underscore', 
+  label   : 'underscore',
   onClick : function(){ alert('clicked: ' + this.label); },
   onHover : function(){ console.log('hovering: ' + this.label); }
 };
@@ -624,8 +624,8 @@ _.defer(function(){ alert('deferred'); });
       <p id="wrap">
         <b class="header">wrap</b><code>_.wrap(function, wrapper)</code>
         <br />
-        Wraps the first <b>function</b> inside of the <b>wrapper</b> function, 
-        passing it as the first argument. This allows the <b>wrapper</b> to 
+        Wraps the first <b>function</b> inside of the <b>wrapper</b> function,
+        passing it as the first argument. This allows the <b>wrapper</b> to
         execute code before and after the <b>function</b> runs, adjust the arguments,
         and execute it conditionally.
       </p>
@@ -641,7 +641,7 @@ hello();
       <p id="compose">
         <b class="header">compose</b><code>_.compose(*functions)</code>
         <br />
-        Returns the composition of a list of <b>functions</b>, where each function 
+        Returns the composition of a list of <b>functions</b>, where each function
         consumes the return value of the function that follows. In math terms,
         composing the functions <i>f()</i>, <i>g()</i>, and <i>h()</i> produces
         <i>f(g(h()))</i>.
@@ -679,7 +679,7 @@ _.values({one : 1, two : 2, three : 3});
       <p id="extend">
         <b class="header">extend</b><code>_.extend(destination, source)</code>
         <br />
-        Copy all of the properties in the <b>source</b> object over to the 
+        Copy all of the properties in the <b>source</b> object over to the
         <b>destination</b> object.
       </p>
       <pre>
@@ -768,7 +768,7 @@ _.isUndefined(window.missingVariable);
 </pre>
 
       <h2>Utility Functions</h2>
-      
+
       <p id="noConflict">
         <b class="header">noConflict</b><code>_.noConflict()</code>
         <br />
@@ -781,20 +781,34 @@ var underscore = _.noConflict();</pre>
       <p id="identity">
         <b class="header">identity</b><code>_.identity(value)</code>
         <br />
-        Returns the same value that is used as the argument. In math: 
+        Returns the same value that is used as the argument. In math:
         <tt>f(x) = x</tt><br />
-        This function looks useless, but is used throughout Underscore as 
+        This function looks useless, but is used throughout Underscore as
         a default iterator.
       </p>
       <pre>
 var moe = {name : 'moe'};
 moe === _.identity(moe);
-=> true</pre>
+=&gt; true</pre>
+
+      <p id="breakLoop">
+        <b class="header">breakLoop</b><code>_.breakLoop()</code>
+        <br />
+        Breaks out of the current loop iteration. Similar to the <tt>break</tt>
+        keyword in regular "for" loop, but works within an iterator function.
+      </p>
+      <pre>
+var result = null;
+_.each([1, 2, 3], function(num) { 
+  if ((result = num) == 2) _.breakLoop(); 
+});
+result;
+=&gt; 2</pre>
 
       <p id="uniqueId">
         <b class="header">uniqueId</b><code>_.uniqueId([prefix])</code>
         <br />
-        Generate a globally-unique id for client-side models or DOM elements 
+        Generate a globally-unique id for client-side models or DOM elements
         that need one. If <b>prefix</b> is passed, the id will be appended to it.
       </p>
       <pre>
@@ -819,7 +833,7 @@ _.functions();
         Compiles JavaScript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
         data sources. Template functions can both interpolate variables, using<br />
-        <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary JavaScript code, with 
+        <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary JavaScript code, with
         <i>&lt;% &hellip; %&gt;</i>. When you evaluate a template function, pass in a
         <b>context</b> object that has properties corresponding to the template's free
         variables. If you're writing a one-off, you can pass the <b>context</b>
@@ -834,10 +848,10 @@ compiled({name : 'moe'});
 var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&gt;&lt;/li&gt; &lt;% }); %&gt;";
 _.template(list, {people : ['moe', 'curly', 'larry']});
 =&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
-</pre> 
+</pre>
 
       <h2>Chaining</h2>
-      
+
       <p id="chain">
         <b class="header">chain</b><code>_(obj).chain()</code>
         <br />
@@ -861,30 +875,30 @@ _([1, 2, 3]).get();
 </pre>
 
       <h2>Change Log</h2>
-      
+
       <p>
         <b class="header">0.4.0</b><br />
-        All Underscore functions can now be called in an object-oriented style, 
+        All Underscore functions can now be called in an object-oriented style,
         like so: <tt>_([1, 2, 3]).map(...);</tt>. Original patch provided by
-        <a href="http://macournoyer.com/">Marc-André Cournoyer</a>. 
+        <a href="http://macournoyer.com/">Marc-André Cournoyer</a>.
         Wrapped objects can be chained through multiple
-        method invocations. A <a href="#functions"><tt>functions</tt></a> method 
+        method invocations. A <a href="#functions"><tt>functions</tt></a> method
         was added, providing a sorted list of all the functions in Underscore.
       </p>
-      
+
       <p>
         <b class="header">0.3.3</b><br />
         Added the JavaScript 1.8 function <tt>reduceRight</tt>. Aliased it
         as <tt>foldr</tt>, and aliased <tt>reduce</tt> as <tt>foldl</tt>.
       </p>
-      
+
       <p>
         <b class="header">0.3.2</b><br />
-        Now runs on stock <a href="http://www.mozilla.org/rhino/">Rhino</a> 
+        Now runs on stock <a href="http://www.mozilla.org/rhino/">Rhino</a>
         interpreters with: <tt>load("underscore.js")</tt>.
         Added <a href="#identity"><tt>identity</tt></a> as a utility function.
       </p>
-      
+
       <p>
         <b class="header">0.3.1</b><br />
         All iterators are now passed in the original collection as their third
@@ -892,29 +906,29 @@ _([1, 2, 3]).get();
         objects is now called with <tt>(value, key, collection)</tt>, for details
         see <a href="#each"><tt>_.each</tt></a>.
       </p>
-      
+
       <p>
         <b class="header">0.3.0</b><br />
-        Added <a href="http://github.com/dmitryBaranovskiy">Dmitry Baranovskiy</a>'s 
-        comprehensive optimizations, merged in 
-        <a href="http://github.com/kriskowal/">Kris Kowal</a>'s patches to make Underscore 
-        <a href="http://wiki.commonjs.org/wiki/CommonJS">CommonJS</a> and 
+        Added <a href="http://github.com/dmitryBaranovskiy">Dmitry Baranovskiy</a>'s
+        comprehensive optimizations, merged in
+        <a href="http://github.com/kriskowal/">Kris Kowal</a>'s patches to make Underscore
+        <a href="http://wiki.commonjs.org/wiki/CommonJS">CommonJS</a> and
         <a href="http://narwhaljs.org/">Narwhal</a> compliant.
       </p>
-      
+
       <p>
         <b class="header">0.2.0</b><br />
         Added <tt>compose</tt> and <tt>lastIndexOf</tt>, renamed <tt>inject</tt> to
-        <tt>reduce</tt>, added aliases for <tt>inject</tt>, <tt>filter</tt>, 
+        <tt>reduce</tt>, added aliases for <tt>inject</tt>, <tt>filter</tt>,
         <tt>every</tt>, <tt>some</tt>, and <tt>forEach</tt>.
       </p>
-      
+
       <p>
         <b class="header">0.1.1</b><br />
-        Added <tt>noConflict</tt>, so that the "Underscore" object can be assigned to 
+        Added <tt>noConflict</tt>, so that the "Underscore" object can be assigned to
         other variables.
       </p>
-      
+
       <p>
         <b class="header">0.1.0</b><br />
         Initial release of Underscore.js.
@@ -925,9 +939,9 @@ _([1, 2, 3]).get();
           <img src="http://jashkenas.s3.amazonaws.com/images/a_documentcloud_project.png" alt="A DocumentCloud Project" />
         </a>
       </p>
-      
+
     </div>
-    
+
   </div>
 
 </body>
diff --git a/test/utility.js b/test/utility.js
index 171340830..4515ba4c4 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -14,6 +14,15 @@ $(document).ready(function() {
     var moe = {name : 'moe'};
     equals(_.identity(moe), moe, 'moe is the same as his identity');
   });
+  
+  test('utility: breakLoop', function() {
+    var result = null;
+    _([1,2,3,4,5,6]).each(function(num) {
+      result = num;
+      if (num == 3) _.breakLoop();
+    });
+    equals(result, 3, 'broke out of a loop');
+  });
     
   test("utility: uniqueId", function() {
     var ids = [], i = 0;
@@ -22,7 +31,7 @@ $(document).ready(function() {
   });
   
   test("utility: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "clone", "compact", "compose", 
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact", "compose", 
     "defer", "delay", "detect", "each", "every", "extend", "filter", "first", 
     "flatten", "foldl", "foldr", "forEach", "functions", "identity", "include", 
     "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual", 
diff --git a/underscore.js b/underscore.js
index b4db3a9c9..748c6e247 100644
--- a/underscore.js
+++ b/underscore.js
@@ -90,7 +90,7 @@
     _.each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) {
         result = value;
-        throw '__break__';
+        _.breakLoop();
       }
     });
     return result;
@@ -123,7 +123,7 @@
     if (obj.every) return obj.every(iterator, context);
     var result = true;
     _.each(obj, function(value, index, list) {
-      if (!(result = result && iterator.call(context, value, index, list))) throw '__break__';
+      if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
     });
     return result;
   };
@@ -135,7 +135,7 @@
     if (obj.some) return obj.some(iterator, context);
     var result = false;
     _.each(obj, function(value, index, list) {
-      if (result = iterator.call(context, value, index, list)) throw '__break__';
+      if (result = iterator.call(context, value, index, list)) _.breakLoop();
     });
     return result;
   };
@@ -146,7 +146,7 @@
     if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
     var found = false;
     _.each(obj, function(value) {
-      if (found = value === target) throw '__break__';
+      if (found = value === target) _.breakLoop();
     });
     return found;
   };
@@ -446,6 +446,11 @@
     return value;
   };
 
+  // Break out of the middle of an iteration.
+  _.breakLoop = function() {
+    throw "__break__";
+  };
+
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
   var idCounter = 0;

From cb85480659b9bfbe0daa65f4ca22a6e36ddea8e4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 8 Nov 2009 14:18:24 -0500
Subject: [PATCH 050/533] 0.4.1 is out, with array methods proxied for wrapped
 objects, an _.breakLoop(), and an _.isEmpty()

---
 index.html        | 32 +++++++++++++++++++++++++++-----
 test/chaining.js  | 22 +++++++++++++++++-----
 underscore-min.js |  2 +-
 underscore.js     | 25 ++++++++++++++++++++++---
 4 files changed, 67 insertions(+), 14 deletions(-)

diff --git a/index.html b/index.html
index 06de0f1b9..dc65e3f33 100644
--- a/index.html
+++ b/index.html
@@ -81,7 +81,7 @@
     </p>
 
     <p>
-      Underscore provides 45-odd functions that support both the usual
+      Underscore provides 50-odd functions that support both the usual
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash;
       as well as more specialized helpers: function binding, javascript
       templating, deep equality testing, and so on. It delegates to built-in
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.0)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.1)</a></td>
           <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.0)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.1)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -156,6 +156,14 @@ _(lyrics).chain()
 
 =&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
 
+    <p>
+      In addition, the 
+      <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/Array">Array prototype's methods</a> 
+      are proxied through the chained Underscore object, so you can slip a 
+      <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to 
+      modify the array.
+    </p>
+
     <h2>Table of Contents</h2>
 
     <p>
@@ -860,8 +868,13 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
         <a href="#styles">A more realistic example.</a>)
       </p>
       <pre>
-_({moe : false, curly : true}).chain().values().any().isEqual(true).get();
-=&gt; true
+var stooges = [{name : 'curly', age : 25}, {name : 'moe', age : 21}, {name : 'larry', age : 23}];
+var youngest = _(stooges).chain()
+  .sortBy(function(stooge){ return stooge.age; })
+  .map(function(stooge){ return stooge.name + ' is ' + stooge.age; })
+  .first()
+  .get();
+=&gt; "moe is 21"
 </pre>
 
       <p id="get">
@@ -875,6 +888,15 @@ _([1, 2, 3]).get();
 </pre>
 
       <h2>Change Log</h2>
+      
+      <p>
+        <b class="header">0.4.1</b><br />
+        Chained Underscore objects now support the Array prototype methods, so
+        that you can perform the full range of operations on a wrapped array
+        without having to break your chain. Added a <tt>breakLoop</tt> method
+        to <b>break</b> in the middle of any Underscore iteration. Added an 
+        <tt>isEmpty</tt> function that works on arrays and objects.
+      </p>
 
       <p>
         <b class="header">0.4.0</b><br />
diff --git a/test/chaining.js b/test/chaining.js
index 0f3b10037..dc6cef6a4 100644
--- a/test/chaining.js
+++ b/test/chaining.js
@@ -1,7 +1,7 @@
 $(document).ready(function() {
-  
+
   module("Underscore chaining.");
-    
+
   test("chaining: map/flatten/reduce", function() {
     var lyrics = [
       "I'm a lumberjack and I'm okay",
@@ -12,14 +12,14 @@ $(document).ready(function() {
     var counts = _(lyrics).chain()
       .map(function(line) { return line.split(''); })
       .flatten()
-      .reduce({}, function(hash, l) { 
+      .reduce({}, function(hash, l) {
         hash[l] = hash[l] || 0;
         hash[l]++;
         return hash;
     }).get();
     ok(counts['a'] == 16 && counts['e'] == 10, 'counted all the letters in the song');
   });
-  
+
   test("chaining: select/reject/sortBy", function() {
     var numbers = [1,2,3,4,5,6,7,8,9,10];
     numbers = _(numbers).chain().select(function(n) {
@@ -31,5 +31,17 @@ $(document).ready(function() {
     }).get();
     equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
   });
-  
+
+  test("chaining: reverse/concat/unshift/pop/map", function() {
+    var numbers = [1,2,3,4,5];
+    numbers = _(numbers).chain()
+      .reverse()
+      .concat([5, 5, 5])
+      .unshift(17)
+      .pop()
+      .map(function(n){ return n * 2; })
+      .get();
+    equals(numbers.join(', '), "34, 10, 8, 6, 4, 2, 10, 10", 'can chain together array functions.');
+  });
+
 });
diff --git a/underscore-min.js b/underscore-min.js
index 25ad77f4c..e0fd42d76 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-(function(){var b=this;var d=b._;var e=function(f){this._wrapped=f};var c=b._=function(f){return new e(f)};if(typeof exports!=="undefined"){c=exports}c.VERSION="0.4.0";c.each=function(o,m,k){var g=0;try{if(o.forEach){o.forEach(m,k)}else{if(o.length){for(var j=0,f=o.length;j<f;j++){m.call(k,o[j],j,o)}}else{if(o.each){o.each(function(p){m.call(k,p,g++,o)})}else{for(var h in o){if(Object.prototype.hasOwnProperty.call(o,h)){m.call(k,o[h],h,o)}}}}}}catch(n){if(n!="__break__"){throw n}}return o};c.map=function(j,h,g){if(j&&j.map){return j.map(h,g)}var f=[];c.each(j,function(n,k,m){f.push(h.call(g,n,k,m))});return f};c.reduce=function(j,f,h,g){if(j&&j.reduce){return j.reduce(c.bind(h,g),f)}c.each(j,function(n,k,m){f=h.call(g,f,n,k,m)});return f};c.reduceRight=function(j,f,h,g){if(j&&j.reduceRight){return j.reduceRight(c.bind(h,g),f)}var k=c.clone(c.toArray(j)).reverse();c.each(k,function(n,m){f=h.call(g,f,n,m,j)});return f};c.detect=function(j,h,g){var f;c.each(j,function(n,k,m){if(h.call(g,n,k,m)){f=n;throw"__break__"}});return f};c.select=function(j,h,g){if(j.filter){return j.filter(h,g)}var f=[];c.each(j,function(n,k,m){h.call(g,n,k,m)&&f.push(n)});return f};c.reject=function(j,h,g){var f=[];c.each(j,function(n,k,m){!h.call(g,n,k,m)&&f.push(n)});return f};c.all=function(j,h,g){h=h||c.identity;if(j.every){return j.every(h,g)}var f=true;c.each(j,function(n,k,m){if(!(f=f&&h.call(g,n,k,m))){throw"__break__"}});return f};c.any=function(j,h,g){h=h||c.identity;if(j.some){return j.some(h,g)}var f=false;c.each(j,function(n,k,m){if(f=h.call(g,n,k,m)){throw"__break__"}});return f};c.include=function(h,g){if(c.isArray(h)){return c.indexOf(h,g)!=-1}var f=false;c.each(h,function(j){if(f=j===g){throw"__break__"}});return f};c.invoke=function(g,h){var f=c.toArray(arguments).slice(2);return c.map(g,function(j){return(h?j[h]:j).apply(j,f)})};c.pluck=function(g,f){return c.map(g,function(h){return 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\ No newline at end of file
+(function(){var c=this;var e=c._;var f=function(g){this._wrapped=g};var d=c._=function(g){return new f(g)};if(typeof exports!=="undefined"){d=exports}d.VERSION="0.4.1";d.each=function(p,n,m){var h=0;try{if(p.forEach){p.forEach(n,m)}else{if(p.length){for(var k=0,g=p.length;k<g;k++){n.call(m,p[k],k,p)}}else{for(var j in p){if(Object.prototype.hasOwnProperty.call(p,j)){n.call(m,p[j],j,p)}}}}}catch(o){if(o!="__break__"){throw o}}return p};d.map=function(k,j,h){if(k&&k.map){return k.map(j,h)}var g=[];d.each(k,function(o,m,n){g.push(j.call(h,o,m,n))});return g};d.reduce=function(k,g,j,h){if(k&&k.reduce){return k.reduce(d.bind(j,h),g)}d.each(k,function(o,m,n){g=j.call(h,g,o,m,n)});return g};d.reduceRight=function(k,g,j,h){if(k&&k.reduceRight){return k.reduceRight(d.bind(j,h),g)}var m=d.clone(d.toArray(k)).reverse();d.each(m,function(o,n){g=j.call(h,g,o,n,k)});return g};d.detect=function(k,j,h){var g;d.each(k,function(o,m,n){if(j.call(h,o,m,n)){g=o;d.breakLoop()}});return 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j.apply(h,k)}};d.bindAll=function(){var g=d.toArray(arguments);var h=g.pop();d.each(g,function(j){h[j]=d.bind(h[j],h)})};d.delay=function(h,j){var g=d.toArray(arguments).slice(2);return setTimeout(function(){return h.apply(h,g)},j)};d.defer=function(g){return d.delay.apply(d,[g,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(g,h){return function(){var j=[g].concat(d.toArray(arguments));return h.apply(h,j)}};d.compose=function(){var g=d.toArray(arguments);return function(){for(var h=g.length-1;h>=0;h--){arguments=[g[h].apply(this,arguments)]}return arguments[0]}};d.keys=function(g){return d.map(g,function(j,h){return h})};d.values=function(g){return d.map(g,d.identity)};d.extend=function(g,j){for(var h in j){g[h]=j[h]}return g};d.clone=function(g){if(d.isArray(g)){return g.slice(0)}return d.extend({},g)};d.isEqual=function(h,g){if(h===g){return true}var m=typeof(h),o=typeof(g);if(m!=o){return false}if(h==g){return true}if(h.isEqual){return h.isEqual(g)}if(m!=="object"){return false}var j=d.keys(h),n=d.keys(g);if(j.length!=n.length){return false}for(var k in h){if(!d.isEqual(h[k],g[k])){return false}}return true};d.isEmpty=function(g){return(d.isArray(g)?g:d.values(g)).length==0};d.isElement=function(g){return !!(g&&g.nodeType==1)};d.isArray=function(g){return Object.prototype.toString.call(g)=="[object Array]"};d.isFunction=function(g){return Object.prototype.toString.call(g)=="[object Function]"};d.isUndefined=function(g){return typeof g=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(g){return g};d.breakLoop=function(){throw"__break__"};var b=0;d.uniqueId=function(g){var h=b++;return g?g+h:h};d.functions=function(){var h=[];for(var g in d){if(Object.prototype.hasOwnProperty.call(d,g)){h.push(g)}}return d.without(h,"VERSION","prototype","noConflict").sort()};d.template=function(j,h){var g=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+j.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return h?g(h):g};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(h,g){return g?d(h).chain():h};d.each(d.functions(),function(g){f.prototype[g]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[g].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(g){f.prototype[g]=function(){Array.prototype[g].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(g){f.prototype[g]=function(){return a(Array.prototype[g].apply(this._wrapped,arguments),this._chain)}});f.prototype.chain=function(){this._chain=true;return this};f.prototype.get=function(){return this._wrapped}})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 748c6e247..c0fedb145 100644
--- a/underscore.js
+++ b/underscore.js
@@ -28,7 +28,7 @@
   if (typeof exports !== 'undefined') _ = exports;
 
   // Current version.
-  _.VERSION = '0.4.0';
+  _.VERSION = '0.4.1';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -496,12 +496,31 @@
 
   /*------------------------ Setup the OOP Wrapper: --------------------------*/
 
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj, chain) {
+    return chain ? _(obj).chain() : obj;
+  };
+
   // Add all of the Underscore functions to the wrapper object.
   _.each(_.functions(), function(name) {
     wrapper.prototype[name] = function() {
       Array.prototype.unshift.call(arguments, this._wrapped);
-      var result = _[name].apply(_, arguments);
-      return this._chain ? _(result).chain() : result;
+      return result(_[name].apply(_, arguments), this._chain);
+    };
+  });
+
+  // Add all mutator Array functions to the wrapper.
+  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    wrapper.prototype[name] = function() {
+      Array.prototype[name].apply(this._wrapped, arguments);
+      return result(this._wrapped, this._chain);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  _.each(['concat', 'join', 'slice'], function(name) {
+    wrapper.prototype[name] = function() {
+      return result(Array.prototype[name].apply(this._wrapped, arguments), this._chain);
     };
   });
 

From 7127d404d2addc9a8518b95ee34c4bc012c43898 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 8 Nov 2009 14:25:54 -0500
Subject: [PATCH 051/533] correcting documentation

---
 index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index dc65e3f33..753942fcc 100644
--- a/index.html
+++ b/index.html
@@ -232,8 +232,8 @@ _(lyrics).chain()
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
         passed. Each invocation of <b>iterator</b> is called with three arguments:
         <tt>(element, index, list)</tt>. If <b>list</b> is a JavaScript object, <b>iterator</b>'s
-        arguments will be <tt>(value, key, list)</tt>. If the <b>list</b> has an <b>each</b>
-        method of its own, it will be used instead. Delegates to the native
+        arguments will be <tt>(value, key, list)</tt>. Use <a href="#breakLoop"><tt>breakLoop</tt></a> 
+        to break out of the iteration. Delegates to the native
         <b>forEach</b> function if it exists.
       </p>
       <pre>

From f6e67a5bf28bc544b1acd84d168e4f9d58427610 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 9 Nov 2009 08:28:32 -0500
Subject: [PATCH 052/533] version 0.4.2 -- quick patch to rename get() to
 value() for clarity, and adding jQuery comparisons in the speed tests

---
 index.html        | 25 +++++++++++++++----------
 test/chaining.js  |  6 +++---
 test/speed.js     | 34 ++++++++++++++++++++++------------
 underscore-min.js |  2 +-
 underscore.js     |  4 ++--
 5 files changed, 43 insertions(+), 28 deletions(-)

diff --git a/index.html b/index.html
index 753942fcc..3502dde88 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.1)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.2)</a></td>
           <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.1)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.2)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -133,7 +133,7 @@ _([1, 2, 3]).map(function(n){ return n * 2; });</pre>
       Using the object-oriented style allows you to chain together methods. Calling
       <tt>chain</tt> on a wrapped object will cause all future method calls to
       return wrapped objects as well. When you've finished the computation,
-      use <tt>get</tt> to retrieve the final value. Here's an example of chaining
+      use <tt>value</tt> to retrieve the final value. Here's an example of chaining
       together a <b>map/flatten/reduce</b>, in order to get the word count of
       every word in a song.
     </p>
@@ -152,7 +152,7 @@ _(lyrics).chain()
   .reduce({}, function(counts, word) {
     counts[word] = (counts[word] || 0) + 1;
     return counts;
-}).get();
+}).value();
 
 =&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
 
@@ -217,7 +217,7 @@ _(lyrics).chain()
     <p>
       <b>Chaining</b>
       <br />
-      <span class="methods"><a href="#chain">chain</a>, <a href="#get">get</a>
+      <span class="methods"><a href="#chain">chain</a>, <a href="#value">value</a>
     </p>
 
     <div id="documentation">
@@ -864,7 +864,7 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
         <b class="header">chain</b><code>_(obj).chain()</code>
         <br />
         Returns a wrapped object. Calling methods on this object will continue
-        to return wrapped objects until <tt>get</tt> is used. (
+        to return wrapped objects until <tt>value</tt> is used. (
         <a href="#styles">A more realistic example.</a>)
       </p>
       <pre>
@@ -873,22 +873,27 @@ var youngest = _(stooges).chain()
   .sortBy(function(stooge){ return stooge.age; })
   .map(function(stooge){ return stooge.name + ' is ' + stooge.age; })
   .first()
-  .get();
+  .value();
 =&gt; "moe is 21"
 </pre>
 
-      <p id="get">
-        <b class="header">get</b><code>_(obj).get()</code>
+      <p id="value">
+        <b class="header">value</b><code>_(obj).value()</code>
         <br />
         Extracts the value of a wrapped object.
       </p>
       <pre>
-_([1, 2, 3]).get();
+_([1, 2, 3]).value();
 =&gt; [1, 2, 3]
 </pre>
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.2</b><br />
+        Renamed the unwrapping function to <tt>value</tt>, for clarity.
+      </p>
+      
       <p>
         <b class="header">0.4.1</b><br />
         Chained Underscore objects now support the Array prototype methods, so
diff --git a/test/chaining.js b/test/chaining.js
index dc6cef6a4..55f0c8c0d 100644
--- a/test/chaining.js
+++ b/test/chaining.js
@@ -16,7 +16,7 @@ $(document).ready(function() {
         hash[l] = hash[l] || 0;
         hash[l]++;
         return hash;
-    }).get();
+    }).value();
     ok(counts['a'] == 16 && counts['e'] == 10, 'counted all the letters in the song');
   });
 
@@ -28,7 +28,7 @@ $(document).ready(function() {
       return n % 4 == 0;
     }).sortBy(function(n) {
       return -n;
-    }).get();
+    }).value();
     equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
   });
 
@@ -40,7 +40,7 @@ $(document).ready(function() {
       .unshift(17)
       .pop()
       .map(function(n){ return n * 2; })
-      .get();
+      .value();
     equals(numbers.join(', '), "34, 10, 8, 6, 4, 2, 10, 10", 'can chain together array functions.');
   });
 
diff --git a/test/speed.js b/test/speed.js
index ce4f878d6..8313b1d56 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -1,54 +1,64 @@
 (function() {
-  
+
   var numbers = [];
   for (var i=0; i<1000; i++) numbers.push(i);
   var objects = _.map(numbers, function(n){ return {num : n}; });
   var randomized = _.sortBy(numbers, function(){ return Math.random(); });
-  
+
   JSLitmus.test('_.each()', function() {
     var timesTwo = [];
     _.each(numbers, function(num){ timesTwo.push(num * 2); });
     return timesTwo;
   });
-  
+
   JSLitmus.test('_(list).each()', function() {
     var timesTwo = [];
     _(numbers).each(function(num){ timesTwo.push(num * 2); });
     return timesTwo;
   });
-  
+
+  JSLitmus.test('jQuery.each()', function() {
+    var timesTwo = [];
+    jQuery.each(numbers, function(){ timesTwo.push(this * 2); });
+    return timesTwo;
+  });
+
   JSLitmus.test('_.map()', function() {
     return _.map(objects, function(obj){ return obj.num; });
   });
-  
+
+  JSLitmus.test('jQuery.map()', function() {
+    return jQuery.map(objects, function(obj){ return obj.num; });
+  });
+
   JSLitmus.test('_.pluck()', function() {
     return _.pluck(objects, 'num');
   });
-  
+
   JSLitmus.test('_.uniq()', function() {
     return _.uniq(randomized);
   });
-  
+
   JSLitmus.test('_.uniq() (sorted)', function() {
     return _.uniq(numbers, true);
   });
-  
+
   JSLitmus.test('_.sortBy()', function() {
     return _.sortBy(numbers, function(num){ return -num; });
   });
-  
+
   JSLitmus.test('_.isEqual()', function() {
     return _.isEqual(numbers, randomized);
   });
-  
+
   JSLitmus.test('_.keys()', function() {
     return _.keys(objects);
   });
-  
+
   JSLitmus.test('_.values()', function() {
     return _.values(objects);
   });
-  
+
   JSLitmus.test('_.intersect()', function() {
     return _.intersect(numbers, randomized);
   });
diff --git a/underscore-min.js b/underscore-min.js
index e0fd42d76..8ec85c2f2 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-(function(){var c=this;var e=c._;var f=function(g){this._wrapped=g};var d=c._=function(g){return new f(g)};if(typeof exports!=="undefined"){d=exports}d.VERSION="0.4.1";d.each=function(p,n,m){var h=0;try{if(p.forEach){p.forEach(n,m)}else{if(p.length){for(var k=0,g=p.length;k<g;k++){n.call(m,p[k],k,p)}}else{for(var j in p){if(Object.prototype.hasOwnProperty.call(p,j)){n.call(m,p[j],j,p)}}}}}catch(o){if(o!="__break__"){throw o}}return p};d.map=function(k,j,h){if(k&&k.map){return k.map(j,h)}var g=[];d.each(k,function(o,m,n){g.push(j.call(h,o,m,n))});return g};d.reduce=function(k,g,j,h){if(k&&k.reduce){return k.reduce(d.bind(j,h),g)}d.each(k,function(o,m,n){g=j.call(h,g,o,m,n)});return g};d.reduceRight=function(k,g,j,h){if(k&&k.reduceRight){return k.reduceRight(d.bind(j,h),g)}var m=d.clone(d.toArray(k)).reverse();d.each(m,function(o,n){g=j.call(h,g,o,n,k)});return g};d.detect=function(k,j,h){var g;d.each(k,function(o,m,n){if(j.call(h,o,m,n)){g=o;d.breakLoop()}});return g};d.select=function(k,j,h){if(k.filter){return k.filter(j,h)}var g=[];d.each(k,function(o,m,n){j.call(h,o,m,n)&&g.push(o)});return g};d.reject=function(k,j,h){var g=[];d.each(k,function(o,m,n){!j.call(h,o,m,n)&&g.push(o)});return g};d.all=function(k,j,h){j=j||d.identity;if(k.every){return k.every(j,h)}var g=true;d.each(k,function(o,m,n){if(!(g=g&&j.call(h,o,m,n))){d.breakLoop()}});return g};d.any=function(k,j,h){j=j||d.identity;if(k.some){return k.some(j,h)}var g=false;d.each(k,function(o,m,n){if(g=j.call(h,o,m,n)){d.breakLoop()}});return g};d.include=function(j,h){if(d.isArray(j)){return d.indexOf(j,h)!=-1}var g=false;d.each(j,function(k){if(g=k===h){d.breakLoop()}});return g};d.invoke=function(h,j){var g=d.toArray(arguments).slice(2);return d.map(h,function(k){return(j?k[j]:k).apply(k,g)})};d.pluck=function(h,g){return d.map(h,function(j){return j[g]})};d.max=function(k,j,h){if(!j&&d.isArray(k)){return Math.max.apply(Math,k)}var g={computed:-Infinity};d.each(k,function(p,m,o){var n=j?j.call(h,p,m,o):p;n>=g.computed&&(g={value:p,computed:n})});return g.value};d.min=function(k,j,h){if(!j&&d.isArray(k)){return Math.min.apply(Math,k)}var g={computed:Infinity};d.each(k,function(p,m,o){var n=j?j.call(h,p,m,o):p;n<g.computed&&(g={value:p,computed:n})});return g.value};d.sortBy=function(j,h,g){return d.pluck(d.map(j,function(n,k,m){return{value:n,criteria:h.call(g,n,k,m)}}).sort(function(o,n){var m=o.criteria,k=n.criteria;return m<k?-1:m>k?1:0}),"value")};d.sortedIndex=function(n,m,j){j=j||d.identity;var g=0,k=n.length;while(g<k){var h=(g+k)>>1;j(n[h])<j(m)?g=h+1:k=h}return g};d.toArray=function(g){if(!g){return[]}if(d.isArray(g)){return g}return d.map(g,function(h){return h})};d.size=function(g){return d.toArray(g).length};d.first=function(g){return g[0]};d.last=function(g){return g[g.length-1]};d.compact=function(g){return d.select(g,function(h){return !!h})};d.flatten=function(g){return d.reduce(g,[],function(h,j){if(d.isArray(j)){return h.concat(d.flatten(j))}h.push(j);return h})};d.without=function(h){var g=h.slice.call(arguments,0);return d.select(h,function(j){return !d.include(g,j)})};d.uniq=function(h,g){return d.reduce(h,[],function(j,m,k){if(0==k||(g?d.last(j)!=m:!d.include(j,m))){j.push(m)}return j})};d.intersect=function(h){var g=d.toArray(arguments).slice(1);return d.select(d.uniq(h),function(j){return d.all(g,function(k){return d.indexOf(k,j)>=0})})};d.zip=function(){var g=d.toArray(arguments);var k=d.max(d.pluck(g,"length"));var j=new Array(k);for(var h=0;h<k;h++){j[h]=d.pluck(g,String(h))}return j};d.indexOf=function(h,g){if(h.indexOf){return h.indexOf(g)}for(i=0,l=h.length;i<l;i++){if(h[i]===g){return i}}return -1};d.lastIndexOf=function(j,h){if(j.lastIndexOf){return j.lastIndexOf(h)}var g=j.length;while(g--){if(j[g]===h){return g}}return -1};d.bind=function(j,h){h=h||c;var g=d.toArray(arguments).slice(2);return function(){var k=g.concat(d.toArray(arguments));return j.apply(h,k)}};d.bindAll=function(){var g=d.toArray(arguments);var h=g.pop();d.each(g,function(j){h[j]=d.bind(h[j],h)})};d.delay=function(h,j){var g=d.toArray(arguments).slice(2);return setTimeout(function(){return h.apply(h,g)},j)};d.defer=function(g){return d.delay.apply(d,[g,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(g,h){return function(){var j=[g].concat(d.toArray(arguments));return h.apply(h,j)}};d.compose=function(){var g=d.toArray(arguments);return function(){for(var h=g.length-1;h>=0;h--){arguments=[g[h].apply(this,arguments)]}return arguments[0]}};d.keys=function(g){return d.map(g,function(j,h){return h})};d.values=function(g){return d.map(g,d.identity)};d.extend=function(g,j){for(var h in j){g[h]=j[h]}return g};d.clone=function(g){if(d.isArray(g)){return g.slice(0)}return d.extend({},g)};d.isEqual=function(h,g){if(h===g){return true}var m=typeof(h),o=typeof(g);if(m!=o){return false}if(h==g){return true}if(h.isEqual){return h.isEqual(g)}if(m!=="object"){return false}var j=d.keys(h),n=d.keys(g);if(j.length!=n.length){return false}for(var k in h){if(!d.isEqual(h[k],g[k])){return false}}return true};d.isEmpty=function(g){return(d.isArray(g)?g:d.values(g)).length==0};d.isElement=function(g){return !!(g&&g.nodeType==1)};d.isArray=function(g){return Object.prototype.toString.call(g)=="[object Array]"};d.isFunction=function(g){return Object.prototype.toString.call(g)=="[object Function]"};d.isUndefined=function(g){return typeof g=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(g){return g};d.breakLoop=function(){throw"__break__"};var b=0;d.uniqueId=function(g){var h=b++;return g?g+h:h};d.functions=function(){var h=[];for(var g in d){if(Object.prototype.hasOwnProperty.call(d,g)){h.push(g)}}return d.without(h,"VERSION","prototype","noConflict").sort()};d.template=function(j,h){var g=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+j.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return h?g(h):g};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(h,g){return g?d(h).chain():h};d.each(d.functions(),function(g){f.prototype[g]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[g].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(g){f.prototype[g]=function(){Array.prototype[g].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(g){f.prototype[g]=function(){return a(Array.prototype[g].apply(this._wrapped,arguments),this._chain)}});f.prototype.chain=function(){this._chain=true;return this};f.prototype.get=function(){return this._wrapped}})();
\ No newline at end of file
+(function(){var c=this;var e=c._;var f=function(g){this._wrapped=g};var d=c._=function(g){return new f(g)};if(typeof exports!=="undefined"){d=exports}d.VERSION="0.4.2";d.each=function(p,n,m){var h=0;try{if(p.forEach){p.forEach(n,m)}else{if(p.length){for(var k=0,g=p.length;k<g;k++){n.call(m,p[k],k,p)}}else{for(var j in p){if(Object.prototype.hasOwnProperty.call(p,j)){n.call(m,p[j],j,p)}}}}}catch(o){if(o!="__break__"){throw o}}return p};d.map=function(k,j,h){if(k&&k.map){return k.map(j,h)}var g=[];d.each(k,function(o,m,n){g.push(j.call(h,o,m,n))});return g};d.reduce=function(k,g,j,h){if(k&&k.reduce){return k.reduce(d.bind(j,h),g)}d.each(k,function(o,m,n){g=j.call(h,g,o,m,n)});return g};d.reduceRight=function(k,g,j,h){if(k&&k.reduceRight){return k.reduceRight(d.bind(j,h),g)}var m=d.clone(d.toArray(k)).reverse();d.each(m,function(o,n){g=j.call(h,g,o,n,k)});return g};d.detect=function(k,j,h){var g;d.each(k,function(o,m,n){if(j.call(h,o,m,n)){g=o;d.breakLoop()}});return g};d.select=function(k,j,h){if(k.filter){return k.filter(j,h)}var g=[];d.each(k,function(o,m,n){j.call(h,o,m,n)&&g.push(o)});return g};d.reject=function(k,j,h){var g=[];d.each(k,function(o,m,n){!j.call(h,o,m,n)&&g.push(o)});return g};d.all=function(k,j,h){j=j||d.identity;if(k.every){return k.every(j,h)}var g=true;d.each(k,function(o,m,n){if(!(g=g&&j.call(h,o,m,n))){d.breakLoop()}});return g};d.any=function(k,j,h){j=j||d.identity;if(k.some){return k.some(j,h)}var g=false;d.each(k,function(o,m,n){if(g=j.call(h,o,m,n)){d.breakLoop()}});return g};d.include=function(j,h){if(d.isArray(j)){return d.indexOf(j,h)!=-1}var g=false;d.each(j,function(k){if(g=k===h){d.breakLoop()}});return g};d.invoke=function(h,j){var g=d.toArray(arguments).slice(2);return d.map(h,function(k){return(j?k[j]:k).apply(k,g)})};d.pluck=function(h,g){return d.map(h,function(j){return j[g]})};d.max=function(k,j,h){if(!j&&d.isArray(k)){return Math.max.apply(Math,k)}var g={computed:-Infinity};d.each(k,function(p,m,o){var n=j?j.call(h,p,m,o):p;n>=g.computed&&(g={value:p,computed:n})});return g.value};d.min=function(k,j,h){if(!j&&d.isArray(k)){return Math.min.apply(Math,k)}var g={computed:Infinity};d.each(k,function(p,m,o){var n=j?j.call(h,p,m,o):p;n<g.computed&&(g={value:p,computed:n})});return g.value};d.sortBy=function(j,h,g){return d.pluck(d.map(j,function(n,k,m){return{value:n,criteria:h.call(g,n,k,m)}}).sort(function(o,n){var m=o.criteria,k=n.criteria;return m<k?-1:m>k?1:0}),"value")};d.sortedIndex=function(n,m,j){j=j||d.identity;var g=0,k=n.length;while(g<k){var h=(g+k)>>1;j(n[h])<j(m)?g=h+1:k=h}return g};d.toArray=function(g){if(!g){return[]}if(d.isArray(g)){return g}return d.map(g,function(h){return h})};d.size=function(g){return d.toArray(g).length};d.first=function(g){return g[0]};d.last=function(g){return g[g.length-1]};d.compact=function(g){return d.select(g,function(h){return !!h})};d.flatten=function(g){return d.reduce(g,[],function(h,j){if(d.isArray(j)){return h.concat(d.flatten(j))}h.push(j);return h})};d.without=function(h){var g=h.slice.call(arguments,0);return d.select(h,function(j){return !d.include(g,j)})};d.uniq=function(h,g){return d.reduce(h,[],function(j,m,k){if(0==k||(g?d.last(j)!=m:!d.include(j,m))){j.push(m)}return j})};d.intersect=function(h){var g=d.toArray(arguments).slice(1);return d.select(d.uniq(h),function(j){return d.all(g,function(k){return d.indexOf(k,j)>=0})})};d.zip=function(){var g=d.toArray(arguments);var k=d.max(d.pluck(g,"length"));var j=new Array(k);for(var h=0;h<k;h++){j[h]=d.pluck(g,String(h))}return j};d.indexOf=function(h,g){if(h.indexOf){return h.indexOf(g)}for(i=0,l=h.length;i<l;i++){if(h[i]===g){return i}}return -1};d.lastIndexOf=function(j,h){if(j.lastIndexOf){return j.lastIndexOf(h)}var g=j.length;while(g--){if(j[g]===h){return g}}return -1};d.bind=function(j,h){h=h||c;var g=d.toArray(arguments).slice(2);return function(){var k=g.concat(d.toArray(arguments));return j.apply(h,k)}};d.bindAll=function(){var g=d.toArray(arguments);var h=g.pop();d.each(g,function(j){h[j]=d.bind(h[j],h)})};d.delay=function(h,j){var g=d.toArray(arguments).slice(2);return setTimeout(function(){return h.apply(h,g)},j)};d.defer=function(g){return d.delay.apply(d,[g,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(g,h){return function(){var j=[g].concat(d.toArray(arguments));return h.apply(h,j)}};d.compose=function(){var g=d.toArray(arguments);return function(){for(var h=g.length-1;h>=0;h--){arguments=[g[h].apply(this,arguments)]}return arguments[0]}};d.keys=function(g){return d.map(g,function(j,h){return h})};d.values=function(g){return d.map(g,d.identity)};d.extend=function(g,j){for(var h in j){g[h]=j[h]}return g};d.clone=function(g){if(d.isArray(g)){return g.slice(0)}return d.extend({},g)};d.isEqual=function(h,g){if(h===g){return true}var m=typeof(h),o=typeof(g);if(m!=o){return false}if(h==g){return true}if(h.isEqual){return h.isEqual(g)}if(m!=="object"){return false}var j=d.keys(h),n=d.keys(g);if(j.length!=n.length){return false}for(var k in h){if(!d.isEqual(h[k],g[k])){return false}}return true};d.isEmpty=function(g){return(d.isArray(g)?g:d.values(g)).length==0};d.isElement=function(g){return !!(g&&g.nodeType==1)};d.isArray=function(g){return Object.prototype.toString.call(g)=="[object Array]"};d.isFunction=function(g){return Object.prototype.toString.call(g)=="[object Function]"};d.isUndefined=function(g){return typeof g=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(g){return g};d.breakLoop=function(){throw"__break__"};var b=0;d.uniqueId=function(g){var h=b++;return g?g+h:h};d.functions=function(){var h=[];for(var g in d){if(Object.prototype.hasOwnProperty.call(d,g)){h.push(g)}}return d.without(h,"VERSION","prototype","noConflict").sort()};d.template=function(j,h){var g=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+j.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return h?g(h):g};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(h,g){return g?d(h).chain():h};d.each(d.functions(),function(g){f.prototype[g]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[g].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(g){f.prototype[g]=function(){Array.prototype[g].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(g){f.prototype[g]=function(){return a(Array.prototype[g].apply(this._wrapped,arguments),this._chain)}});f.prototype.chain=function(){this._chain=true;return this};f.prototype.value=function(){return this._wrapped}})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index c0fedb145..3dbe9bb9c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -28,7 +28,7 @@
   if (typeof exports !== 'undefined') _ = exports;
 
   // Current version.
-  _.VERSION = '0.4.1';
+  _.VERSION = '0.4.2';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -531,7 +531,7 @@
   };
 
   // Extracts the result from a wrapped and chained object.
-  wrapper.prototype.get = function() {
+  wrapper.prototype.value = function() {
     return this._wrapped;
   };
 

From 111f1cbc0d65e4d6680398091a017a9c4e53d153 Mon Sep 17 00:00:00 2001
From: Tim Caswell <tim@creationix.com>
Date: Mon, 9 Nov 2009 16:46:34 -0600
Subject: [PATCH 053/533] Make the exports system include the wrapper function
 in node.js

---
 underscore-min.js | 2 +-
 underscore.js     | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 8ec85c2f2..20e7c78b1 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
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this._wrapped}})();
\ No newline at end of file
+(function(){var c=this;var e=c._;var f=function(g){this._wrapped=g};var d=c._=function(g){return new f(g)};if(module&&typeof module.exports!=='undefined'){module.exports=d}else{if(typeof exports!=='undefined'){d=exports}}d.VERSION="0.4.2";d.each=function(p,n,m){var h=0;try{if(p.forEach){p.forEach(n,m)}else{if(p.length){for(var k=0,g=p.length;k<g;k++){n.call(m,p[k],k,p)}}else{for(var j in p){if(Object.prototype.hasOwnProperty.call(p,j)){n.call(m,p[j],j,p)}}}}}catch(o){if(o!="__break__"){throw o}}return p};d.map=function(k,j,h){if(k&&k.map){return k.map(j,h)}var g=[];d.each(k,function(o,m,n){g.push(j.call(h,o,m,n))});return g};d.reduce=function(k,g,j,h){if(k&&k.reduce){return k.reduce(d.bind(j,h),g)}d.each(k,function(o,m,n){g=j.call(h,g,o,m,n)});return g};d.reduceRight=function(k,g,j,h){if(k&&k.reduceRight){return k.reduceRight(d.bind(j,h),g)}var m=d.clone(d.toArray(k)).reverse();d.each(m,function(o,n){g=j.call(h,g,o,n,k)});return g};d.detect=function(k,j,h){var 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true}if(h.isEqual){return h.isEqual(g)}if(m!=="object"){return false}var j=d.keys(h),n=d.keys(g);if(j.length!=n.length){return false}for(var k in h){if(!d.isEqual(h[k],g[k])){return false}}return true};d.isEmpty=function(g){return(d.isArray(g)?g:d.values(g)).length==0};d.isElement=function(g){return !!(g&&g.nodeType==1)};d.isArray=function(g){return Object.prototype.toString.call(g)=="[object Array]"};d.isFunction=function(g){return Object.prototype.toString.call(g)=="[object Function]"};d.isUndefined=function(g){return typeof g=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(g){return g};d.breakLoop=function(){throw"__break__"};var b=0;d.uniqueId=function(g){var h=b++;return g?g+h:h};d.functions=function(){var h=[];for(var g in d){if(Object.prototype.hasOwnProperty.call(d,g)){h.push(g)}}return d.without(h,"VERSION","prototype","noConflict").sort()};d.template=function(j,h){var g=new Function("obj","var 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\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 3dbe9bb9c..039bb04c9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -25,7 +25,12 @@
   var _ = root._ = function(obj) { return new wrapper(obj); };
 
   // Export the Underscore object for CommonJS.
-  if (typeof exports !== 'undefined') _ = exports;
+  if (module && typeof module.exports !== 'undefined') {
+    // richer binding for systems that allow it (node.js for example)
+    module.exports = _;
+  } else {
+    if (typeof exports !== 'undefined') _ = exports;
+  }
 
   // Current version.
   _.VERSION = '0.4.2';

From b5e1101610ac5a957e685acf9494e0d297b41d5f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 9 Nov 2009 22:17:47 -0500
Subject: [PATCH 054/533] 0.4.3, with fixed export for CommonJS and
 StopIteration support

---
 index.html        | 14 +++++++++++---
 underscore-min.js |  2 +-
 underscore.js     | 16 +++++++---------
 3 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/index.html b/index.html
index 3502dde88..55a74a7db 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.2)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.3)</a></td>
           <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.2)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.3)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -803,7 +803,9 @@ moe === _.identity(moe);
         <b class="header">breakLoop</b><code>_.breakLoop()</code>
         <br />
         Breaks out of the current loop iteration. Similar to the <tt>break</tt>
-        keyword in regular "for" loop, but works within an iterator function.
+        keyword in regular "for" loop, but works within an iterator function. 
+        Uses the native <tt>StopIteration</tt> object in JavaScript 1.7 compliant
+        browsers.
       </p>
       <pre>
 var result = null;
@@ -889,6 +891,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.3</b><br />
+        Started using the native StopIteration object in browsers that support it.
+        Fixed Underscore setup for CommonJS environments.
+      </p>
+      
       <p>
         <b class="header">0.4.2</b><br />
         Renamed the unwrapping function to <tt>value</tt>, for clarity.
diff --git a/underscore-min.js b/underscore-min.js
index 20e7c78b1..0e6235f5d 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
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k=g.concat(d.toArray(arguments));return j.apply(h,k)}};d.bindAll=function(){var g=d.toArray(arguments);var h=g.pop();d.each(g,function(j){h[j]=d.bind(h[j],h)})};d.delay=function(h,j){var g=d.toArray(arguments).slice(2);return setTimeout(function(){return h.apply(h,g)},j)};d.defer=function(g){return d.delay.apply(d,[g,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(g,h){return function(){var j=[g].concat(d.toArray(arguments));return h.apply(h,j)}};d.compose=function(){var g=d.toArray(arguments);return function(){for(var h=g.length-1;h>=0;h--){arguments=[g[h].apply(this,arguments)]}return arguments[0]}};d.keys=function(g){return d.map(g,function(j,h){return h})};d.values=function(g){return d.map(g,d.identity)};d.extend=function(g,j){for(var h in j){g[h]=j[h]}return g};d.clone=function(g){if(d.isArray(g)){return g.slice(0)}return d.extend({},g)};d.isEqual=function(h,g){if(h===g){return true}var m=typeof(h),o=typeof(g);if(m!=o){return false}if(h==g){return true}if(h.isEqual){return h.isEqual(g)}if(m!=="object"){return false}var j=d.keys(h),n=d.keys(g);if(j.length!=n.length){return false}for(var k in h){if(!d.isEqual(h[k],g[k])){return false}}return true};d.isEmpty=function(g){return(d.isArray(g)?g:d.values(g)).length==0};d.isElement=function(g){return !!(g&&g.nodeType==1)};d.isArray=function(g){return Object.prototype.toString.call(g)=="[object Array]"};d.isFunction=function(g){return Object.prototype.toString.call(g)=="[object Function]"};d.isUndefined=function(g){return typeof g=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(g){return g};d.breakLoop=function(){throw"__break__"};var b=0;d.uniqueId=function(g){var h=b++;return g?g+h:h};d.functions=function(){var h=[];for(var g in d){if(Object.prototype.hasOwnProperty.call(d,g)){h.push(g)}}return d.without(h,"VERSION","prototype","noConflict").sort()};d.template=function(j,h){var g=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+j.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return h?g(h):g};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(h,g){return g?d(h).chain():h};d.each(d.functions(),function(g){f.prototype[g]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[g].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(g){f.prototype[g]=function(){Array.prototype[g].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(g){f.prototype[g]=function(){return a(Array.prototype[g].apply(this._wrapped,arguments),this._chain)}});f.prototype.chain=function(){this._chain=true;return this};f.prototype.value=function(){return this._wrapped}})();
\ No newline at end of file
+(function(){var c=this;var e=c._;var g=function(h){this._wrapped=h};var f=typeof StopIteration!=="undefined"?StopIteration:"__break__";var d=c._=function(h){return new g(h)};if(typeof exports!=="undefined"){exports._=d}d.VERSION="0.4.3";d.each=function(q,o,n){var j=0;try{if(q.forEach){q.forEach(o,n)}else{if(q.length){for(var m=0,h=q.length;m<h;m++){o.call(n,q[m],m,q)}}else{for(var k in q){if(Object.prototype.hasOwnProperty.call(q,k)){o.call(n,q[k],k,q)}}}}}catch(p){if(p!=f){throw p}}return q};d.map=function(m,k,j){if(m&&m.map){return m.map(k,j)}var h=[];d.each(m,function(p,n,o){h.push(k.call(j,p,n,o))});return h};d.reduce=function(m,h,k,j){if(m&&m.reduce){return m.reduce(d.bind(k,j),h)}d.each(m,function(p,n,o){h=k.call(j,h,p,n,o)});return h};d.reduceRight=function(m,h,k,j){if(m&&m.reduceRight){return m.reduceRight(d.bind(k,j),h)}var n=d.clone(d.toArray(m)).reverse();d.each(n,function(p,o){h=k.call(j,h,p,o,m)});return h};d.detect=function(m,k,j){var h;d.each(m,function(p,n,o){if(k.call(j,p,n,o)){h=p;d.breakLoop()}});return h};d.select=function(m,k,j){if(m.filter){return m.filter(k,j)}var h=[];d.each(m,function(p,n,o){k.call(j,p,n,o)&&h.push(p)});return h};d.reject=function(m,k,j){var h=[];d.each(m,function(p,n,o){!k.call(j,p,n,o)&&h.push(p)});return h};d.all=function(m,k,j){k=k||d.identity;if(m.every){return m.every(k,j)}var h=true;d.each(m,function(p,n,o){if(!(h=h&&k.call(j,p,n,o))){d.breakLoop()}});return h};d.any=function(m,k,j){k=k||d.identity;if(m.some){return m.some(k,j)}var h=false;d.each(m,function(p,n,o){if(h=k.call(j,p,n,o)){d.breakLoop()}});return h};d.include=function(k,j){if(d.isArray(k)){return d.indexOf(k,j)!=-1}var h=false;d.each(k,function(m){if(h=m===j){d.breakLoop()}});return h};d.invoke=function(j,k){var h=d.toArray(arguments).slice(2);return d.map(j,function(m){return(k?m[k]:m).apply(m,h)})};d.pluck=function(j,h){return d.map(j,function(k){return k[h]})};d.max=function(m,k,j){if(!k&&d.isArray(m)){return Math.max.apply(Math,m)}var h={computed:-Infinity};d.each(m,function(q,n,p){var o=k?k.call(j,q,n,p):q;o>=h.computed&&(h={value:q,computed:o})});return h.value};d.min=function(m,k,j){if(!k&&d.isArray(m)){return Math.min.apply(Math,m)}var h={computed:Infinity};d.each(m,function(q,n,p){var o=k?k.call(j,q,n,p):q;o<h.computed&&(h={value:q,computed:o})});return h.value};d.sortBy=function(k,j,h){return d.pluck(d.map(k,function(o,m,n){return{value:o,criteria:j.call(h,o,m,n)}}).sort(function(p,o){var n=p.criteria,m=o.criteria;return n<m?-1:n>m?1:0}),"value")};d.sortedIndex=function(o,n,k){k=k||d.identity;var h=0,m=o.length;while(h<m){var j=(h+m)>>1;k(o[j])<k(n)?h=j+1:m=j}return h};d.toArray=function(h){if(!h){return[]}if(d.isArray(h)){return h}return d.map(h,function(j){return j})};d.size=function(h){return d.toArray(h).length};d.first=function(h){return h[0]};d.last=function(h){return h[h.length-1]};d.compact=function(h){return d.select(h,function(j){return !!j})};d.flatten=function(h){return d.reduce(h,[],function(j,k){if(d.isArray(k)){return j.concat(d.flatten(k))}j.push(k);return j})};d.without=function(j){var h=j.slice.call(arguments,0);return d.select(j,function(k){return !d.include(h,k)})};d.uniq=function(j,h){return d.reduce(j,[],function(k,n,m){if(0==m||(h?d.last(k)!=n:!d.include(k,n))){k.push(n)}return k})};d.intersect=function(j){var h=d.toArray(arguments).slice(1);return d.select(d.uniq(j),function(k){return d.all(h,function(m){return d.indexOf(m,k)>=0})})};d.zip=function(){var h=d.toArray(arguments);var m=d.max(d.pluck(h,"length"));var k=new Array(m);for(var j=0;j<m;j++){k[j]=d.pluck(h,String(j))}return k};d.indexOf=function(j,h){if(j.indexOf){return j.indexOf(h)}for(i=0,l=j.length;i<l;i++){if(j[i]===h){return i}}return -1};d.lastIndexOf=function(k,j){if(k.lastIndexOf){return k.lastIndexOf(j)}var h=k.length;while(h--){if(k[h]===j){return h}}return -1};d.bind=function(k,j){j=j||c;var h=d.toArray(arguments).slice(2);return function(){var m=h.concat(d.toArray(arguments));return k.apply(j,m)}};d.bindAll=function(){var h=d.toArray(arguments);var j=h.pop();d.each(h,function(k){j[k]=d.bind(j[k],j)})};d.delay=function(j,k){var h=d.toArray(arguments).slice(2);return setTimeout(function(){return j.apply(j,h)},k)};d.defer=function(h){return d.delay.apply(d,[h,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(h,j){return function(){var k=[h].concat(d.toArray(arguments));return j.apply(j,k)}};d.compose=function(){var h=d.toArray(arguments);return function(){for(var j=h.length-1;j>=0;j--){arguments=[h[j].apply(this,arguments)]}return arguments[0]}};d.keys=function(h){return d.map(h,function(k,j){return j})};d.values=function(h){return d.map(h,d.identity)};d.extend=function(h,k){for(var j in k){h[j]=k[j]}return h};d.clone=function(h){if(d.isArray(h)){return h.slice(0)}return d.extend({},h)};d.isEqual=function(j,h){if(j===h){return true}var n=typeof(j),p=typeof(h);if(n!=p){return false}if(j==h){return true}if(j.isEqual){return j.isEqual(h)}if(n!=="object"){return false}var k=d.keys(j),o=d.keys(h);if(k.length!=o.length){return false}for(var m in j){if(!d.isEqual(j[m],h[m])){return false}}return true};d.isEmpty=function(h){return(d.isArray(h)?h:d.values(h)).length==0};d.isElement=function(h){return !!(h&&h.nodeType==1)};d.isArray=function(h){return Object.prototype.toString.call(h)=="[object Array]"};d.isFunction=function(h){return Object.prototype.toString.call(h)=="[object Function]"};d.isUndefined=function(h){return typeof h=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(h){return h};d.breakLoop=function(){throw f};var b=0;d.uniqueId=function(h){var j=b++;return h?h+j:j};d.functions=function(){var j=[];for(var h in d){if(Object.prototype.hasOwnProperty.call(d,h)){j.push(h)}}return d.without(j,"VERSION","prototype","noConflict").sort()};d.template=function(k,j){var h=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+k.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return j?h(j):h};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(j,h){return h?d(j).chain():j};d.each(d.functions(),function(h){g.prototype[h]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[h].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(h){g.prototype[h]=function(){Array.prototype[h].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(h){g.prototype[h]=function(){return a(Array.prototype[h].apply(this._wrapped,arguments),this._chain)}});g.prototype.chain=function(){this._chain=true;return this};g.prototype.value=function(){return this._wrapped}})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 039bb04c9..99e738419 100644
--- a/underscore.js
+++ b/underscore.js
@@ -21,19 +21,17 @@
   // underscore functions. Wrapped objects may be chained.
   var wrapper = function(obj) { this._wrapped = obj; };
 
+  // Establish the object that gets thrown to break out of a loop iteration.
+  var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
+
   // Create a safe reference to the Underscore object for reference below.
   var _ = root._ = function(obj) { return new wrapper(obj); };
 
   // Export the Underscore object for CommonJS.
-  if (module && typeof module.exports !== 'undefined') {
-    // richer binding for systems that allow it (node.js for example)
-    module.exports = _;
-  } else {
-    if (typeof exports !== 'undefined') _ = exports;
-  }
+  if (typeof exports !== 'undefined') exports._ = _;
 
   // Current version.
-  _.VERSION = '0.4.2';
+  _.VERSION = '0.4.3';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -52,7 +50,7 @@
         }
       }
     } catch(e) {
-      if (e != '__break__') throw e;
+      if (e != breaker) throw e;
     }
     return obj;
   };
@@ -453,7 +451,7 @@
 
   // Break out of the middle of an iteration.
   _.breakLoop = function() {
-    throw "__break__";
+    throw breaker;
   };
 
   // Generate a unique integer id (unique within the entire client session).

From 80939448a70ee494a562aacc055228bce6d893c6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 12 Nov 2009 21:31:03 -0500
Subject: [PATCH 055/533] fixing broken _.breakLoop test -- implementation was
 fine, test was out of date.

---
 test/collections.js | 74 ++++++++++++++++++++++-----------------------
 1 file changed, 37 insertions(+), 37 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 1a6f5992d..c0bfe1ee8 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -1,89 +1,89 @@
 $(document).ready(function() {
-  
+
   module("Collection functions (each, any, select, and so on...)");
-    
+
   test("collections: each", function() {
     _.each([1, 2, 3], function(num, i) {
       equals(num, i + 1, 'each iterators provide value and iteration count');
     });
-    
+
     var answer = null;
-    _.each([1, 2, 3], function(num){ if ((answer = num) == 2) throw '__break__'; });
+    _.each([1, 2, 3], function(num){ if ((answer = num) == 2) _.breakLoop(); });
     equals(answer, 2, 'the loop broke in the middle');
-    
+
     var answers = [];
     _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
-    
+
     answers = [];
     _.each("moe", function(letter){ answers.push(letter); });
     equals(answers.join(', '), 'm, o, e', 'iterates over the letters in strings');
-    
+
     answers = [];
     _.forEach([1, 2, 3], function(num){ answers.push(num); });
     equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
-    
+
     answers = [];
     var obj = {one : 1, two : 2, three : 3};
     obj.constructor.prototype.four = 4;
     _.each(obj, function(value, key){ answers.push(key); });
     equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
-    
+
     answer = null;
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
-    ok(answer, 'can reference the original collection from inside the iterator');    
+    ok(answer, 'can reference the original collection from inside the iterator');
   });
-  
+
   test('collections: map', function() {
     var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
-    
+
     var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
     equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
-    
+
     var doubled = _([1, 2, 3]).map(function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
   });
-  
+
   test('collections: reduce', function() {
     var sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'can sum up an array');
-    
+
     var context = {multiplier : 3};
     sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num * this.multiplier; }, context);
     equals(sum, 18, 'can reduce with a context object');
-    
+
     sum = _.inject([1, 2, 3], 0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'aliased as "inject"');
-    
+
     sum = _([1, 2, 3]).reduce(0, function(sum, num){ return sum + num; });
     equals(sum, 6, 'OO-style reduce');
   });
-  
+
   test('collections: reduceRight', function() {
     var list = _.foldr([1, 2, 3], '', function(memo, num){ return memo + num; });
     equals(list, '321', 'can perform right folds');
   });
-  
+
   test('collections: detect', function() {
     var result = _.detect([1, 2, 3], function(num){ return num * 2 == 4; });
     equals(result, 2, 'found the first "2" and broke the loop');
   });
-  
+
   test('collections: select', function() {
     var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
     equals(evens.join(', '), '2, 4, 6', 'selected each even number');
-    
+
     evens = _.filter([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
     equals(evens.join(', '), '2, 4, 6', 'aliased as "filter"');
   });
-  
+
   test('collections: reject', function() {
     var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
     equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
   });
-  
+
   test('collections: all', function() {
     ok(_.all([]), 'the empty set');
     ok(_.all([true, true, true]), 'all true values');
@@ -92,7 +92,7 @@ $(document).ready(function() {
     ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
     ok(_.every([true, true, true]), 'aliased as "every"');
   });
-  
+
   test('collections: any', function() {
     ok(!_.any([]), 'the empty set');
     ok(!_.any([false, false, false]), 'all false values');
@@ -101,62 +101,62 @@ $(document).ready(function() {
     ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
     ok(_.some([false, false, true]), 'aliased as "some"');
   });
-  
+
   test('collections: include', function() {
     ok(_.include([1,2,3], 2), 'two is in the array');
     ok(!_.include([1,3,9], 2), 'two is not in the array');
     ok(_.include({moe:1, larry:3, curly:9}, 3), '_.include on objects checks their values');
     ok(_([1,2,3]).include(2), 'OO-style include');
   });
-  
+
   test('collections: invoke', function() {
     var list = [[5, 1, 7], [3, 2, 1]];
     var result = _.invoke(list, 'sort');
     equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
     equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
   });
-  
+
   test('collections: pluck', function() {
     var people = [{name : 'moe', age : 30}, {name : 'curly', age : 50}];
     equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'pulls names out of objects');
   });
-  
+
   test('collections: max', function() {
     equals(3, _.max([1, 2, 3]), 'can perform a regular Math.max');
-    
+
     var neg = _.max([1, 2, 3], function(num){ return -num; });
     equals(neg, 1, 'can perform a computation-based max');
   });
-  
+
   test('collections: min', function() {
     equals(1, _.min([1, 2, 3]), 'can perform a regular Math.min');
-    
+
     var neg = _.min([1, 2, 3], function(num){ return -num; });
     equals(neg, 3, 'can perform a computation-based min');
   });
-  
+
   test('collections: sortBy', function() {
     var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}];
     people = _.sortBy(people, function(person){ return person.age; });
     equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
   });
-  
+
   test('collections: sortedIndex', function() {
     var numbers = [10, 20, 30, 40, 50], num = 35;
     var index = _.sortedIndex(numbers, num);
     equals(index, 3, '35 should be inserted at index 3');
   });
-  
+
   test('collections: toArray', function() {
     ok(!_.isArray(arguments), 'arguments object is not an array');
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
-    
+
     var numbers = _.toArray({one : 1, two : 2, three : 3});
     equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
   });
-  
+
   test('collections: size', function() {
     equals(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
   });
-  
+
 });

From b932867dec302b6a36cab60aa664b2081391b791 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 14 Nov 2009 08:31:42 -0500
Subject: [PATCH 056/533] regression fix: implied global 'i' in _.indexOf() --
 thanks to Sveinung Rosaker.

---
 underscore-min.js | 2 +-
 underscore.js     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 0e6235f5d..dcc64d912 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1 @@
-(function(){var c=this;var e=c._;var g=function(h){this._wrapped=h};var f=typeof StopIteration!=="undefined"?StopIteration:"__break__";var d=c._=function(h){return new g(h)};if(typeof exports!=="undefined"){exports._=d}d.VERSION="0.4.3";d.each=function(q,o,n){var j=0;try{if(q.forEach){q.forEach(o,n)}else{if(q.length){for(var m=0,h=q.length;m<h;m++){o.call(n,q[m],m,q)}}else{for(var k in q){if(Object.prototype.hasOwnProperty.call(q,k)){o.call(n,q[k],k,q)}}}}}catch(p){if(p!=f){throw p}}return q};d.map=function(m,k,j){if(m&&m.map){return m.map(k,j)}var h=[];d.each(m,function(p,n,o){h.push(k.call(j,p,n,o))});return h};d.reduce=function(m,h,k,j){if(m&&m.reduce){return m.reduce(d.bind(k,j),h)}d.each(m,function(p,n,o){h=k.call(j,h,p,n,o)});return h};d.reduceRight=function(m,h,k,j){if(m&&m.reduceRight){return m.reduceRight(d.bind(k,j),h)}var n=d.clone(d.toArray(m)).reverse();d.each(n,function(p,o){h=k.call(j,h,p,o,m)});return h};d.detect=function(m,k,j){var h;d.each(m,function(p,n,o){if(k.call(j,p,n,o)){h=p;d.breakLoop()}});return h};d.select=function(m,k,j){if(m.filter){return m.filter(k,j)}var h=[];d.each(m,function(p,n,o){k.call(j,p,n,o)&&h.push(p)});return h};d.reject=function(m,k,j){var h=[];d.each(m,function(p,n,o){!k.call(j,p,n,o)&&h.push(p)});return h};d.all=function(m,k,j){k=k||d.identity;if(m.every){return m.every(k,j)}var h=true;d.each(m,function(p,n,o){if(!(h=h&&k.call(j,p,n,o))){d.breakLoop()}});return h};d.any=function(m,k,j){k=k||d.identity;if(m.some){return m.some(k,j)}var h=false;d.each(m,function(p,n,o){if(h=k.call(j,p,n,o)){d.breakLoop()}});return h};d.include=function(k,j){if(d.isArray(k)){return d.indexOf(k,j)!=-1}var h=false;d.each(k,function(m){if(h=m===j){d.breakLoop()}});return h};d.invoke=function(j,k){var h=d.toArray(arguments).slice(2);return d.map(j,function(m){return(k?m[k]:m).apply(m,h)})};d.pluck=function(j,h){return d.map(j,function(k){return k[h]})};d.max=function(m,k,j){if(!k&&d.isArray(m)){return Math.max.apply(Math,m)}var h={computed:-Infinity};d.each(m,function(q,n,p){var o=k?k.call(j,q,n,p):q;o>=h.computed&&(h={value:q,computed:o})});return h.value};d.min=function(m,k,j){if(!k&&d.isArray(m)){return Math.min.apply(Math,m)}var h={computed:Infinity};d.each(m,function(q,n,p){var o=k?k.call(j,q,n,p):q;o<h.computed&&(h={value:q,computed:o})});return h.value};d.sortBy=function(k,j,h){return d.pluck(d.map(k,function(o,m,n){return{value:o,criteria:j.call(h,o,m,n)}}).sort(function(p,o){var n=p.criteria,m=o.criteria;return n<m?-1:n>m?1:0}),"value")};d.sortedIndex=function(o,n,k){k=k||d.identity;var h=0,m=o.length;while(h<m){var j=(h+m)>>1;k(o[j])<k(n)?h=j+1:m=j}return h};d.toArray=function(h){if(!h){return[]}if(d.isArray(h)){return h}return d.map(h,function(j){return j})};d.size=function(h){return d.toArray(h).length};d.first=function(h){return h[0]};d.last=function(h){return h[h.length-1]};d.compact=function(h){return d.select(h,function(j){return !!j})};d.flatten=function(h){return d.reduce(h,[],function(j,k){if(d.isArray(k)){return j.concat(d.flatten(k))}j.push(k);return j})};d.without=function(j){var h=j.slice.call(arguments,0);return d.select(j,function(k){return !d.include(h,k)})};d.uniq=function(j,h){return d.reduce(j,[],function(k,n,m){if(0==m||(h?d.last(k)!=n:!d.include(k,n))){k.push(n)}return k})};d.intersect=function(j){var h=d.toArray(arguments).slice(1);return d.select(d.uniq(j),function(k){return d.all(h,function(m){return d.indexOf(m,k)>=0})})};d.zip=function(){var h=d.toArray(arguments);var m=d.max(d.pluck(h,"length"));var k=new Array(m);for(var j=0;j<m;j++){k[j]=d.pluck(h,String(j))}return k};d.indexOf=function(j,h){if(j.indexOf){return j.indexOf(h)}for(i=0,l=j.length;i<l;i++){if(j[i]===h){return i}}return -1};d.lastIndexOf=function(k,j){if(k.lastIndexOf){return k.lastIndexOf(j)}var h=k.length;while(h--){if(k[h]===j){return h}}return -1};d.bind=function(k,j){j=j||c;var h=d.toArray(arguments).slice(2);return function(){var m=h.concat(d.toArray(arguments));return k.apply(j,m)}};d.bindAll=function(){var h=d.toArray(arguments);var j=h.pop();d.each(h,function(k){j[k]=d.bind(j[k],j)})};d.delay=function(j,k){var h=d.toArray(arguments).slice(2);return setTimeout(function(){return j.apply(j,h)},k)};d.defer=function(h){return d.delay.apply(d,[h,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(h,j){return function(){var k=[h].concat(d.toArray(arguments));return j.apply(j,k)}};d.compose=function(){var h=d.toArray(arguments);return function(){for(var j=h.length-1;j>=0;j--){arguments=[h[j].apply(this,arguments)]}return arguments[0]}};d.keys=function(h){return d.map(h,function(k,j){return j})};d.values=function(h){return d.map(h,d.identity)};d.extend=function(h,k){for(var j in k){h[j]=k[j]}return h};d.clone=function(h){if(d.isArray(h)){return h.slice(0)}return d.extend({},h)};d.isEqual=function(j,h){if(j===h){return true}var n=typeof(j),p=typeof(h);if(n!=p){return false}if(j==h){return true}if(j.isEqual){return j.isEqual(h)}if(n!=="object"){return false}var k=d.keys(j),o=d.keys(h);if(k.length!=o.length){return false}for(var m in j){if(!d.isEqual(j[m],h[m])){return false}}return true};d.isEmpty=function(h){return(d.isArray(h)?h:d.values(h)).length==0};d.isElement=function(h){return !!(h&&h.nodeType==1)};d.isArray=function(h){return Object.prototype.toString.call(h)=="[object Array]"};d.isFunction=function(h){return Object.prototype.toString.call(h)=="[object Function]"};d.isUndefined=function(h){return typeof h=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(h){return h};d.breakLoop=function(){throw f};var b=0;d.uniqueId=function(h){var j=b++;return h?h+j:j};d.functions=function(){var j=[];for(var h in d){if(Object.prototype.hasOwnProperty.call(d,h)){j.push(h)}}return d.without(j,"VERSION","prototype","noConflict").sort()};d.template=function(k,j){var h=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+k.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return j?h(j):h};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(j,h){return h?d(j).chain():j};d.each(d.functions(),function(h){g.prototype[h]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[h].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(h){g.prototype[h]=function(){Array.prototype[h].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(h){g.prototype[h]=function(){return a(Array.prototype[h].apply(this._wrapped,arguments),this._chain)}});g.prototype.chain=function(){this._chain=true;return this};g.prototype.value=function(){return this._wrapped}})();
\ No newline at end of file
+(function(){var c=this;var e=c._;var g=function(h){this._wrapped=h};var f=typeof StopIteration!=="undefined"?StopIteration:"__break__";var d=c._=function(h){return new g(h)};if(typeof exports!=="undefined"){exports._=d}d.VERSION="0.4.3";d.each=function(q,o,n){var j=0;try{if(q.forEach){q.forEach(o,n)}else{if(q.length){for(var m=0,h=q.length;m<h;m++){o.call(n,q[m],m,q)}}else{for(var k in q){if(Object.prototype.hasOwnProperty.call(q,k)){o.call(n,q[k],k,q)}}}}}catch(p){if(p!=f){throw p}}return q};d.map=function(k,j,i){if(k&&k.map){return k.map(j,i)}var h=[];d.each(k,function(n,l,m){h.push(j.call(i,n,l,m))});return h};d.reduce=function(k,h,j,i){if(k&&k.reduce){return k.reduce(d.bind(j,i),h)}d.each(k,function(n,l,m){h=j.call(i,h,n,l,m)});return h};d.reduceRight=function(k,h,j,i){if(k&&k.reduceRight){return k.reduceRight(d.bind(j,i),h)}var l=d.clone(d.toArray(k)).reverse();d.each(l,function(n,m){h=j.call(i,h,n,m,k)});return h};d.detect=function(k,j,i){var h;d.each(k,function(n,l,m){if(j.call(i,n,l,m)){h=n;d.breakLoop()}});return h};d.select=function(k,j,i){if(k.filter){return k.filter(j,i)}var h=[];d.each(k,function(n,l,m){j.call(i,n,l,m)&&h.push(n)});return h};d.reject=function(k,j,i){var h=[];d.each(k,function(n,l,m){!j.call(i,n,l,m)&&h.push(n)});return h};d.all=function(k,j,i){j=j||d.identity;if(k.every){return k.every(j,i)}var h=true;d.each(k,function(n,l,m){if(!(h=h&&j.call(i,n,l,m))){d.breakLoop()}});return h};d.any=function(k,j,i){j=j||d.identity;if(k.some){return k.some(j,i)}var h=false;d.each(k,function(n,l,m){if(h=j.call(i,n,l,m)){d.breakLoop()}});return h};d.include=function(j,i){if(d.isArray(j)){return d.indexOf(j,i)!=-1}var h=false;d.each(j,function(k){if(h=k===i){d.breakLoop()}});return h};d.invoke=function(i,j){var h=d.toArray(arguments).slice(2);return d.map(i,function(k){return(j?k[j]:k).apply(k,h)})};d.pluck=function(i,h){return d.map(i,function(j){return j[h]})};d.max=function(k,j,i){if(!j&&d.isArray(k)){return Math.max.apply(Math,k)}var h={computed:-Infinity};d.each(k,function(o,l,n){var m=j?j.call(i,o,l,n):o;m>=h.computed&&(h={value:o,computed:m})});return h.value};d.min=function(k,j,i){if(!j&&d.isArray(k)){return Math.min.apply(Math,k)}var h={computed:Infinity};d.each(k,function(o,l,n){var m=j?j.call(i,o,l,n):o;m<h.computed&&(h={value:o,computed:m})});return h.value};d.sortBy=function(j,i,h){return d.pluck(d.map(j,function(m,k,l){return{value:m,criteria:i.call(h,m,k,l)}}).sort(function(n,m){var l=n.criteria,k=m.criteria;return l<k?-1:l>k?1:0}),"value")};d.sortedIndex=function(m,l,j){j=j||d.identity;var h=0,k=m.length;while(h<k){var i=(h+k)>>1;j(m[i])<j(l)?h=i+1:k=i}return h};d.toArray=function(h){if(!h){return[]}if(d.isArray(h)){return h}return d.map(h,function(i){return i})};d.size=function(h){return d.toArray(h).length};d.first=function(h){return h[0]};d.last=function(h){return h[h.length-1]};d.compact=function(h){return d.select(h,function(i){return !!i})};d.flatten=function(h){return d.reduce(h,[],function(i,j){if(d.isArray(j)){return i.concat(d.flatten(j))}i.push(j);return i})};d.without=function(i){var h=i.slice.call(arguments,0);return d.select(i,function(j){return !d.include(h,j)})};d.uniq=function(i,h){return d.reduce(i,[],function(j,l,k){if(0==k||(h?d.last(j)!=l:!d.include(j,l))){j.push(l)}return j})};d.intersect=function(i){var h=d.toArray(arguments).slice(1);return d.select(d.uniq(i),function(j){return d.all(h,function(k){return d.indexOf(k,j)>=0})})};d.zip=function(){var h=d.toArray(arguments);var l=d.max(d.pluck(h,"length"));var k=new Array(l);for(var j=0;j<l;j++){k[j]=d.pluck(h,String(j))}return k};d.indexOf=function(m,k){if(m.indexOf){return m.indexOf(k)}for(var j=0,h=m.length;j<h;j++){if(m[j]===k){return j}}return -1};d.lastIndexOf=function(k,j){if(k.lastIndexOf){return k.lastIndexOf(j)}var h=k.length;while(h--){if(k[h]===j){return h}}return -1};d.bind=function(j,i){i=i||c;var h=d.toArray(arguments).slice(2);return function(){var k=h.concat(d.toArray(arguments));return j.apply(i,k)}};d.bindAll=function(){var h=d.toArray(arguments);var i=h.pop();d.each(h,function(j){i[j]=d.bind(i[j],i)})};d.delay=function(i,j){var h=d.toArray(arguments).slice(2);return setTimeout(function(){return i.apply(i,h)},j)};d.defer=function(h){return d.delay.apply(d,[h,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(h,i){return function(){var j=[h].concat(d.toArray(arguments));return i.apply(i,j)}};d.compose=function(){var h=d.toArray(arguments);return function(){for(var j=h.length-1;j>=0;j--){arguments=[h[j].apply(this,arguments)]}return arguments[0]}};d.keys=function(h){return d.map(h,function(j,i){return i})};d.values=function(h){return d.map(h,d.identity)};d.extend=function(h,j){for(var i in j){h[i]=j[i]}return h};d.clone=function(h){if(d.isArray(h)){return h.slice(0)}return d.extend({},h)};d.isEqual=function(i,h){if(i===h){return true}var l=typeof(i),n=typeof(h);if(l!=n){return false}if(i==h){return true}if(i.isEqual){return i.isEqual(h)}if(l!=="object"){return false}var j=d.keys(i),m=d.keys(h);if(j.length!=m.length){return false}for(var k in i){if(!d.isEqual(i[k],h[k])){return false}}return true};d.isEmpty=function(h){return(d.isArray(h)?h:d.values(h)).length==0};d.isElement=function(h){return !!(h&&h.nodeType==1)};d.isArray=function(h){return Object.prototype.toString.call(h)=="[object Array]"};d.isFunction=function(h){return Object.prototype.toString.call(h)=="[object Function]"};d.isUndefined=function(h){return typeof h=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(h){return h};d.breakLoop=function(){throw f};var b=0;d.uniqueId=function(h){var i=b++;return h?h+i:i};d.functions=function(){var i=[];for(var h in d){if(Object.prototype.hasOwnProperty.call(d,h)){i.push(h)}}return d.without(i,"VERSION","prototype","noConflict").sort()};d.template=function(j,i){var h=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+j.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return i?h(i):h};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(i,h){return h?d(i).chain():i};d.each(d.functions(),function(h){g.prototype[h]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[h].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(h){g.prototype[h]=function(){Array.prototype[h].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(h){g.prototype[h]=function(){return a(Array.prototype[h].apply(this._wrapped,arguments),this._chain)}});g.prototype.chain=function(){this._chain=true;return this};g.prototype.value=function(){return this._wrapped}})();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 99e738419..4a85af41f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -293,7 +293,7 @@
   // item in an array, or -1 if the item is not included in the array.
   _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
-    for (i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
+    for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
 

From c9e46262abd6a2f7ec1f002760a7595c4e2a06e4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 18 Nov 2009 16:09:55 -0500
Subject: [PATCH 057/533] Underscore 0.4.4, with isNumber, isString, and
 isEqual(NaN, NaN)

---
 index.html        | 33 ++++++++++++++++++++++++++++++---
 test/objects.js   | 40 ++++++++++++++++++++++++++--------------
 test/test.html    |  2 +-
 test/utility.js   | 30 +++++++++++++++---------------
 underscore-min.js | 15 ++++++++++++++-
 underscore.js     | 14 +++++++++++++-
 6 files changed, 99 insertions(+), 35 deletions(-)

diff --git a/index.html b/index.html
index 55a74a7db..f0bc7a335 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.3)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.4)</a></td>
           <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.3)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.4)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -202,7 +202,8 @@ _(lyrics).chain()
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
       <a href="#extend">extend</a>, <a href="#clone">clone</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
-      <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isUndefined">isUndefined</a>
+      <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
+      <a href="#isNumber">isNumber</a>, <a href="#isUndefined">isUndefined</a>
       </span>
     </p>
 
@@ -763,6 +764,26 @@ _.isArray([1,2,3]);
       <pre>
 _.isFunction(alert);
 =&gt; true
+</pre>
+
+      <p id="isString">
+        <b class="header">isString</b><code>_.isString(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is a String.
+      </p>
+      <pre>
+_.isFunction("moe");
+=&gt; true
+</pre>
+
+      <p id="isNumber">
+        <b class="header">isNumber</b><code>_.isNumber(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is a Number.
+      </p>
+      <pre>
+_.isNumber(8.4 * 5);
+=&gt; true
 </pre>
 
       <p id="isUndefined">
@@ -891,6 +912,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.4</b><br />
+        Added <tt>isString</tt>, and <tt>isNumber</tt>, for consistency. Fixed
+        <tt>_.isEqual(NaN, NaN)</tt> to return <i>true</i> (which is debatable). 
+      </p>
+      
       <p>
         <b class="header">0.4.3</b><br />
         Started using the native StopIteration object in browsers that support it.
diff --git a/test/objects.js b/test/objects.js
index 489c39f2a..d76d3e8e2 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -1,68 +1,80 @@
 $(document).ready(function() {
-  
+
   module("Object functions (values, extend, isEqual, and so on...)");
-    
+
   test("objects: keys", function() {
     equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
   });
-  
+
   test("objects: values", function() {
     equals(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
   });
-  
+
   test("objects: extend", function() {
     var source = {name : 'moe'}, dest = {age : 50};
     _.extend(dest, source);
     equals(dest.name, 'moe', 'can extend an object with the attributes of another');
   });
-  
+
   test("objects: clone", function() {
     var moe = {name : 'moe', lucky : [13, 27, 34]};
     var clone = _.clone(moe);
     equals(clone.name, 'moe', 'the clone as the attributes of the original');
-    
+
     clone.name = 'curly';
     ok(clone.name == 'curly' && moe.name == 'moe', 'clones can change shallow attributes without affecting the original');
-    
+
     clone.lucky.push(101);
     equals(_.last(moe.lucky), 101, 'changes to deep attributes are shared with the original');
   });
-  
+
   test("objects: isEqual", function() {
     var moe   = {name : 'moe', lucky : [13, 27, 34]};
     var clone = {name : 'moe', lucky : [13, 27, 34]};
     ok(moe != clone, 'basic equality between objects is false');
     ok(_.isEqual(moe, clone), 'deep equality is true');
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
+    ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
+    ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
   });
-  
+
   test("objects: isEmpty", function() {
     ok(!_([1]).isEmpty(), '[1] is not empty');
     ok(_.isEmpty([]), '[] is empty');
     ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
     ok(_.isEmpty({}), '{} is empty');
-    
+
     var obj = {one : 1};
     delete obj.one;
     ok(_.isEmpty(obj), 'deleting all the keys from an object empties it');
   });
-  
+
   test("objects: isElement", function() {
     ok(!_.isElement('div'), 'strings are not dom elements');
     ok(_.isElement($('html')[0]), 'the html tag is a DOM element');
   });
-  
+
   test("objects: isArray", function() {
     ok(!_.isArray(arguments), 'the arguments object is not an array');
     ok(_.isArray([1, 2, 3]), 'but arrays are');
   });
-  
+
+  test("objects: isString", function() {
+    ok(!_.isString(document.body), 'the document body is not a string');
+    ok(_.isString([1, 2, 3].join(', ')), 'but strings are');
+  });
+
+  test("objects: isNumber", function() {
+    ok(!_.isNumber(arguments), 'the arguments object is not a number');
+    ok(_.isNumber(3 * 4 - 7 / 10), 'but numbers are');
+  });
+
   test("objects: isFunction", function() {
     ok(!_.isFunction([1, 2, 3]), 'arrays are not functions');
     ok(!_.isFunction('moe'), 'strings are not functions');
     ok(_.isFunction(_.isFunction), 'but functions are');
   });
-  
+
   test("objects: isUndefined", function() {
     ok(!_.isUndefined(1), 'numbers are defined');
     ok(!_.isUndefined(null), 'null is defined');
diff --git a/test/test.html b/test/test.html
index 30ac9098f..ea26345fb 100644
--- a/test/test.html
+++ b/test/test.html
@@ -13,7 +13,7 @@
   <script type="text/javascript" src="objects.js"></script>
   <script type="text/javascript" src="utility.js"></script>
   <script type="text/javascript" src="chaining.js"></script>
-  <script type="text/javascript" src="speed.js"></script>  
+  <script type="text/javascript" src="speed.js"></script>
 </head>
 <body>
   <h1 id="qunit-header">Underscore Test Suite</h1>
diff --git a/test/utility.js b/test/utility.js
index 4515ba4c4..ed6ee120b 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -1,7 +1,7 @@
 $(document).ready(function() {
-  
+
   module("Utility functions (uniqueId, template)");
-  
+
   test("utility: noConflict", function() {
     var underscore = _.noConflict();
     ok(underscore.isUndefined(_), "The '_' variable has been returned to its previous state.");
@@ -9,12 +9,12 @@ $(document).ready(function() {
     equals(intersection.join(', '), '1, 2', 'but the intersection function still works');
     window._ = underscore;
   });
-  
+
   test("utility: identity", function() {
     var moe = {name : 'moe'};
     equals(_.identity(moe), moe, 'moe is the same as his identity');
   });
-  
+
   test('utility: breakLoop', function() {
     var result = null;
     _([1,2,3,4,5,6]).each(function(num) {
@@ -23,25 +23,25 @@ $(document).ready(function() {
     });
     equals(result, 3, 'broke out of a loop');
   });
-    
+
   test("utility: uniqueId", function() {
     var ids = [], i = 0;
     while(i++ < 100) ids.push(_.uniqueId());
     equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
-  
+
   test("utility: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact", "compose", 
-    "defer", "delay", "detect", "each", "every", "extend", "filter", "first", 
-    "flatten", "foldl", "foldr", "forEach", "functions", "identity", "include", 
-    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual", 
-    "isFunction", "isUndefined", "keys", "last", "lastIndexOf", "map", "max", 
-    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "select", 
-    "size", "some", "sortBy", "sortedIndex", "template", "toArray", "uniq", 
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact", "compose",
+    "defer", "delay", "detect", "each", "every", "extend", "filter", "first",
+    "flatten", "foldl", "foldr", "forEach", "functions", "identity", "include",
+    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
+    "isFunction", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
+    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "select",
+    "size", "some", "sortBy", "sortedIndex", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods()), 'provides a sorted list of functions');
   });
-  
+
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
@@ -50,5 +50,5 @@ $(document).ready(function() {
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<li>Moe</li><li>Larry</li><li>Curly</li>", 'can run arbitrary javascript in templates');
   });
-  
+
 });
diff --git a/underscore-min.js b/underscore-min.js
index dcc64d912..dbaff85cd 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1 +1,14 @@
-(function(){var c=this;var e=c._;var g=function(h){this._wrapped=h};var f=typeof StopIteration!=="undefined"?StopIteration:"__break__";var d=c._=function(h){return new g(h)};if(typeof exports!=="undefined"){exports._=d}d.VERSION="0.4.3";d.each=function(q,o,n){var j=0;try{if(q.forEach){q.forEach(o,n)}else{if(q.length){for(var m=0,h=q.length;m<h;m++){o.call(n,q[m],m,q)}}else{for(var k in q){if(Object.prototype.hasOwnProperty.call(q,k)){o.call(n,q[k],k,q)}}}}}catch(p){if(p!=f){throw p}}return q};d.map=function(k,j,i){if(k&&k.map){return k.map(j,i)}var h=[];d.each(k,function(n,l,m){h.push(j.call(i,n,l,m))});return h};d.reduce=function(k,h,j,i){if(k&&k.reduce){return k.reduce(d.bind(j,i),h)}d.each(k,function(n,l,m){h=j.call(i,h,n,l,m)});return h};d.reduceRight=function(k,h,j,i){if(k&&k.reduceRight){return k.reduceRight(d.bind(j,i),h)}var l=d.clone(d.toArray(k)).reverse();d.each(l,function(n,m){h=j.call(i,h,n,m,k)});return h};d.detect=function(k,j,i){var h;d.each(k,function(n,l,m){if(j.call(i,n,l,m)){h=n;d.breakLoop()}});return h};d.select=function(k,j,i){if(k.filter){return k.filter(j,i)}var h=[];d.each(k,function(n,l,m){j.call(i,n,l,m)&&h.push(n)});return h};d.reject=function(k,j,i){var h=[];d.each(k,function(n,l,m){!j.call(i,n,l,m)&&h.push(n)});return h};d.all=function(k,j,i){j=j||d.identity;if(k.every){return k.every(j,i)}var h=true;d.each(k,function(n,l,m){if(!(h=h&&j.call(i,n,l,m))){d.breakLoop()}});return h};d.any=function(k,j,i){j=j||d.identity;if(k.some){return k.some(j,i)}var h=false;d.each(k,function(n,l,m){if(h=j.call(i,n,l,m)){d.breakLoop()}});return h};d.include=function(j,i){if(d.isArray(j)){return d.indexOf(j,i)!=-1}var h=false;d.each(j,function(k){if(h=k===i){d.breakLoop()}});return h};d.invoke=function(i,j){var h=d.toArray(arguments).slice(2);return d.map(i,function(k){return(j?k[j]:k).apply(k,h)})};d.pluck=function(i,h){return d.map(i,function(j){return j[h]})};d.max=function(k,j,i){if(!j&&d.isArray(k)){return 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d.reduce(h,[],function(i,j){if(d.isArray(j)){return i.concat(d.flatten(j))}i.push(j);return i})};d.without=function(i){var h=i.slice.call(arguments,0);return d.select(i,function(j){return !d.include(h,j)})};d.uniq=function(i,h){return d.reduce(i,[],function(j,l,k){if(0==k||(h?d.last(j)!=l:!d.include(j,l))){j.push(l)}return j})};d.intersect=function(i){var h=d.toArray(arguments).slice(1);return d.select(d.uniq(i),function(j){return d.all(h,function(k){return d.indexOf(k,j)>=0})})};d.zip=function(){var h=d.toArray(arguments);var l=d.max(d.pluck(h,"length"));var k=new Array(l);for(var j=0;j<l;j++){k[j]=d.pluck(h,String(j))}return k};d.indexOf=function(m,k){if(m.indexOf){return m.indexOf(k)}for(var j=0,h=m.length;j<h;j++){if(m[j]===k){return j}}return -1};d.lastIndexOf=function(k,j){if(k.lastIndexOf){return k.lastIndexOf(j)}var h=k.length;while(h--){if(k[h]===j){return h}}return -1};d.bind=function(j,i){i=i||c;var h=d.toArray(arguments).slice(2);return function(){var k=h.concat(d.toArray(arguments));return j.apply(i,k)}};d.bindAll=function(){var h=d.toArray(arguments);var i=h.pop();d.each(h,function(j){i[j]=d.bind(i[j],i)})};d.delay=function(i,j){var h=d.toArray(arguments).slice(2);return setTimeout(function(){return i.apply(i,h)},j)};d.defer=function(h){return d.delay.apply(d,[h,1].concat(d.toArray(arguments).slice(1)))};d.wrap=function(h,i){return function(){var j=[h].concat(d.toArray(arguments));return i.apply(i,j)}};d.compose=function(){var h=d.toArray(arguments);return function(){for(var j=h.length-1;j>=0;j--){arguments=[h[j].apply(this,arguments)]}return arguments[0]}};d.keys=function(h){return d.map(h,function(j,i){return i})};d.values=function(h){return d.map(h,d.identity)};d.extend=function(h,j){for(var i in j){h[i]=j[i]}return h};d.clone=function(h){if(d.isArray(h)){return h.slice(0)}return d.extend({},h)};d.isEqual=function(i,h){if(i===h){return true}var l=typeof(i),n=typeof(h);if(l!=n){return false}if(i==h){return true}if(i.isEqual){return i.isEqual(h)}if(l!=="object"){return false}var j=d.keys(i),m=d.keys(h);if(j.length!=m.length){return false}for(var k in i){if(!d.isEqual(i[k],h[k])){return false}}return true};d.isEmpty=function(h){return(d.isArray(h)?h:d.values(h)).length==0};d.isElement=function(h){return !!(h&&h.nodeType==1)};d.isArray=function(h){return Object.prototype.toString.call(h)=="[object Array]"};d.isFunction=function(h){return Object.prototype.toString.call(h)=="[object Function]"};d.isUndefined=function(h){return typeof h=="undefined"};d.noConflict=function(){c._=e;return this};d.identity=function(h){return h};d.breakLoop=function(){throw f};var b=0;d.uniqueId=function(h){var i=b++;return h?h+i:i};d.functions=function(){var i=[];for(var h in d){if(Object.prototype.hasOwnProperty.call(d,h)){i.push(h)}}return d.without(i,"VERSION","prototype","noConflict").sort()};d.template=function(j,i){var h=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+j.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return i?h(i):h};d.forEach=d.each;d.foldl=d.inject=d.reduce;d.foldr=d.reduceRight;d.filter=d.select;d.every=d.all;d.some=d.any;d.methods=d.functions;var a=function(i,h){return h?d(i).chain():i};d.each(d.functions(),function(h){g.prototype[h]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return a(d[h].apply(d,arguments),this._chain)}});d.each(["pop","push","reverse","shift","sort","splice","unshift"],function(h){g.prototype[h]=function(){Array.prototype[h].apply(this._wrapped,arguments);return a(this._wrapped,this._chain)}});d.each(["concat","join","slice"],function(h){g.prototype[h]=function(){return a(Array.prototype[h].apply(this._wrapped,arguments),this._chain)}});g.prototype.chain=function(){this._chain=true;return this};g.prototype.value=function(){return this._wrapped}})();
\ No newline at end of file
+(function(){var j=this,m=j._;function i(a){this._wrapped=a}var l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.4";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
+d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
+c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});
+return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.toArray(arguments).slice(2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
+return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
+(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a){return a[0]};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=a.slice.call(arguments,0);return b.select(a,
+function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.toArray(arguments).slice(1);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);
+for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.bind=function(a,c){c=c||j;var d=b.toArray(arguments).slice(2);return function(){var e=d.concat(b.toArray(arguments));return a.apply(c,e)}};b.bindAll=function(){var a=b.toArray(arguments),c=a.pop();b.each(a,function(d){c[d]=b.bind(c[d],c)})};b.delay=function(a,c){var d=b.toArray(arguments).slice(2);return setTimeout(function(){return a.apply(a,
+d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.toArray(arguments).slice(1)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,function(c,d){return d})};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=
+c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==
+0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)=="[object Number]"};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=m;return this};b.identity=
+function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,
+"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.methods=b.functions;function k(a,c){return c?b(a).chain():a}b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift",
+"sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 4a85af41f..ac1b8659d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,7 +31,7 @@
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Current version.
-  _.VERSION = '0.4.3';
+  _.VERSION = '0.4.4';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -399,6 +399,8 @@
     if (a == b) return true;
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
+    // Both are NaN?
+    if (_.isNumber(a) && _.isNumber(b) && isNaN(a) && isNaN(b)) return true;
     // If a is not an object by this point, we can't handle it.
     if (atype !== 'object') return false;
     // Nothing else worked, deep compare the contents.
@@ -430,6 +432,16 @@
     return Object.prototype.toString.call(obj) == '[object Function]';
   };
 
+  // Is a given value a String?
+  _.isString = function(obj) {
+    return Object.prototype.toString.call(obj) == '[object String]';
+  };
+
+  // Is a given value a Number?
+  _.isNumber = function(obj) {
+    return Object.prototype.toString.call(obj) == '[object Number]';
+  };
+
   // Is a given variable undefined?
   _.isUndefined = function(obj) {
     return typeof obj == 'undefined';

From 86e6dd58c2817b40a1249e452cc915f3375e79a5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 18 Nov 2009 16:11:35 -0500
Subject: [PATCH 058/533] code-ify stopIteration in the docs

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index f0bc7a335..ff1a6dc9e 100644
--- a/index.html
+++ b/index.html
@@ -920,7 +920,7 @@ _([1, 2, 3]).value();
       
       <p>
         <b class="header">0.4.3</b><br />
-        Started using the native StopIteration object in browsers that support it.
+        Started using the native <tt>StopIteration</tt> object in browsers that support it.
         Fixed Underscore setup for CommonJS environments.
       </p>
       

From 8cac2d5bd75c606fa987a97a97213e48974ed7f0 Mon Sep 17 00:00:00 2001
From: Luke Sutton <luke.sutton@gmail.com>
Date: Thu, 19 Nov 2009 11:07:14 +1030
Subject: [PATCH 059/533] Add init(), tail() and reverse() Array functions.
 Alias first() to head();

---
 test/arrays.js | 15 +++++++++++++++
 underscore.js  | 24 ++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/test/arrays.js b/test/arrays.js
index d069d9d62..a9dcb4e90 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -58,4 +58,19 @@ $(document).ready(function() {
     equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
   });
   
+  test("arrays: tail", function() {
+    var numbers = [1, 2, 3, 4];
+    equals(_.tail(numbers).join(", "), "2, 3, 4");
+  });
+  
+  test("arrays: init", function() {
+    var numbers = [1, 2, 3, 4];
+    equals(_.init(numbers).join(", "), "1, 2, 3");
+  });
+  
+  test("arrays: reverse", function() {
+    var numbers = [1, 2, 4, 6];
+    equals(_.reverse(numbers).join(", "), "6, 4, 2, 1");
+  });
+  
 });
diff --git a/underscore.js b/underscore.js
index ac1b8659d..ad6dbecac 100644
--- a/underscore.js
+++ b/underscore.js
@@ -305,6 +305,29 @@
     while (i--) if (array[i] === item) return i;
     return -1;
   };
+  
+  // Returns everything but the first entry of the array. Conceptually the 
+  // same as calling shift(), but doesn't mutate the array passed in.
+  _.tail = function(array) {
+    var tail = _.clone(array);
+    tail.shift();
+    return tail;
+  };
+  
+  // Returns everything but the last entry of the array. Conceptually the 
+  // same as calling pop(), but doesn't mutate the array passed in.
+  _.init = function(array) {
+    var init = _.clone(array);
+    init.pop();
+    return init;
+  };
+
+  // Returns a new array, with the entries or the passed-in array in reverse
+  // order.
+  _.reverse = function(array) {
+    var reverse = _.clone(array);
+    return reverse.reverse();
+  };
 
   /* ----------------------- Function Functions: -----------------------------*/
 
@@ -501,6 +524,7 @@
 
   /*------------------------------- Aliases ----------------------------------*/
 
+  _.head     = _.first;
   _.forEach  = _.each;
   _.foldl    = _.inject       = _.reduce;
   _.foldr    = _.reduceRight;

From 4ed79d5f778e8e8eb5fa0232545ac719cf4c9d42 Mon Sep 17 00:00:00 2001
From: Luke Sutton <luke.sutton@gmail.com>
Date: Thu, 19 Nov 2009 11:35:21 +1030
Subject: [PATCH 060/533] Correct the test for functions() to account for the
 new functions and aliases.

---
 test/utility.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index ed6ee120b..0acc6a16d 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -31,13 +31,13 @@ $(document).ready(function() {
   });
 
   test("utility: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact", "compose",
-    "defer", "delay", "detect", "each", "every", "extend", "filter", "first",
-    "flatten", "foldl", "foldr", "forEach", "functions", "identity", "include",
-    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact", 
+    "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
+    "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
+    "indexOf", "init", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "select",
-    "size", "some", "sortBy", "sortedIndex", "template", "toArray", "uniq",
+    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "reverse", "select",
+    "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods()), 'provides a sorted list of functions');
   });

From f8e939d30ac53ba672e0f94a20f680d2b6badcfa Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 18 Nov 2009 21:54:50 -0500
Subject: [PATCH 061/533] fixing template test validation for IE

---
 test/utility.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index ed6ee120b..16cb01013 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -46,9 +46,9 @@ $(document).ready(function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
     equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
-    var fancyTemplate = _.template("<% for (key in people) { %><li><%= people[key] %></li><% } %>");
+    var fancyTemplate = _.template("<ul><% for (key in people) { %><li><%= people[key] %></li><% } %></ul>");
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
-    equals(result, "<li>Moe</li><li>Larry</li><li>Curly</li>", 'can run arbitrary javascript in templates');
+    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
   });
 
 });

From ae968a6ea06dd4fd6f5184b3e6d14f9a077b3d01 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 19 Nov 2009 09:37:56 -0500
Subject: [PATCH 062/533] Underscore 0.4.5, with first/rest, head/tail, and all
 Array functions guaranteed to work on 'arguments' objects. Many method
 implementations reworked to use _.rest()

---
 index.html        | 43 +++++++++++++++++++++++------
 test/arrays.js    | 69 ++++++++++++++++++++++++++++-------------------
 test/utility.js   |  6 ++---
 underscore-min.js | 22 +++++++--------
 underscore.js     | 63 ++++++++++++++++---------------------------
 5 files changed, 113 insertions(+), 90 deletions(-)

diff --git a/index.html b/index.html
index ff1a6dc9e..c2b1ac241 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.4)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.5)</a></td>
           <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.4)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.5)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -183,7 +183,7 @@ _(lyrics).chain()
     <p>
       <b>Arrays</b>
       <br />
-      <span class="methods"><a href="#first">first</a>, <a href="#last">last</a>,
+      <span class="methods"><a href="#first">first</a>, <a href="#rest">rest</a>, <a href="#last">last</a>,
       <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>,
       <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>,
       <a href="#lastIndexOf">lastIndexOf</a></span>
@@ -454,15 +454,33 @@ _.size({one : 1, two : 2, three : 3});
 </pre>
 
       <h2>Array Functions</h2>
+      
+      <p>
+        <i>Note: All array functions will also work on the <b>arguments</b> object.</i>
+      </p>
 
       <p id="first">
-        <b class="header">first</b><code>_.first(array)</code>
+        <b class="header">first</b><code>_.first(array, [n])</code>
+        <span class="alias">Alias: <b>head</b></span>
         <br />
-        Convenience to return the first element of an <b>array</b> (identical to <tt>array[0]</tt>).
+        Returns the first element of an <b>array</b>. Passing <b>n</b> will 
+        return the first <b>n</b> elements of the array.
       </p>
       <pre>
-_.first([3, 2, 1]);
-=&gt; 3
+_.first([5, 4, 3, 2, 1]);
+=&gt; 5
+</pre>
+
+      <p id="rest">
+        <b class="header">rest</b><code>_.rest(array, [index])</code>
+        <span class="alias">Alias: <b>tail</b></span>
+        <br />
+        Returns the <b>rest</b> of the elements in an array. Pass an <b>index</b>
+        to return the values of the array from that index onward.
+      </p>
+      <pre>
+_.rest([5, 4, 3, 2, 1]);
+=&gt; [4, 3, 2, 1]
 </pre>
 
       <p id="last">
@@ -471,7 +489,7 @@ _.first([3, 2, 1]);
         Returns the last element of an <b>array</b>.
       </p>
       <pre>
-_.last([3, 2, 1]);
+_.last([5, 4, 3, 2, 1]);
 =&gt; 1
 </pre>
 
@@ -912,6 +930,15 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.5</b><br />
+        Added <tt>rest</tt> for Arrays and arguments objects, and aliased 
+        <tt>first</tt> as <tt>head</tt>, and <tt>rest</tt> as <tt>tail</tt>,
+        thanks to <a href="http://github.com/lukesutton/">Luke Sutton</a>'s patches.
+        Added tests ensuring that all Underscore Array functions also work on
+        <i>arguments</i> objects.
+      </p>
+      
       <p>
         <b class="header">0.4.4</b><br />
         Added <tt>isString</tt>, and <tt>isNumber</tt>, for consistency. Fixed
diff --git a/test/arrays.js b/test/arrays.js
index a9dcb4e90..5464756f6 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -1,76 +1,89 @@
 $(document).ready(function() {
-  
+
   module("Array-only functions (last, compact, uniq, and so on...)");
-    
+
   test("arrays: first", function() {
     equals(_.first([1,2,3]), 1, 'can pull out the first element of an array');
     equals(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"');
+    equals(_.first([1,2,3], 2).join(', '), '1, 2', 'can pass an index to first');
+    var result = (function(){ return _.first(arguments); })(4, 3, 2, 1);
+    equals(result, 4, 'works on an arguments object.');
   });
-  
+
+  test("arrays: rest", function() {
+    var numbers = [1, 2, 3, 4];
+    equals(_.rest(numbers).join(", "), "2, 3, 4", 'working rest()');
+    equals(_.rest(numbers, 2).join(', '), '3, 4', 'rest can take an index');
+    var result = (function(){ return _(arguments).tail(); })(1, 2, 3, 4);
+    equals(result.join(', '), '2, 3, 4', 'aliased as tail and works on arguments object');
+  });
+
   test("arrays: last", function() {
     equals(_.last([1,2,3]), 3, 'can pull out the last element of an array');
+    var result = (function(){ return _(arguments).last(); })(1, 2, 3, 4);
+    equals(result, 4, 'works on an arguments object');
   });
-  
+
   test("arrays: compact", function() {
     equals(_.compact([0, 1, false, 2, false, 3]).length, 3, 'can trim out all falsy values');
+    var result = (function(){ return _(arguments).compact().length; })(0, 1, false, 2, false, 3);
+    equals(result, 3, 'works on an arguments object');
   });
-  
+
   test("arrays: flatten", function() {
     var list = [1, [2], [3, [[[4]]]]];
     equals(_.flatten(list).join(', '), '1, 2, 3, 4', 'can flatten nested arrays');
+    var result = (function(){ return _.flatten(arguments); })(1, [2], [3, [[[4]]]]);
+    equals(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
   });
-  
+
   test("arrays: without", function() {
     var list = [1, 2, 1, 0, 3, 1, 4];
     equals(_.without(list, 0, 1).join(', '), '2, 3, 4', 'can remove all instances of an object');
+    var result = (function(){ return _.without(arguments, 0, 1); })(1, 2, 1, 0, 3, 1, 4);
+    equals(result.join(', '), '2, 3, 4', 'works on an arguments object');
   });
-  
+
   test("arrays: uniq", function() {
     var list = [1, 2, 1, 3, 1, 4];
     equals(_.uniq(list).join(', '), '1, 2, 3, 4', 'can find the unique values of an unsorted array');
-    
+
     var list = [1, 1, 1, 2, 2, 3];
     equals(_.uniq(list, true).join(', '), '1, 2, 3', 'can find the unique values of a sorted array faster');
+
+    var result = (function(){ return _.uniq(arguments); })(1, 2, 1, 3, 1, 4);
+    equals(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
   });
-  
+
   test("arrays: intersect", function() {
     var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho'];
     equals(_.intersect(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
     equals(_(stooges).intersect(leaders).join(''), 'moe', 'can perform an OO-style intersection');
+    var result = (function(){ return _.intersect(arguments, leaders); })('moe', 'curly', 'larry');
+    equals(result.join(''), 'moe', 'works an an arguments object');
   });
-  
+
   test('arrays: zip', function() {
     var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true];
     var stooges = _.zip(names, ages, leaders);
     equals(String(stooges), 'moe,30,true,larry,40,,curly,50,', 'zipped together arrays of different lengths');
   });
-  
+
   test("arrays: indexOf", function() {
     var numbers = [1, 2, 3];
     numbers.indexOf = null;
     equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
+    var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
+    equals(result, 1, 'works on an arguments object');
   });
-  
+
   test("arrays: lastIndexOf", function() {
     var numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0];
     numbers.lastIndexOf = null;
     equals(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function');
     equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
+    var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
+    equals(result, 5, 'works on an arguments object');
   });
-  
-  test("arrays: tail", function() {
-    var numbers = [1, 2, 3, 4];
-    equals(_.tail(numbers).join(", "), "2, 3, 4");
-  });
-  
-  test("arrays: init", function() {
-    var numbers = [1, 2, 3, 4];
-    equals(_.init(numbers).join(", "), "1, 2, 3");
-  });
-  
-  test("arrays: reverse", function() {
-    var numbers = [1, 2, 4, 6];
-    equals(_.reverse(numbers).join(", "), "6, 4, 2, 1");
-  });
-  
+
 });
diff --git a/test/utility.js b/test/utility.js
index 897d0ceec..6fd19af93 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -31,12 +31,12 @@ $(document).ready(function() {
   });
 
   test("utility: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact", 
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
-    "indexOf", "init", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
+    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "reverse", "select",
+    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods()), 'provides a sorted list of functions');
diff --git a/underscore-min.js b/underscore-min.js
index dbaff85cd..f8466a228 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,14 +1,14 @@
-(function(){var j=this,m=j._;function i(a){this._wrapped=a}var l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.4";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
+(function(){var j=this,m=j._;function i(a){this._wrapped=a}var l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.5";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
 d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
 c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});
-return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.toArray(arguments).slice(2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
+return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
 return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
-(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a){return a[0]};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=a.slice.call(arguments,0);return b.select(a,
-function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.toArray(arguments).slice(1);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);
-for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.bind=function(a,c){c=c||j;var d=b.toArray(arguments).slice(2);return function(){var e=d.concat(b.toArray(arguments));return a.apply(c,e)}};b.bindAll=function(){var a=b.toArray(arguments),c=a.pop();b.each(a,function(d){c[d]=b.bind(c[d],c)})};b.delay=function(a,c){var d=b.toArray(arguments).slice(2);return setTimeout(function(){return a.apply(a,
-d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.toArray(arguments).slice(1)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,function(c,d){return d})};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=
-c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==
-0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)=="[object Number]"};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=m;return this};b.identity=
-function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,
-"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.methods=b.functions;function k(a,c){return c?b(a).chain():a}b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift",
-"sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));
+c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,
+String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(){var a=Array.prototype.pop.call(arguments);b.each(arguments,function(c){a[c]=b.bind(a[c],a)})};b.delay=
+function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,function(c,d){return d})};b.values=function(a){return b.map(a,
+b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};
+b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)=="[object Number]"};b.isUndefined=function(a){return typeof a==
+"undefined"};b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,
+"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;function k(a,c){return c?b(a).chain():a}b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),
+this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index ad6dbecac..69851fb02 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,7 +31,7 @@
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Current version.
-  _.VERSION = '0.4.4';
+  _.VERSION = '0.4.5';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -156,7 +156,7 @@
 
   // Invoke a method with arguments on every item in a collection.
   _.invoke = function(obj, method) {
-    var args = _.toArray(arguments).slice(2);
+    var args = _.rest(arguments, 2);
     return _.map(obj, function(value) {
       return (method ? value[method] : value).apply(value, args);
     });
@@ -228,9 +228,17 @@
 
   /*-------------------------- Array Functions: ------------------------------*/
 
-  // Get the first element of an array.
-  _.first = function(array) {
-    return array[0];
+  // Get the first element of an array. Passing "n" will return the first N
+  // values in the array. Aliased as "head".
+  _.first = function(array, n) {
+    return n ? Array.prototype.slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the first entry of the array. Aliased as "tail".
+  // Especially useful on the arguments object. Passing an "index" will return
+  // the rest of the values in the array from that index onward.
+  _.rest = function(array, index) {
+    return Array.prototype.slice.call(array, _.isUndefined(index) ? 1 : index);
   };
 
   // Get the last element of an array.
@@ -254,7 +262,7 @@
 
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
-    var values = array.slice.call(arguments, 0);
+    var values = _.rest(arguments);
     return _.select(array, function(value){ return !_.include(values, value); });
   };
 
@@ -270,7 +278,7 @@
   // Produce an array that contains every item shared between all the
   // passed-in arrays.
   _.intersect = function(array) {
-    var rest = _.toArray(arguments).slice(1);
+    var rest = _.rest(arguments);
     return _.select(_.uniq(array), function(item) {
       return _.all(rest, function(other) {
         return _.indexOf(other, item) >= 0;
@@ -305,49 +313,23 @@
     while (i--) if (array[i] === item) return i;
     return -1;
   };
-  
-  // Returns everything but the first entry of the array. Conceptually the 
-  // same as calling shift(), but doesn't mutate the array passed in.
-  _.tail = function(array) {
-    var tail = _.clone(array);
-    tail.shift();
-    return tail;
-  };
-  
-  // Returns everything but the last entry of the array. Conceptually the 
-  // same as calling pop(), but doesn't mutate the array passed in.
-  _.init = function(array) {
-    var init = _.clone(array);
-    init.pop();
-    return init;
-  };
-
-  // Returns a new array, with the entries or the passed-in array in reverse
-  // order.
-  _.reverse = function(array) {
-    var reverse = _.clone(array);
-    return reverse.reverse();
-  };
 
   /* ----------------------- Function Functions: -----------------------------*/
 
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
   _.bind = function(func, context) {
-    context = context || root;
-    var args = _.toArray(arguments).slice(2);
+    var args = _.rest(arguments, 2);
     return function() {
-      var a = args.concat(_.toArray(arguments));
-      return func.apply(context, a);
+      return func.apply(context || root, args.concat(_.toArray(arguments)));
     };
   };
 
   // Bind all of an object's methods to that object. Useful for ensuring that
   // all callbacks defined on an object belong to it.
   _.bindAll = function() {
-    var args = _.toArray(arguments);
-    var context = args.pop();
-    _.each(args, function(methodName) {
+    var context = Array.prototype.pop.call(arguments);
+    _.each(arguments, function(methodName) {
       context[methodName] = _.bind(context[methodName], context);
     });
   };
@@ -355,14 +337,14 @@
   // Delays a function for the given number of milliseconds, and then calls
   // it with the arguments supplied.
   _.delay = function(func, wait) {
-    var args = _.toArray(arguments).slice(2);
+    var args = _.rest(arguments, 2);
     return setTimeout(function(){ return func.apply(func, args); }, wait);
   };
 
   // Defers a function, scheduling it to run after the current call stack has
   // cleared.
   _.defer = function(func) {
-    return _.delay.apply(_, [func, 1].concat(_.toArray(arguments).slice(1)));
+    return _.delay.apply(_, [func, 1].concat(_.rest(arguments)));
   };
 
   // Returns the first function passed as an argument to the second,
@@ -524,13 +506,14 @@
 
   /*------------------------------- Aliases ----------------------------------*/
 
-  _.head     = _.first;
   _.forEach  = _.each;
   _.foldl    = _.inject       = _.reduce;
   _.foldr    = _.reduceRight;
   _.filter   = _.select;
   _.every    = _.all;
   _.some     = _.any;
+  _.head     = _.first;
+  _.tail     = _.rest;
   _.methods  = _.functions;
 
   /*------------------------ Setup the OOP Wrapper: --------------------------*/

From 3c0b7125a70222448e2d83a7c503d3f4fd2fdd45 Mon Sep 17 00:00:00 2001
From: matehat <mathieu@matehat.com>
Date: Sat, 21 Nov 2009 22:02:31 -0500
Subject: [PATCH 063/533] '_.toArray' now checks whether the iterable object
 contains a 'toArray' method to delegate to.

---
 underscore.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/underscore.js b/underscore.js
index 69851fb02..13e6feb77 100644
--- a/underscore.js
+++ b/underscore.js
@@ -217,6 +217,7 @@
   // Convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
     if (!iterable) return [];
+    if (iterable.toArray) return iterable.toArray();
     if (_.isArray(iterable)) return iterable;
     return _.map(iterable, function(val){ return val; });
   };

From 67f1e8a9c89f644ee54be215146742a1b3174b31 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 22 Nov 2009 00:50:08 -0500
Subject: [PATCH 064/533] merged matehat's toArray patch

---
 underscore-min.js | 20 ++++++++++----------
 underscore.js     |  4 ++--
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index f8466a228..da7d4a39c 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,14 +1,14 @@
-(function(){var j=this,m=j._;function i(a){this._wrapped=a}var l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.5";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
+(function(){var j=this,m=j._,i=function(a){this._wrapped=a},l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.5";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
 d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
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 return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
 return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
-(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));
-c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,
-String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(){var a=Array.prototype.pop.call(arguments);b.each(arguments,function(c){a[c]=b.bind(a[c],a)})};b.delay=
-function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,function(c,d){return d})};b.values=function(a){return b.map(a,
-b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};
-b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)=="[object Number]"};b.isUndefined=function(a){return typeof a==
-"undefined"};b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,
-"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;function k(a,c){return c?b(a).chain():a}b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),
-this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,
+[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=
+b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(){var a=Array.prototype.pop.call(arguments);
+b.each(arguments,function(c){a[c]=b.bind(a[c],a)})};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,
+function(c,d){return d})};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;
+for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)==
+"[object Number]"};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+
+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a,c){return c?b(a).chain():a};b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,
+this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 13e6feb77..1d16e9911 100644
--- a/underscore.js
+++ b/underscore.js
@@ -216,8 +216,8 @@
 
   // Convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
-    if (!iterable) return [];
-    if (iterable.toArray) return iterable.toArray();
+    if (!iterable)           return [];
+    if (iterable.toArray)    return iterable.toArray();
     if (_.isArray(iterable)) return iterable;
     return _.map(iterable, function(val){ return val; });
   };

From d8cf99ba89e9d4dd6fc5cc1865737464cdede272 Mon Sep 17 00:00:00 2001
From: Kirill Ishanov <kirill.ishanov@gmail.com>
Date: Tue, 1 Dec 2009 00:44:13 +0300
Subject: [PATCH 065/533] initial implementation of _.range

---
 test/collections.js |  4 ++++
 underscore.js       | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/test/collections.js b/test/collections.js
index c0bfe1ee8..0f3381b9d 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -2,6 +2,10 @@ $(document).ready(function() {
 
   module("Collection functions (each, any, select, and so on...)");
 
+  test("generators: range", function() {
+    equals(_.range(4).join(' '), '0 1 2 3 4', 'range with positive number generates an array of of elements 0,1,2,...,n');
+  });
+
   test("collections: each", function() {
     _.each([1, 2, 3], function(num, i) {
       equals(num, i + 1, 'each iterators provide value and iteration count');
diff --git a/underscore.js b/underscore.js
index 1d16e9911..9d71638b5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -33,6 +33,20 @@
   // Current version.
   _.VERSION = '0.4.5';
 
+  /*------------------------ Generator Functions: ----------------------------*/
+  _.range = function(upper, lower, step) {
+    if (!lower) var lower = 0;
+    if (!step) var step = 1;
+
+    var result = new Array(((upper - lower) / step) + 1));
+
+    for (var i = lower; i <= upper; i += step) {
+        result[i] = i;
+    }
+
+    return result;
+  }
+
   /*------------------------ Collection Functions: ---------------------------*/
 
   // The cornerstone, an each implementation.

From 451d9c5d62e5d24ff77c6bfc14fe337f591efe3c Mon Sep 17 00:00:00 2001
From: Kirill Ishanov <kirill.ishanov@gmail.com>
Date: Tue, 1 Dec 2009 02:10:56 +0300
Subject: [PATCH 066/533] implemented 6 more passing tests for range. Now works
 like python's range

---
 test/collections.js |  4 ----
 test/generators.js  | 15 +++++++++++++++
 test/test.html      |  3 ++-
 test/utility.js     |  2 +-
 underscore.js       | 34 ++++++++++++++++++++++++----------
 5 files changed, 42 insertions(+), 16 deletions(-)
 create mode 100644 test/generators.js

diff --git a/test/collections.js b/test/collections.js
index 0f3381b9d..c0bfe1ee8 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -2,10 +2,6 @@ $(document).ready(function() {
 
   module("Collection functions (each, any, select, and so on...)");
 
-  test("generators: range", function() {
-    equals(_.range(4).join(' '), '0 1 2 3 4', 'range with positive number generates an array of of elements 0,1,2,...,n');
-  });
-
   test("collections: each", function() {
     _.each([1, 2, 3], function(num, i) {
       equals(num, i + 1, 'each iterators provide value and iteration count');
diff --git a/test/generators.js b/test/generators.js
new file mode 100644
index 000000000..ea7982de1
--- /dev/null
+++ b/test/generators.js
@@ -0,0 +1,15 @@
+$(document).ready(function() {
+
+  module("Generator functions (range...)");
+
+  test("generators: range", function() {
+    equals(_.range(0).join(''), '', 'range with 0 as a first argument generates an empty array');
+    equals(_.range(4).join(' '), '0 1 2 3', 'range with a single positive argument generates an array of elements 0,1,2,...,n-1');
+    equals(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a & b, a<b generates an array of elements a,a+1,a+2,...,b-2,b-1');
+    equals(_.range(8, 5).join(''), '', 'range with two arguments a & b, b<a generates an empty array');
+    equals(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a & b & c, c < b-a, a < b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) < c');
+    equals(_.range(3, 10, 15).join(''), '3', 'range with three arguments a & b & c, c > b-a, a < b generates an array with a single element, equal to a');
+    equals(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a & b & c, a > b, c < 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
+  });
+});
+
diff --git a/test/test.html b/test/test.html
index ea26345fb..86b73318e 100644
--- a/test/test.html
+++ b/test/test.html
@@ -7,6 +7,7 @@
   <script type="text/javascript" src="vendor/qunit.js"></script>
   <script type="text/javascript" src="vendor/jslitmus.js"></script>
   <script type="text/javascript" src="../underscore.js"></script>
+  <script type="text/javascript" src="generators.js"></script>
   <script type="text/javascript" src="collections.js"></script>
   <script type="text/javascript" src="arrays.js"></script>
   <script type="text/javascript" src="functions.js"></script>
@@ -31,4 +32,4 @@
   </h2>
   <br />
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/test/utility.js b/test/utility.js
index 6fd19af93..9f6c855e9 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -36,7 +36,7 @@ $(document).ready(function() {
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "methods", "min", "pluck", "reduce", "reduceRight", "reject", "rest", "select",
+    "methods", "min", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods()), 'provides a sorted list of functions');
diff --git a/underscore.js b/underscore.js
index 9d71638b5..dacba7c01 100644
--- a/underscore.js
+++ b/underscore.js
@@ -33,19 +33,33 @@
   // Current version.
   _.VERSION = '0.4.5';
 
-  /*------------------------ Generator Functions: ----------------------------*/
-  _.range = function(upper, lower, step) {
-    if (!lower) var lower = 0;
-    if (!step) var step = 1;
+  /*------------------------ Generator Functions: ---------------------------*/
 
-    var result = new Array(((upper - lower) / step) + 1));
-
-    for (var i = lower; i <= upper; i += step) {
-        result[i] = i;
+  // Generates an Array, containing an arithmetic progressions
+  // Analog of python's built-in function 'range'
+  _.range = function(start, stop, step) {
+    if (!stop) {
+      var stop = start;
+      start = 0;
     }
 
-    return result;
-  }
+    if (!step) var step = 1;
+
+    var length = Math.ceil((stop - start) / step);
+
+    if (length < 0) {
+      return [];
+    }
+
+    var results = new Array(length);
+    var resIdx = 0;
+
+    for (var i = start; (start <= stop ? stop - i > 0 : i - stop > 0); i += step) {
+      results[resIdx++] = i;
+    }
+
+    return results;
+  };
 
   /*------------------------ Collection Functions: ---------------------------*/
 

From 64cac959a59acd1ab7bbf5199d55a6befc241898 Mon Sep 17 00:00:00 2001
From: Kirill Ishanov <kirill.ishanov@gmail.com>
Date: Tue, 1 Dec 2009 02:26:04 +0300
Subject: [PATCH 067/533] re-generated underscore-min.js to include _.range()
 function

---
 underscore-min.js | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index da7d4a39c..2fcd2eb12 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,14 +1,2 @@
-(function(){var j=this,m=j._,i=function(a){this._wrapped=a},l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.5";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
-d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
-c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});
-return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
-return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
-(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,
-[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=
-b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(){var a=Array.prototype.pop.call(arguments);
-b.each(arguments,function(c){a[c]=b.bind(a[c],a)})};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,
-function(c,d){return d})};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;
-for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)=="[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)==
-"[object Number]"};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+
-a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a,c){return c?b(a).chain():a};b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,
-this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+(function(){var j=this;var k=j._;var m=function(a){this._wrapped=a};var o=typeof StopIteration!=='undefined'?StopIteration:'__break__';var _=j._=function(a){return new m(a)};if(typeof exports!=='undefined')exports._=_;_.VERSION='0.4.5';_.range=function(a,b,c){if(!b){var b=a;a=0}if(!c)var c=1;var d=Math.ceil((b-a)/c);if(d<0){return[]}var e=new Array(d);var f=0;for(var i=a;(a<=b?b-i>0:i-b>0);i+=c){e[f++]=i}return e};_.each=function(a,b,c){var d=0;try{if(a.forEach){a.forEach(b,c)}else if(a.length){for(var i=0,l=a.length;i<l;i++)b.call(c,a[i],i,a)}else{for(var f in a)if(Object.prototype.hasOwnProperty.call(a,f)){b.call(c,a[f],f,a)}}}catch(e){if(e!=o)throw e;}return a};_.map=function(d,e,f){if(d&&d.map)return d.map(e,f);var g=[];_.each(d,function(a,b,c){g.push(e.call(f,a,b,c))});return g};_.reduce=function(d,e,f,g){if(d&&d.reduce)return d.reduce(_.bind(f,g),e);_.each(d,function(a,b,c){e=f.call(g,e,a,b,c)});return e};_.reduceRight=function(c,d,e,f){if(c&&c.reduceRight)return c.reduceRight(_.bind(e,f),d);var g=_.clone(_.toArray(c)).reverse();_.each(g,function(a,b){d=e.call(f,d,a,b,c)});return d};_.detect=function(d,e,f){var g;_.each(d,function(a,b,c){if(e.call(f,a,b,c)){g=a;_.breakLoop()}});return g};_.select=function(d,e,f){if(d.filter)return d.filter(e,f);var g=[];_.each(d,function(a,b,c){e.call(f,a,b,c)&&g.push(a)});return g};_.reject=function(d,e,f){var g=[];_.each(d,function(a,b,c){!e.call(f,a,b,c)&&g.push(a)});return g};_.all=function(d,e,f){e=e||_.identity;if(d.every)return d.every(e,f);var g=true;_.each(d,function(a,b,c){if(!(g=g&&e.call(f,a,b,c)))_.breakLoop()});return g};_.any=function(d,e,f){e=e||_.identity;if(d.some)return d.some(e,f);var g=false;_.each(d,function(a,b,c){if(g=e.call(f,a,b,c))_.breakLoop()});return g};_.include=function(b,c){if(_.isArray(b))return _.indexOf(b,c)!=-1;var d=false;_.each(b,function(a){if(d=a===c)_.breakLoop()});return d};_.invoke=function(b,c){var d=_.rest(arguments,2);return _.map(b,function(a){return(c?a[c]:a).apply(a,d)})};_.pluck=function(b,c){return _.map(b,function(a){return a[c]})};_.max=function(e,f,g){if(!f&&_.isArray(e))return Math.max.apply(Math,e);var h={computed:-Infinity};_.each(e,function(a,b,c){var d=f?f.call(g,a,b,c):a;d>=h.computed&&(h={value:a,computed:d})});return h.value};_.min=function(e,f,g){if(!f&&_.isArray(e))return Math.min.apply(Math,e);var h={computed:Infinity};_.each(e,function(a,b,c){var d=f?f.call(g,a,b,c):a;d<h.computed&&(h={value:a,computed:d})});return h.value};_.sortBy=function(e,f,g){return _.pluck(_.map(e,function(a,b,c){return{value:a,criteria:f.call(g,a,b,c)}}).sort(function(c,d){var a=c.criteria,b=d.criteria;return a<b?-1:a>b?1:0}),'value')};_.sortedIndex=function(a,b,c){c=c||_.identity;var d=0,high=a.length;while(d<high){var e=(d+high)>>1;c(a[e])<c(b)?d=e+1:high=e}return d};_.toArray=function(b){if(!b)return[];if(b.toArray)return b.toArray();if(_.isArray(b))return b;return _.map(b,function(a){return a})};_.size=function(a){return _.toArray(a).length};_.first=function(a,n){return n?Array.prototype.slice.call(a,0,n):a[0]};_.rest=function(a,b){return Array.prototype.slice.call(a,_.isUndefined(b)?1:b)};_.last=function(a){return a[a.length-1]};_.compact=function(b){return _.select(b,function(a){return!!a})};_.flatten=function(c){return _.reduce(c,[],function(a,b){if(_.isArray(b))return a.concat(_.flatten(b));a.push(b);return a})};_.without=function(b){var c=_.rest(arguments);return _.select(b,function(a){return!_.include(c,a)})};_.uniq=function(c,d){return _.reduce(c,[],function(a,b,i){if(0==i||(d?_.last(a)!=b:!_.include(a,b)))a.push(b);return a})};_.intersect=function(c){var d=_.rest(arguments);return _.select(_.uniq(c),function(b){return _.all(d,function(a){return _.indexOf(a,b)>=0})})};_.zip=function(){var a=_.toArray(arguments);var b=_.max(_.pluck(a,'length'));var c=new Array(b);for(var i=0;i<b;i++)c[i]=_.pluck(a,String(i));return c};_.indexOf=function(a,b){if(a.indexOf)return a.indexOf(b);for(var i=0,l=a.length;i<l;i++)if(a[i]===b)return i;return-1};_.lastIndexOf=function(a,b){if(a.lastIndexOf)return a.lastIndexOf(b);var i=a.length;while(i--)if(a[i]===b)return i;return-1};_.bind=function(a,b){var c=_.rest(arguments,2);return function(){return a.apply(b||j,c.concat(_.toArray(arguments)))}};_.bindAll=function(){var b=Array.prototype.pop.call(arguments);_.each(arguments,function(a){b[a]=_.bind(b[a],b)})};_.delay=function(a,b){var c=_.rest(arguments,2);return setTimeout(function(){return a.apply(a,c)},b)};_.defer=function(a){return _.delay.apply(_,[a,1].concat(_.rest(arguments)))};_.wrap=function(b,c){return function(){var a=[b].concat(_.toArray(arguments));return c.apply(c,a)}};_.compose=function(){var a=_.toArray(arguments);return function(){for(var i=a.length-1;i>=0;i--){arguments=[a[i].apply(this,arguments)]}return arguments[0]}};_.keys=function(c){return _.map(c,function(a,b){return b})};_.values=function(a){return _.map(a,_.identity)};_.extend=function(a,b){for(var c in b)a[c]=b[c];return a};_.clone=function(a){if(_.isArray(a))return a.slice(0);return _.extend({},a)};_.isEqual=function(a,b){if(a===b)return true;var c=typeof(a),btype=typeof(b);if(c!=btype)return false;if(a==b)return true;if(a.isEqual)return a.isEqual(b);if(_.isNumber(a)&&_.isNumber(b)&&isNaN(a)&&isNaN(b))return true;if(c!=='object')return false;var d=_.keys(a),bKeys=_.keys(b);if(d.length!=bKeys.length)return false;for(var e in a)if(!_.isEqual(a[e],b[e]))return false;return true};_.isEmpty=function(a){return(_.isArray(a)?a:_.values(a)).length==0};_.isElement=function(a){return!!(a&&a.nodeType==1)};_.isArray=function(a){return Object.prototype.toString.call(a)=='[object Array]'};_.isFunction=function(a){return Object.prototype.toString.call(a)=='[object Function]'};_.isString=function(a){return Object.prototype.toString.call(a)=='[object String]'};_.isNumber=function(a){return Object.prototype.toString.call(a)=='[object Number]'};_.isUndefined=function(a){return typeof a=='undefined'};_.noConflict=function(){j._=k;return this};_.identity=function(a){return a};_.breakLoop=function(){throw o;};var p=0;_.uniqueId=function(a){var b=p++;return a?a+b:b};_.functions=function(){var a=[];for(var b in _)if(Object.prototype.hasOwnProperty.call(_,b))a.push(b);return _.without(a,'VERSION','prototype','noConflict').sort()};_.template=function(a,b){var c=new Function('obj','var p=[],print=function(){p.push.apply(p,arguments);};'+'with(obj){p.push(\''+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?c(b):c};_.forEach=_.each;_.foldl=_.inject=_.reduce;_.foldr=_.reduceRight;_.filter=_.select;_.every=_.all;_.some=_.any;_.head=_.first;_.tail=_.rest;_.methods=_.functions;var q=function(a,b){return b?_(a).chain():a};_.each(_.functions(),function(a){m.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return q(_[a].apply(_,arguments),this._chain)}});_.each(['pop','push','reverse','shift','sort','splice','unshift'],function(a){m.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});_.each(['concat','join','slice'],function(a){m.prototype[a]=function(){return q(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=true;return this};m.prototype.value=function(){return this._wrapped}})();
+

From 4b2744a75adb3697ae2c99101704abdf512551dd Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 30 Nov 2009 23:20:11 -0500
Subject: [PATCH 068/533] 0.4.6 is on the books, with kylichuku's range
 function

---
 index.html         | 37 ++++++++++++++++++++++++++++++++++---
 test/arrays.js     | 11 +++++++++++
 test/generators.js | 15 ---------------
 test/speed.js      |  4 ++++
 test/test.html     |  1 -
 underscore-min.js  | 17 +++++++++++++++--
 underscore.js      | 46 +++++++++++++++++-----------------------------
 7 files changed, 81 insertions(+), 50 deletions(-)
 delete mode 100644 test/generators.js

diff --git a/index.html b/index.html
index c2b1ac241..dd2bcbb0c 100644
--- a/index.html
+++ b/index.html
@@ -107,11 +107,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.5)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.6)</a></td>
           <td><i>18kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.5)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.6)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -186,7 +186,7 @@ _(lyrics).chain()
       <span class="methods"><a href="#first">first</a>, <a href="#rest">rest</a>, <a href="#last">last</a>,
       <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>,
       <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>,
-      <a href="#lastIndexOf">lastIndexOf</a></span>
+      <a href="#lastIndexOf">lastIndexOf</a>, <a href="#range">range</a></span>
     </p>
 
     <p>
@@ -583,6 +583,28 @@ _.indexOf([1, 2, 3], 2);
       <pre>
 _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
 =&gt; 4
+</pre>
+
+      <p id="range">
+        <b class="header">range</b><code>_.range([start], stop, [step])</code>
+        <br />
+        A function to create flexibly-numbered lists of integers, handy for
+        <tt>each</tt> and <tt>map</tt> loops. <b>start</b>, if omitted, defaults
+        to <i>0</i>; <b>step</b> defaults to <i>1</i>. Returns a list of integers
+        from <b>start</b> to <b>stop</b>, incremented (or decremented) by <b>step</b>,
+        exclusive.
+      </p>
+      <pre>
+_.range(10);
+=&gt; [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+_.range(1, 11);
+=&gt; [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+_.range(0, 30, 5);
+=&gt; [0, 5, 10, 15, 20, 25]
+_.range(0, -10, -1);
+=&gt; [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
+_.range(0);
+=&gt; []
 </pre>
 
       <h2>Function (uh, ahem) Functions</h2>
@@ -930,6 +952,15 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.6</b><br />
+        Added the <tt>range</tt> function, a port of the 
+        <a href="http://docs.python.org/library/functions.html#range">Python 
+        function of the same name</a>, for generating flexibly-numbered lists
+        of integers. Original patch contributed by 
+        <a href="http://github.com/kylichuku">Kirill Ishanov</a>.
+      </p>
+      
       <p>
         <b class="header">0.4.5</b><br />
         Added <tt>rest</tt> for Arrays and arguments objects, and aliased 
diff --git a/test/arrays.js b/test/arrays.js
index 5464756f6..3b0ad20a1 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -86,4 +86,15 @@ $(document).ready(function() {
     equals(result, 5, 'works on an arguments object');
   });
 
+  test("arrays: range", function() {
+    equals(_.range(0).join(''), '', 'range with 0 as a first argument generates an empty array');
+    equals(_.range(4).join(' '), '0 1 2 3', 'range with a single positive argument generates an array of elements 0,1,2,...,n-1');
+    equals(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a & b, a<b generates an array of elements a,a+1,a+2,...,b-2,b-1');
+    equals(_.range(8, 5).join(''), '', 'range with two arguments a & b, b<a generates an empty array');
+    equals(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a & b & c, c < b-a, a < b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) < c');
+    equals(_.range(3, 10, 15).join(''), '3', 'range with three arguments a & b & c, c > b-a, a < b generates an array with a single element, equal to a');
+    equals(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a & b & c, a > b, c < 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
+    equals(_.range(0, -10, -1).join(' '), '0 -1 -2 -3 -4 -5 -6 -7 -8 -9', 'final example in the Python docs');
+  });
+
 });
diff --git a/test/generators.js b/test/generators.js
deleted file mode 100644
index ea7982de1..000000000
--- a/test/generators.js
+++ /dev/null
@@ -1,15 +0,0 @@
-$(document).ready(function() {
-
-  module("Generator functions (range...)");
-
-  test("generators: range", function() {
-    equals(_.range(0).join(''), '', 'range with 0 as a first argument generates an empty array');
-    equals(_.range(4).join(' '), '0 1 2 3', 'range with a single positive argument generates an array of elements 0,1,2,...,n-1');
-    equals(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a & b, a<b generates an array of elements a,a+1,a+2,...,b-2,b-1');
-    equals(_.range(8, 5).join(''), '', 'range with two arguments a & b, b<a generates an empty array');
-    equals(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a & b & c, c < b-a, a < b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) < c');
-    equals(_.range(3, 10, 15).join(''), '3', 'range with three arguments a & b & c, c > b-a, a < b generates an array with a single element, equal to a');
-    equals(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a & b & c, a > b, c < 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
-  });
-});
-
diff --git a/test/speed.js b/test/speed.js
index 8313b1d56..86663a237 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -63,4 +63,8 @@
     return _.intersect(numbers, randomized);
   });
 
+  JSLitmus.test('_.range()', function() {
+    return _.range(1000);
+  });
+
 })();
\ No newline at end of file
diff --git a/test/test.html b/test/test.html
index 86b73318e..c174ea0a6 100644
--- a/test/test.html
+++ b/test/test.html
@@ -7,7 +7,6 @@
   <script type="text/javascript" src="vendor/qunit.js"></script>
   <script type="text/javascript" src="vendor/jslitmus.js"></script>
   <script type="text/javascript" src="../underscore.js"></script>
-  <script type="text/javascript" src="generators.js"></script>
   <script type="text/javascript" src="collections.js"></script>
   <script type="text/javascript" src="arrays.js"></script>
   <script type="text/javascript" src="functions.js"></script>
diff --git a/underscore-min.js b/underscore-min.js
index 2fcd2eb12..80bfa08c2 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,2 +1,15 @@
-(function(){var j=this;var k=j._;var m=function(a){this._wrapped=a};var o=typeof StopIteration!=='undefined'?StopIteration:'__break__';var _=j._=function(a){return new m(a)};if(typeof exports!=='undefined')exports._=_;_.VERSION='0.4.5';_.range=function(a,b,c){if(!b){var b=a;a=0}if(!c)var c=1;var d=Math.ceil((b-a)/c);if(d<0){return[]}var e=new Array(d);var f=0;for(var i=a;(a<=b?b-i>0:i-b>0);i+=c){e[f++]=i}return e};_.each=function(a,b,c){var d=0;try{if(a.forEach){a.forEach(b,c)}else if(a.length){for(var i=0,l=a.length;i<l;i++)b.call(c,a[i],i,a)}else{for(var f in a)if(Object.prototype.hasOwnProperty.call(a,f)){b.call(c,a[f],f,a)}}}catch(e){if(e!=o)throw e;}return a};_.map=function(d,e,f){if(d&&d.map)return d.map(e,f);var g=[];_.each(d,function(a,b,c){g.push(e.call(f,a,b,c))});return g};_.reduce=function(d,e,f,g){if(d&&d.reduce)return d.reduce(_.bind(f,g),e);_.each(d,function(a,b,c){e=f.call(g,e,a,b,c)});return e};_.reduceRight=function(c,d,e,f){if(c&&c.reduceRight)return c.reduceRight(_.bind(e,f),d);var g=_.clone(_.toArray(c)).reverse();_.each(g,function(a,b){d=e.call(f,d,a,b,c)});return d};_.detect=function(d,e,f){var g;_.each(d,function(a,b,c){if(e.call(f,a,b,c)){g=a;_.breakLoop()}});return g};_.select=function(d,e,f){if(d.filter)return d.filter(e,f);var g=[];_.each(d,function(a,b,c){e.call(f,a,b,c)&&g.push(a)});return g};_.reject=function(d,e,f){var g=[];_.each(d,function(a,b,c){!e.call(f,a,b,c)&&g.push(a)});return g};_.all=function(d,e,f){e=e||_.identity;if(d.every)return d.every(e,f);var g=true;_.each(d,function(a,b,c){if(!(g=g&&e.call(f,a,b,c)))_.breakLoop()});return g};_.any=function(d,e,f){e=e||_.identity;if(d.some)return d.some(e,f);var g=false;_.each(d,function(a,b,c){if(g=e.call(f,a,b,c))_.breakLoop()});return g};_.include=function(b,c){if(_.isArray(b))return _.indexOf(b,c)!=-1;var d=false;_.each(b,function(a){if(d=a===c)_.breakLoop()});return d};_.invoke=function(b,c){var d=_.rest(arguments,2);return _.map(b,function(a){return(c?a[c]:a).apply(a,d)})};_.pluck=function(b,c){return _.map(b,function(a){return a[c]})};_.max=function(e,f,g){if(!f&&_.isArray(e))return Math.max.apply(Math,e);var h={computed:-Infinity};_.each(e,function(a,b,c){var d=f?f.call(g,a,b,c):a;d>=h.computed&&(h={value:a,computed:d})});return h.value};_.min=function(e,f,g){if(!f&&_.isArray(e))return Math.min.apply(Math,e);var h={computed:Infinity};_.each(e,function(a,b,c){var d=f?f.call(g,a,b,c):a;d<h.computed&&(h={value:a,computed:d})});return h.value};_.sortBy=function(e,f,g){return _.pluck(_.map(e,function(a,b,c){return{value:a,criteria:f.call(g,a,b,c)}}).sort(function(c,d){var a=c.criteria,b=d.criteria;return a<b?-1:a>b?1:0}),'value')};_.sortedIndex=function(a,b,c){c=c||_.identity;var d=0,high=a.length;while(d<high){var e=(d+high)>>1;c(a[e])<c(b)?d=e+1:high=e}return d};_.toArray=function(b){if(!b)return[];if(b.toArray)return b.toArray();if(_.isArray(b))return b;return _.map(b,function(a){return a})};_.size=function(a){return _.toArray(a).length};_.first=function(a,n){return n?Array.prototype.slice.call(a,0,n):a[0]};_.rest=function(a,b){return Array.prototype.slice.call(a,_.isUndefined(b)?1:b)};_.last=function(a){return a[a.length-1]};_.compact=function(b){return _.select(b,function(a){return!!a})};_.flatten=function(c){return _.reduce(c,[],function(a,b){if(_.isArray(b))return a.concat(_.flatten(b));a.push(b);return a})};_.without=function(b){var c=_.rest(arguments);return _.select(b,function(a){return!_.include(c,a)})};_.uniq=function(c,d){return _.reduce(c,[],function(a,b,i){if(0==i||(d?_.last(a)!=b:!_.include(a,b)))a.push(b);return a})};_.intersect=function(c){var d=_.rest(arguments);return _.select(_.uniq(c),function(b){return _.all(d,function(a){return _.indexOf(a,b)>=0})})};_.zip=function(){var a=_.toArray(arguments);var b=_.max(_.pluck(a,'length'));var c=new Array(b);for(var i=0;i<b;i++)c[i]=_.pluck(a,String(i));return c};_.indexOf=function(a,b){if(a.indexOf)return a.indexOf(b);for(var i=0,l=a.length;i<l;i++)if(a[i]===b)return i;return-1};_.lastIndexOf=function(a,b){if(a.lastIndexOf)return a.lastIndexOf(b);var i=a.length;while(i--)if(a[i]===b)return i;return-1};_.bind=function(a,b){var c=_.rest(arguments,2);return function(){return a.apply(b||j,c.concat(_.toArray(arguments)))}};_.bindAll=function(){var b=Array.prototype.pop.call(arguments);_.each(arguments,function(a){b[a]=_.bind(b[a],b)})};_.delay=function(a,b){var c=_.rest(arguments,2);return setTimeout(function(){return a.apply(a,c)},b)};_.defer=function(a){return _.delay.apply(_,[a,1].concat(_.rest(arguments)))};_.wrap=function(b,c){return function(){var a=[b].concat(_.toArray(arguments));return c.apply(c,a)}};_.compose=function(){var a=_.toArray(arguments);return function(){for(var i=a.length-1;i>=0;i--){arguments=[a[i].apply(this,arguments)]}return arguments[0]}};_.keys=function(c){return _.map(c,function(a,b){return b})};_.values=function(a){return _.map(a,_.identity)};_.extend=function(a,b){for(var c in b)a[c]=b[c];return a};_.clone=function(a){if(_.isArray(a))return a.slice(0);return _.extend({},a)};_.isEqual=function(a,b){if(a===b)return true;var c=typeof(a),btype=typeof(b);if(c!=btype)return false;if(a==b)return true;if(a.isEqual)return a.isEqual(b);if(_.isNumber(a)&&_.isNumber(b)&&isNaN(a)&&isNaN(b))return true;if(c!=='object')return false;var d=_.keys(a),bKeys=_.keys(b);if(d.length!=bKeys.length)return false;for(var e in a)if(!_.isEqual(a[e],b[e]))return false;return true};_.isEmpty=function(a){return(_.isArray(a)?a:_.values(a)).length==0};_.isElement=function(a){return!!(a&&a.nodeType==1)};_.isArray=function(a){return Object.prototype.toString.call(a)=='[object Array]'};_.isFunction=function(a){return Object.prototype.toString.call(a)=='[object Function]'};_.isString=function(a){return Object.prototype.toString.call(a)=='[object String]'};_.isNumber=function(a){return Object.prototype.toString.call(a)=='[object Number]'};_.isUndefined=function(a){return typeof a=='undefined'};_.noConflict=function(){j._=k;return this};_.identity=function(a){return a};_.breakLoop=function(){throw o;};var p=0;_.uniqueId=function(a){var b=p++;return a?a+b:b};_.functions=function(){var a=[];for(var b in _)if(Object.prototype.hasOwnProperty.call(_,b))a.push(b);return _.without(a,'VERSION','prototype','noConflict').sort()};_.template=function(a,b){var c=new Function('obj','var p=[],print=function(){p.push.apply(p,arguments);};'+'with(obj){p.push(\''+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return b?c(b):c};_.forEach=_.each;_.foldl=_.inject=_.reduce;_.foldr=_.reduceRight;_.filter=_.select;_.every=_.all;_.some=_.any;_.head=_.first;_.tail=_.rest;_.methods=_.functions;var q=function(a,b){return b?_(a).chain():a};_.each(_.functions(),function(a){m.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return q(_[a].apply(_,arguments),this._chain)}});_.each(['pop','push','reverse','shift','sort','splice','unshift'],function(a){m.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});_.each(['concat','join','slice'],function(a){m.prototype[a]=function(){return q(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=true;return this};m.prototype.value=function(){return this._wrapped}})();
-
+(function(){var j=this,m=j._,i=function(a){this._wrapped=a},l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.6";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
+d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
+c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});
+return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
+return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
+(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,
+[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=
+b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;1;f+=
+d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(){var a=Array.prototype.pop.call(arguments);b.each(arguments,function(c){a[c]=b.bind(a[c],a)})};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=
+[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,function(c,d){return d})};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;
+var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)==
+"[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)=="[object Number]"};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=
+function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?
+a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a,c){return c?b(a).chain():a};b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,
+arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index dacba7c01..57f2659ab 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,35 +31,7 @@
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Current version.
-  _.VERSION = '0.4.5';
-
-  /*------------------------ Generator Functions: ---------------------------*/
-
-  // Generates an Array, containing an arithmetic progressions
-  // Analog of python's built-in function 'range'
-  _.range = function(start, stop, step) {
-    if (!stop) {
-      var stop = start;
-      start = 0;
-    }
-
-    if (!step) var step = 1;
-
-    var length = Math.ceil((stop - start) / step);
-
-    if (length < 0) {
-      return [];
-    }
-
-    var results = new Array(length);
-    var resIdx = 0;
-
-    for (var i = start; (start <= stop ? stop - i > 0 : i - stop > 0); i += step) {
-      results[resIdx++] = i;
-    }
-
-    return results;
-  };
+  _.VERSION = '0.4.6';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -343,6 +315,22 @@
     return -1;
   };
 
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python range() function. See:
+  // http://docs.python.org/library/functions.html#range
+  _.range = function(start, stop, step) {
+    var a     = _.toArray(arguments);
+    var solo  = a.length <= 1;
+    var start = solo ? 0 : a[0], stop = solo ? a[0] : a[1], step = a[2] || 1;
+    var len   = Math.ceil((stop - start) / step);
+    if (len <= 0) return [];
+    var range = new Array(len);
+    for (var i = start, idx = 0; true; i += step) {
+      if ((step > 0 ? i - stop : stop - i) >= 0) return range;
+      range[idx++] = i;
+    }
+  };
+
   /* ----------------------- Function Functions: -----------------------------*/
 
   // Create a function bound to a given object (assigning 'this', and arguments,

From 6b1ad73cd2c8a596699b471bf4d09b35804f5cf1 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 30 Nov 2009 23:21:48 -0500
Subject: [PATCH 069/533] commented, underscore is 20K now

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index dd2bcbb0c..9abc6c919 100644
--- a/index.html
+++ b/index.html
@@ -108,7 +108,7 @@
       <table>
         <tr>
           <td><a href="underscore.js">Development Version (0.4.6)</a></td>
-          <td><i>18kb, Uncompressed with Comments</i></td>
+          <td><i>20kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
           <td><a href="underscore-min.js">Production Version (0.4.6)</a></td>

From 8ca9739dfe19a457ccae419ad44d347c28dbb804 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 3 Dec 2009 21:03:49 -0500
Subject: [PATCH 070/533] adding a documentcloud credit to the doc page

---
 index.html | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 9abc6c919..68bdb3701 100644
--- a/index.html
+++ b/index.html
@@ -93,14 +93,18 @@
     </p>
 
     <p>
-      Underscore includes a complete <a href="test/test.html">Test &amp; Benchmark Suite</a>
-      for your perusal.
+      A complete <a href="test/test.html">Test &amp; Benchmark Suite</a>
+      is included for your perusal.
     </p>
 
     <p>
       The unabridged source code is
       <a href="http://github.com/documentcloud/underscore/">available on GitHub</a>.
     </p>
+    
+    <p>
+      <i>Underscore is an open-source component of <a href="http://documentcloud.org/">DocumentCloud</a>.</i>
+    </p>
 
     <h2>Downloads <i style="padding-left: 12px; font-size:12px;">(Right-click, and use "Save As")</i></h2>
 

From 79cb7bb17bc2dad7a12544d9452aa6d577c6f0d5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 12:35:11 -0500
Subject: [PATCH 071/533] stop assigning to arguments object in _.compose

---
 underscore.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 57f2659ab..ba8450011 100644
--- a/underscore.js
+++ b/underscore.js
@@ -379,10 +379,11 @@
   _.compose = function() {
     var funcs = _.toArray(arguments);
     return function() {
+      var args = _.toArray(arguments);
       for (var i=funcs.length-1; i >= 0; i--) {
-        arguments = [funcs[i].apply(this, arguments)];
+        args = [funcs[i].apply(this, args)];
       }
-      return arguments[0];
+      return args[0];
     };
   };
 

From a97836a175c6d0bc03533cfc66e051f70cc5a4f8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 12:55:43 -0500
Subject: [PATCH 072/533] a couple of grayrest's speed improvements for
 _.isEqual

---
 underscore.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/underscore.js b/underscore.js
index ba8450011..d76efb223 100644
--- a/underscore.js
+++ b/underscore.js
@@ -420,12 +420,16 @@
     if (atype != btype) return false;
     // Basic equality test (watch out for coercions).
     if (a == b) return true;
+    // Check dates' integer values.
+    if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
     // Both are NaN?
     if (_.isNumber(a) && _.isNumber(b) && isNaN(a) && isNaN(b)) return true;
     // If a is not an object by this point, we can't handle it.
     if (atype !== 'object') return false;
+    // Check for different array lengths before comparing contents.
+    if (!_.isUndefined(a.length) && a.length !== b.length) return false;
     // Nothing else worked, deep compare the contents.
     var aKeys = _.keys(a), bKeys = _.keys(b);
     // Different object sizes?

From 689cd97e03a21b87567f9c615c8aa08890d19e6c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 13:16:44 -0500
Subject: [PATCH 073/533] pushed all hasOwnProperty checks into _.keys,
 speeding _.keys up by about 25%, and using it to simplify other functions:
 _.each, _.isEmpty, _.functions

---
 underscore.js | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/underscore.js b/underscore.js
index d76efb223..e3f938ba1 100644
--- a/underscore.js
+++ b/underscore.js
@@ -43,11 +43,10 @@
       if (obj.forEach) {
         obj.forEach(iterator, context);
       } else if (obj.length) {
-        for (var i=0, l = obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
+        for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
-        for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) {
-          iterator.call(context, obj[key], key, obj);
-        }
+        var keys = _.keys(obj), l = keys.length;
+        for (var i=0; i<l; i++) iterator.call(context, obj[keys[i]], keys[i], obj);
       }
     } catch(e) {
       if (e != breaker) throw e;
@@ -391,7 +390,10 @@
 
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
-    return _.map(obj, function(value, key){ return key; });
+    if(_.isArray(obj)) return _.range(0, obj.length);
+    var keys = [];
+    for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) keys.push(key);
+    return keys;
   };
 
   // Retrieve the values of an object's properties.
@@ -441,7 +443,7 @@
 
   // Is a given array or object empty?
   _.isEmpty = function(obj) {
-    return (_.isArray(obj) ? obj : _.values(obj)).length == 0;
+    return _.keys(obj).length == 0;
   };
 
   // Is a given value a DOM element?
@@ -503,9 +505,7 @@
 
   // Return a sorted list of the function names available in Underscore.
   _.functions = function() {
-    var functions = [];
-    for (var key in _) if (Object.prototype.hasOwnProperty.call(_, key)) functions.push(key);
-    return _.without(functions, 'VERSION', 'prototype', 'noConflict').sort();
+    return _.without(_.keys(_), 'VERSION', 'prototype', 'noConflict').sort();
   };
 
   // JavaScript templating a-la ERB, pilfered from John Resig's

From 86c2ad2b1f84c00859fd083780a72681d45e9c53 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 13:20:56 -0500
Subject: [PATCH 074/533] maintain a single reference to the Object.prototype

---
 underscore.js | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index e3f938ba1..09e781a42 100644
--- a/underscore.js
+++ b/underscore.js
@@ -30,6 +30,9 @@
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
+  // Maintain a reference to the Object prototype for quick access.
+  var oproto = Object.prototype;
+
   // Current version.
   _.VERSION = '0.4.6';
 
@@ -392,7 +395,7 @@
   _.keys = function(obj) {
     if(_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
-    for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) keys.push(key);
+    for (var key in obj) if (oproto.hasOwnProperty.call(obj, key)) keys.push(key);
     return keys;
   };
 
@@ -453,22 +456,22 @@
 
   // Is a given value a real Array?
   _.isArray = function(obj) {
-    return Object.prototype.toString.call(obj) == '[object Array]';
+    return oproto.toString.call(obj) == '[object Array]';
   };
 
   // Is a given value a Function?
   _.isFunction = function(obj) {
-    return Object.prototype.toString.call(obj) == '[object Function]';
+    return oproto.toString.call(obj) == '[object Function]';
   };
 
   // Is a given value a String?
   _.isString = function(obj) {
-    return Object.prototype.toString.call(obj) == '[object String]';
+    return oproto.toString.call(obj) == '[object String]';
   };
 
   // Is a given value a Number?
   _.isNumber = function(obj) {
-    return Object.prototype.toString.call(obj) == '[object Number]';
+    return oproto.toString.call(obj) == '[object Number]';
   };
 
   // Is a given variable undefined?

From 7a1f92a8c5a9c6b0933abd88e84098dc6d5c582f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 13:43:16 -0500
Subject: [PATCH 075/533] documentation for Underscore 0.4.7, with isDate,
 isNaN, and isNull

---
 index.html      | 53 +++++++++++++++++++++++++++++++++++++++++++++----
 test/objects.js | 20 +++++++++++++++++++
 test/utility.js |  4 ++--
 underscore.js   | 22 +++++++++++++++++---
 4 files changed, 90 insertions(+), 9 deletions(-)

diff --git a/index.html b/index.html
index 68bdb3701..0c48b1c99 100644
--- a/index.html
+++ b/index.html
@@ -81,7 +81,7 @@
     </p>
 
     <p>
-      Underscore provides 50-odd functions that support both the usual
+      Underscore provides 60-odd functions that support both the usual
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash;
       as well as more specialized helpers: function binding, javascript
       templating, deep equality testing, and so on. It delegates to built-in
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.6)</a></td>
+          <td><a href="underscore.js">Development Version (0.4.7)</a></td>
           <td><i>20kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.6)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.4.7)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -207,7 +207,9 @@ _(lyrics).chain()
       <a href="#extend">extend</a>, <a href="#clone">clone</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
-      <a href="#isNumber">isNumber</a>, <a href="#isUndefined">isUndefined</a>
+      <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>
+      <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>, 
+      <a href="#isUndefined">isUndefined</a>
       </span>
     </p>
 
@@ -828,6 +830,44 @@ _.isFunction("moe");
       <pre>
 _.isNumber(8.4 * 5);
 =&gt; true
+</pre>
+
+      <p id="isDate">
+        <b class="header">isDate</b><code>_.isDate(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is a Date.
+      </p>
+      <pre>
+_.isDate(new Date());
+=&gt; true
+</pre>
+
+      <p id="isNaN">
+        <b class="header">isNaN</b><code>_.isNaN(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is <i>NaN</i>.<br /> Note: this is not
+        the same as the native <b>isNaN</b> function, which will also return
+        true if the variable is <i>undefined</i>.
+      </p>
+      <pre>
+_.isNaN(NaN);
+=&gt; true
+isNaN(undefined);
+=&gt; true
+_.isNaN(undefined);
+=&gt; false
+</pre>
+
+      <p id="isNull">
+        <b class="header">isNull</b><code>_.isNull(object)</code>
+        <br />
+        Returns <i>true</i> if the value of <b>object</b> is <i>null</i>.
+      </p>
+      <pre>
+_.isNull(null);
+=&gt; true
+_.isNull(undefined);
+=&gt; false
 </pre>
 
       <p id="isUndefined">
@@ -956,6 +996,11 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.4.7</b><br />
+        
+      </p>
+      
       <p>
         <b class="header">0.4.6</b><br />
         Added the <tt>range</tt> function, a port of the 
diff --git a/test/objects.js b/test/objects.js
index d76d3e8e2..355b2937b 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -36,6 +36,7 @@ $(document).ready(function() {
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
     ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
     ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
+    ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
   });
 
   test("objects: isEmpty", function() {
@@ -75,6 +76,25 @@ $(document).ready(function() {
     ok(_.isFunction(_.isFunction), 'but functions are');
   });
 
+  test("objects: isDate", function() {
+    ok(!_.isDate(100), 'numbers are not dates');
+    ok(!_.isDate({}), 'objects are not dates');
+    ok(_.isDate(new Date()), 'but dates are');
+  });
+
+  test("objects: isNaN", function() {
+    ok(!_.isNaN(undefined), 'undefined is not NaN');
+    ok(!_.isNaN(null), 'null is not NaN');
+    ok(!_.isNaN(0), '0 is not NaN');
+    ok(_.isNaN(NaN), 'but NaN is');
+  });
+
+  test("objects: isNull", function() {
+    ok(!_.isNull(undefined), 'undefined is not null');
+    ok(!_.isNull(NaN), 'NaN is not null');
+    ok(_.isNull(null), 'but null is');
+  });
+
   test("objects: isUndefined", function() {
     ok(!_.isUndefined(1), 'numbers are defined');
     ok(!_.isUndefined(null), 'null is defined');
diff --git a/test/utility.js b/test/utility.js
index 9f6c855e9..0d02b3041 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -34,8 +34,8 @@ $(document).ready(function() {
     var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
-    "indexOf", "inject", "intersect", "invoke", "isArray", "isElement", "isEmpty", "isEqual",
-    "isFunction", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
+    "indexOf", "inject", "intersect", "invoke", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
+    "isFunction", "isNaN", "isNull", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "methods", "min", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
diff --git a/underscore.js b/underscore.js
index 09e781a42..cbdf3e2e7 100644
--- a/underscore.js
+++ b/underscore.js
@@ -34,7 +34,7 @@
   var oproto = Object.prototype;
 
   // Current version.
-  _.VERSION = '0.4.6';
+  _.VERSION = '0.4.7';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -426,11 +426,11 @@
     // Basic equality test (watch out for coercions).
     if (a == b) return true;
     // Check dates' integer values.
-    if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();
+    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
     // Both are NaN?
-    if (_.isNumber(a) && _.isNumber(b) && isNaN(a) && isNaN(b)) return true;
+    if (_.isNaN(a) && _.isNaN(b)) return true;
     // If a is not an object by this point, we can't handle it.
     if (atype !== 'object') return false;
     // Check for different array lengths before comparing contents.
@@ -474,6 +474,22 @@
     return oproto.toString.call(obj) == '[object Number]';
   };
 
+  // Is a given value a Date?
+  _.isDate = function(obj) {
+    return oproto.toString.call(obj) == '[object Date]';
+  };
+
+  // Is the given value NaN -- this one is interesting. NaN != NaN, and
+  // isNaN(undefined) == true, so we make sure it's a number first.
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && isNaN(obj);
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
   // Is a given variable undefined?
   _.isUndefined = function(obj) {
     return typeof obj == 'undefined';

From 4bd535e7f11ee4570a534e30ced65b93eae4894f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 14:13:25 -0500
Subject: [PATCH 076/533] Underscore 0.4.7 is done

---
 Rakefile          |  9 +++++++++
 index.html        |  5 ++++-
 underscore-min.js | 30 +++++++++++++++---------------
 underscore.js     | 14 +++++++-------
 4 files changed, 35 insertions(+), 23 deletions(-)
 create mode 100644 Rakefile

diff --git a/Rakefile b/Rakefile
new file mode 100644
index 000000000..6af14bb6d
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,9 @@
+require 'rubygems'
+require 'closure-compiler'
+
+desc "Use the Closure Compiler to compress Underscore.js"
+task :build do
+  js  = File.open('underscore.js', 'r')
+  min = Closure::Compiler.new.compile(js)
+  File.open('underscore-min.js', 'w') {|f| f.write(min) }
+end
\ No newline at end of file
diff --git a/index.html b/index.html
index 0c48b1c99..fd49a24fa 100644
--- a/index.html
+++ b/index.html
@@ -998,7 +998,10 @@ _([1, 2, 3]).value();
       
       <p>
         <b class="header">0.4.7</b><br />
-        
+        Added <tt>isDate</tt>, <tt>isNaN</tt>, and <tt>isNull</tt>, for completeness.
+        Optimizations for <tt>isEqual</tt> when checking equality between Arrays
+        or Dates. <tt>_.keys</tt> is now <small><i><b>25%&ndash;2X</b></i></small> faster (depending on your
+        browser) which speeds up the functions that rely on it, such as <tt>_.each</tt>.
       </p>
       
       <p>
diff --git a/underscore-min.js b/underscore-min.js
index 80bfa08c2..18b4bcfbc 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,15 +1,15 @@
-(function(){var j=this,m=j._,i=function(a){this._wrapped=a},l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.4.6";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)Object.prototype.hasOwnProperty.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=l)throw g;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
-d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
-c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});
-return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
-return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
-(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,
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-[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=a.length-1;c>=0;c--)arguments=[a[c].apply(this,arguments)];return arguments[0]}};b.keys=function(a){return b.map(a,function(c,d){return d})};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;
-var d=typeof a,e=typeof c;if(d!=e)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isNumber(a)&&b.isNumber(c)&&isNaN(a)&&isNaN(c))return true;if(d!=="object")return false;d=b.keys(a);e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return(b.isArray(a)?a:b.values(a)).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return Object.prototype.toString.call(a)==
-"[object Array]"};b.isFunction=function(a){return Object.prototype.toString.call(a)=="[object Function]"};b.isString=function(a){return Object.prototype.toString.call(a)=="[object String]"};b.isNumber=function(a){return Object.prototype.toString.call(a)=="[object Number]"};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=
-function(){var a=[];for(var c in b)Object.prototype.hasOwnProperty.call(b,c)&&a.push(c);return b.without(a,"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?
-a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a,c){return c?b(a).chain():a};b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,
-arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+(function(){var k=this,n=k._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=k._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var j=Object.prototype;b.VERSION="0.4.7";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&
+a.map)return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});
+return e};b.select=function(a,c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=
+c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&
+(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<
+f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=
+function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=
+b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);
+f=a;for(var g=0;1;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||k,d.concat(b.toArray(arguments)))}};b.bindAll=function(){var a=Array.prototype.pop.call(arguments);b.each(arguments,function(c){a[c]=b.bind(a[c],a)})};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=
+[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=function(a){if(b.isArray(a))return b.range(0,a.length);var c=[];for(var d in a)j.hasOwnProperty.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);
+return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(a.isEqual)return a.isEqual(c);if(b.isNaN(a)&&b.isNaN(c))return true;if(d!=="object")return false;if(!b.isUndefined(a.length)&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
+0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return j.toString.call(a)=="[object Array]"};b.isFunction=function(a){return j.toString.call(a)=="[object Function]"};b.isString=function(a){return j.toString.call(a)=="[object String]"};b.isNumber=function(a){return j.toString.call(a)=="[object Number]"};b.isDate=function(a){return j.toString.call(a)=="[object Date]"};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=
+function(a){return typeof a=="undefined"};b.noConflict=function(){k._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var o=0;b.uniqueId=function(a){var c=o++;return a?a+c:c};b.functions=function(){return b.without(b.keys(b),"VERSION","prototype","noConflict").sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,
+"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return l(b[a].apply(b,arguments),this._chain)}});b.each(["pop",
+"push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return l(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index cbdf3e2e7..49d5b08c1 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,7 +31,7 @@
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Maintain a reference to the Object prototype for quick access.
-  var oproto = Object.prototype;
+  var objPro = Object.prototype;
 
   // Current version.
   _.VERSION = '0.4.7';
@@ -395,7 +395,7 @@
   _.keys = function(obj) {
     if(_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
-    for (var key in obj) if (oproto.hasOwnProperty.call(obj, key)) keys.push(key);
+    for (var key in obj) if (objPro.hasOwnProperty.call(obj, key)) keys.push(key);
     return keys;
   };
 
@@ -456,27 +456,27 @@
 
   // Is a given value a real Array?
   _.isArray = function(obj) {
-    return oproto.toString.call(obj) == '[object Array]';
+    return objPro.toString.call(obj) == '[object Array]';
   };
 
   // Is a given value a Function?
   _.isFunction = function(obj) {
-    return oproto.toString.call(obj) == '[object Function]';
+    return objPro.toString.call(obj) == '[object Function]';
   };
 
   // Is a given value a String?
   _.isString = function(obj) {
-    return oproto.toString.call(obj) == '[object String]';
+    return objPro.toString.call(obj) == '[object String]';
   };
 
   // Is a given value a Number?
   _.isNumber = function(obj) {
-    return oproto.toString.call(obj) == '[object Number]';
+    return objPro.toString.call(obj) == '[object Number]';
   };
 
   // Is a given value a Date?
   _.isDate = function(obj) {
-    return oproto.toString.call(obj) == '[object Date]';
+    return objPro.toString.call(obj) == '[object Date]';
   };
 
   // Is the given value NaN -- this one is interesting. NaN != NaN, and

From 66dc6c2ac1b4c4d74ad2f4d044cba0d056549957 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 22:48:40 -0500
Subject: [PATCH 077/533] shrunk down all of the 'is' functions into a single
 generation, added isRegExp, added a regexp equality test to isEqual, after
 grayrest's patch

---
 test/objects.js |  1 +
 test/utility.js |  2 +-
 underscore.js   | 50 ++++++++++++++++++-------------------------------
 3 files changed, 20 insertions(+), 33 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 355b2937b..a6b63e0d4 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -37,6 +37,7 @@ $(document).ready(function() {
     ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
     ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
+    ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
   });
 
   test("objects: isEmpty", function() {
diff --git a/test/utility.js b/test/utility.js
index 0d02b3041..99aa7cab2 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -35,7 +35,7 @@ $(document).ready(function() {
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
-    "isFunction", "isNaN", "isNull", "isNumber", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
+    "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "methods", "min", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
diff --git a/underscore.js b/underscore.js
index 49d5b08c1..b734430cb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -30,9 +30,6 @@
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
-  // Maintain a reference to the Object prototype for quick access.
-  var objPro = Object.prototype;
-
   // Current version.
   _.VERSION = '0.4.7';
 
@@ -395,7 +392,7 @@
   _.keys = function(obj) {
     if(_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
-    for (var key in obj) if (objPro.hasOwnProperty.call(obj, key)) keys.push(key);
+    for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) keys.push(key);
     return keys;
   };
 
@@ -425,16 +422,22 @@
     if (atype != btype) return false;
     // Basic equality test (watch out for coercions).
     if (a == b) return true;
-    // Check dates' integer values.
-    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
+    // Check dates' integer values.
+    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
     // Both are NaN?
     if (_.isNaN(a) && _.isNaN(b)) return true;
+    // Compare regular expressions.
+    if (_.isRegExp(a) && _.isRegExp(b))
+      return a.source     === b.source &&
+             a.global     === b.global &&
+             a.ignoreCase === b.ignoreCase &&
+             a.multiline  === b.multiline;
     // If a is not an object by this point, we can't handle it.
     if (atype !== 'object') return false;
     // Check for different array lengths before comparing contents.
-    if (!_.isUndefined(a.length) && a.length !== b.length) return false;
+    if (a.length && (a.length !== b.length)) return false;
     // Nothing else worked, deep compare the contents.
     var aKeys = _.keys(a), bKeys = _.keys(b);
     // Different object sizes?
@@ -454,31 +457,6 @@
     return !!(obj && obj.nodeType == 1);
   };
 
-  // Is a given value a real Array?
-  _.isArray = function(obj) {
-    return objPro.toString.call(obj) == '[object Array]';
-  };
-
-  // Is a given value a Function?
-  _.isFunction = function(obj) {
-    return objPro.toString.call(obj) == '[object Function]';
-  };
-
-  // Is a given value a String?
-  _.isString = function(obj) {
-    return objPro.toString.call(obj) == '[object String]';
-  };
-
-  // Is a given value a Number?
-  _.isNumber = function(obj) {
-    return objPro.toString.call(obj) == '[object Number]';
-  };
-
-  // Is a given value a Date?
-  _.isDate = function(obj) {
-    return objPro.toString.call(obj) == '[object Date]';
-  };
-
   // Is the given value NaN -- this one is interesting. NaN != NaN, and
   // isNaN(undefined) == true, so we make sure it's a number first.
   _.isNaN = function(obj) {
@@ -495,6 +473,14 @@
     return typeof obj == 'undefined';
   };
 
+  // Define the isArray, isDate, isFunction, isNumber, isRegExp, and
+  // isString functions based on their toString identifiers.
+  _.each(['Array', 'Date', 'Function', 'Number', 'RegExp', 'String'], function(type) {
+    _['is' + type] = function(obj) {
+      return Object.prototype.toString.call(obj) == '[object ' + type + ']';
+    };
+  });
+
   /* -------------------------- Utility Functions: -------------------------- */
 
   // Run Underscore.js in noConflict mode, returning the '_' variable to its

From 53122d08bd7ed9f98ac42c5eda4e3093a6e46770 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 22:50:38 -0500
Subject: [PATCH 078/533] documenting isRegExp

---
 index.html | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index fd49a24fa..b309c0046 100644
--- a/index.html
+++ b/index.html
@@ -207,7 +207,7 @@ _(lyrics).chain()
       <a href="#extend">extend</a>, <a href="#clone">clone</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
-      <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>
+      <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
       <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>, 
       <a href="#isUndefined">isUndefined</a>
       </span>
@@ -840,6 +840,16 @@ _.isNumber(8.4 * 5);
       <pre>
 _.isDate(new Date());
 =&gt; true
+</pre>
+
+      <p id="isRegExp">
+        <b class="header">isRegExp</b><code>_.isRegExp(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is a RegExp.
+      </p>
+      <pre>
+_.isRegExp(/moe/);
+=&gt; true
 </pre>
 
       <p id="isNaN">

From 2875f3145d6d90acc97b7e3df1de5ae075f3e569 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 23:09:36 -0500
Subject: [PATCH 079/533] added a links section to the documentation,  with
 Underscore.lua and collections libraries galore

---
 index.html | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/index.html b/index.html
index b309c0046..70669fc13 100644
--- a/index.html
+++ b/index.html
@@ -1004,6 +1004,35 @@ _([1, 2, 3]).value();
 =&gt; [1, 2, 3]
 </pre>
 
+      <h2>Links &amp; Suggested Reading</h2>
+      
+      <p>
+        <a href="http://mirven.github.com/underscore.lua/">Underscore.lua</a>,
+        a Lua port of the functions that are applicable in both languages. 
+        Includes OOP-wrapping and chaining.
+        The <a href="http://github.com/mirven/underscore.lua">source</a> is 
+        available on GitHub.
+      </p>
+      
+      <p>
+        Ruby's <a href="http://ruby-doc.org/core/classes/Enumerable.html">Enumerable</a> module.
+      </p>
+      
+      <p>
+        <a href="http://www.prototypejs.org/">Prototype.js</a>, which provides
+        JavaScript with collection functions in the manner closest to Ruby's Enumerable.
+      </p>
+        
+      <p>
+        Oliver Steele's 
+        <a href="http://osteele.com/sources/javascript/functional/">Functional JavaScript</a>,
+        which includes comprehensive higher-order function support as well as string lambdas.
+      </p>
+      
+      <p>
+        Python's <a href="http://docs.python.org/library/itertools.html">itertools</a>.
+      </p>
+
       <h2>Change Log</h2>
       
       <p>

From 06c74e76f085adf61a8a3690d3e84c8967c4d201 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 23:10:44 -0500
Subject: [PATCH 080/533] added an isRegExp test

---
 test/objects.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index a6b63e0d4..97556747c 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -83,6 +83,11 @@ $(document).ready(function() {
     ok(_.isDate(new Date()), 'but dates are');
   });
 
+  test("objects: isRegExp", function() {
+    ok(!_.isRegExp(_.identity), 'functions are not RegExps');
+    ok(_.isRegExp(/identity/), 'but RegExps are');
+  });
+
   test("objects: isNaN", function() {
     ok(!_.isNaN(undefined), 'undefined is not NaN');
     ok(!_.isNaN(null), 'null is not NaN');

From 39001bd02937106c7841b9d2bc1521aaccf32d38 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 6 Dec 2009 23:54:41 -0500
Subject: [PATCH 081/533] API changes: _.bindAll now takes the context object
 as the first parameter, instead of the last, and _.functions (_.methods) now
 takes an explicitreceiver, returning a list of its methods

---
 index.html        | 44 +++++++++++++++++++++++++-------------------
 test/functions.js | 40 +++++++++++++++++++++++++---------------
 test/objects.js   | 14 ++++++++++++++
 test/utility.js   | 12 ------------
 underscore.js     | 19 +++++++++----------
 5 files changed, 73 insertions(+), 56 deletions(-)

diff --git a/index.html b/index.html
index 70669fc13..0d49f955d 100644
--- a/index.html
+++ b/index.html
@@ -204,7 +204,7 @@ _(lyrics).chain()
       <b>Objects</b>
       <br />
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
-      <a href="#extend">extend</a>, <a href="#clone">clone</a>,
+      <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#clone">clone</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
       <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
@@ -616,10 +616,10 @@ _.range(0);
       <h2>Function (uh, ahem) Functions</h2>
 
       <p id="bind">
-        <b class="header">bind</b><code>_.bind(function, context, [*arguments])</code>
+        <b class="header">bind</b><code>_.bind(function, object, [*arguments])</code>
         <br />
-        Bind a <b>function</b> to a <b>context</b> object, meaning that whenever
-        the function is called, the value of <i>this</i> will be the <b>context</b>.
+        Bind a <b>function</b> to an <b>object</b>, meaning that whenever
+        the function is called, the value of <i>this</i> will be the <b>object</b>.
         Optionally, bind <b>arguments</b> to the <b>function</b> to pre-fill them,
         also known as <b>currying</b>.
       </p>
@@ -631,13 +631,14 @@ func();
 </pre>
 
       <p id="bindAll">
-        <b class="header">bindAll</b><code>_.bindAll(*methodNames, context)</code>
+        <b class="header">bindAll</b><code>_.bindAll(object, [*methodNames])</code>
         <br />
-        Binds a number of methods on the <b>context</b> object, specified by
+        Binds a number of methods on the <b>object</b>, specified by
         <b>methodNames</b>, to be run in the context of that object whenever they
         are invoked. Very handy for binding functions that are going to be used
         as event handlers, which would otherwise be invoked with a fairly useless
-        <i>this</i>.
+        <i>this</i>. If no <b>methodNames</b> are provided, all of the object's
+        function properties will be bound to it.
       </p>
       <pre>
 var buttonView = {
@@ -645,7 +646,11 @@ var buttonView = {
   onClick : function(){ alert('clicked: ' + this.label); },
   onHover : function(){ console.log('hovering: ' + this.label); }
 };
-_.bindAll('onClick', 'onHover', buttonView);
+
+// In this case, the following two lines have the same effect.
+_.bindAll(buttonView, 'onClick', 'onHover');
+_(buttonView).bindAll();
+
 jQuery('#underscore_button').bind('click', buttonView.onClick);
 =&gt; When the button is clicked, this.label will have the correct value...
 </pre>
@@ -729,6 +734,18 @@ _.keys({one : 1, two : 2, three : 3});
       <pre>
 _.values({one : 1, two : 2, three : 3});
 =&gt; [1, 2, 3]
+</pre>
+
+      <p id="functions">
+        <b class="header">functions</b><code>_.functions(object)</code>
+        <span class="alias">Alias: <b>methods</b></span>
+        <br />
+        Returns a sorted list of the names of every method in an object &mdash;
+        that is to say, the name of every function property of the object. 
+      </p>
+      <pre>
+_.functions(_);
+=&gt; ["all", "any", "bind", "bindAll", "clone", "compact", "compose" ...
 </pre>
 
       <p id="extend">
@@ -939,17 +956,6 @@ result;
       <pre>
 _.uniqueId('contact_');
 =&gt; 'contact_104'
-</pre>
-
-      <p id="functions">
-        <b class="header">functions</b><code>_.functions([prefix])</code>
-        <span class="alias">Alias: <b>methods</b></span>
-        <br />
-        Returns a sorted list of the name of every function in Underscore.
-      </p>
-      <pre>
-_.functions();
-=&gt; ["all", "any", "bind", "bindAll", "clone", "compact", "compose" ...
 </pre>
 
       <p id="template">
diff --git a/test/functions.js b/test/functions.js
index a764d75c0..7633a6b08 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -1,27 +1,27 @@
 $(document).ready(function() {
-  
+
   module("Function functions (bind, bindAll, and so on...)");
-    
+
   test("functions: bind", function() {
     var context = {name : 'moe'};
     var func = function(arg) { return "name: " + (this.name || arg); };
     var bound = _.bind(func, context);
     equals(bound(), 'name: moe', 'can bind a function to a context');
-    
+
     bound = _(func).bind(context);
     equals(bound(), 'name: moe', 'can do OO-style binding');
-    
+
     bound = _.bind(func, null, 'curly');
     equals(bound(), 'name: curly', 'can bind without specifying a context');
-    
+
     func = function(salutation, name) { return salutation + ': ' + name; };
     func = _.bind(func, this, 'hello');
     equals(func('moe'), 'hello: moe', 'the function was partially applied in advance');
-    
+
     var func = _.bind(func, this, 'curly');
-    equals(func(), 'hello: curly', 'the function was completely applied in advance');   
+    equals(func(), 'hello: curly', 'the function was completely applied in advance');
   });
-  
+
   test("functions: bindAll", function() {
     var curly = {name : 'curly'}, moe = {
       name    : 'moe',
@@ -29,39 +29,49 @@ $(document).ready(function() {
       sayHi   : function() { return 'hi: ' + this.name; }
     };
     curly.getName = moe.getName;
-    _.bindAll('getName', 'sayHi', moe);
+    _.bindAll(moe, 'getName', 'sayHi');
     curly.sayHi = moe.sayHi;
     equals(curly.getName(), 'name: curly', 'unbound function is bound to current object');
     equals(curly.sayHi(), 'hi: moe', 'bound function is still bound to original object');
+
+    curly = {name : 'curly'};
+    moe = {
+      name    : 'moe',
+      getName : function() { return 'name: ' + this.name; },
+      sayHi   : function() { return 'hi: ' + this.name; }
+    };
+    _.bindAll(moe);
+    curly.sayHi = moe.sayHi;
+    equals(curly.sayHi(), 'hi: moe', 'calling bindAll with no arguments binds all functions to the object');
   });
-  
+
   asyncTest("functions: delay", function() {
     var delayed = false;
     _.delay(function(){ delayed = true; }, 100);
     _.delay(function(){ ok(!delayed, "didn't delay the function quite yet"); }, 50);
     _.delay(function(){ ok(delayed, 'delayed the function'); start(); }, 150);
   });
-  
+
   asyncTest("functions: defer", function() {
     var deferred = false;
     _.defer(function(bool){ deferred = bool; }, true);
     _.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
   });
-  
+
   test("functions: wrap", function() {
     var greet = function(name){ return "hi: " + name; };
     var backwards = _.wrap(greet, function(func, name){ return func(name) + ' ' + name.split('').reverse().join(''); });
     equals(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
   });
-  
+
   test("functions: compose", function() {
     var greet = function(name){ return "hi: " + name; };
     var exclaim = function(sentence){ return sentence + '!'; };
     var composed = _.compose(exclaim, greet);
     equals(composed('moe'), 'hi: moe!', 'can compose a function that takes another');
-    
+
     composed = _.compose(greet, exclaim);
     equals(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
   });
-  
+
 });
diff --git a/test/objects.js b/test/objects.js
index 97556747c..18c4b3c2b 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -10,6 +10,20 @@ $(document).ready(function() {
     equals(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
   });
 
+  test("objects: functions", function() {
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
+    "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
+    "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
+    "indexOf", "inject", "intersect", "invoke", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
+    "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
+    "methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
+    "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
+    "uniqueId", "values", "without", "wrap", "zip"];
+    ok(_(expected).isEqual(_.methods(_)), 'provides a sorted list of functions');
+    var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
+    ok(_.isEqual(['b', 'd'], _.functions(obj)), 'can grab the function names of any passed-in object');
+  });
+
   test("objects: extend", function() {
     var source = {name : 'moe'}, dest = {age : 50};
     _.extend(dest, source);
diff --git a/test/utility.js b/test/utility.js
index 99aa7cab2..92bac6b2f 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -30,18 +30,6 @@ $(document).ready(function() {
     equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
 
-  test("utility: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
-    "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
-    "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
-    "indexOf", "inject", "intersect", "invoke", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
-    "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "methods", "min", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
-    "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
-    "uniqueId", "values", "without", "wrap", "zip"];
-    ok(_(expected).isEqual(_.methods()), 'provides a sorted list of functions');
-  });
-
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
diff --git a/underscore.js b/underscore.js
index b734430cb..cf3c6c3f7 100644
--- a/underscore.js
+++ b/underscore.js
@@ -334,20 +334,19 @@
 
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
-  _.bind = function(func, context) {
+  _.bind = function(func, obj) {
     var args = _.rest(arguments, 2);
     return function() {
-      return func.apply(context || root, args.concat(_.toArray(arguments)));
+      return func.apply(obj || root, args.concat(_.toArray(arguments)));
     };
   };
 
   // Bind all of an object's methods to that object. Useful for ensuring that
   // all callbacks defined on an object belong to it.
-  _.bindAll = function() {
-    var context = Array.prototype.pop.call(arguments);
-    _.each(arguments, function(methodName) {
-      context[methodName] = _.bind(context[methodName], context);
-    });
+  _.bindAll = function(obj) {
+    var funcs = _.rest(arguments);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    _.each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
   };
 
   // Delays a function for the given number of milliseconds, and then calls
@@ -509,8 +508,8 @@
   };
 
   // Return a sorted list of the function names available in Underscore.
-  _.functions = function() {
-    return _.without(_.keys(_), 'VERSION', 'prototype', 'noConflict').sort();
+  _.functions = function(obj) {
+    return _.select(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
 
   // JavaScript templating a-la ERB, pilfered from John Resig's
@@ -551,7 +550,7 @@
   };
 
   // Add all of the Underscore functions to the wrapper object.
-  _.each(_.functions(), function(name) {
+  _.each(_.functions(_), function(name) {
     wrapper.prototype[name] = function() {
       Array.prototype.unshift.call(arguments, this._wrapped);
       return result(_[name].apply(_, arguments), this._chain);

From f2670259d1a5895a0e56711ce24478f097bf52d3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 7 Dec 2009 00:14:07 -0500
Subject: [PATCH 082/533] 0.5.0 is out, with variants of grayrest's patches

---
 index.html        | 17 +++++++++++++++--
 underscore-min.js | 30 +++++++++++++++---------------
 underscore.js     |  3 ++-
 3 files changed, 32 insertions(+), 18 deletions(-)

diff --git a/index.html b/index.html
index 0d49f955d..a881ae043 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.4.7)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.0)</a></td>
           <td><i>20kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.4.7)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.0)</a></td>
           <td><i>2kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1041,6 +1041,19 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.0</b><br />
+        <b>[API Changes]</b> <tt>_.bindAll</tt> now takes the context object as 
+        its first parameter. If no method names are passed, all of the context 
+        object's methods are bound to it, enabling chaining and easier binding.
+        <tt>_.functions</tt> now takes a single argument and returns the names 
+        of its Function properties. Calling <tt>_.functions(_)</tt> will get you
+        the previous behavior.
+        Added <tt>_.isRegExp</tt> so that <tt>isEqual</tt> can now test for RegExp equality.
+        All of the "is" functions have been shrunk down into a single definition.
+        <a href="http://github.com/grayrest/">Karl Guertin</a> contributed patches.
+      </p>
+      
       <p>
         <b class="header">0.4.7</b><br />
         Added <tt>isDate</tt>, <tt>isNaN</tt>, and <tt>isNull</tt>, for completeness.
diff --git a/underscore-min.js b/underscore-min.js
index 18b4bcfbc..4df2f6843 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,15 +1,15 @@
-(function(){var k=this,n=k._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=k._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var j=Object.prototype;b.VERSION="0.4.7";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&
-a.map)return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});
-return e};b.select=function(a,c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=
-c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&
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-return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(a.isEqual)return a.isEqual(c);if(b.isNaN(a)&&b.isNaN(c))return true;if(d!=="object")return false;if(!b.isUndefined(a.length)&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
-0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return j.toString.call(a)=="[object Array]"};b.isFunction=function(a){return j.toString.call(a)=="[object Function]"};b.isString=function(a){return j.toString.call(a)=="[object String]"};b.isNumber=function(a){return j.toString.call(a)=="[object Number]"};b.isDate=function(a){return j.toString.call(a)=="[object Date]"};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=
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-"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return l(b[a].apply(b,arguments),this._chain)}});b.each(["pop",
-"push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=function(){Array.prototype[a].apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return l(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+(function(){var j=this,m=j._,i=function(a){this._wrapped=a},l=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;b.VERSION="0.5.0";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(a.length)for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=l)throw h;}return a};b.map=function(a,c,d){if(a&&a.map)return a.map(c,
+d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&a.reduce)return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&a.reduceRight)return a.reduceRight(b.bind(d,e),c);var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,
+c,d){if(a.filter)return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a.every)return a.every(c,d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a.some)return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});
+return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});
+return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?
+(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c){return c?Array.prototype.slice.call(a,0,c):a[0]};b.rest=function(a,c){return Array.prototype.slice.call(a,b.isUndefined(c)?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,
+[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=
+b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;1;f+=
+d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);b.each(c,function(d){a[d]=b.bind(a[d],a)});return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=
+[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=function(a){if(b.isArray(a))return b.range(0,a.length);var c=[];for(var d in a)Object.prototype.hasOwnProperty.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);
+return b.extend({},a)};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);
+if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.each(["Array","Date","Function","Number","RegExp","String"],function(a){b["is"+a]=function(c){return Object.prototype.toString.call(c)=="[object "+a+"]"}});
+b.noConflict=function(){j._=m;return this};b.identity=function(a){return a};b.breakLoop=function(){throw l;};var n=0;b.uniqueId=function(a){var c=n++;return a?a+c:c};b.functions=function(a){return b.select(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+
+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){i.prototype[a]=function(){Array.prototype.unshift.call(arguments,this._wrapped);return k(b[a].apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){i.prototype[a]=
+function(){Array.prototype[a].apply(this._wrapped,arguments);return k(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){i.prototype[a]=function(){return k(Array.prototype[a].apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index cf3c6c3f7..5d781fe6f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,7 +31,7 @@
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Current version.
-  _.VERSION = '0.4.7';
+  _.VERSION = '0.5.0';
 
   /*------------------------ Collection Functions: ---------------------------*/
 
@@ -347,6 +347,7 @@
     var funcs = _.rest(arguments);
     if (funcs.length == 0) funcs = _.functions(obj);
     _.each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
   };
 
   // Delays a function for the given number of milliseconds, and then calls

From 21e0cbc229f3da0f2b10716be06752465fee7dfc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 7 Dec 2009 00:26:00 -0500
Subject: [PATCH 083/533] simplified the bindAll example

---
 index.html | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/index.html b/index.html
index a881ae043..eacb7016e 100644
--- a/index.html
+++ b/index.html
@@ -646,11 +646,7 @@ var buttonView = {
   onClick : function(){ alert('clicked: ' + this.label); },
   onHover : function(){ console.log('hovering: ' + this.label); }
 };
-
-// In this case, the following two lines have the same effect.
-_.bindAll(buttonView, 'onClick', 'onHover');
-_(buttonView).bindAll();
-
+_.bindAll(buttonView);
 jQuery('#underscore_button').bind('click', buttonView.onClick);
 =&gt; When the button is clicked, this.label will have the correct value...
 </pre>

From 2afcffb30a69d1a6f41f90a9214199f1c45a2516 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 7 Dec 2009 23:36:31 -0500
Subject: [PATCH 084/533] added guards to _.first and _.rest and tests, they
 now work as function parameters to _.map

---
 test/arrays.js |  4 ++++
 underscore.js  | 16 +++++++++-------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 3b0ad20a1..9eb8dac54 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -8,6 +8,8 @@ $(document).ready(function() {
     equals(_.first([1,2,3], 2).join(', '), '1, 2', 'can pass an index to first');
     var result = (function(){ return _.first(arguments); })(4, 3, 2, 1);
     equals(result, 4, 'works on an arguments object.');
+    result = _.map([[1,2,3],[1,2,3]], _.first);
+    equals(result.join(','), '1,1', 'works well with _.map');
   });
 
   test("arrays: rest", function() {
@@ -16,6 +18,8 @@ $(document).ready(function() {
     equals(_.rest(numbers, 2).join(', '), '3, 4', 'rest can take an index');
     var result = (function(){ return _(arguments).tail(); })(1, 2, 3, 4);
     equals(result.join(', '), '2, 3, 4', 'aliased as tail and works on arguments object');
+    result = _.map([[1,2,3],[1,2,3]], _.rest);
+    equals(_.flatten(result).join(','), '2,3,2,3', 'works well with _.map');
   });
 
   test("arrays: last", function() {
diff --git a/underscore.js b/underscore.js
index 5d781fe6f..2f3b025ea 100644
--- a/underscore.js
+++ b/underscore.js
@@ -229,16 +229,18 @@
   /*-------------------------- Array Functions: ------------------------------*/
 
   // Get the first element of an array. Passing "n" will return the first N
-  // values in the array. Aliased as "head".
-  _.first = function(array, n) {
-    return n ? Array.prototype.slice.call(array, 0, n) : array[0];
+  // values in the array. Aliased as "head". The "guard" check allows it to work
+  // with _.map.
+  _.first = function(array, n, guard) {
+    return n && !guard ? Array.prototype.slice.call(array, 0, n) : array[0];
   };
 
   // Returns everything but the first entry of the array. Aliased as "tail".
   // Especially useful on the arguments object. Passing an "index" will return
-  // the rest of the values in the array from that index onward.
-  _.rest = function(array, index) {
-    return Array.prototype.slice.call(array, _.isUndefined(index) ? 1 : index);
+  // the rest of the values in the array from that index onward. The "guard"
+   //check allows it to work with _.map.
+  _.rest = function(array, index, guard) {
+    return Array.prototype.slice.call(array, _.isUndefined(index) || guard ? 1 : index);
   };
 
   // Get the last element of an array.
@@ -270,7 +272,7 @@
   // been sorted, you have the option of using a faster algorithm.
   _.uniq = function(array, isSorted) {
     return _.reduce(array, [], function(memo, el, i) {
-      if (0 == i || (isSorted ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
+      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
       return memo;
     });
   };

From 30329c051bdee2ae771d7b4cb6552a1ea977a4f0 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 7 Dec 2009 23:41:55 -0500
Subject: [PATCH 085/533] dont try to look at the keys of zero-length arrays or
 arguments objects when calling each()

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 2f3b025ea..98d3a8fab 100644
--- a/underscore.js
+++ b/underscore.js
@@ -42,7 +42,7 @@
     try {
       if (obj.forEach) {
         obj.forEach(iterator, context);
-      } else if (obj.length) {
+      } else if (obj.length || obj.length === 0) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
         var keys = _.keys(obj), l = keys.length;

From 0ed4212ec6d9217ce43d8bf566c411f96a052c5c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 8 Dec 2009 00:06:34 -0500
Subject: [PATCH 086/533] adding pervasive safety checks for using Underscore
 functions on objects that jsut happen to have 'map', 'reduce', or 'filter'
 etc. properties that aren't functions.

---
 underscore.js | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/underscore.js b/underscore.js
index 98d3a8fab..51398635d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -42,7 +42,7 @@
     try {
       if (obj.forEach) {
         obj.forEach(iterator, context);
-      } else if (obj.length || obj.length === 0) {
+      } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
         var keys = _.keys(obj), l = keys.length;
@@ -57,7 +57,7 @@
   // Return the results of applying the iterator to each element. Use JavaScript
   // 1.6's version of map, if possible.
   _.map = function(obj, iterator, context) {
-    if (obj && obj.map) return obj.map(iterator, context);
+    if (obj && _.isFunction(obj.map)) return obj.map(iterator, context);
     var results = [];
     _.each(obj, function(value, index, list) {
       results.push(iterator.call(context, value, index, list));
@@ -68,7 +68,7 @@
   // Reduce builds up a single result from a list of values. Also known as
   // inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
   _.reduce = function(obj, memo, iterator, context) {
-    if (obj && obj.reduce) return obj.reduce(_.bind(iterator, context), memo);
+    if (obj && _.isFunction(obj.reduce)) return obj.reduce(_.bind(iterator, context), memo);
     _.each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
@@ -78,7 +78,7 @@
   // The right-associative version of reduce, also known as foldr. Uses
   // JavaScript 1.8's version of reduceRight, if available.
   _.reduceRight = function(obj, memo, iterator, context) {
-    if (obj && obj.reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+    if (obj && _.isFunction(obj.reduceRight)) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
     _.each(reversed, function(value, index) {
       memo = iterator.call(context, memo, value, index, obj);
@@ -101,7 +101,7 @@
   // Return all the elements that pass a truth test. Use JavaScript 1.6's
   // filter(), if it exists.
   _.select = function(obj, iterator, context) {
-    if (obj.filter) return obj.filter(iterator, context);
+    if (obj && _.isFunction(obj.filter)) return obj.filter(iterator, context);
     var results = [];
     _.each(obj, function(value, index, list) {
       iterator.call(context, value, index, list) && results.push(value);
@@ -122,7 +122,7 @@
   // JavaScript 1.6's every(), if it is present.
   _.all = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.every) return obj.every(iterator, context);
+    if (obj && _.isFunction(obj.every)) return obj.every(iterator, context);
     var result = true;
     _.each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
@@ -134,7 +134,7 @@
   // JavaScript 1.6's some(), if it exists.
   _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.some) return obj.some(iterator, context);
+    if (obj && _.isFunction(obj.some)) return obj.some(iterator, context);
     var result = false;
     _.each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) _.breakLoop();

From 8c7fcb7781c89cc2d41c415ff5fbb755bbd4000c Mon Sep 17 00:00:00 2001
From: Noah Sloan <iamnoah+github@gmail.com>
Date: Tue, 8 Dec 2009 14:11:28 -0600
Subject: [PATCH 087/533] cache is string and toString to improve performance

---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 51398635d..b94cc0f9b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -478,8 +478,9 @@
   // Define the isArray, isDate, isFunction, isNumber, isRegExp, and
   // isString functions based on their toString identifiers.
   _.each(['Array', 'Date', 'Function', 'Number', 'RegExp', 'String'], function(type) {
+	var toString = Object.prototype.toString, typeString = '[object ' + type + ']';
     _['is' + type] = function(obj) {
-      return Object.prototype.toString.call(obj) == '[object ' + type + ']';
+      return toString.call(obj) == typeString;
     };
   });
 

From 38cae13d692bd57c23ff31604c433124f8125af9 Mon Sep 17 00:00:00 2001
From: Noah Sloan <iamnoah+github@gmail.com>
Date: Tue, 8 Dec 2009 14:21:05 -0600
Subject: [PATCH 088/533] cache wrapper methods

---
 underscore.js | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index b94cc0f9b..81898d4af 100644
--- a/underscore.js
+++ b/underscore.js
@@ -555,24 +555,28 @@
 
   // Add all of the Underscore functions to the wrapper object.
   _.each(_.functions(_), function(name) {
+    var unshift = Array.prototype.unshift,
+      method = _[name];
     wrapper.prototype[name] = function() {
-      Array.prototype.unshift.call(arguments, this._wrapped);
-      return result(_[name].apply(_, arguments), this._chain);
+      unshift.call(arguments, this._wrapped);
+      return result(method.apply(_, arguments), this._chain);
     };
   });
 
   // Add all mutator Array functions to the wrapper.
   _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = Array.prototype[name];
     wrapper.prototype[name] = function() {
-      Array.prototype[name].apply(this._wrapped, arguments);
+      method.apply(this._wrapped, arguments);
       return result(this._wrapped, this._chain);
     };
   });
 
   // Add all accessor Array functions to the wrapper.
   _.each(['concat', 'join', 'slice'], function(name) {
+    var method = Array.prototype[name];
     wrapper.prototype[name] = function() {
-      return result(Array.prototype[name].apply(this._wrapped, arguments), this._chain);
+      return result(method.apply(this._wrapped, arguments), this._chain);
     };
   });
 

From a5454d6972063a65bfa0611a237663f19e509856 Mon Sep 17 00:00:00 2001
From: Noah Sloan <iamnoah+github@gmail.com>
Date: Tue, 8 Dec 2009 14:24:44 -0600
Subject: [PATCH 089/533] cache hasOwnProperty

---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 81898d4af..da40afaa8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -391,10 +391,11 @@
   /* ------------------------- Object Functions: ---------------------------- */
 
   // Retrieve the names of an object's properties.
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
   _.keys = function(obj) {
     if(_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
-    for (var key in obj) if (Object.prototype.hasOwnProperty.call(obj, key)) keys.push(key);
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
     return keys;
   };
 

From 6554c6d9762d71c056d573fabf0ead967a75b308 Mon Sep 17 00:00:00 2001
From: Noah Sloan <iamnoah+github@gmail.com>
Date: Tue, 8 Dec 2009 15:57:04 -0600
Subject: [PATCH 090/533] have to define isNumber before _.each will work in IE

---
 underscore.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index da40afaa8..834ecac9a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -475,10 +475,15 @@
   _.isUndefined = function(obj) {
     return typeof obj == 'undefined';
   };
+  
+  // have to define isNumber before _.each will work in IE
+  _.isNumber = function(obj) {
+    return Object.prototype.toString == '[object Number]';
+  };
 
-  // Define the isArray, isDate, isFunction, isNumber, isRegExp, and
+  // Define the isArray, isDate, isFunction, isRegExp, and
   // isString functions based on their toString identifiers.
-  _.each(['Array', 'Date', 'Function', 'Number', 'RegExp', 'String'], function(type) {
+  _.each(['Array', 'Date', 'Function', 'RegExp', 'String'], function(type) {
 	var toString = Object.prototype.toString, typeString = '[object ' + type + ']';
     _['is' + type] = function(obj) {
       return toString.call(obj) == typeString;

From 37930f92e0031bb0f5a591827ecef13863f19f9a Mon Sep 17 00:00:00 2001
From: Noah Sloan <iamnoah+github@gmail.com>
Date: Tue, 8 Dec 2009 16:03:53 -0600
Subject: [PATCH 091/533] doh. messed up isNumber fix

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 834ecac9a..017018790 100644
--- a/underscore.js
+++ b/underscore.js
@@ -478,7 +478,7 @@
   
   // have to define isNumber before _.each will work in IE
   _.isNumber = function(obj) {
-    return Object.prototype.toString == '[object Number]';
+    return Object.prototype.toString.call(obj) == '[object Number]';
   };
 
   // Define the isArray, isDate, isFunction, isRegExp, and

From 3eb9c280397f70db24766a26ab072a23f0777c3e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 8 Dec 2009 17:31:01 -0500
Subject: [PATCH 092/533] Underscore shouldn't be able to iterate over the
 letters of a string cross-browser -- indexing into a string isn't supported
 in IE

---
 test/collections.js | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index c0bfe1ee8..47ca9d430 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -15,10 +15,6 @@ $(document).ready(function() {
     _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
 
-    answers = [];
-    _.each("moe", function(letter){ answers.push(letter); });
-    equals(answers.join(', '), 'm, o, e', 'iterates over the letters in strings');
-
     answers = [];
     _.forEach([1, 2, 3], function(num){ answers.push(num); });
     equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');

From 99564138e8c745f71f5842871c0a6ce30b26bde7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 9 Dec 2009 11:17:30 -0500
Subject: [PATCH 093/533] added an extra check in isEqual to test for falsy
 against truthy values (so as to short circuit before trying to look for
 properties on null)

---
 underscore.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/underscore.js b/underscore.js
index 51398635d..da098bc97 100644
--- a/underscore.js
+++ b/underscore.js
@@ -424,6 +424,8 @@
     if (atype != btype) return false;
     // Basic equality test (watch out for coercions).
     if (a == b) return true;
+    // One is falsy and the other truthy.
+    if ((!a && b) || (a && !b)) return false;
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
     // Check dates' integer values.

From 2ba87d6b44f6c302bbb87635a2c5164337d0fcad Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 9 Dec 2009 11:20:09 -0500
Subject: [PATCH 094/533] adding test case for previous commit

---
 test/objects.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/objects.js b/test/objects.js
index 18c4b3c2b..8ba67858e 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -52,6 +52,7 @@ $(document).ready(function() {
     ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
+    ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
   });
 
   test("objects: isEmpty", function() {

From 76cccb6a2dc58b71811e4cc4ce5733a2b11e959f Mon Sep 17 00:00:00 2001
From: Noah Sloan <iamnoah+github@gmail.com>
Date: Wed, 9 Dec 2009 10:00:48 -0600
Subject: [PATCH 095/533] added JSLitmus tests for isType functions

---
 test/speed.js | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/test/speed.js b/test/speed.js
index 86663a237..50fd3dc60 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -5,6 +5,31 @@
   var objects = _.map(numbers, function(n){ return {num : n}; });
   var randomized = _.sortBy(numbers, function(){ return Math.random(); });
 
+  JSLitmus.test('_.isNumber()', function() {
+    _.isNumber(123);
+    _.isNumber(null);
+    _.isNumber(NaN);        
+    _.isNumber(/foo/);    
+    _.isNumber("abc");
+  });
+
+  JSLitmus.test('_.isString()', function() {
+    _.isString(123);
+    _.isString(null);
+    _.isString(NaN);        
+    _.isString(/foo/);
+    _.isString("abc");
+  });  
+
+  JSLitmus.test('_.isDate()', function() {
+    _.isDate(123);
+    _.isDate(null);
+    _.isDate(NaN);        
+    _.isDate(/foo/);
+    _.isDate("abc");
+    _.isDate(new Date());  
+  });  
+
   JSLitmus.test('_.each()', function() {
     var timesTwo = [];
     _.each(numbers, function(num){ timesTwo.push(num * 2); });

From 225d795836d86bdc03518faa656f883e34075f3a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 9 Dec 2009 12:44:55 -0500
Subject: [PATCH 096/533] merging in iamnoah's optimizations for the isType
 family of functions, and other references to core prototoypes

---
 test/speed.js | 25 -------------------------
 underscore.js | 22 ++++++++++++----------
 2 files changed, 12 insertions(+), 35 deletions(-)

diff --git a/test/speed.js b/test/speed.js
index 50fd3dc60..86663a237 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -5,31 +5,6 @@
   var objects = _.map(numbers, function(n){ return {num : n}; });
   var randomized = _.sortBy(numbers, function(){ return Math.random(); });
 
-  JSLitmus.test('_.isNumber()', function() {
-    _.isNumber(123);
-    _.isNumber(null);
-    _.isNumber(NaN);        
-    _.isNumber(/foo/);    
-    _.isNumber("abc");
-  });
-
-  JSLitmus.test('_.isString()', function() {
-    _.isString(123);
-    _.isString(null);
-    _.isString(NaN);        
-    _.isString(/foo/);
-    _.isString("abc");
-  });  
-
-  JSLitmus.test('_.isDate()', function() {
-    _.isDate(123);
-    _.isDate(null);
-    _.isDate(NaN);        
-    _.isDate(/foo/);
-    _.isDate("abc");
-    _.isDate(new Date());  
-  });  
-
   JSLitmus.test('_.each()', function() {
     var timesTwo = [];
     _.each(numbers, function(num){ timesTwo.push(num * 2); });
diff --git a/underscore.js b/underscore.js
index 46df7455e..7ae664386 100644
--- a/underscore.js
+++ b/underscore.js
@@ -30,6 +30,9 @@
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
+  // Create quick reference variables for speed access to Object.prototype.
+  var toString = Object.prototype.toString, hasOwnProperty = Object.prototype.hasOwnProperty;
+
   // Current version.
   _.VERSION = '0.5.0';
 
@@ -391,7 +394,6 @@
   /* ------------------------- Object Functions: ---------------------------- */
 
   // Retrieve the names of an object's properties.
-  var hasOwnProperty = Object.prototype.hasOwnProperty;
   _.keys = function(obj) {
     if(_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
@@ -477,18 +479,19 @@
   _.isUndefined = function(obj) {
     return typeof obj == 'undefined';
   };
-  
-  // have to define isNumber before _.each will work in IE
+
+  // isNumber needs to be defined before the rest of the isType functions,
+  // because _.each uses it in IE (and we want to use _.each for the closure).
   _.isNumber = function(obj) {
-    return Object.prototype.toString.call(obj) == '[object Number]';
+    return toString.call(obj) == '[object Number]';
   };
 
-  // Define the isArray, isDate, isFunction, isRegExp, and
-  // isString functions based on their toString identifiers.
+  // Define the isArray, isDate, isFunction, isRegExp, and isString functions
+  // based on their toString identifiers.
   _.each(['Array', 'Date', 'Function', 'RegExp', 'String'], function(type) {
-	var toString = Object.prototype.toString, typeString = '[object ' + type + ']';
+    var identifier = '[object ' + type + ']';
     _['is' + type] = function(obj) {
-      return toString.call(obj) == typeString;
+      return toString.call(obj) == identifier;
     };
   });
 
@@ -563,8 +566,7 @@
 
   // Add all of the Underscore functions to the wrapper object.
   _.each(_.functions(_), function(name) {
-    var unshift = Array.prototype.unshift,
-      method = _[name];
+    var method = _[name], unshift = Array.prototype.unshift;
     wrapper.prototype[name] = function() {
       unshift.call(arguments, this._wrapped);
       return result(method.apply(_, arguments), this._chain);

From 5c314d206e2539d78b6e843e58e064e69145bad1 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 9 Dec 2009 13:41:19 -0500
Subject: [PATCH 097/533] adding an isArguments checker and enabling iteration
 (using each) over JS object hashes that have numeric length properties

---
 index.html          | 12 ++++++++++++
 test/collections.js |  4 ++++
 test/objects.js     |  9 ++++++++-
 underscore.js       | 38 ++++++++++++++++++++++++--------------
 4 files changed, 48 insertions(+), 15 deletions(-)

diff --git a/index.html b/index.html
index eacb7016e..2eb2dbc31 100644
--- a/index.html
+++ b/index.html
@@ -813,6 +813,18 @@ _.isElement(jQuery('body')[0]);
 =&gt; false
 _.isArray([1,2,3]);
 =&gt; true
+</pre>
+
+      <p id="isArguments">
+        <b class="header">isArguments</b><code>_.isArguments(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is an Arguments object.
+      </p>
+      <pre>
+(function(){ return _.isArguments(arguments); })(1, 2, 3);
+=&gt; true
+_.isArguments([1,2,3]);
+=&gt; false
 </pre>
 
       <p id="isFunction">
diff --git a/test/collections.js b/test/collections.js
index 47ca9d430..935edcb95 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -29,6 +29,10 @@ $(document).ready(function() {
     answer = null;
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
     ok(answer, 'can reference the original collection from inside the iterator');
+
+    answers = [];
+    _.each({range : 1, speed : 2, length : 3}, function(v){ answers.push(v); });
+    ok(answers.join(', '), '1, 2, 3', 'can iterate over objects with numeric length properties');
   });
 
   test('collections: map', function() {
diff --git a/test/objects.js b/test/objects.js
index 8ba67858e..cd45c0bc6 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -14,7 +14,7 @@ $(document).ready(function() {
     var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
-    "indexOf", "inject", "intersect", "invoke", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
+    "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
@@ -71,6 +71,13 @@ $(document).ready(function() {
     ok(_.isElement($('html')[0]), 'the html tag is a DOM element');
   });
 
+  test("objects: isArguments", function() {
+    var args = (function(){ return arguments; })(1, 2, 3);
+    ok(_.isArguments(args), 'the arguments object is an arguments object');
+    ok(!_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
+    ok(!_.isArguments([1,2,3]), 'and not vanilla arrays.');
+  });
+
   test("objects: isArray", function() {
     ok(!_.isArray(arguments), 'the arguments object is not an array');
     ok(_.isArray([1, 2, 3]), 'but arrays are');
diff --git a/underscore.js b/underscore.js
index 7ae664386..810531f72 100644
--- a/underscore.js
+++ b/underscore.js
@@ -30,8 +30,12 @@
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
-  // Create quick reference variables for speed access to Object.prototype.
-  var toString = Object.prototype.toString, hasOwnProperty = Object.prototype.hasOwnProperty;
+  // Create quick reference variables for speed access to core prototypes.
+  var slice                 = Array.prototype.slice,
+      unshift               = Array.prototype.unshift,
+      toString              = Object.prototype.toString,
+      hasOwnProperty        = Object.prototype.hasOwnProperty,
+      propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
   _.VERSION = '0.5.0';
@@ -45,7 +49,7 @@
     try {
       if (obj.forEach) {
         obj.forEach(iterator, context);
-      } else if (_.isNumber(obj.length)) {
+      } else if (_.isArray(obj) || _.isArguments(obj)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
         var keys = _.keys(obj), l = keys.length;
@@ -218,9 +222,10 @@
 
   // Convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
-    if (!iterable)           return [];
-    if (iterable.toArray)    return iterable.toArray();
-    if (_.isArray(iterable)) return iterable;
+    if (!iterable)                return [];
+    if (iterable.toArray)         return iterable.toArray();
+    if (_.isArray(iterable))      return iterable;
+    if (_.isArguments(iterable))  return slice.call(iterable);
     return _.map(iterable, function(val){ return val; });
   };
 
@@ -235,7 +240,7 @@
   // values in the array. Aliased as "head". The "guard" check allows it to work
   // with _.map.
   _.first = function(array, n, guard) {
-    return n && !guard ? Array.prototype.slice.call(array, 0, n) : array[0];
+    return n && !guard ? slice.call(array, 0, n) : array[0];
   };
 
   // Returns everything but the first entry of the array. Aliased as "tail".
@@ -243,7 +248,7 @@
   // the rest of the values in the array from that index onward. The "guard"
    //check allows it to work with _.map.
   _.rest = function(array, index, guard) {
-    return Array.prototype.slice.call(array, _.isUndefined(index) || guard ? 1 : index);
+    return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
   };
 
   // Get the last element of an array.
@@ -406,6 +411,11 @@
     return _.map(obj, _.identity);
   };
 
+  // Return a sorted list of the function names available in Underscore.
+  _.functions = function(obj) {
+    return _.select(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
+  };
+
   // Extend a given object with all of the properties in a source object.
   _.extend = function(destination, source) {
     for (var property in source) destination[property] = source[property];
@@ -464,6 +474,11 @@
     return !!(obj && obj.nodeType == 1);
   };
 
+  // Is a given variable an arguments object?
+  _.isArguments = function(obj) {
+    return obj && _.isNumber(obj.length) && !_.isArray(obj) && !propertyIsEnumerable.call(obj, 'length');
+  };
+
   // Is the given value NaN -- this one is interesting. NaN != NaN, and
   // isNaN(undefined) == true, so we make sure it's a number first.
   _.isNaN = function(obj) {
@@ -522,11 +537,6 @@
     return prefix ? prefix + id : id;
   };
 
-  // Return a sorted list of the function names available in Underscore.
-  _.functions = function(obj) {
-    return _.select(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
-  };
-
   // JavaScript templating a-la ERB, pilfered from John Resig's
   // "Secrets of the JavaScript Ninja", page 83.
   _.template = function(str, data) {
@@ -566,7 +576,7 @@
 
   // Add all of the Underscore functions to the wrapper object.
   _.each(_.functions(_), function(name) {
-    var method = _[name], unshift = Array.prototype.unshift;
+    var method = _[name];
     wrapper.prototype[name] = function() {
       unshift.call(arguments, this._wrapped);
       return result(method.apply(_, arguments), this._chain);

From 4042a38dc68f4263664906aaf1ba41c99cc28a57 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 9 Dec 2009 14:22:05 -0500
Subject: [PATCH 098/533] Underscore 0.5.1

---
 index.html        | 17 ++++++++++++-----
 underscore-min.js | 31 ++++++++++++++++---------------
 underscore.js     |  2 +-
 3 files changed, 29 insertions(+), 21 deletions(-)

diff --git a/index.html b/index.html
index 2eb2dbc31..eb23527c1 100644
--- a/index.html
+++ b/index.html
@@ -111,12 +111,12 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.0)</a></td>
-          <td><i>20kb, Uncompressed with Comments</i></td>
+          <td><a href="underscore.js">Development Version (0.5.1)</a></td>
+          <td><i>21kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.0)</a></td>
-          <td><i>2kb, Packed and Gzipped</i></td>
+          <td><a href="underscore-min.js">Production Version (0.5.1)</a></td>
+          <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
     </p>
@@ -206,7 +206,7 @@ _(lyrics).chain()
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
       <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#clone">clone</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
-      <a href="#isArray">isArray</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
+      <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
       <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
       <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>, 
       <a href="#isUndefined">isUndefined</a>
@@ -1049,6 +1049,13 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.1</b><br />
+        Added an <tt>_.isArguments</tt> function. Lots of little safety checks
+        and optimizations contributed by 
+        <a href="http://github.com/iamnoah/">Noah Sloan</a> and Andri Möll.
+      </p>
+      
       <p>
         <b class="header">0.5.0</b><br />
         <b>[API Changes]</b> <tt>_.bindAll</tt> now takes the context object as 
diff --git a/underscore-min.js b/underscore-min.js
index 4df2f6843..573c6042c 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,15 +1,16 @@
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+if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==0};b.isElement=
+function(a){return!!(a&&a.nodeType==1)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.isNumber=function(a){return n.call(a)=="[object Number]"};b.each(["Array","Date","Function","RegExp","String"],function(a){var c="[object "+a+"]";b["is"+a]=function(d){return n.call(d)==c}});b.noConflict=function(){j._=
+o;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=
+b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){p.call(arguments,this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);
+return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 810531f72..d14f50a75 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.0';
+  _.VERSION = '0.5.1';
 
   /*------------------------ Collection Functions: ---------------------------*/
 

From a418153800891ab7521f0559e995e0dbac6f2c9a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 9 Dec 2009 14:36:19 -0500
Subject: [PATCH 099/533] quick fix for 0.5.1 for IE -- need to define
 functions in the right order

---
 underscore-min.js | 18 +++++++++---------
 underscore.js     | 23 +++++++++--------------
 2 files changed, 18 insertions(+), 23 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 573c6042c..4360e355a 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,16 +1,16 @@
-(function(){var j=this,o=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,p=Array.prototype.unshift,n=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.1";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
-a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
+(function(){var j=this,p=j._,i=function(a){this._wrapped=a},o=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var l=Array.prototype.slice,q=Array.prototype.unshift,r=Object.prototype.toString,s=Object.prototype.hasOwnProperty,t=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.1";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
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-function(a){return!!(a&&a.nodeType==1)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.isNumber=function(a){return n.call(a)=="[object Number]"};b.each(["Array","Date","Function","RegExp","String"],function(a){var c="[object "+a+"]";b["is"+a]=function(d){return n.call(d)==c}});b.noConflict=function(){j._=
-o;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=
-b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){p.call(arguments,this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);
-return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+function(a){return!!(a&&a.nodeType==1)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!t.call(a,"length")};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};for(var m=["Array","Date","Function","Number","RegExp","String"],k=0,u=m.length;k<u;k++)(function(){var a="[object "+m[k]+"]";b["is"+m[k]]=function(c){return r.call(c)==a}})();b.noConflict=function(){j._=p;return this};b.identity=
+function(a){return a};b.breakLoop=function(){throw o;};var v=0;b.uniqueId=function(a){var c=v++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=
+b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var n=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){q.call(arguments,this._wrapped);return n(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return n(this._wrapped,
+this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return n(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index d14f50a75..047f01c59 100644
--- a/underscore.js
+++ b/underscore.js
@@ -495,20 +495,15 @@
     return typeof obj == 'undefined';
   };
 
-  // isNumber needs to be defined before the rest of the isType functions,
-  // because _.each uses it in IE (and we want to use _.each for the closure).
-  _.isNumber = function(obj) {
-    return toString.call(obj) == '[object Number]';
-  };
-
-  // Define the isArray, isDate, isFunction, isRegExp, and isString functions
-  // based on their toString identifiers.
-  _.each(['Array', 'Date', 'Function', 'RegExp', 'String'], function(type) {
-    var identifier = '[object ' + type + ']';
-    _['is' + type] = function(obj) {
-      return toString.call(obj) == identifier;
-    };
-  });
+  // Define the isArray, isDate, isFunction, isNumber, isRegExp, and isString
+  // functions based on their toString identifiers.
+  var types = ['Array', 'Date', 'Function', 'Number', 'RegExp', 'String'];
+  for (var i=0, l=types.length; i<l; i++) {
+    (function() {
+      var identifier = '[object ' + types[i] + ']';
+      _['is' + types[i]] = function(obj) { return toString.call(obj) == identifier; };
+    })();
+  }
 
   /* -------------------------- Utility Functions: -------------------------- */
 

From c17879453a300f65142e6fcdfbeccd0f606bb890 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 10 Dec 2009 14:14:48 -0500
Subject: [PATCH 100/533] utf8 meta tag

---
 index.html | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.html b/index.html
index eb23527c1..894ec25d7 100644
--- a/index.html
+++ b/index.html
@@ -1,6 +1,8 @@
 <!DOCTYPE HTML>
 <html>
 <head>
+  <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
+  <meta http-equiv="X-UA-Compatible" content="chrome=1">
   <title>Underscore.js</title>
   <style>
     body {

From d49196f2e780800faaa85762116cdbb180d7c998 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 11 Dec 2009 09:25:20 -0500
Subject: [PATCH 101/533] pulling Evgeniy Dolzhenko's patch to add _.tap, with
 tests

---
 index.html      | 18 +++++++++++++++++-
 test/objects.js | 16 +++++++++++++++-
 underscore.js   |  7 +++++++
 3 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 894ec25d7..b7a368b34 100644
--- a/index.html
+++ b/index.html
@@ -206,7 +206,7 @@ _(lyrics).chain()
       <b>Objects</b>
       <br />
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
-      <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#clone">clone</a>,
+      <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#clone">clone</a>, <a href="#tap">tap</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
       <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
@@ -766,6 +766,22 @@ _.extend({name : 'moe'}, {age : 50});
       <pre>
 _.clone({name : 'moe'});
 =&gt; {name : 'moe'};
+</pre>
+
+      <p id="tap">
+        <b class="header">tap</b><code>_.tap(object, interceptor)</code>
+        <br />
+        Invokes <b>interceptor</b> with the <b>object</b>, and then returns <b>object</b>. 
+        The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
+      </p>
+      <pre>
+_([1,2,3,200]).chain().
+  select(function(num) { return num % 2 == 0; }).
+  tap(console.log).
+  map(function(num) { return num * num }).
+  value();
+=&gt; [2, 200]
+=&gt; [4, 40000]
 </pre>
 
       <p id="isEqual">
diff --git a/test/objects.js b/test/objects.js
index cd45c0bc6..b8affa46e 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -17,7 +17,7 @@ $(document).ready(function() {
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
-    "size", "some", "sortBy", "sortedIndex", "tail", "template", "toArray", "uniq",
+    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods(_)), 'provides a sorted list of functions');
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
@@ -131,4 +131,18 @@ $(document).ready(function() {
     ok(_.isUndefined(undefined), 'undefined is undefined');
   });
 
+  test("objects: tap", function() {
+    var intercepted = null;
+    var interceptor = function(obj) { intercepted = obj; };
+    var returned = _.tap(1, interceptor);
+    equals(intercepted, 1, "passes tapped object to interceptor");
+    equals(returned, 1, "returns tapped object");
+
+    returned = _([1,2,3]).chain().
+      map(function(n){ return n * 2; }).
+      max().
+      tap(interceptor).
+      value();
+    ok(returned == 6 && intercepted == 6, 'can use tapped objects in a chain');
+  });
 });
diff --git a/underscore.js b/underscore.js
index 047f01c59..8a6d9e0c5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -495,6 +495,13 @@
     return typeof obj == 'undefined';
   };
 
+  // Invokes interceptor with the obj, and then returns obj. 
+  // The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  }
+
   // Define the isArray, isDate, isFunction, isNumber, isRegExp, and isString
   // functions based on their toString identifiers.
   var types = ['Array', 'Date', 'Function', 'Number', 'RegExp', 'String'];

From 4be6a194cdc039c7a1cbcef8812027289f997b20 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 1 Jan 2010 19:05:34 -0500
Subject: [PATCH 102/533] replacing all isType tests that relied on string
 comparisons with versions that check for existence of known methods and
 properties. Less safe, but more than an order of magnitude faster.

---
 test/temp.js         | 25 ++++++++++++++++++++
 test/temp_tests.html | 19 ++++++++++++++++
 underscore.js        | 54 ++++++++++++++++++++++++++++++--------------
 3 files changed, 81 insertions(+), 17 deletions(-)
 create mode 100644 test/temp.js
 create mode 100644 test/temp_tests.html

diff --git a/test/temp.js b/test/temp.js
new file mode 100644
index 000000000..657807239
--- /dev/null
+++ b/test/temp.js
@@ -0,0 +1,25 @@
+(function() {
+
+  var func = function(){};
+  var date = new Date();
+  var str = "a string";
+  var numbers = [];
+  for (var i=0; i<1000; i++) numbers.push(i);
+  var objects = _.map(numbers, function(n){ return {num : n}; });
+  var randomized = _.sortBy(numbers, function(){ return Math.random(); });
+
+  JSLitmus.test('_.each()', function() {
+    var timesTwo = [];
+    _.each(numbers, function(num){ timesTwo.push(num * 2); });
+    return timesTwo;
+  });
+
+  JSLitmus.test('_.isString', function() {
+    return _.isString(str);
+  });
+
+  JSLitmus.test('_.isStringNew', function() {
+    return _.isStringNew(str);
+  });
+
+})();
\ No newline at end of file
diff --git a/test/temp_tests.html b/test/temp_tests.html
new file mode 100644
index 000000000..bd34f9dd7
--- /dev/null
+++ b/test/temp_tests.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Underscore Temporary Tests</title>
+  <link rel="stylesheet" href="vendor/qunit.css" type="text/css" media="screen" />
+  <script type="text/javascript" src="vendor/jquery.js"></script>
+  <script type="text/javascript" src="vendor/jslitmus.js"></script>
+  <script type="text/javascript" src="../underscore.js"></script>
+  <script type="text/javascript" src="temp.js"></script>
+</head>
+<body>
+  <h1 class="qunit-header">Underscore Temporary Tests</h1>
+  <h2 class="qunit-userAgent">
+    A page for temporary speed tests, used for developing faster implementations
+    of existing Underscore methods.
+  </h2>
+  <br />
+</body>
+</html>
diff --git a/underscore.js b/underscore.js
index 8a6d9e0c5..d986c6543 100644
--- a/underscore.js
+++ b/underscore.js
@@ -428,6 +428,13 @@
     return _.extend({}, obj);
   };
 
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
     // Check object identity.
@@ -474,11 +481,41 @@
     return !!(obj && obj.nodeType == 1);
   };
 
+  // Is a given value an array?
+  _.isArray = function(obj) {
+    return obj && obj.concat && obj.unshift;
+  };
+
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
     return obj && _.isNumber(obj.length) && !_.isArray(obj) && !propertyIsEnumerable.call(obj, 'length');
   };
 
+  // Is a given value a function?
+  _.isFunction = function(obj) {
+    return obj && obj.constructor && obj.call && obj.apply;
+  };
+
+  // Is a given value a string?
+  _.isString = function(obj) {
+    return obj === '' || (obj && obj.charCodeAt && obj.substr);
+  };
+
+  // Is a given value a number?
+  _.isNumber = function(obj) {
+    return toString.call(obj) === '[object Number]';
+  };
+
+  // Is a given value a date?
+  _.isDate = function(obj) {
+    return obj && obj.getTimezoneOffset && obj.setUTCFullYear;
+  };
+
+  // Is the given value a regular expression?
+  _.isRegExp = function(obj) {
+    return obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false);
+  };
+
   // Is the given value NaN -- this one is interesting. NaN != NaN, and
   // isNaN(undefined) == true, so we make sure it's a number first.
   _.isNaN = function(obj) {
@@ -495,23 +532,6 @@
     return typeof obj == 'undefined';
   };
 
-  // Invokes interceptor with the obj, and then returns obj. 
-  // The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
-  _.tap = function(obj, interceptor) {
-    interceptor(obj);
-    return obj;
-  }
-
-  // Define the isArray, isDate, isFunction, isNumber, isRegExp, and isString
-  // functions based on their toString identifiers.
-  var types = ['Array', 'Date', 'Function', 'Number', 'RegExp', 'String'];
-  for (var i=0, l=types.length; i<l; i++) {
-    (function() {
-      var identifier = '[object ' + types[i] + ']';
-      _['is' + types[i]] = function(obj) { return toString.call(obj) == identifier; };
-    })();
-  }
-
   /* -------------------------- Utility Functions: -------------------------- */
 
   // Run Underscore.js in noConflict mode, returning the '_' variable to its

From 385404b685145f2b02be8e81f8e46b654275edca Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 1 Jan 2010 21:32:44 -0500
Subject: [PATCH 103/533] Underscore 0.5.2

---
 index.html        | 20 ++++++++++++++++++--
 underscore-min.js | 21 +++++++++++----------
 underscore.js     | 18 +++++++++---------
 3 files changed, 38 insertions(+), 21 deletions(-)

diff --git a/index.html b/index.html
index b7a368b34..5df3e296d 100644
--- a/index.html
+++ b/index.html
@@ -113,11 +113,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.1)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.2)</a></td>
           <td><i>21kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.1)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.2)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1067,6 +1067,22 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.2</b><br />
+        New implementations of <tt>isArray</tt>, <tt>isDate</tt>, <tt>isFunction</tt>, 
+        <tt>isNumber</tt>, <tt>isRegExp</tt>, and <tt>isString</tt>, thanks to 
+        a suggestion from 
+        <a href="http://www.broofa.com/">Robert Kieffer</a>. 
+        Instead of doing <tt>Object#toString</tt>
+        comparisons, they now check for expected properties, which is less safe, 
+        but more than an order of magnitude faster. Most other Underscore 
+        functions saw minor speed improvements as a result. 
+        <a href="http://dolzhenko.org/">Evgeniy Dolzhenko</a>
+        contributed <tt>_.tap</tt>, 
+        <a href="http://ruby-doc.org/core-1.9/classes/Object.html#M000191">similar to Ruby 1.9's</a>, 
+        which is handy for injecting side effects (like logging) into chained calls.
+      </p>
+      
       <p>
         <b class="header">0.5.1</b><br />
         Added an <tt>_.isArguments</tt> function. Lots of little safety checks
diff --git a/underscore-min.js b/underscore-min.js
index 4360e355a..ad147a93b 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,16 +1,17 @@
-(function(){var j=this,p=j._,i=function(a){this._wrapped=a},o=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var l=Array.prototype.slice,q=Array.prototype.unshift,r=Object.prototype.toString,s=Object.prototype.hasOwnProperty,t=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.1";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
-a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=o)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.2";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
+a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
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-if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==0};b.isElement=
-function(a){return!!(a&&a.nodeType==1)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!t.call(a,"length")};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};for(var m=["Array","Date","Function","Number","RegExp","String"],k=0,u=m.length;k<u;k++)(function(){var a="[object "+m[k]+"]";b["is"+m[k]]=function(c){return r.call(c)==a}})();b.noConflict=function(){j._=p;return this};b.identity=
-function(a){return a};b.breakLoop=function(){throw o;};var v=0;b.uniqueId=function(a){var c=v++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=
-b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var n=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){q.call(arguments,this._wrapped);return n(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return n(this._wrapped,
-this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return n(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+a.length);var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.select(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||
+a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=
+function(a){return b.keys(a).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return a&&a.concat&&a.unshift};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return a&&a.constructor&&a.call&&a.apply};b.isString=function(a){return a===""||a&&a.charCodeAt&&a.substr};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return a&&a.getTimezoneOffset&&a.setUTCFullYear};
+b.isRegExp=function(a){return a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false)};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+
+a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=
+function(){o.call(arguments,this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};
+i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index d986c6543..b51395cdb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -8,7 +8,7 @@
 
 (function() {
 
-  /*------------------------- Baseline setup ---------------------------------*/
+  // ------------------------- Baseline setup ---------------------------------
 
   // Establish the root object, "window" in the browser, or "global" on the server.
   var root = this;
@@ -38,9 +38,9 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.1';
+  _.VERSION = '0.5.2';
 
-  /*------------------------ Collection Functions: ---------------------------*/
+  // ------------------------ Collection Functions: ---------------------------
 
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
@@ -234,7 +234,7 @@
     return _.toArray(obj).length;
   };
 
-  /*-------------------------- Array Functions: ------------------------------*/
+  // -------------------------- Array Functions: ------------------------------
 
   // Get the first element of an array. Passing "n" will return the first N
   // values in the array. Aliased as "head". The "guard" check allows it to work
@@ -340,7 +340,7 @@
     }
   };
 
-  /* ----------------------- Function Functions: -----------------------------*/
+  // ----------------------- Function Functions: ------------------------------
 
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
@@ -396,7 +396,7 @@
     };
   };
 
-  /* ------------------------- Object Functions: ---------------------------- */
+  // ------------------------- Object Functions: ------------------------------
 
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
@@ -532,7 +532,7 @@
     return typeof obj == 'undefined';
   };
 
-  /* -------------------------- Utility Functions: -------------------------- */
+  // -------------------------- Utility Functions: ----------------------------
 
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
@@ -577,7 +577,7 @@
     return data ? fn(data) : fn;
   };
 
-  /*------------------------------- Aliases ----------------------------------*/
+  // ------------------------------- Aliases ----------------------------------
 
   _.forEach  = _.each;
   _.foldl    = _.inject       = _.reduce;
@@ -589,7 +589,7 @@
   _.tail     = _.rest;
   _.methods  = _.functions;
 
-  /*------------------------ Setup the OOP Wrapper: --------------------------*/
+  // ------------------------ Setup the OOP Wrapper: --------------------------
 
   // Helper function to continue chaining intermediate results.
   var result = function(obj, chain) {

From 6427ac58134555da4bcee24290f4e391ebcfebbd Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 1 Jan 2010 21:36:01 -0500
Subject: [PATCH 104/533] 22k now in dev mode

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 5df3e296d..83eb64802 100644
--- a/index.html
+++ b/index.html
@@ -114,7 +114,7 @@
       <table>
         <tr>
           <td><a href="underscore.js">Development Version (0.5.2)</a></td>
-          <td><i>21kb, Uncompressed with Comments</i></td>
+          <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
           <td><a href="underscore-min.js">Production Version (0.5.2)</a></td>

From abb0f7f19461cc942262784e5a14c9e6c548f1f4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 3 Jan 2010 22:05:10 -0500
Subject: [PATCH 105/533] _.toArray is just _.values for objects

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index b51395cdb..31b07a4de 100644
--- a/underscore.js
+++ b/underscore.js
@@ -226,7 +226,7 @@
     if (iterable.toArray)         return iterable.toArray();
     if (_.isArray(iterable))      return iterable;
     if (_.isArguments(iterable))  return slice.call(iterable);
-    return _.map(iterable, function(val){ return val; });
+    return _.values(iterable);
   };
 
   // Return the number of elements in an object.

From 75a31fffc59af2ad1ab682a63e2aed9669218ac4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 4 Jan 2010 10:20:46 -0500
Subject: [PATCH 106/533] adding boolean coercions to the faster isType methods

---
 underscore.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index 31b07a4de..8d9748936 100644
--- a/underscore.js
+++ b/underscore.js
@@ -483,7 +483,7 @@
 
   // Is a given value an array?
   _.isArray = function(obj) {
-    return obj && obj.concat && obj.unshift;
+    return !!(obj && obj.concat && obj.unshift);
   };
 
   // Is a given variable an arguments object?
@@ -493,12 +493,12 @@
 
   // Is a given value a function?
   _.isFunction = function(obj) {
-    return obj && obj.constructor && obj.call && obj.apply;
+    return !!(obj && obj.constructor && obj.call && obj.apply);
   };
 
   // Is a given value a string?
   _.isString = function(obj) {
-    return obj === '' || (obj && obj.charCodeAt && obj.substr);
+    return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
   };
 
   // Is a given value a number?
@@ -508,12 +508,12 @@
 
   // Is a given value a date?
   _.isDate = function(obj) {
-    return obj && obj.getTimezoneOffset && obj.setUTCFullYear;
+    return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
   };
 
   // Is the given value a regular expression?
   _.isRegExp = function(obj) {
-    return obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false);
+    return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
   };
 
   // Is the given value NaN -- this one is interesting. NaN != NaN, and

From fde8b1f63f4d1a4365ff968a76c19b22edafb591 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 4 Jan 2010 11:34:26 -0500
Subject: [PATCH 107/533] Underscore 0.5.3

---
 index.html        |  4 ++--
 underscore-min.js | 25 ++++++++++++-------------
 underscore.js     |  2 +-
 3 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/index.html b/index.html
index 83eb64802..cc8795244 100644
--- a/index.html
+++ b/index.html
@@ -113,11 +113,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.2)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.3)</a></td>
           <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.2)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.3)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
diff --git a/underscore-min.js b/underscore-min.js
index ad147a93b..36b49b522 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,17 +1,16 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.2";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.3";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
 a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
 var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
 d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=
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-function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return k.call(a);return b.map(a,function(c){return c})};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,
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-function(a){return b.keys(a).length==0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return a&&a.concat&&a.unshift};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return a&&a.constructor&&a.call&&a.apply};b.isString=function(a){return a===""||a&&a.charCodeAt&&a.substr};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return a&&a.getTimezoneOffset&&a.setUTCFullYear};
-b.isRegExp=function(a){return a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false)};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+
-a.replace(/[\r\t\n]/g," ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=
-function(){o.call(arguments,this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};
-i.prototype.value=function(){return this._wrapped}})();
+function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return k.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?k.call(a,
+0,c):a[0]};b.rest=function(a,c,d){return k.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,
+e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=
+a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;1;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);b.each(c,function(d){a[d]=b.bind(a[d],a)});
+return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=function(a){if(b.isArray(a))return b.range(0,a.length);
+var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.select(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;
+if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
+0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&
+a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g,
+" ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){o.call(arguments,
+this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 8d9748936..00cba4746 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.2';
+  _.VERSION = '0.5.3';
 
   // ------------------------ Collection Functions: ---------------------------
 

From 0a8a4834b2690a3ae758eb345557af4ed37ec715 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Jan 2010 11:26:14 -0500
Subject: [PATCH 108/533] Underscore 0.5.4 -- bugfix for single quotes in
 _.template strings

---
 index.html        | 11 +++++++++--
 underscore-min.js |  4 ++--
 underscore.js     | 20 ++++++++++----------
 3 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/index.html b/index.html
index cc8795244..e2f483136 100644
--- a/index.html
+++ b/index.html
@@ -113,11 +113,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.3)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.4)</a></td>
           <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.3)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.4)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1067,6 +1067,13 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.4</b><br />
+        Fix for multiple single quotes within a template string for 
+        <tt>_.template</tt>. See: 
+        <a href="http://www.west-wind.com/Weblog/posts/509108.aspx">Rick Strahl's blog post</a>.
+      </p>
+      
       <p>
         <b class="header">0.5.2</b><br />
         New implementations of <tt>isArray</tt>, <tt>isDate</tt>, <tt>isFunction</tt>, 
diff --git a/underscore-min.js b/underscore-min.js
index 36b49b522..e97a8b7d9 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,4 +1,4 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.3";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.4";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
 a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
 var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
 d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=
@@ -12,5 +12,5 @@ var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){re
 if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
 0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&
 a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g,
-" ").split("<%").join("\t").replace(/((^|%>)[^\t]*)'/g,"$1\r").replace(/\t=(.*?)%>/g,"',$1,'").split("\t").join("');").split("%>").join("p.push('").split("\r").join("\\'")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){o.call(arguments,
+" ").replace(/'(?=[^%]*%>)/g,"\t").split("'").join("\\'").split("\t").join("'").replace(/<%=(.+?)%>/g,"',$1,'").split("<%").join("');").split("%>").join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){o.call(arguments,
 this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 00cba4746..a29fdc4e0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.3';
+  _.VERSION = '0.5.4';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -561,19 +561,19 @@
 
   // JavaScript templating a-la ERB, pilfered from John Resig's
   // "Secrets of the JavaScript Ninja", page 83.
+  // Single-quote fix from Rick Strahl's version.
   _.template = function(str, data) {
     var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
-      str
-        .replace(/[\r\t\n]/g, " ")
-        .split("<%").join("\t")
-        .replace(/((^|%>)[^\t]*)'/g, "$1\r")
-        .replace(/\t=(.*?)%>/g, "',$1,'")
-        .split("\t").join("');")
-        .split("%>").join("p.push('")
-        .split("\r").join("\\'")
-    + "');}return p.join('');");
+      str.replace(/[\r\t\n]/g, " ")
+         .replace(/'(?=[^%]*%>)/g,"\t")
+         .split("'").join("\\'")
+         .split("\t").join("'")
+         .replace(/<%=(.+?)%>/g, "',$1,'")
+         .split("<%").join("');")
+         .split("%>").join("p.push('")
+         + "');}return p.join('');");
     return data ? fn(data) : fn;
   };
 

From 6866ffb8400f0cbfab6fc487783ba73dba29e0d1 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Jan 2010 11:28:29 -0500
Subject: [PATCH 109/533] adding a test for single quotes in templates

---
 test/utility.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/utility.js b/test/utility.js
index 92bac6b2f..7b1357dcf 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -34,9 +34,13 @@ $(document).ready(function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
     equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
+
     var fancyTemplate = _.template("<ul><% for (key in people) { %><li><%= people[key] %></li><% } %></ul>");
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+
+    var quoteTemplate = _.template("It's its, not it's");
+    equals(quoteTemplate({}), "It's its, not it's");
   });
 
 });

From cda9099a210e27c49b367b3839bef76e49d6b386 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 9 Jan 2010 19:34:32 -0500
Subject: [PATCH 110/533] Underscore 0.5.5, with a fix for OOP-wrapping in
 MobileSafari, thanks to terrcin.

---
 index.html        | 9 +++++++--
 underscore-min.js | 6 +++---
 underscore.js     | 7 ++++---
 3 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/index.html b/index.html
index e2f483136..34378d703 100644
--- a/index.html
+++ b/index.html
@@ -113,11 +113,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.4)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.5)</a></td>
           <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.4)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.5)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1067,6 +1067,11 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.5</b><br />
+        Fix for a bug in MobileSafari's OOP-wrapper, with the arguments object.
+      </p>
+      
       <p>
         <b class="header">0.5.4</b><br />
         Fix for multiple single quotes within a template string for 
diff --git a/underscore-min.js b/underscore-min.js
index e97a8b7d9..9146e0860 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,4 +1,4 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.4";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.5";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
 a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
 var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
 d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=
@@ -12,5 +12,5 @@ var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){re
 if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
 0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&
 a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g,
-" ").replace(/'(?=[^%]*%>)/g,"\t").split("'").join("\\'").split("\t").join("'").replace(/<%=(.+?)%>/g,"',$1,'").split("<%").join("');").split("%>").join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){o.call(arguments,
-this._wrapped);return l(c.apply(b,arguments),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+" ").replace(/'(?=[^%]*%>)/g,"\t").split("'").join("\\'").split("\t").join("'").replace(/<%=(.+?)%>/g,"',$1,'").split("<%").join("');").split("%>").join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);
+o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index a29fdc4e0..4385967c6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.4';
+  _.VERSION = '0.5.5';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -600,8 +600,9 @@
   _.each(_.functions(_), function(name) {
     var method = _[name];
     wrapper.prototype[name] = function() {
-      unshift.call(arguments, this._wrapped);
-      return result(method.apply(_, arguments), this._chain);
+      var args = _.toArray(arguments);
+      unshift.call(args, this._wrapped);
+      return result(method.apply(_, args), this._chain);
     };
   });
 

From 4f1a72da5172d3aa3e5dbebbf42e9cca48ed4e5b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 14 Jan 2010 09:39:58 -0500
Subject: [PATCH 111/533] update docs to mention native 'reduce' -- but it's JS
 1.8, not 1.6

---
 index.html | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index 34378d703..6f100537e 100644
--- a/index.html
+++ b/index.html
@@ -87,11 +87,9 @@
       functional suspects: <b>map</b>, <b>select</b>, <b>invoke</b> &mdash;
       as well as more specialized helpers: function binding, javascript
       templating, deep equality testing, and so on. It delegates to built-in
-      functions, if present, so
-      <a href="https://developer.mozilla.org/en/New_in_JavaScript_1.6">JavaScript 1.6</a>
-      compliant browsers will use the
-      native implementations of <b>forEach</b>, <b>map</b>, <b>filter</b>,
-      <b>every</b>, <b>some</b> and <b>indexOf</b>.
+      functions, if present, so modern browsers will use the
+      native implementations of <b>forEach</b>, <b>map</b>, <b>reduce</b>, 
+      <b>filter</b>, <b>every</b>, <b>some</b> and <b>indexOf</b>.
     </p>
 
     <p>

From 94195e661d6aa5af92820318dbff3c462e2fed18 Mon Sep 17 00:00:00 2001
From: noah <iamnoah@gmail.com>
Date: Fri, 15 Jan 2010 23:25:52 -0500
Subject: [PATCH 112/533] Made _.template delimeters customizable

---
 index.html      | 14 ++++++++++++++
 test/utility.js | 15 +++++++++++++++
 underscore.js   | 16 ++++++++++++----
 3 files changed, 41 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 6f100537e..70490a641 100644
--- a/index.html
+++ b/index.html
@@ -994,6 +994,11 @@ _.uniqueId('contact_');
         variables. If you're writing a one-off, you can pass the <b>context</b>
         object as the second parameter to <b>template</b> in order to render
         immediately instead of returning a template function.
+        <br />
+        If the <i>&lt;% &hellip; %&gt;</i> syntax is not convenient because 
+        your templating languages assigns special meaning to it, the delimeters
+        can be customized by passing an object as the first argument. See the
+        code sample below for options.
       </p>
       <pre>
 var compiled = _.template("hello: &lt;%= name %&gt;");
@@ -1003,6 +1008,15 @@ compiled({name : 'moe'});
 var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&gt;&lt;/li&gt; &lt;% }); %&gt;";
 _.template(list, {people : ['moe', 'curly', 'larry']});
 =&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
+
+var custom = "{{ _.each(people, function(name) { }} &lt;li&gt;{{= name }}&lt;/li&gt; {{ }); }}";
+_.template({
+	template: custom,
+	start: '{{', // the code start delimeter
+	end: '}}', // the code end delimeter
+	interpolate: /\{\{=(.+?)\}\}/g // a regex with 1 capture group for the var name
+}, {people : ['moe', 'curly', 'larry']});
+=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
 </pre>
 
       <h2>Chaining</h2>
diff --git a/test/utility.js b/test/utility.js
index 7b1357dcf..93263c9c6 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -39,8 +39,23 @@ $(document).ready(function() {
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
+    var custom = _.template({
+    	template: "<ul>{{ for (key in people) { }}<li>{{= people[key] }}</li>{{ } }}</ul>",
+    	start: "{{",	end: "}}",
+    	interpolate: /\{\{=(.+?)\}\}/g
+	});
+    result = custom({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
+    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+
     var quoteTemplate = _.template("It's its, not it's");
     equals(quoteTemplate({}), "It's its, not it's");
+
+    var customQuote = _.template({
+    	template: "It's its, not it's",
+    	start: "{{",	end: "}}",
+    	interpolate: /\{\{=(.+?)\}\}/g
+	});
+    equals(customQuote({}), "It's its, not it's");
   });
 
 });
diff --git a/underscore.js b/underscore.js
index 4385967c6..c0f901651 100644
--- a/underscore.js
+++ b/underscore.js
@@ -563,16 +563,24 @@
   // "Secrets of the JavaScript Ninja", page 83.
   // Single-quote fix from Rick Strahl's version.
   _.template = function(str, data) {
+	var start = '<%', end = '%>',
+	  interpolate = /<%=(.+?)%>/g;
+	if(str && !_.isString(str)) {
+	  start = str.start || start;
+	  end = str.end || end;
+	  interpolate = str.interpolate || interpolate;  		
+	  str = str.template;
+	}
     var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
-         .replace(/'(?=[^%]*%>)/g,"\t")
+         .replace(new RegExp("'(?=[^"+end[0]+"]*"+end+")","g"),"\t")
          .split("'").join("\\'")
          .split("\t").join("'")
-         .replace(/<%=(.+?)%>/g, "',$1,'")
-         .split("<%").join("');")
-         .split("%>").join("p.push('")
+         .replace(interpolate, "',$1,'")
+         .split(start).join("');")
+         .split(end).join("p.push('")
          + "');}return p.join('');");
     return data ? fn(data) : fn;
   };

From 7d9e603be862a66a093c0062a580d5fc8c95ce1b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 18 Jan 2010 12:45:04 -0500
Subject: [PATCH 113/533] Underscore 0.5.6, with custom template delimiters

---
 index.html        | 53 ++++++++++++++++++++++++++++-------------------
 test/utility.js   | 33 +++++++++++++++++------------
 underscore-min.js |  9 ++++----
 underscore.js     | 27 ++++++++++++------------
 4 files changed, 71 insertions(+), 51 deletions(-)

diff --git a/index.html b/index.html
index 70490a641..1a03be19f 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.5)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.6)</a></td>
           <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.5)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.6)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -979,8 +979,7 @@ result;
       </p>
       <pre>
 _.uniqueId('contact_');
-=&gt; 'contact_104'
-</pre>
+=&gt; 'contact_104'</pre>
 
       <p id="template">
         <b class="header">template</b><code>_.template(templateString, [context])</code>
@@ -988,17 +987,12 @@ _.uniqueId('contact_');
         Compiles JavaScript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
         data sources. Template functions can both interpolate variables, using<br />
-        <i>&lt;%= &hellip; %&gt;</i>, as well as execute arbitrary JavaScript code, with
-        <i>&lt;% &hellip; %&gt;</i>. When you evaluate a template function, pass in a
+        <tt>&lt;%= &hellip; %&gt;</tt>, as well as execute arbitrary JavaScript code, with
+        <tt>&lt;% &hellip; %&gt;</tt>. When you evaluate a template function, pass in a
         <b>context</b> object that has properties corresponding to the template's free
         variables. If you're writing a one-off, you can pass the <b>context</b>
         object as the second parameter to <b>template</b> in order to render
         immediately instead of returning a template function.
-        <br />
-        If the <i>&lt;% &hellip; %&gt;</i> syntax is not convenient because 
-        your templating languages assigns special meaning to it, the delimeters
-        can be customized by passing an object as the first argument. See the
-        code sample below for options.
       </p>
       <pre>
 var compiled = _.template("hello: &lt;%= name %&gt;");
@@ -1007,17 +1001,28 @@ compiled({name : 'moe'});
 
 var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&gt;&lt;/li&gt; &lt;% }); %&gt;";
 _.template(list, {people : ['moe', 'curly', 'larry']});
-=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
+=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"</pre>
 
-var custom = "{{ _.each(people, function(name) { }} &lt;li&gt;{{= name }}&lt;/li&gt; {{ }); }}";
-_.template({
-	template: custom,
-	start: '{{', // the code start delimeter
-	end: '}}', // the code end delimeter
-	interpolate: /\{\{=(.+?)\}\}/g // a regex with 1 capture group for the var name
-}, {people : ['moe', 'curly', 'larry']});
-=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
-</pre>
+      <p>
+        If ERB-style delimiters aren't your cup of tea, you can change Underscore's
+        template settings to use different symbols to set off interpolated code.
+        Define <b>start</b> and <b>end</b> tokens, and an <b>interpolate</b> regex
+        to match expressions that should be evaluated and inserted. For example,
+        to perform 
+        <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a> 
+        style templating:
+      </p>
+      
+      <pre>
+_.templateSettings = {
+  start       : '{{',
+  end         : '}}',
+  interpolate : /\{\{(.+?)\}\}/g
+};
+        
+var template = _.template("Hello {{ name }}!");
+template({name : "Mustache"});
+=&gt; "Hello Mustache!"</pre>
 
       <h2>Chaining</h2>
 
@@ -1079,6 +1084,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.6</b><br />
+        Customizable delimiters for <tt>_.template</tt>, contributed by
+        <a href="http://github.com/iamnoah">Noah Sloan</a>.
+      </p>
+      
       <p>
         <b class="header">0.5.5</b><br />
         Fix for a bug in MobileSafari's OOP-wrapper, with the arguments object.
diff --git a/test/utility.js b/test/utility.js
index 93263c9c6..763a48036 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -39,23 +39,30 @@ $(document).ready(function() {
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
-    var custom = _.template({
-    	template: "<ul>{{ for (key in people) { }}<li>{{= people[key] }}</li>{{ } }}</ul>",
-    	start: "{{",	end: "}}",
-    	interpolate: /\{\{=(.+?)\}\}/g
-	});
-    result = custom({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
-    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
-
     var quoteTemplate = _.template("It's its, not it's");
     equals(quoteTemplate({}), "It's its, not it's");
 
-    var customQuote = _.template({
-    	template: "It's its, not it's",
-    	start: "{{",	end: "}}",
-    	interpolate: /\{\{=(.+?)\}\}/g
-	});
+    _.templateSettings = {
+      start       : '{{',
+      end         : '}}',
+      interpolate : /\{\{=(.+?)\}\}/g
+    };
+
+    var custom = _.template("<ul>{{ for (key in people) { }}<li>{{= people[key] }}</li>{{ } }}</ul>");
+    result = custom({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
+    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+
+    var customQuote = _.template("It's its, not it's");
     equals(customQuote({}), "It's its, not it's");
+
+    _.templateSettings = {
+      start       : '{{',
+      end         : '}}',
+      interpolate : /\{\{(.+?)\}\}/g
+    };
+
+    var mustache = _.template("Hello {{planet}}!");
+    equals(mustache({planet : "World"}), "Hello World!", "can mimic mustache.js");
   });
 
 });
diff --git a/underscore-min.js b/underscore-min.js
index 9146e0860..2c8b49988 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,4 +1,4 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.5";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.6";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
 a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
 var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
 d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=
@@ -11,6 +11,7 @@ return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(func
 var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.select(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;
 if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
 0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&
-a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.template=function(a,c){a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g,
-" ").replace(/'(?=[^%]*%>)/g,"\t").split("'").join("\\'").split("\t").join("'").replace(/<%=(.+?)%>/g,"',$1,'").split("<%").join("');").split("%>").join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);
-o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;a=new Function("obj",
+"var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(new RegExp("'(?=[^"+d.end[0]+"]*"+d.end+")","g"),"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;
+var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,
+arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index c0f901651..cb620b4fd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.5';
+  _.VERSION = '0.5.6';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -559,28 +559,29 @@
     return prefix ? prefix + id : id;
   };
 
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    start       : '<%',
+    end         : '%>',
+    interpolate : /<%=(.+?)%>/g
+  };
+
   // JavaScript templating a-la ERB, pilfered from John Resig's
   // "Secrets of the JavaScript Ninja", page 83.
   // Single-quote fix from Rick Strahl's version.
   _.template = function(str, data) {
-	var start = '<%', end = '%>',
-	  interpolate = /<%=(.+?)%>/g;
-	if(str && !_.isString(str)) {
-	  start = str.start || start;
-	  end = str.end || end;
-	  interpolate = str.interpolate || interpolate;  		
-	  str = str.template;
-	}
+    var c  = _.templateSettings;
     var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
-         .replace(new RegExp("'(?=[^"+end[0]+"]*"+end+")","g"),"\t")
+         .replace(new RegExp("'(?=[^"+c.end[0]+"]*"+c.end+")","g"),"\t")
          .split("'").join("\\'")
          .split("\t").join("'")
-         .replace(interpolate, "',$1,'")
-         .split(start).join("');")
-         .split(end).join("p.push('")
+         .replace(c.interpolate, "',$1,'")
+         .split(c.start).join("');")
+         .split(c.end).join("p.push('")
          + "');}return p.join('');");
     return data ? fn(data) : fn;
   };

From 4a94246fd14f427a6d47732e49122ec9059094d4 Mon Sep 17 00:00:00 2001
From: Jed Schmidt <tr@nslator.jp>
Date: Wed, 20 Jan 2010 10:18:45 -0700
Subject: [PATCH 114/533] added obj.calle check to isArguments, to prevent
 misfiring for typeof String

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index cb620b4fd..42bf31a27 100644
--- a/underscore.js
+++ b/underscore.js
@@ -488,7 +488,7 @@
 
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
-    return obj && _.isNumber(obj.length) && !_.isArray(obj) && !propertyIsEnumerable.call(obj, 'length');
+    return obj && obj.callee && _.isNumber(obj.length) && !_.isArray(obj) && !propertyIsEnumerable.call(obj, 'length');
   };
 
   // Is a given value a function?

From 7ec091cc55f825f72dea275ba0e55a7244806dad Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 20 Jan 2010 12:45:32 -0500
Subject: [PATCH 115/533] safer isArguments function -- make sure we're not
 dealing with strings or functions

---
 test/objects.js | 8 +++++++-
 underscore.js   | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index b8affa46e..a75e22ed3 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -73,7 +73,9 @@ $(document).ready(function() {
 
   test("objects: isArguments", function() {
     var args = (function(){ return arguments; })(1, 2, 3);
-    ok(_.isArguments(args), 'the arguments object is an arguments object');
+    ok(!_.isArguments('string'), 'a string is not an arguments object');
+    ok(!_.isArguments(_.isArguments), 'a function is not an arguments object');
+    ok(_.isArguments(args), 'but the arguments object is an arguments object');
     ok(!_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
     ok(!_.isArguments([1,2,3]), 'and not vanilla arrays.');
   });
@@ -89,8 +91,12 @@ $(document).ready(function() {
   });
 
   test("objects: isNumber", function() {
+    ok(!_.isNumber('string'), 'a string is not a number');
     ok(!_.isNumber(arguments), 'the arguments object is not a number');
+    ok(!_.isNumber(undefined), 'undefined is not a number');
     ok(_.isNumber(3 * 4 - 7 / 10), 'but numbers are');
+    ok(_.isNumber(NaN), 'NaN is a number');
+    ok(_.isNumber(Infinity), 'Infinity is a number');
   });
 
   test("objects: isFunction", function() {
diff --git a/underscore.js b/underscore.js
index 42bf31a27..5575a6d1b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -488,7 +488,7 @@
 
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
-    return obj && obj.callee && _.isNumber(obj.length) && !_.isArray(obj) && !propertyIsEnumerable.call(obj, 'length');
+    return obj && _.isNumber(obj.length) && !obj.concat && !obj.substr && !obj.apply && !propertyIsEnumerable.call(obj, 'length');
   };
 
   // Is a given value a function?

From 52ac3db77cbbd3e86bc614dfbc1ae1ce85b9bd1b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 20 Jan 2010 13:17:28 -0500
Subject: [PATCH 116/533] Underscore 0.5.7 is on the books

---
 index.html        | 10 ++++++++--
 underscore-min.js | 14 +++++++-------
 underscore.js     |  6 +++---
 3 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/index.html b/index.html
index 1a03be19f..a57aaf6fd 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.6)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.7)</a></td>
           <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.6)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.7)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1084,6 +1084,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.7</b><br />
+        A safer implementation of <tt>_.isArguments</tt>, thanks to 
+        <a href="http://jedschmidt.com/">Jed Schmidt</a>.
+      </p>
+      
       <p>
         <b class="header">0.5.6</b><br />
         Customizable delimiters for <tt>_.template</tt>, contributed by
diff --git a/underscore-min.js b/underscore-min.js
index 2c8b49988..8a88c5a05 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,4 +1,4 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.6";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.7";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
 a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
 var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
 d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=
@@ -6,12 +6,12 @@ function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if
 function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return k.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?k.call(a,
 0,c):a[0]};b.rest=function(a,c,d){return k.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,
 e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=
-a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;1;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);b.each(c,function(d){a[d]=b.bind(a[d],a)});
+a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||j,d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);b.each(c,function(d){a[d]=b.bind(a[d],a)});
 return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=function(a){if(b.isArray(a))return b.range(0,a.length);
 var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.select(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;
 if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
-0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!b.isArray(a)&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&
-a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;a=new Function("obj",
-"var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(new RegExp("'(?=[^"+d.end[0]+"]*"+d.end+")","g"),"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;b.methods=b.functions;
-var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,
-arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=
+function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;
+a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(new RegExp("'(?=[^"+d.end[0]+"]*"+d.end+")","g"),"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;
+b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=
+function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 5575a6d1b..2f178fa35 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,10 +1,10 @@
 // Underscore.js
-// (c) 2009 Jeremy Ashkenas, DocumentCloud Inc.
+// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the terms of the MIT license.
 // Portions of Underscore are inspired by or borrowed from Prototype.js,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
-// http://documentcloud.github.com/underscore/
+// http://documentcloud.github.com/underscore
 
 (function() {
 
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.6';
+  _.VERSION = '0.5.7';
 
   // ------------------------ Collection Functions: ---------------------------
 

From 30858c50a809fda225a1b48043b2ed0576e50166 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 20 Jan 2010 13:50:08 -0500
Subject: [PATCH 117/533] added suggested speed boost for isNumber

---
 index.html        |  3 ++-
 test/temp.js      | 18 ++++++++++--------
 underscore-min.js |  4 ++--
 underscore.js     |  2 +-
 4 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/index.html b/index.html
index a57aaf6fd..a5291356f 100644
--- a/index.html
+++ b/index.html
@@ -1086,7 +1086,8 @@ _([1, 2, 3]).value();
       
       <p>
         <b class="header">0.5.7</b><br />
-        A safer implementation of <tt>_.isArguments</tt>, thanks to 
+        A safer implementation of <tt>_.isArguments</tt>, and a 
+        faster <tt>_.isNumber</tt>, thanks to 
         <a href="http://jedschmidt.com/">Jed Schmidt</a>.
       </p>
       
diff --git a/test/temp.js b/test/temp.js
index 657807239..68c39dc57 100644
--- a/test/temp.js
+++ b/test/temp.js
@@ -8,18 +8,20 @@
   var objects = _.map(numbers, function(n){ return {num : n}; });
   var randomized = _.sortBy(numbers, function(){ return Math.random(); });
 
-  JSLitmus.test('_.each()', function() {
-    var timesTwo = [];
-    _.each(numbers, function(num){ timesTwo.push(num * 2); });
-    return timesTwo;
+  JSLitmus.test('_.isNumber', function() {
+    return _.isNumber(1000)
   });
 
-  JSLitmus.test('_.isString', function() {
-    return _.isString(str);
+  JSLitmus.test('_.newIsNumber', function() {
+    return _.newIsNumber(1000)
   });
 
-  JSLitmus.test('_.isStringNew', function() {
-    return _.isStringNew(str);
+  JSLitmus.test('_.isNumber(NaN)', function() {
+    return _.isNumber(NaN)
+  });
+
+  JSLitmus.test('_.newIsNumber(NaN)', function() {
+    return _.newIsNumber(NaN)
   });
 
 })();
\ No newline at end of file
diff --git a/underscore-min.js b/underscore-min.js
index 8a88c5a05..53145b713 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -10,8 +10,8 @@ a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toA
 return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=function(a){if(b.isArray(a))return b.range(0,a.length);
 var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.select(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;
 if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
-0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=
-function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;
+0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};
+b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;
 a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(new RegExp("'(?=[^"+d.end[0]+"]*"+d.end+")","g"),"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;
 b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=
 function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 2f178fa35..7006910e9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -503,7 +503,7 @@
 
   // Is a given value a number?
   _.isNumber = function(obj) {
-    return toString.call(obj) === '[object Number]';
+    return (obj === +obj) || (toString.call(obj) === '[object Number]');
   };
 
   // Is a given value a date?

From 21f37e43a1478be99a5f020ff2b0c1ff94600619 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 27 Jan 2010 14:05:27 -0500
Subject: [PATCH 118/533] adding duck typing section so that it's not
 unexpected

---
 index.html | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/index.html b/index.html
index a5291356f..db2bcaba1 100644
--- a/index.html
+++ b/index.html
@@ -1053,6 +1053,19 @@ _([1, 2, 3]).value();
 =&gt; [1, 2, 3]
 </pre>
 
+      <h2 id="duck_typing">Duck Typing</h2>
+      
+      <p>
+        The <b>isType</b> (<tt>isArray</tt>, <tt>isFunction</tt>, <tt>isString</tt> ...) family of type-checking
+        functions use property detection to do their work, which, although
+        orders of magnitude faster than the alternative, isn't entirely safe when dealing 
+        with objects that are used as hashes, where arbitrary strings are being 
+        set for the keys. It's entirely possible for an object to masquerade as 
+        another type, if you're setting properties with names like "concat" and 
+        "charCodeAt". So be aware.
+      </p>
+      
+
       <h2>Links &amp; Suggested Reading</h2>
       
       <p>

From 5b5ee87c7a2fa0aa092dc8e87c83973c6c112f4b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 28 Jan 2010 00:55:41 -0500
Subject: [PATCH 119/533] Underscore 0.5.8, with collection functions that once
 again work on NodeLists and HTMLCollections

---
 index.html          | 15 ++++++++++++---
 test/collections.js |  6 ++++++
 underscore-min.js   | 10 +++++-----
 underscore.js       |  8 ++++----
 4 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/index.html b/index.html
index db2bcaba1..8e26a9659 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.7)</a></td>
+          <td><a href="underscore.js">Development Version (0.5.8)</a></td>
           <td><i>22kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.7)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.5.8)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1097,10 +1097,19 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">0.5.8</b><br />
+        Fixed Underscore's collection functions to work on 
+        <a href="https://developer.mozilla.org/En/DOM/NodeList">NodeLists</a> and 
+        <a href="https://developer.mozilla.org/En/DOM/HTMLCollection">HTMLCollections</a>
+        once more, thanks to 
+        <a href="http://github.com/jmtulloss">Justin Tulloss</a>.
+      </p>
+      
       <p>
         <b class="header">0.5.7</b><br />
         A safer implementation of <tt>_.isArguments</tt>, and a 
-        faster <tt>_.isNumber</tt>, thanks to 
+        faster <tt>_.isNumber</tt>,<br />thanks to 
         <a href="http://jedschmidt.com/">Jed Schmidt</a>.
       </p>
       
diff --git a/test/collections.js b/test/collections.js
index 935edcb95..3759a6495 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -44,6 +44,12 @@ $(document).ready(function() {
 
     var doubled = _([1, 2, 3]).map(function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
+
+    var ids = _.map(document.body.childNodes, function(n){ return n.id; });
+    ok(_.include(ids, 'qunit-header'), 'can use collection methods on NodeLists');
+
+    var ids = _.map(document.images, function(n){ return n.id; });
+    ok(ids[0] == 'chart_image', 'can use collection methods on HTMLCollections');
   });
 
   test('collections: reduce', function() {
diff --git a/underscore-min.js b/underscore-min.js
index 53145b713..9492ae919 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,8 +1,8 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.7";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isArray(a)||b.isArguments(a))for(var e=0,f=a.length;e<f;e++)c.call(d,
-a[e],e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);
-var f=b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
-d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(b.isArray(a))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=
-function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,
+(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.8";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],
+e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);var f=
+b.clone(b.toArray(a)).reverse();b.each(f,function(g,h){c=d.call(e,c,g,h,a)});return c};b.detect=function(a,c,d){var e;b.each(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.select=function(a,c,d){if(a&&b.isFunction(a.filter))return a.filter(c,d);var e=[];b.each(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];b.each(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.all=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.every))return a.every(c,
+d);var e=true;b.each(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.any=function(a,c,d){c=c||b.identity;if(a&&b.isFunction(a.some))return a.some(c,d);var e=false;b.each(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(a&&b.isFunction(a.indexOf))return b.indexOf(a,c)!=-1;var d=false;b.each(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,
+d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};b.each(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,
 function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=e.criteria;f=f.criteria;return e<f?-1:e>f?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return k.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?k.call(a,
 0,c):a[0]};b.rest=function(a,c,d){return k.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.select(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.select(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,
 e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.select(b.uniq(a),function(d){return b.all(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(a.indexOf)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(a.lastIndexOf)return a.lastIndexOf(c);for(var d=
diff --git a/underscore.js b/underscore.js
index 7006910e9..faadaeb85 100644
--- a/underscore.js
+++ b/underscore.js
@@ -38,7 +38,7 @@
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // Current version.
-  _.VERSION = '0.5.7';
+  _.VERSION = '0.5.8';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -49,7 +49,7 @@
     try {
       if (obj.forEach) {
         obj.forEach(iterator, context);
-      } else if (_.isArray(obj) || _.isArguments(obj)) {
+      } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
         var keys = _.keys(obj), l = keys.length;
@@ -152,7 +152,7 @@
   // Determine if a given value is included in the array or object,
   // based on '==='.
   _.include = function(obj, target) {
-    if (_.isArray(obj)) return _.indexOf(obj, target) != -1;
+    if (obj && _.isFunction(obj.indexOf)) return _.indexOf(obj, target) != -1;
     var found = false;
     _.each(obj, function(value) {
       if (found = value === target) _.breakLoop();
@@ -400,7 +400,7 @@
 
   // Retrieve the names of an object's properties.
   _.keys = function(obj) {
-    if(_.isArray(obj)) return _.range(0, obj.length);
+    if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
     return keys;

From d01bb56833efc411d69b9b8d790bacfbbf461dfa Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 5 Feb 2010 08:22:40 -0500
Subject: [PATCH 120/533] adding type tests across iframes for all isType
 functions

---
 test/objects.js | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index a75e22ed3..ef01a5517 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -66,9 +66,30 @@ $(document).ready(function() {
     ok(_.isEmpty(obj), 'deleting all the keys from an object empties it');
   });
 
+  // Setup remote variables for iFrame tests.
+  var iframe = document.createElement('iframe');
+  jQuery(iframe).appendTo(document.body);
+  var iDoc = iframe.contentDocument || iframe.contentWindow.document;
+  iDoc.write(
+    "<script>\
+      parent.iElement   = document.createElement('div');\
+      parent.iArguments = (function(){ return arguments; })(1, 2, 3);\
+      parent.iArray     = [1, 2, 3];\
+      parent.iString    = 'hello';\
+      parent.iNumber    = 100;\
+      parent.iFunction  = (function(){});\
+      parent.iDate      = new Date();\
+      parent.iRegExp    = /hi/;\
+      parent.iNaN       = NaN;\
+      parent.iNull      = null;\
+      parent.iUndefined = undefined;\
+    </script>"
+  );
+
   test("objects: isElement", function() {
     ok(!_.isElement('div'), 'strings are not dom elements');
     ok(_.isElement($('html')[0]), 'the html tag is a DOM element');
+    ok(_.isElement(iElement), 'even from another frame');
   });
 
   test("objects: isArguments", function() {
@@ -78,16 +99,19 @@ $(document).ready(function() {
     ok(_.isArguments(args), 'but the arguments object is an arguments object');
     ok(!_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
     ok(!_.isArguments([1,2,3]), 'and not vanilla arrays.');
+    ok(_.isArguments(iArguments), 'event from another frame');
   });
 
   test("objects: isArray", function() {
     ok(!_.isArray(arguments), 'the arguments object is not an array');
     ok(_.isArray([1, 2, 3]), 'but arrays are');
+    ok(_.isArray(iArray), 'even from another frame');
   });
 
   test("objects: isString", function() {
     ok(!_.isString(document.body), 'the document body is not a string');
     ok(_.isString([1, 2, 3].join(', ')), 'but strings are');
+    ok(_.isString(iString), 'even from another frame');
   });
 
   test("objects: isNumber", function() {
@@ -97,23 +121,27 @@ $(document).ready(function() {
     ok(_.isNumber(3 * 4 - 7 / 10), 'but numbers are');
     ok(_.isNumber(NaN), 'NaN is a number');
     ok(_.isNumber(Infinity), 'Infinity is a number');
+    ok(_.isNumber(iNumber), 'even from another frame');
   });
 
   test("objects: isFunction", function() {
     ok(!_.isFunction([1, 2, 3]), 'arrays are not functions');
     ok(!_.isFunction('moe'), 'strings are not functions');
     ok(_.isFunction(_.isFunction), 'but functions are');
+    ok(_.isFunction(iFunction), 'even from another frame');
   });
 
   test("objects: isDate", function() {
     ok(!_.isDate(100), 'numbers are not dates');
     ok(!_.isDate({}), 'objects are not dates');
     ok(_.isDate(new Date()), 'but dates are');
+    ok(_.isDate(iDate), 'even from another frame');
   });
 
   test("objects: isRegExp", function() {
     ok(!_.isRegExp(_.identity), 'functions are not RegExps');
     ok(_.isRegExp(/identity/), 'but RegExps are');
+    ok(_.isRegExp(iRegExp), 'even from another frame');
   });
 
   test("objects: isNaN", function() {
@@ -121,12 +149,14 @@ $(document).ready(function() {
     ok(!_.isNaN(null), 'null is not NaN');
     ok(!_.isNaN(0), '0 is not NaN');
     ok(_.isNaN(NaN), 'but NaN is');
+    ok(_.isNaN(iNaN), 'even from another frame');
   });
 
   test("objects: isNull", function() {
     ok(!_.isNull(undefined), 'undefined is not null');
     ok(!_.isNull(NaN), 'NaN is not null');
     ok(_.isNull(null), 'but null is');
+    ok(_.isNull(iNull), 'even from another frame');
   });
 
   test("objects: isUndefined", function() {
@@ -135,6 +165,7 @@ $(document).ready(function() {
     ok(!_.isUndefined(false), 'false is defined');
     ok(_.isUndefined(), 'nothing is undefined');
     ok(_.isUndefined(undefined), 'undefined is undefined');
+    ok(_.isUndefined(iUndefined), 'even from another frame');
   });
 
   test("objects: tap", function() {

From 11e7af06e9f92d290acaef68cbd175a7fbaee46e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 8 Feb 2010 07:12:40 -0500
Subject: [PATCH 121/533] close that iframe document after writing to it

---
 test/objects.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/objects.js b/test/objects.js
index ef01a5517..c1c4aa327 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -85,6 +85,7 @@ $(document).ready(function() {
       parent.iUndefined = undefined;\
     </script>"
   );
+  iDoc.close();
 
   test("objects: isElement", function() {
     ok(!_.isElement('div'), 'strings are not dom elements');

From 59a4f49bfa5c611d1053d7e96dfcf9270be80f48 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:05:45 -0600
Subject: [PATCH 122/533] Make internal var each = _.each

We use it everwhere, so this should be a slight speedup
but make code more readable
---
 underscore.js | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/underscore.js b/underscore.js
index faadaeb85..a115ed6d3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -44,6 +44,7 @@
 
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
+  var each = 
   _.each = function(obj, iterator, context) {
     var index = 0;
     try {
@@ -66,7 +67,7 @@
   _.map = function(obj, iterator, context) {
     if (obj && _.isFunction(obj.map)) return obj.map(iterator, context);
     var results = [];
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       results.push(iterator.call(context, value, index, list));
     });
     return results;
@@ -76,7 +77,7 @@
   // inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
   _.reduce = function(obj, memo, iterator, context) {
     if (obj && _.isFunction(obj.reduce)) return obj.reduce(_.bind(iterator, context), memo);
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
     return memo;
@@ -87,7 +88,7 @@
   _.reduceRight = function(obj, memo, iterator, context) {
     if (obj && _.isFunction(obj.reduceRight)) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
-    _.each(reversed, function(value, index) {
+    each(reversed, function(value, index) {
       memo = iterator.call(context, memo, value, index, obj);
     });
     return memo;
@@ -96,7 +97,7 @@
   // Return the first value which passes a truth test.
   _.detect = function(obj, iterator, context) {
     var result;
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) {
         result = value;
         _.breakLoop();
@@ -110,7 +111,7 @@
   _.select = function(obj, iterator, context) {
     if (obj && _.isFunction(obj.filter)) return obj.filter(iterator, context);
     var results = [];
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       iterator.call(context, value, index, list) && results.push(value);
     });
     return results;
@@ -119,7 +120,7 @@
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       !iterator.call(context, value, index, list) && results.push(value);
     });
     return results;
@@ -131,7 +132,7 @@
     iterator = iterator || _.identity;
     if (obj && _.isFunction(obj.every)) return obj.every(iterator, context);
     var result = true;
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
     });
     return result;
@@ -143,7 +144,7 @@
     iterator = iterator || _.identity;
     if (obj && _.isFunction(obj.some)) return obj.some(iterator, context);
     var result = false;
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) _.breakLoop();
     });
     return result;
@@ -154,7 +155,7 @@
   _.include = function(obj, target) {
     if (obj && _.isFunction(obj.indexOf)) return _.indexOf(obj, target) != -1;
     var found = false;
-    _.each(obj, function(value) {
+    each(obj, function(value) {
       if (found = value === target) _.breakLoop();
     });
     return found;
@@ -177,7 +178,7 @@
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
     var result = {computed : -Infinity};
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed >= result.computed && (result = {value : value, computed : computed});
     });
@@ -188,7 +189,7 @@
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
     var result = {computed : Infinity};
-    _.each(obj, function(value, index, list) {
+    each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed < result.computed && (result = {value : value, computed : computed});
     });
@@ -356,7 +357,7 @@
   _.bindAll = function(obj) {
     var funcs = _.rest(arguments);
     if (funcs.length == 0) funcs = _.functions(obj);
-    _.each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
     return obj;
   };
 
@@ -606,7 +607,7 @@
   };
 
   // Add all of the Underscore functions to the wrapper object.
-  _.each(_.functions(_), function(name) {
+  each(_.functions(_), function(name) {
     var method = _[name];
     wrapper.prototype[name] = function() {
       var args = _.toArray(arguments);
@@ -616,7 +617,7 @@
   });
 
   // Add all mutator Array functions to the wrapper.
-  _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
     var method = Array.prototype[name];
     wrapper.prototype[name] = function() {
       method.apply(this._wrapped, arguments);
@@ -625,7 +626,7 @@
   });
 
   // Add all accessor Array functions to the wrapper.
-  _.each(['concat', 'join', 'slice'], function(name) {
+  each(['concat', 'join', 'slice'], function(name) {
     var method = Array.prototype[name];
     wrapper.prototype[name] = function() {
       return result(method.apply(this._wrapped, arguments), this._chain);

From 7ec8d12d6c4644dcdade95c06125aca26f3e748f Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:16:10 -0600
Subject: [PATCH 123/533] rename underscore methods after the native [] method
 names, aliases for ruby versions

Even though the native methods have worse names (forEach, every, some),
since this library is trying to smooth over the native language it makes
more sense to use the native names, and provide aliases for more sensible
names from other languages, not the other way around.

Note this doesn't change any external usage, it just makes more sense.

This should also be useful for abstraction purposes for building underscore
functions, something like:

  addFn('some', {has_native: true, our_version: function () {...}})

this way we could feature detect on load for native versions and build a
function, and also have the option to turn off native versions for testing
our implementation.

I Also standardized the comments to look like:
  Delegates to JavaScript 1.x's native y if available.
---
 underscore.js | 43 +++++++++++++++++++++++--------------------
 1 file changed, 23 insertions(+), 20 deletions(-)

diff --git a/underscore.js b/underscore.js
index a115ed6d3..20b18eba6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -44,8 +44,9 @@
 
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
+  // Delegates to JavaScript 1.6's native forEach if available.
   var each = 
-  _.each = function(obj, iterator, context) {
+  _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
       if (obj.forEach) {
@@ -62,8 +63,8 @@
     return obj;
   };
 
-  // Return the results of applying the iterator to each element. Use JavaScript
-  // 1.6's version of map, if possible.
+  // Return the results of applying the iterator to each element. 
+  // Delegates to JavaScript 1.6's native map if available.
   _.map = function(obj, iterator, context) {
     if (obj && _.isFunction(obj.map)) return obj.map(iterator, context);
     var results = [];
@@ -74,7 +75,8 @@
   };
 
   // Reduce builds up a single result from a list of values. Also known as
-  // inject, or foldl. Uses JavaScript 1.8's version of reduce, if possible.
+  // inject, or foldl.
+  // Delegates to JavaScript 1.8's native reduce if available.
   _.reduce = function(obj, memo, iterator, context) {
     if (obj && _.isFunction(obj.reduce)) return obj.reduce(_.bind(iterator, context), memo);
     each(obj, function(value, index, list) {
@@ -84,7 +86,7 @@
   };
 
   // The right-associative version of reduce, also known as foldr. Uses
-  // JavaScript 1.8's version of reduceRight, if available.
+  // Delegates to JavaScript 1.8's native reduceRight if available.
   _.reduceRight = function(obj, memo, iterator, context) {
     if (obj && _.isFunction(obj.reduceRight)) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
@@ -106,9 +108,9 @@
     return result;
   };
 
-  // Return all the elements that pass a truth test. Use JavaScript 1.6's
-  // filter(), if it exists.
-  _.select = function(obj, iterator, context) {
+  // Return all the elements that pass a truth test. 
+  // Delegates to JavaScript 1.6's native filter if available.
+  _.filter = function(obj, iterator, context) {
     if (obj && _.isFunction(obj.filter)) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
@@ -126,9 +128,9 @@
     return results;
   };
 
-  // Determine whether all of the elements match a truth test. Delegate to
-  // JavaScript 1.6's every(), if it is present.
-  _.all = function(obj, iterator, context) {
+  // Determine whether all of the elements match a truth test. 
+  // Delegates to JavaScript 1.6's native every if available.
+  _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (obj && _.isFunction(obj.every)) return obj.every(iterator, context);
     var result = true;
@@ -138,9 +140,9 @@
     return result;
   };
 
-  // Determine if at least one element in the object matches a truth test. Use
-  // JavaScript 1.6's some(), if it exists.
-  _.any = function(obj, iterator, context) {
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to JavaScript 1.6's native some if available.
+  _.some = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (obj && _.isFunction(obj.some)) return obj.some(iterator, context);
     var result = false;
@@ -310,14 +312,15 @@
   // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
   // we need this function. Return the position of the first occurence of an
   // item in an array, or -1 if the item is not included in the array.
+  // Delegates to JavaScript 1.8's native indexOf if available.
   _.indexOf = function(array, item) {
     if (array.indexOf) return array.indexOf(item);
     for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
 
-  // Provide JavaScript 1.6's lastIndexOf, delegating to the native function,
-  // if possible.
+
+  // Delegates to JavaScript 1.6's native lastIndexOf if available.
   _.lastIndexOf = function(array, item) {
     if (array.lastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
@@ -589,12 +592,12 @@
 
   // ------------------------------- Aliases ----------------------------------
 
-  _.forEach  = _.each;
+  _.each     = _.forEach;
   _.foldl    = _.inject       = _.reduce;
   _.foldr    = _.reduceRight;
-  _.filter   = _.select;
-  _.every    = _.all;
-  _.some     = _.any;
+  _.select   = _.filter;
+  _.all      = _.every;
+  _.any      = _.some;
   _.head     = _.first;
   _.tail     = _.rest;
   _.methods  = _.functions;

From c4daac089b26ba67dcd477b9babaeb3c37d2d19a Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:26:34 -0600
Subject: [PATCH 124/533] delegate to native Object.keys in nightlies

---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 20b18eba6..ac694195e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -403,7 +403,8 @@
   // ------------------------- Object Functions: ------------------------------
 
   // Retrieve the names of an object's properties.
-  _.keys = function(obj) {
+  // ECMA5 has Object.keys(obj) in webkit nightlies 
+  _.keys = Object.keys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);

From c43de549bacd3f6def734317656ddae7fa52c4cf Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:41:18 -0600
Subject: [PATCH 125/533] Create #alias method, callable on any object, _ by
 default.

While I'm not a fan of making abstractions where a simpe solution
exists, I think this is good as it makes a public API for extending
underscore, therefore making it "ok" to make your own alias names.

Also give us some future proofing in case we ever add in hooks on
method definition. For example, right now if you add a method
or make an alias in user code, it isn't added to the wrapper prototype.

Added tests and inline docs, no external docs
---
 test/objects.js | 17 ++++++++++++++++-
 underscore.js   | 43 ++++++++++++++++++++++++++++++++++---------
 2 files changed, 50 insertions(+), 10 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index c1c4aa327..8743eaed8 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -11,7 +11,7 @@ $(document).ready(function() {
   });
 
   test("objects: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
+    var expected = ["alias", "all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
@@ -183,4 +183,19 @@ $(document).ready(function() {
       value();
     ok(returned == 6 && intercepted == 6, 'can use tapped objects in a chain');
   });
+  
+
+  test("objects: alias", function() {
+    _.alias('isEqual', 'isTheSame');
+    ok(_.isTheSame(9, 9), 'by default aliases methods on underscore');
+    delete _.isTheSame;
+    //
+    var o = { hi: function () {return 9;} };
+    _.alias(o, 'hi', 'ho');
+    equals(o.ho(), 9, 'can add an alias on another object');
+    _.alias(o, 'hi', 'there', 'sir');
+    ok(o.hi==o.sir, 'can add multiple aliases');
+  });
+  
+  
 });
diff --git a/underscore.js b/underscore.js
index ac694195e..538019fc8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -440,6 +440,31 @@
     return obj;
   };
 
+  // Alias a method on an object to another name(s).
+  // If the first argument is NOT an object, then the object is assumed to 
+  // be underscore.
+  // The first string argument is the existing method name, any following
+  // strings will be aliased to that name.  
+  // Returns the object for chainability.
+  //
+  // Examples:
+  //
+  // Alias isEquals to isSame and eql on underscore:
+  //    _.alias('isEqual', 'isSame', 'eql');
+  //
+  // Alias `toString` to `to_s` on a given object: 
+  //    _.alias({}, 'toString', 'to_s')
+  //
+  // Implementation: explicitly cast arguments to array as calling mutating
+  // array methods on arguments object has strange behavior (at least in FF 3.6) 
+  _.alias = function () {
+    var args = _.toArray(arguments), 
+        obj = (typeof args[0] === 'string')?  _ : args.shift(),
+        fn = obj[args.shift()];
+    each(args, function (alias) {  obj[alias] = fn;  });
+    return obj;
+  };
+
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
     // Check object identity.
@@ -593,15 +618,15 @@
 
   // ------------------------------- Aliases ----------------------------------
 
-  _.each     = _.forEach;
-  _.foldl    = _.inject       = _.reduce;
-  _.foldr    = _.reduceRight;
-  _.select   = _.filter;
-  _.all      = _.every;
-  _.any      = _.some;
-  _.head     = _.first;
-  _.tail     = _.rest;
-  _.methods  = _.functions;
+  _.alias('forEach', 'each').
+    alias('reduce', 'foldl', 'inject').
+    alias('reduceRight', 'foldr').
+    alias('filter', 'select').
+    alias('every', 'all').
+    alias('some', 'any').
+    alias('first', 'head').
+    alias('rest', 'tail').
+    alias('functions', 'methods');
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
 

From 386ee8ade99a1ec68378e4e0caba9c3ac28e91f8 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:45:24 -0600
Subject: [PATCH 126/533] add reference to underscore.js on docs page, since
 this is a good place to play around with it in the console

---
 index.html | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.html b/index.html
index 8e26a9659..7332f4c88 100644
--- a/index.html
+++ b/index.html
@@ -4,6 +4,7 @@
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
   <title>Underscore.js</title>
+  <script src="underscore.js"></script>
   <style>
     body {
       font-size: 16px;

From 130e860ecf2f42bddf503cb603d8e2f2661034db Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:48:29 -0600
Subject: [PATCH 127/533] improve #isEmpty implementation.  add 2 tests

---
 test/objects.js | 2 ++
 underscore.js   | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 8743eaed8..272b66ef1 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -60,6 +60,8 @@ $(document).ready(function() {
     ok(_.isEmpty([]), '[] is empty');
     ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
     ok(_.isEmpty({}), '{} is empty');
+    ok(_.isEmpty(null), 'null is empty');
+    ok(_.isEmpty(), 'undefined is empty');
 
     var obj = {one : 1};
     delete obj.one;
diff --git a/underscore.js b/underscore.js
index 538019fc8..88433489f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -503,7 +503,9 @@
 
   // Is a given array or object empty?
   _.isEmpty = function(obj) {
-    return _.keys(obj).length == 0;
+    if (_.isArray(obj)) return obj.length===0;
+    for (var k in obj) return false;
+    return true;
   };
 
   // Is a given value a DOM element?

From 76bbfddd95933553aff75158b06e230f57dcaad7 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:51:38 -0600
Subject: [PATCH 128/533] our #reduceRight delegates to #reduce after
 reversing.

no need to reimplement it.

also, reduceRight is worthless :)
---
 underscore.js | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index 88433489f..6c9004370 100644
--- a/underscore.js
+++ b/underscore.js
@@ -90,10 +90,7 @@
   _.reduceRight = function(obj, memo, iterator, context) {
     if (obj && _.isFunction(obj.reduceRight)) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
-    each(reversed, function(value, index) {
-      memo = iterator.call(context, memo, value, index, obj);
-    });
-    return memo;
+    return reduce(reversed, memo, iterator, context);
   };
 
   // Return the first value which passes a truth test.

From 1b1943b0caa7b54d0f6bb1dbba65c7b5439784c9 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 09:53:36 -0600
Subject: [PATCH 129/533] implement include in terms of detect

---
 underscore.js | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/underscore.js b/underscore.js
index 6c9004370..cce9756a4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -149,15 +149,12 @@
     return result;
   };
 
-  // Determine if a given value is included in the array or object,
-  // based on '==='.
+  // Determine if a given value is included in the array or object using '==='.
   _.include = function(obj, target) {
     if (obj && _.isFunction(obj.indexOf)) return _.indexOf(obj, target) != -1;
-    var found = false;
-    each(obj, function(value) {
-      if (found = value === target) _.breakLoop();
+    return !! _.detect(obj, function(value) {
+      return value === target;
     });
-    return found;
   };
 
   // Invoke a method with arguments on every item in a collection.

From 263b1ee92d49147e6a507e3316141d66a912c760 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 10:12:22 -0600
Subject: [PATCH 130/533] add #buildLookup method to turn collection in to a
 fast lookup hash

implement #without in terms of it
add tests and internal docs
---
 test/collections.js |  7 +++++++
 test/objects.js     |  2 +-
 underscore.js       | 22 ++++++++++++++++++++--
 3 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 3759a6495..516dbf334 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -164,5 +164,12 @@ $(document).ready(function() {
   test('collections: size', function() {
     equals(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
   });
+  
+  test('collections: buildLookup', function() {
+    same(_.buildLookup([1,'hi']), {1:true, 'hi':true}, 'defaults values to true');
+    same(_.buildLookup([1,'hi'], 1), {1:1, 'hi':1}, 'can override value');
+    same(_.buildLookup({5:'five'}), {five: true}, 'making a map from an object uses its values');
+  });
+  
 
 });
diff --git a/test/objects.js b/test/objects.js
index 272b66ef1..02e00abd1 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -11,7 +11,7 @@ $(document).ready(function() {
   });
 
   test("objects: functions", function() {
-    var expected = ["alias", "all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
+    var expected = ["alias", "all", "any", "bind", "bindAll", "breakLoop", "buildLookup", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
diff --git a/underscore.js b/underscore.js
index cce9756a4..6c120a772 100644
--- a/underscore.js
+++ b/underscore.js
@@ -230,6 +230,24 @@
   _.size = function(obj) {
     return _.toArray(obj).length;
   };
+  
+  // Build a lookup map from a collection.
+  // Pay a little memory upfront to make searching a collection for a 
+  // value faster later
+  // e.g:
+  //
+  //  var lookup = _.buildLookup([1,2,8])  // {1: true, 2: true, 8: true}
+  //  lookup[key]   // instead of: _.include(array, key)
+  //
+  // See example usage in #without
+  // By default sets the value to true, can pass in a value to use instead
+  _.buildLookup = function (obj, useValue) {
+    useValue = (useValue === undefined)?  true :  useValue;
+    return _.reduce(obj, {}, function (memo, value) {  
+      memo[value] = useValue;  
+      return memo;
+    });
+  };   
 
   // -------------------------- Array Functions: ------------------------------
 
@@ -269,8 +287,8 @@
 
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
-    var values = _.rest(arguments);
-    return _.select(array, function(value){ return !_.include(values, value); });
+    var lookup = _.buildLookup(_.rest(arguments));
+    return _.filter(array, function(value){ return !lookup[value]; });
   };
 
   // Produce a duplicate-free version of the array. If the array has already

From 5a5e14d7a4e3c9271575acae3048cb7e8096ff72 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Wed, 17 Feb 2010 10:21:59 -0600
Subject: [PATCH 131/533] add #times utility method.

_(3).times(alert)

added tests and internal docs
---
 test/objects.js |  2 +-
 test/utility.js | 11 +++++++++++
 underscore.js   |  7 +++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 02e00abd1..71e46bdb6 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -17,7 +17,7 @@ $(document).ready(function() {
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
-    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "toArray", "uniq",
+    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     ok(_(expected).isEqual(_.methods(_)), 'provides a sorted list of functions');
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
diff --git a/test/utility.js b/test/utility.js
index 763a48036..b006dee32 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -29,6 +29,17 @@ $(document).ready(function() {
     while(i++ < 100) ids.push(_.uniqueId());
     equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
+  
+  test("utility: times", function() {
+    var vals = [];
+    _.times(3, function (i) { vals.push(i); });
+    ok(_.isEqual(vals, [0,1,2]), "is 0 indexed");
+    //
+    vals = [];
+    _(3).times(function (i) { vals.push(i); });
+    ok(_.isEqual(vals, [0,1,2]), "works as a wrapper");
+  });
+  
 
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
diff --git a/underscore.js b/underscore.js
index 6c120a772..cf6a1578e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -589,6 +589,13 @@
   _.identity = function(value) {
     return value;
   };
+  
+  // run a function n times.  
+  // looks good in wrapper form:
+  //    _(3).times(alert)
+  _.times = function (n, fn, context) {
+    for (var i=0; i < n; i++)  fn.call(context, i)
+  };
 
   // Break out of the middle of an iteration.
   _.breakLoop = function() {

From b774bf7ca9770625c0dffa99d46c14f22fdf7776 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Mon, 22 Feb 2010 14:37:54 -0600
Subject: [PATCH 132/533] delegate to ECMA5 native Array.isArray if available

---
 underscore.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index cf6a1578e..bd74fbcf5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -415,7 +415,7 @@
   // ------------------------- Object Functions: ------------------------------
 
   // Retrieve the names of an object's properties.
-  // ECMA5 has Object.keys(obj) in webkit nightlies 
+  // Delegates to ECMA5's native Object.keys
   _.keys = Object.keys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
@@ -526,7 +526,8 @@
   };
 
   // Is a given value an array?
-  _.isArray = function(obj) {
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = Array.isArray || function(obj) {
     return !!(obj && obj.concat && obj.unshift);
   };
 

From bb250e7205b9e0b481233ae2bcf542d2e288dfd7 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Mon, 22 Feb 2010 15:50:01 -0600
Subject: [PATCH 133/533] Much better strategy for calling native Array
 methods.

Compare an object's function with === to the native
version before calling it.  That is, don't just assume that
because an object has a 'filter' property thats a function,
that we should call that in _.filter().

Expose the native methods found as _.native

On the way towards being able to turn off native implementations,
though there are tradeoffs...
---
 underscore.js | 43 +++++++++++++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 12 deletions(-)

diff --git a/underscore.js b/underscore.js
index bd74fbcf5..a445cdcb0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -37,6 +37,25 @@
       hasOwnProperty        = Object.prototype.hasOwnProperty,
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
+  // All native implementations we hope to use are declared here, 
+  // mostly Array.prototype methods.
+  //
+  // 'native' is on the long list of reserved words.  
+  // Ok to use as a property name, though jsLint doesn't agree.
+  var Native = _['native'] = {
+    forEach:        Array.prototype.forEach,
+    map:            Array.prototype.map,
+    reduce:         Array.prototype.reduce,
+    reduceRight:    Array.prototype.reduceRight,
+    filter:         Array.prototype.filter,
+    every:          Array.prototype.every,
+    some:           Array.prototype.some,
+    indexOf:        Array.prototype.indexOf,
+    lastIndexOf:    Array.prototype.lastIndexOf,
+    isArray:        Array.isArray,
+    keys:           Object.keys
+  };
+  
   // Current version.
   _.VERSION = '0.5.8';
 
@@ -49,7 +68,7 @@
   _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
-      if (obj.forEach) {
+      if (obj.forEach === Native.forEach) {
         obj.forEach(iterator, context);
       } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
@@ -66,7 +85,7 @@
   // Return the results of applying the iterator to each element. 
   // Delegates to JavaScript 1.6's native map if available.
   _.map = function(obj, iterator, context) {
-    if (obj && _.isFunction(obj.map)) return obj.map(iterator, context);
+    if (obj.map === Native.map) return obj.map(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       results.push(iterator.call(context, value, index, list));
@@ -78,7 +97,7 @@
   // inject, or foldl.
   // Delegates to JavaScript 1.8's native reduce if available.
   _.reduce = function(obj, memo, iterator, context) {
-    if (obj && _.isFunction(obj.reduce)) return obj.reduce(_.bind(iterator, context), memo);
+    if (obj.reduce === Native.reduce) return obj.reduce(_.bind(iterator, context), memo);
     each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
@@ -88,7 +107,7 @@
   // The right-associative version of reduce, also known as foldr. Uses
   // Delegates to JavaScript 1.8's native reduceRight if available.
   _.reduceRight = function(obj, memo, iterator, context) {
-    if (obj && _.isFunction(obj.reduceRight)) return obj.reduceRight(_.bind(iterator, context), memo);
+    if (obj.reduceRight === Native.reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
     return reduce(reversed, memo, iterator, context);
   };
@@ -108,7 +127,7 @@
   // Return all the elements that pass a truth test. 
   // Delegates to JavaScript 1.6's native filter if available.
   _.filter = function(obj, iterator, context) {
-    if (obj && _.isFunction(obj.filter)) return obj.filter(iterator, context);
+    if (obj.filter === Native.filter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       iterator.call(context, value, index, list) && results.push(value);
@@ -129,7 +148,7 @@
   // Delegates to JavaScript 1.6's native every if available.
   _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj && _.isFunction(obj.every)) return obj.every(iterator, context);
+    if (obj.every === Native.every) return obj.every(iterator, context);
     var result = true;
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
@@ -141,7 +160,7 @@
   // Delegates to JavaScript 1.6's native some if available.
   _.some = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj && _.isFunction(obj.some)) return obj.some(iterator, context);
+    if (obj.some === Native.some) return obj.some(iterator, context);
     var result = false;
     each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) _.breakLoop();
@@ -326,7 +345,7 @@
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to JavaScript 1.8's native indexOf if available.
   _.indexOf = function(array, item) {
-    if (array.indexOf) return array.indexOf(item);
+    if (array.indexOf === Native.indexOf) return array.indexOf(item);
     for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
@@ -334,7 +353,7 @@
 
   // Delegates to JavaScript 1.6's native lastIndexOf if available.
   _.lastIndexOf = function(array, item) {
-    if (array.lastIndexOf) return array.lastIndexOf(item);
+    if (array.lastIndexOf === Native.lastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
     while (i--) if (array[i] === item) return i;
     return -1;
@@ -416,7 +435,7 @@
 
   // Retrieve the names of an object's properties.
   // Delegates to ECMA5's native Object.keys
-  _.keys = Object.keys || function(obj) {
+  _.keys = Native.keys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
@@ -515,7 +534,7 @@
 
   // Is a given array or object empty?
   _.isEmpty = function(obj) {
-    if (_.isArray(obj)) return obj.length===0;
+    if (_.isArray(obj)) return obj.length === 0;
     for (var k in obj) return false;
     return true;
   };
@@ -527,7 +546,7 @@
 
   // Is a given value an array?
   // Delegates to ECMA5's native Array.isArray
-  _.isArray = Array.isArray || function(obj) {
+  _.isArray = Native.isArray || function(obj) {
     return !!(obj && obj.concat && obj.unshift);
   };
 

From 31f0f8c54cb5211cc48f6a1ee92fcedc4ed89a20 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Mon, 22 Feb 2010 15:57:23 -0600
Subject: [PATCH 134/533] make a local variable that points to Array.prototype
 since the former is not min'd down.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Won't effect gzip size, but reduces min size.  Saves about:

15 bytes per instance * 13 instances ≅ 200 bytes
---
 underscore.js | 33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

diff --git a/underscore.js b/underscore.js
index a445cdcb0..5e0297322 100644
--- a/underscore.js
+++ b/underscore.js
@@ -30,28 +30,29 @@
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayPrototype = Array.prototype;
+  
   // Create quick reference variables for speed access to core prototypes.
-  var slice                 = Array.prototype.slice,
-      unshift               = Array.prototype.unshift,
+  var slice                 = ArrayPrototype.slice,
+      unshift               = ArrayPrototype.unshift,
       toString              = Object.prototype.toString,
       hasOwnProperty        = Object.prototype.hasOwnProperty,
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
-  // All native implementations we hope to use are declared here, 
-  // mostly Array.prototype methods.
-  //
+  // All native implementations we hope to use are declared here.
   // 'native' is on the long list of reserved words.  
   // Ok to use as a property name, though jsLint doesn't agree.
   var Native = _['native'] = {
-    forEach:        Array.prototype.forEach,
-    map:            Array.prototype.map,
-    reduce:         Array.prototype.reduce,
-    reduceRight:    Array.prototype.reduceRight,
-    filter:         Array.prototype.filter,
-    every:          Array.prototype.every,
-    some:           Array.prototype.some,
-    indexOf:        Array.prototype.indexOf,
-    lastIndexOf:    Array.prototype.lastIndexOf,
+    forEach:        ArrayPrototype.forEach,
+    map:            ArrayPrototype.map,
+    reduce:         ArrayPrototype.reduce,
+    reduceRight:    ArrayPrototype.reduceRight,
+    filter:         ArrayPrototype.filter,
+    every:          ArrayPrototype.every,
+    some:           ArrayPrototype.some,
+    indexOf:        ArrayPrototype.indexOf,
+    lastIndexOf:    ArrayPrototype.lastIndexOf,
     isArray:        Array.isArray,
     keys:           Object.keys
   };
@@ -688,7 +689,7 @@
 
   // Add all mutator Array functions to the wrapper.
   each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-    var method = Array.prototype[name];
+    var method = ArrayPrototype[name];
     wrapper.prototype[name] = function() {
       method.apply(this._wrapped, arguments);
       return result(this._wrapped, this._chain);
@@ -697,7 +698,7 @@
 
   // Add all accessor Array functions to the wrapper.
   each(['concat', 'join', 'slice'], function(name) {
-    var method = Array.prototype[name];
+    var method = ArrayPrototype[name];
     wrapper.prototype[name] = function() {
       return result(method.apply(this._wrapped, arguments), this._chain);
     };

From b5449ca89a6defbe78196b2686a2131bf18eb751 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 16:40:50 -0600
Subject: [PATCH 135/533] Add rake task to build with closure advanced
 optimizations.

You would use this to compile your code _with_ underscore, to
remove all those dead underscore functions you don't use.

Slight tweak to code to `root._` code to get working, and must
remove anonymous wrapper function for current closure compiler to
remove dead code.
---
 Rakefile      | 22 ++++++++++++++++++++--
 underscore.js |  5 +++--
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/Rakefile b/Rakefile
index 6af14bb6d..2c085058a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,9 +1,27 @@
 require 'rubygems'
 require 'closure-compiler'
-
+  
 desc "Use the Closure Compiler to compress Underscore.js"
 task :build do
   js  = File.open('underscore.js', 'r')
   min = Closure::Compiler.new.compile(js)
   File.open('underscore-min.js', 'w') {|f| f.write(min) }
-end
\ No newline at end of file
+end
+
+task :build_advanced do
+  js  = File.read('underscore.js')
+  # remove wrapping anonymous function as this messes with closure compiler
+  # see
+  # http://groups.google.com/group/closure-compiler-discuss/browse_thread/thread/b59b54c1a0073aa5
+  js.sub!('(function() {', '').chomp!("})();\n")
+  compiler = Closure::Compiler.new \
+    :compilation_level => 'ADVANCED_OPTIMIZATIONS', 
+    :formatting => 'PRETTY_PRINT'
+  min = compiler.compile(js)
+  File.open('underscore-min2.js', 'w') {|f| f.write(min) }
+  #
+  original_size = js.length
+  minimized_size = min.length
+  puts original_size, minimized_size
+end
+
diff --git a/underscore.js b/underscore.js
index 5e0297322..696b63f4e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -25,8 +25,9 @@
   var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
 
   // Create a safe reference to the Underscore object for reference below.
-  var _ = root._ = function(obj) { return new wrapper(obj); };
-
+  var _ = function(obj) { return new wrapper(obj); };
+  root._ = _;
+  
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 

From 164e19c121b617b53734d313e44b9f386b994100 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 17:13:18 -0600
Subject: [PATCH 136/533] use `var native_reduceRight` etc. variables instead
 of `Native = { reduceRight: ... }`

This way we only get the native versions of functions we use.
Will make testing non-native versions as we can't just swap do `_.Native = {}`,
but this wouldn't have worked for `isArray` and `keys` anyways, as these are
looked up on initialization, so I think the solution is to have an init()
method on underscore where we will re-initialize functions and try and use
native versions then
---
 underscore.js | 59 ++++++++++++++++++++++++---------------------------
 1 file changed, 28 insertions(+), 31 deletions(-)

diff --git a/underscore.js b/underscore.js
index 696b63f4e..609e5b567 100644
--- a/underscore.js
+++ b/underscore.js
@@ -32,31 +32,28 @@
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Save bytes in the minified (but not gzipped) version:
-  var ArrayPrototype = Array.prototype;
+  var Array_Prototype = Array.prototype;
   
   // Create quick reference variables for speed access to core prototypes.
-  var slice                 = ArrayPrototype.slice,
-      unshift               = ArrayPrototype.unshift,
+  var slice                 = Array_Prototype.slice,
+      unshift               = Array_Prototype.unshift,
       toString              = Object.prototype.toString,
       hasOwnProperty        = Object.prototype.hasOwnProperty,
       propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
 
   // All native implementations we hope to use are declared here.
-  // 'native' is on the long list of reserved words.  
-  // Ok to use as a property name, though jsLint doesn't agree.
-  var Native = _['native'] = {
-    forEach:        ArrayPrototype.forEach,
-    map:            ArrayPrototype.map,
-    reduce:         ArrayPrototype.reduce,
-    reduceRight:    ArrayPrototype.reduceRight,
-    filter:         ArrayPrototype.filter,
-    every:          ArrayPrototype.every,
-    some:           ArrayPrototype.some,
-    indexOf:        ArrayPrototype.indexOf,
-    lastIndexOf:    ArrayPrototype.lastIndexOf,
-    isArray:        Array.isArray,
-    keys:           Object.keys
-  };
+  var 
+    native_forEach      = Array_Prototype.forEach,
+    native_map          = Array_Prototype.map,
+    native_reduce       = Array_Prototype.reduce,
+    native_reduceRight  = Array_Prototype.reduceRight,
+    native_filter       = Array_Prototype.filter,
+    native_every        = Array_Prototype.every,
+    native_some         = Array_Prototype.some,
+    native_indexOf      = Array_Prototype.indexOf,
+    native_lastIndexOf  = Array_Prototype.lastIndexOf,
+    native_isArray      = Array['isArray'],
+    native_keys         = Object['keys'];
   
   // Current version.
   _.VERSION = '0.5.8';
@@ -70,7 +67,7 @@
   _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
-      if (obj.forEach === Native.forEach) {
+      if (obj.forEach === native_forEach) {
         obj.forEach(iterator, context);
       } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
@@ -87,7 +84,7 @@
   // Return the results of applying the iterator to each element. 
   // Delegates to JavaScript 1.6's native map if available.
   _.map = function(obj, iterator, context) {
-    if (obj.map === Native.map) return obj.map(iterator, context);
+    if (obj.map === native_map) return obj.map(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       results.push(iterator.call(context, value, index, list));
@@ -99,7 +96,7 @@
   // inject, or foldl.
   // Delegates to JavaScript 1.8's native reduce if available.
   _.reduce = function(obj, memo, iterator, context) {
-    if (obj.reduce === Native.reduce) return obj.reduce(_.bind(iterator, context), memo);
+    if (obj.reduce === native_reduce) return obj.reduce(_.bind(iterator, context), memo);
     each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
@@ -109,7 +106,7 @@
   // The right-associative version of reduce, also known as foldr. Uses
   // Delegates to JavaScript 1.8's native reduceRight if available.
   _.reduceRight = function(obj, memo, iterator, context) {
-    if (obj.reduceRight === Native.reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+    if (obj.reduceRight === native_reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
     return reduce(reversed, memo, iterator, context);
   };
@@ -129,7 +126,7 @@
   // Return all the elements that pass a truth test. 
   // Delegates to JavaScript 1.6's native filter if available.
   _.filter = function(obj, iterator, context) {
-    if (obj.filter === Native.filter) return obj.filter(iterator, context);
+    if (obj.filter === native_filter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       iterator.call(context, value, index, list) && results.push(value);
@@ -150,7 +147,7 @@
   // Delegates to JavaScript 1.6's native every if available.
   _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.every === Native.every) return obj.every(iterator, context);
+    if (obj.every === native_every) return obj.every(iterator, context);
     var result = true;
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
@@ -162,7 +159,7 @@
   // Delegates to JavaScript 1.6's native some if available.
   _.some = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.some === Native.some) return obj.some(iterator, context);
+    if (obj.some === native_some) return obj.some(iterator, context);
     var result = false;
     each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) _.breakLoop();
@@ -347,7 +344,7 @@
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to JavaScript 1.8's native indexOf if available.
   _.indexOf = function(array, item) {
-    if (array.indexOf === Native.indexOf) return array.indexOf(item);
+    if (array.indexOf === native_indexOf) return array.indexOf(item);
     for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
@@ -355,7 +352,7 @@
 
   // Delegates to JavaScript 1.6's native lastIndexOf if available.
   _.lastIndexOf = function(array, item) {
-    if (array.lastIndexOf === Native.lastIndexOf) return array.lastIndexOf(item);
+    if (array.lastIndexOf === native_lastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
     while (i--) if (array[i] === item) return i;
     return -1;
@@ -437,7 +434,7 @@
 
   // Retrieve the names of an object's properties.
   // Delegates to ECMA5's native Object.keys
-  _.keys = Native.keys || function(obj) {
+  _.keys = native_keys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
@@ -548,7 +545,7 @@
 
   // Is a given value an array?
   // Delegates to ECMA5's native Array.isArray
-  _.isArray = Native.isArray || function(obj) {
+  _.isArray = native_isArray || function(obj) {
     return !!(obj && obj.concat && obj.unshift);
   };
 
@@ -690,7 +687,7 @@
 
   // Add all mutator Array functions to the wrapper.
   each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-    var method = ArrayPrototype[name];
+    var method = Array_Prototype[name];
     wrapper.prototype[name] = function() {
       method.apply(this._wrapped, arguments);
       return result(this._wrapped, this._chain);
@@ -699,7 +696,7 @@
 
   // Add all accessor Array functions to the wrapper.
   each(['concat', 'join', 'slice'], function(name) {
-    var method = ArrayPrototype[name];
+    var method = Array_Prototype[name];
     wrapper.prototype[name] = function() {
       return result(method.apply(this._wrapped, arguments), this._chain);
     };

From 59d383c15179fe740c9a6e236ab156d7bedad0e3 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 17:26:32 -0600
Subject: [PATCH 137/533] Revert "Create #alias method, callable on any object,
 _ by default."

This reverts commit c43de549bacd3f6def734317656ddae7fa52c4cf.

Conflicts:

	test/objects.js
---
 test/objects.js | 19 ++-----------------
 underscore.js   | 43 +++++++++----------------------------------
 2 files changed, 11 insertions(+), 51 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 71e46bdb6..d93d72616 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -11,7 +11,7 @@ $(document).ready(function() {
   });
 
   test("objects: functions", function() {
-    var expected = ["alias", "all", "any", "bind", "bindAll", "breakLoop", "buildLookup", "clone", "compact",
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "buildLookup", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
@@ -19,7 +19,7 @@ $(document).ready(function() {
     "methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
-    ok(_(expected).isEqual(_.methods(_)), 'provides a sorted list of functions');
+    same(expected, _.methods(_), 'provides a sorted list of functions');
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
     ok(_.isEqual(['b', 'd'], _.functions(obj)), 'can grab the function names of any passed-in object');
   });
@@ -185,19 +185,4 @@ $(document).ready(function() {
       value();
     ok(returned == 6 && intercepted == 6, 'can use tapped objects in a chain');
   });
-  
-
-  test("objects: alias", function() {
-    _.alias('isEqual', 'isTheSame');
-    ok(_.isTheSame(9, 9), 'by default aliases methods on underscore');
-    delete _.isTheSame;
-    //
-    var o = { hi: function () {return 9;} };
-    _.alias(o, 'hi', 'ho');
-    equals(o.ho(), 9, 'can add an alias on another object');
-    _.alias(o, 'hi', 'there', 'sir');
-    ok(o.hi==o.sir, 'can add multiple aliases');
-  });
-  
-  
 });
diff --git a/underscore.js b/underscore.js
index 609e5b567..8fae4566d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -470,31 +470,6 @@
     return obj;
   };
 
-  // Alias a method on an object to another name(s).
-  // If the first argument is NOT an object, then the object is assumed to 
-  // be underscore.
-  // The first string argument is the existing method name, any following
-  // strings will be aliased to that name.  
-  // Returns the object for chainability.
-  //
-  // Examples:
-  //
-  // Alias isEquals to isSame and eql on underscore:
-  //    _.alias('isEqual', 'isSame', 'eql');
-  //
-  // Alias `toString` to `to_s` on a given object: 
-  //    _.alias({}, 'toString', 'to_s')
-  //
-  // Implementation: explicitly cast arguments to array as calling mutating
-  // array methods on arguments object has strange behavior (at least in FF 3.6) 
-  _.alias = function () {
-    var args = _.toArray(arguments), 
-        obj = (typeof args[0] === 'string')?  _ : args.shift(),
-        fn = obj[args.shift()];
-    each(args, function (alias) {  obj[alias] = fn;  });
-    return obj;
-  };
-
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
     // Check object identity.
@@ -658,15 +633,15 @@
 
   // ------------------------------- Aliases ----------------------------------
 
-  _.alias('forEach', 'each').
-    alias('reduce', 'foldl', 'inject').
-    alias('reduceRight', 'foldr').
-    alias('filter', 'select').
-    alias('every', 'all').
-    alias('some', 'any').
-    alias('first', 'head').
-    alias('rest', 'tail').
-    alias('functions', 'methods');
+  _.each     = _.forEach;
+  _.foldl    = _.inject       = _.reduce;
+  _.foldr    = _.reduceRight;
+  _.select   = _.filter;
+  _.all      = _.every;
+  _.any      = _.some;
+  _.head     = _.first;
+  _.tail     = _.rest;
+  _.methods  = _.functions;
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
 

From 1cf73c5474c7ba6fc9ee99aa42d5116ea2527b49 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 17:34:34 -0600
Subject: [PATCH 138/533] Re-arrange baseline setup section.

Put all variable declartions in a row, so they can all be
chained together with commas by compiler.

Move wrapper creation code down in OO section.  Not necissary
for `var wrapper` to be defined when _ constructor is defined.
Preparing way to make OO wrapping optional..
---
 underscore.js | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/underscore.js b/underscore.js
index 8fae4566d..7e8b24865 100644
--- a/underscore.js
+++ b/underscore.js
@@ -7,7 +7,6 @@
 // http://documentcloud.github.com/underscore
 
 (function() {
-
   // ------------------------- Baseline setup ---------------------------------
 
   // Establish the root object, "window" in the browser, or "global" on the server.
@@ -16,21 +15,9 @@
   // Save the previous value of the "_" variable.
   var previousUnderscore = root._;
 
-  // If Underscore is called as a function, it returns a wrapped object that
-  // can be used OO-style. This wrapper holds altered versions of all the
-  // underscore functions. Wrapped objects may be chained.
-  var wrapper = function(obj) { this._wrapped = obj; };
-
   // Establish the object that gets thrown to break out of a loop iteration.
   var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
-
-  // Create a safe reference to the Underscore object for reference below.
-  var _ = function(obj) { return new wrapper(obj); };
-  root._ = _;
   
-  // Export the Underscore object for CommonJS.
-  if (typeof exports !== 'undefined') exports._ = _;
-
   // Save bytes in the minified (but not gzipped) version:
   var Array_Prototype = Array.prototype;
   
@@ -52,12 +39,21 @@
     native_some         = Array_Prototype.some,
     native_indexOf      = Array_Prototype.indexOf,
     native_lastIndexOf  = Array_Prototype.lastIndexOf,
-    native_isArray      = Array['isArray'],
+    native_isArray      = Array['isArray'],  // use [] notation since not in closure's externs
     native_keys         = Object['keys'];
   
+  // Create a safe reference to the Underscore object for reference below.
+  var _ = function(obj) { return new wrapper(obj); };
+
+  // Export the Underscore object for CommonJS.
+  if (typeof exports !== 'undefined') exports._ = _;
+
+  // Export underscore to global scope.
+  root._ = _;
+  
   // Current version.
   _.VERSION = '0.5.8';
-
+  
   // ------------------------ Collection Functions: ---------------------------
 
   // The cornerstone, an each implementation.
@@ -92,8 +88,7 @@
     return results;
   };
 
-  // Reduce builds up a single result from a list of values. Also known as
-  // inject, or foldl.
+  // Reduce builds up a single result from a list of values, aka inject, or foldl.
   // Delegates to JavaScript 1.8's native reduce if available.
   _.reduce = function(obj, memo, iterator, context) {
     if (obj.reduce === native_reduce) return obj.reduce(_.bind(iterator, context), memo);
@@ -645,6 +640,11 @@
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
 
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
+  
   // Helper function to continue chaining intermediate results.
   var result = function(obj, chain) {
     return chain ? _(obj).chain() : obj;

From f591f685466bc04d52b932b021e8d72b7225a6ea Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 18:04:47 -0600
Subject: [PATCH 139/533] make _.initWrapper() that builds the wrapper prototye

The intention is that underscore Consumers MUST call _.initWrapper()
in their code to allow the OO style usage, or a runtime error is thrown.
This would break backwards compatability, so for the moment I call
initWrapper myself at the end of underscore.

However, if I comment out my call to initWrapper and don't call it
in user code, then the compiler can strip an empty underscore with
no user code from 2137 -> 100 bytes.  Making the user explicitly say
they want OO wrapping is the only way to achieve this, otherwise the
compiler will always keep the OO wrapper code around.
---
 underscore.js | 102 +++++++++++++++++++++++++++-----------------------
 1 file changed, 56 insertions(+), 46 deletions(-)

diff --git a/underscore.js b/underscore.js
index 7e8b24865..53d70c503 100644
--- a/underscore.js
+++ b/underscore.js
@@ -43,7 +43,7 @@
     native_keys         = Object['keys'];
   
   // Create a safe reference to the Underscore object for reference below.
-  var _ = function(obj) { return new wrapper(obj); };
+  var _ = function(obj) { return _.buildWrapper(obj) };
 
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
@@ -68,8 +68,11 @@
       } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
-        var keys = _.keys(obj), l = keys.length;
-        for (var i=0; i<l; i++) iterator.call(context, obj[keys[i]], keys[i], obj);
+        for (var key in obj) 
+          if (hasOwnProperty.call(obj, key)) 
+            iterator.call(context, obj[key], key, obj);
+        // var keys = _.keys(obj), l = keys.length;
+        // for (var i=0; i<l; i++) iterator.call(context, obj[keys[i]], keys[i], obj);
       }
     } catch(e) {
       if (e != breaker) throw e;
@@ -639,53 +642,60 @@
   _.methods  = _.functions;
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
-
-  // If Underscore is called as a function, it returns a wrapped object that
-  // can be used OO-style. This wrapper holds altered versions of all the
-  // underscore functions. Wrapped objects may be chained.
-  var wrapper = function(obj) { this._wrapped = obj; };
+  _.buildWrapper = function () { throw "Call _.initWrapper() to enable OO wrapping" }
   
-  // Helper function to continue chaining intermediate results.
-  var result = function(obj, chain) {
-    return chain ? _(obj).chain() : obj;
-  };
-
-  // Add all of the Underscore functions to the wrapper object.
-  each(_.functions(_), function(name) {
-    var method = _[name];
-    wrapper.prototype[name] = function() {
-      var args = _.toArray(arguments);
-      unshift.call(args, this._wrapped);
-      return result(method.apply(_, args), this._chain);
+  _.initWrapper = function () {
+    // If Underscore is called as a function, it returns a wrapped object that
+    // can be used OO-style. This wrapper holds altered versions of all the
+    // underscore functions. Wrapped objects may be chained.
+    var wrapper = function(obj) { this._wrapped = obj; };
+    
+    // Overwrite method called from _()
+    _.buildWrapper = function (obj) { return new wrapper(obj) };
+        
+    // Helper function to continue chaining intermediate results.
+    var result = function(obj, chain) {
+      return chain ? _(obj).chain() : obj;
     };
-  });
 
-  // Add all mutator Array functions to the wrapper.
-  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-    var method = Array_Prototype[name];
-    wrapper.prototype[name] = function() {
-      method.apply(this._wrapped, arguments);
-      return result(this._wrapped, this._chain);
+    // Add all of the Underscore functions to the wrapper object.
+    each(_.functions(_), function(name) {
+      var method = _[name];
+      wrapper.prototype[name] = function() {
+        var args = _.toArray(arguments);
+        unshift.call(args, this._wrapped);
+        return result(method.apply(_, args), this._chain);
+      };
+    });
+
+    // Add all mutator Array functions to the wrapper.
+    each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+      var method = Array_Prototype[name];
+      wrapper.prototype[name] = function() {
+        method.apply(this._wrapped, arguments);
+        return result(this._wrapped, this._chain);
+      };
+    });
+
+    // Add all accessor Array functions to the wrapper.
+    each(['concat', 'join', 'slice'], function(name) {
+      var method = Array_Prototype[name];
+      wrapper.prototype[name] = function() {
+        return result(method.apply(this._wrapped, arguments), this._chain);
+      };
+    });
+
+    // Start chaining a wrapped Underscore object.
+    wrapper.prototype.chain = function() {
+      this._chain = true;
+      return this;
     };
-  });
 
-  // Add all accessor Array functions to the wrapper.
-  each(['concat', 'join', 'slice'], function(name) {
-    var method = Array_Prototype[name];
-    wrapper.prototype[name] = function() {
-      return result(method.apply(this._wrapped, arguments), this._chain);
+    // Extracts the result from a wrapped and chained object.
+    wrapper.prototype.value = function() {
+      return this._wrapped;
     };
-  });
-
-  // Start chaining a wrapped Underscore object.
-  wrapper.prototype.chain = function() {
-    this._chain = true;
-    return this;
-  };
-
-  // Extracts the result from a wrapped and chained object.
-  wrapper.prototype.value = function() {
-    return this._wrapped;
-  };
-
+  }
+  
+  _.initWrapper();
 })();

From c9b41a4996aae51b9fc5108f523cca26f02e9047 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 18:13:46 -0600
Subject: [PATCH 140/533] modify rakefile build_advanced to strip off my call
 to _.initWrapper()

---
 Rakefile      | 2 +-
 underscore.js | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Rakefile b/Rakefile
index 2c085058a..1b5d91615 100644
--- a/Rakefile
+++ b/Rakefile
@@ -13,7 +13,7 @@ task :build_advanced do
   # remove wrapping anonymous function as this messes with closure compiler
   # see
   # http://groups.google.com/group/closure-compiler-discuss/browse_thread/thread/b59b54c1a0073aa5
-  js.sub!('(function() {', '').chomp!("})();\n")
+  js.sub!('(function() {', '').chomp!("_.initWrapper();\n})();\n")
   compiler = Closure::Compiler.new \
     :compilation_level => 'ADVANCED_OPTIMIZATIONS', 
     :formatting => 'PRETTY_PRINT'
diff --git a/underscore.js b/underscore.js
index 53d70c503..6260b57b8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -697,5 +697,6 @@
     };
   }
   
+  // For backwards compatability, init the OO wrapper
   _.initWrapper();
 })();

From b8fd129130f0956b43d5336452b1a5f709685b55 Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Tue, 23 Feb 2010 18:20:42 -0600
Subject: [PATCH 141/533] only initWrapper() once.  make wrapper constructor
 accessable as `_._wrapper`.

Previously, there was no way to get at the OO wrapper object.
So if a user added a custom method on to _, or defined a custom
alias, it would not be reflected in the wrapper.  Now it is at
least possible, though there is no API to do it.  I alluded to
making one in my commit that added _.alias() (which I recently reverted,
as it added weight to the stripped version), but honestly I think
the wrapping behavior should go in to a seperate library, not because
it is bad, but because it is an awesome pattern that I want to use
on objects other than underscore.
---
 underscore.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/underscore.js b/underscore.js
index 6260b57b8..d8c795e7e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -645,11 +645,17 @@
   _.buildWrapper = function () { throw "Call _.initWrapper() to enable OO wrapping" }
   
   _.initWrapper = function () {
+    if (_._wrapper) return; // Already initialized
+      
     // If Underscore is called as a function, it returns a wrapped object that
     // can be used OO-style. This wrapper holds altered versions of all the
     // underscore functions. Wrapped objects may be chained.
     var wrapper = function(obj) { this._wrapped = obj; };
     
+    // Make wrapper object public so user code can extend it.
+    // Otherwise, there is no way to modify its prototype
+    _._wrapper = wrapper;
+    
     // Overwrite method called from _()
     _.buildWrapper = function (obj) { return new wrapper(obj) };
         
@@ -698,5 +704,6 @@
   }
   
   // For backwards compatability, init the OO wrapper
+  // the advanced minifying rake task will strip this out
   _.initWrapper();
 })();

From 625adb81a33a4333d24c442fe818d029cd319cf6 Mon Sep 17 00:00:00 2001
From: Rick Fletcher <fletch@pobox.com>
Date: Tue, 23 Feb 2010 23:41:51 -0800
Subject: [PATCH 142/533] Added tests for templates with regex-significant
 characters in their delimiters

---
 test/utility.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/utility.js b/test/utility.js
index 763a48036..8314c7017 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -55,6 +55,19 @@ $(document).ready(function() {
     var customQuote = _.template("It's its, not it's");
     equals(customQuote({}), "It's its, not it's");
 
+    _.templateSettings = {
+      start       : '<?',
+      end         : '?>',
+      interpolate : /<\?=(.+?)\?>/g
+    };
+
+    var customWithSpecialChars = _.template("<ul><? for (key in people) { ?><li><?= people[key] ?></li><? } ?></ul>");
+    result = customWithSpecialChars({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
+    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+
+    var customWithSpecialCharsQuote = _.template("It's its, not it's");
+    equals(customWithSpecialCharsQuote({}), "It's its, not it's");
+
     _.templateSettings = {
       start       : '{{',
       end         : '}}',

From 38a82591b1ef8185a8768361f07363e3cdf08d62 Mon Sep 17 00:00:00 2001
From: Rick Fletcher <fletch@pobox.com>
Date: Tue, 23 Feb 2010 23:44:25 -0800
Subject: [PATCH 143/533] Added failing test for quotes in statements with
 regex-significant characters in tokens

---
 test/utility.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/utility.js b/test/utility.js
index 8314c7017..b693390fe 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -42,6 +42,9 @@ $(document).ready(function() {
     var quoteTemplate = _.template("It's its, not it's");
     equals(quoteTemplate({}), "It's its, not it's");
 
+    var quoteInStatementAndBody = _.template("<% if(foo == 'bar'){ %>Statement quotes and 'quotes'.<% } %>");
+    equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
+
     _.templateSettings = {
       start       : '{{',
       end         : '}}',
@@ -55,6 +58,9 @@ $(document).ready(function() {
     var customQuote = _.template("It's its, not it's");
     equals(customQuote({}), "It's its, not it's");
 
+    var quoteInStatementAndBody = _.template("{{ if(foo == 'bar'){ }}Statement quotes and 'quotes'.{{ } }}");
+    equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
+
     _.templateSettings = {
       start       : '<?',
       end         : '?>',
@@ -68,6 +74,9 @@ $(document).ready(function() {
     var customWithSpecialCharsQuote = _.template("It's its, not it's");
     equals(customWithSpecialCharsQuote({}), "It's its, not it's");
 
+    var quoteInStatementAndBody = _.template("<? if(foo == 'bar'){ ?>Statement quotes and 'quotes'.<? } ?>");
+    equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
+
     _.templateSettings = {
       start       : '{{',
       end         : '}}',

From 3482ec1259005c175c9e7147cd0ebe8ee4b73581 Mon Sep 17 00:00:00 2001
From: Rick Fletcher <fletch@pobox.com>
Date: Tue, 23 Feb 2010 23:47:28 -0800
Subject: [PATCH 144/533] Escape template delimiters before using them in a
 RegExp

---
 underscore-min.js | 6 +++---
 underscore.js     | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 9492ae919..b850fcac3 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -12,6 +12,6 @@ var c=[];for(var d in a)q.call(a,d)&&c.push(d);return c};b.values=function(a){re
 if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){return b.keys(a).length==
 0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!r.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||p.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};
 b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){j._=n;return this};b.identity=function(a){return a};b.breakLoop=function(){throw m;};var s=0;b.uniqueId=function(a){var c=s++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;
-a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(new RegExp("'(?=[^"+d.end[0]+"]*"+d.end+")","g"),"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=b.first;b.tail=b.rest;
-b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=Array.prototype[a];i.prototype[a]=
-function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
+a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(new RegExp("'(?=[^"+d.end[0]+"]*\\"+d.end.split("").join("\\")+")","g"),"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.forEach=b.each;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.filter=b.select;b.every=b.all;b.some=b.any;b.head=
+b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a,c){return c?b(a).chain():a};b.each(b.functions(b),function(a){var c=b[a];i.prototype[a]=function(){var d=b.toArray(arguments);o.call(d,this._wrapped);return l(c.apply(b,d),this._chain)}});b.each(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=Array.prototype[a];i.prototype[a]=function(){c.apply(this._wrapped,arguments);return l(this._wrapped,this._chain)}});b.each(["concat","join","slice"],function(a){var c=
+Array.prototype[a];i.prototype[a]=function(){return l(c.apply(this._wrapped,arguments),this._chain)}});i.prototype.chain=function(){this._chain=true;return this};i.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index faadaeb85..f1f658fef 100644
--- a/underscore.js
+++ b/underscore.js
@@ -576,7 +576,7 @@
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
-         .replace(new RegExp("'(?=[^"+c.end[0]+"]*"+c.end+")","g"),"\t")
+         .replace(new RegExp("'(?=[^"+c.end[0]+"]*\\"+c.end.split('').join("\\")+")","g"),"\t")
          .split("'").join("\\'")
          .split("\t").join("'")
          .replace(c.interpolate, "',$1,'")

From 875633141a9344ceb69bbb494aec77129ef34abf Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 11:03:47 -0500
Subject: [PATCH 145/533] merging rlfletchers branch with a safer _.template
 when the template delimiter includes RegExp characters.

---
 underscore.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index f1f658fef..515897b62 100644
--- a/underscore.js
+++ b/underscore.js
@@ -30,6 +30,9 @@
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
+  // Quick regexp-escaping function, because JS doesn't have RegExp.escape().
+  var escapeRegExp = function(s) { return s.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1'); };
+
   // Create quick reference variables for speed access to core prototypes.
   var slice                 = Array.prototype.slice,
       unshift               = Array.prototype.unshift,
@@ -576,7 +579,7 @@
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
-         .replace(new RegExp("'(?=[^"+c.end[0]+"]*\\"+c.end.split('').join("\\")+")","g"),"\t")
+         .replace(new RegExp("'(?=[^"+c.end[0]+"]*"+escapeRegExp(c.end)+")","g"),"\t")
          .split("'").join("\\'")
          .split("\t").join("'")
          .replace(c.interpolate, "',$1,'")

From 39024c35a62c1e8045f064447409f226f759647f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:03:08 -0500
Subject: [PATCH 146/533] waypoint commit on the big merge

---
 underscore.js | 98 +++++++++++++++++++++++++--------------------------
 1 file changed, 48 insertions(+), 50 deletions(-)

diff --git a/underscore.js b/underscore.js
index 25bafb556..19836ebc3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -20,49 +20,49 @@
 
   // Quick regexp-escaping function, because JS doesn't have RegExp.escape().
   var escapeRegExp = function(s) { return s.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1'); };
-  
+
   // Save bytes in the minified (but not gzipped) version:
-  var Array_Prototype = Array.prototype;
-  
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+
   // Create quick reference variables for speed access to core prototypes.
-  var slice                 = Array_Prototype.slice,
-      unshift               = Array_Prototype.unshift,
-      toString              = Object.prototype.toString,
-      hasOwnProperty        = Object.prototype.hasOwnProperty,
-      propertyIsEnumerable  = Object.prototype.propertyIsEnumerable;
+  var slice                 = ArrayProto.slice,
+      unshift               = ArrayProto.unshift,
+      toString              = ObjProto.toString,
+      hasOwnProperty        = ObjProto.hasOwnProperty,
+      propertyIsEnumerable  = ObjProto.propertyIsEnumerable;
 
   // All native implementations we hope to use are declared here.
-  var 
-    native_forEach      = Array_Prototype.forEach,
-    native_map          = Array_Prototype.map,
-    native_reduce       = Array_Prototype.reduce,
-    native_reduceRight  = Array_Prototype.reduceRight,
-    native_filter       = Array_Prototype.filter,
-    native_every        = Array_Prototype.every,
-    native_some         = Array_Prototype.some,
-    native_indexOf      = Array_Prototype.indexOf,
-    native_lastIndexOf  = Array_Prototype.lastIndexOf,
+  var
+    native_forEach      = ArrayProto.forEach,
+    native_map          = ArrayProto.map,
+    native_reduce       = ArrayProto.reduce,
+    native_reduceRight  = ArrayProto.reduceRight,
+    native_filter       = ArrayProto.filter,
+    native_every        = ArrayProto.every,
+    native_some         = ArrayProto.some,
+    native_indexOf      = ArrayProto.indexOf,
+    native_lastIndexOf  = ArrayProto.lastIndexOf,
     native_isArray      = Array['isArray'],  // use [] notation since not in closure's externs
     native_keys         = Object['keys'];
-  
+
   // Create a safe reference to the Underscore object for reference below.
-  var _ = function(obj) { return _.buildWrapper(obj) };
+  var _ = function(obj) { return _.buildWrapper(obj); };
 
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
 
   // Export underscore to global scope.
   root._ = _;
-  
+
   // Current version.
   _.VERSION = '0.5.8';
-  
+
   // ------------------------ Collection Functions: ---------------------------
 
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
   // Delegates to JavaScript 1.6's native forEach if available.
-  var each = 
+  var each =
   _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
@@ -71,11 +71,9 @@
       } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
       } else {
-        for (var key in obj) 
-          if (hasOwnProperty.call(obj, key)) 
+        for (var key in obj)
+          if (hasOwnProperty.call(obj, key))
             iterator.call(context, obj[key], key, obj);
-        // var keys = _.keys(obj), l = keys.length;
-        // for (var i=0; i<l; i++) iterator.call(context, obj[keys[i]], keys[i], obj);
       }
     } catch(e) {
       if (e != breaker) throw e;
@@ -83,7 +81,7 @@
     return obj;
   };
 
-  // Return the results of applying the iterator to each element. 
+  // Return the results of applying the iterator to each element.
   // Delegates to JavaScript 1.6's native map if available.
   _.map = function(obj, iterator, context) {
     if (obj.map === native_map) return obj.map(iterator, context);
@@ -124,7 +122,7 @@
     return result;
   };
 
-  // Return all the elements that pass a truth test. 
+  // Return all the elements that pass a truth test.
   // Delegates to JavaScript 1.6's native filter if available.
   _.filter = function(obj, iterator, context) {
     if (obj.filter === native_filter) return obj.filter(iterator, context);
@@ -144,7 +142,7 @@
     return results;
   };
 
-  // Determine whether all of the elements match a truth test. 
+  // Determine whether all of the elements match a truth test.
   // Delegates to JavaScript 1.6's native every if available.
   _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
@@ -249,9 +247,9 @@
   _.size = function(obj) {
     return _.toArray(obj).length;
   };
-  
+
   // Build a lookup map from a collection.
-  // Pay a little memory upfront to make searching a collection for a 
+  // Pay a little memory upfront to make searching a collection for a
   // value faster later
   // e.g:
   //
@@ -262,11 +260,11 @@
   // By default sets the value to true, can pass in a value to use instead
   _.buildLookup = function (obj, useValue) {
     useValue = (useValue === undefined)?  true :  useValue;
-    return _.reduce(obj, {}, function (memo, value) {  
-      memo[value] = useValue;  
+    return _.reduce(obj, {}, function (memo, value) {
+      memo[value] = useValue;
       return memo;
     });
-  };   
+  };
 
   // -------------------------- Array Functions: ------------------------------
 
@@ -584,12 +582,12 @@
   _.identity = function(value) {
     return value;
   };
-  
-  // run a function n times.  
+
+  // run a function n times.
   // looks good in wrapper form:
   //    _(3).times(alert)
   _.times = function (n, fn, context) {
-    for (var i=0; i < n; i++)  fn.call(context, i)
+    for (var i = 0; i < n; i++) fn.call(context, i);
   };
 
   // Break out of the middle of an iteration.
@@ -645,23 +643,23 @@
   _.methods  = _.functions;
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
-  _.buildWrapper = function () { throw "Call _.initWrapper() to enable OO wrapping" }
-  
-  _.initWrapper = function () {
+  _.buildWrapper = function() { throw "Call _.initWrapper() to enable OO wrapping"; };
+
+  _.initWrapper = function() {
     if (_._wrapper) return; // Already initialized
-      
+
     // If Underscore is called as a function, it returns a wrapped object that
     // can be used OO-style. This wrapper holds altered versions of all the
     // underscore functions. Wrapped objects may be chained.
     var wrapper = function(obj) { this._wrapped = obj; };
-    
+
     // Make wrapper object public so user code can extend it.
     // Otherwise, there is no way to modify its prototype
     _._wrapper = wrapper;
-    
+
     // Overwrite method called from _()
-    _.buildWrapper = function (obj) { return new wrapper(obj) };
-        
+    _.buildWrapper = function (obj) { return new wrapper(obj); };
+
     // Helper function to continue chaining intermediate results.
     var result = function(obj, chain) {
       return chain ? _(obj).chain() : obj;
@@ -679,7 +677,7 @@
 
     // Add all mutator Array functions to the wrapper.
     each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-      var method = Array_Prototype[name];
+      var method = ArrayProto[name];
       wrapper.prototype[name] = function() {
         method.apply(this._wrapped, arguments);
         return result(this._wrapped, this._chain);
@@ -688,7 +686,7 @@
 
     // Add all accessor Array functions to the wrapper.
     each(['concat', 'join', 'slice'], function(name) {
-      var method = Array_Prototype[name];
+      var method = ArrayProto[name];
       wrapper.prototype[name] = function() {
         return result(method.apply(this._wrapped, arguments), this._chain);
       };
@@ -704,8 +702,8 @@
     wrapper.prototype.value = function() {
       return this._wrapped;
     };
-  }
-  
+  };
+
   // For backwards compatability, init the OO wrapper
   // the advanced minifying rake task will strip this out
   _.initWrapper();

From 69bb3490b38be941fdc95cbc5adceae344c2ce16 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:10:07 -0500
Subject: [PATCH 147/533] camelcase conventions

---
 underscore.js | 44 ++++++++++++++++++++++----------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/underscore.js b/underscore.js
index 19836ebc3..7234e2141 100644
--- a/underscore.js
+++ b/underscore.js
@@ -33,17 +33,17 @@
 
   // All native implementations we hope to use are declared here.
   var
-    native_forEach      = ArrayProto.forEach,
-    native_map          = ArrayProto.map,
-    native_reduce       = ArrayProto.reduce,
-    native_reduceRight  = ArrayProto.reduceRight,
-    native_filter       = ArrayProto.filter,
-    native_every        = ArrayProto.every,
-    native_some         = ArrayProto.some,
-    native_indexOf      = ArrayProto.indexOf,
-    native_lastIndexOf  = ArrayProto.lastIndexOf,
-    native_isArray      = Array['isArray'],  // use [] notation since not in closure's externs
-    native_keys         = Object['keys'];
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys;
 
   // Create a safe reference to the Underscore object for reference below.
   var _ = function(obj) { return _.buildWrapper(obj); };
@@ -66,7 +66,7 @@
   _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
-      if (obj.forEach === native_forEach) {
+      if (obj.forEach === nativeForEach) {
         obj.forEach(iterator, context);
       } else if (_.isNumber(obj.length)) {
         for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
@@ -84,7 +84,7 @@
   // Return the results of applying the iterator to each element.
   // Delegates to JavaScript 1.6's native map if available.
   _.map = function(obj, iterator, context) {
-    if (obj.map === native_map) return obj.map(iterator, context);
+    if (obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       results.push(iterator.call(context, value, index, list));
@@ -95,7 +95,7 @@
   // Reduce builds up a single result from a list of values, aka inject, or foldl.
   // Delegates to JavaScript 1.8's native reduce if available.
   _.reduce = function(obj, memo, iterator, context) {
-    if (obj.reduce === native_reduce) return obj.reduce(_.bind(iterator, context), memo);
+    if (obj.reduce === nativeReduce) return obj.reduce(_.bind(iterator, context), memo);
     each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
@@ -105,7 +105,7 @@
   // The right-associative version of reduce, also known as foldr. Uses
   // Delegates to JavaScript 1.8's native reduceRight if available.
   _.reduceRight = function(obj, memo, iterator, context) {
-    if (obj.reduceRight === native_reduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+    if (obj.reduceRight === nativeReduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
     return reduce(reversed, memo, iterator, context);
   };
@@ -125,7 +125,7 @@
   // Return all the elements that pass a truth test.
   // Delegates to JavaScript 1.6's native filter if available.
   _.filter = function(obj, iterator, context) {
-    if (obj.filter === native_filter) return obj.filter(iterator, context);
+    if (obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       iterator.call(context, value, index, list) && results.push(value);
@@ -146,7 +146,7 @@
   // Delegates to JavaScript 1.6's native every if available.
   _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.every === native_every) return obj.every(iterator, context);
+    if (obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
@@ -158,7 +158,7 @@
   // Delegates to JavaScript 1.6's native some if available.
   _.some = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.some === native_some) return obj.some(iterator, context);
+    if (obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
     each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) _.breakLoop();
@@ -343,7 +343,7 @@
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to JavaScript 1.8's native indexOf if available.
   _.indexOf = function(array, item) {
-    if (array.indexOf === native_indexOf) return array.indexOf(item);
+    if (array.indexOf === nativeIndexOf) return array.indexOf(item);
     for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
     return -1;
   };
@@ -351,7 +351,7 @@
 
   // Delegates to JavaScript 1.6's native lastIndexOf if available.
   _.lastIndexOf = function(array, item) {
-    if (array.lastIndexOf === native_lastIndexOf) return array.lastIndexOf(item);
+    if (array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
     while (i--) if (array[i] === item) return i;
     return -1;
@@ -433,7 +433,7 @@
 
   // Retrieve the names of an object's properties.
   // Delegates to ECMA5's native Object.keys
-  _.keys = native_keys || function(obj) {
+  _.keys = nativeKeys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
@@ -519,7 +519,7 @@
 
   // Is a given value an array?
   // Delegates to ECMA5's native Array.isArray
-  _.isArray = native_isArray || function(obj) {
+  _.isArray = nativeIsArray || function(obj) {
     return !!(obj && obj.concat && obj.unshift);
   };
 

From 2c8fbe78757e80d88b3b50db3a5ba67dd09c42e5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:16:45 -0500
Subject: [PATCH 148/533] remove the advanced_optimizations concessions and the
 advanced_optimizations rake task. Simple will do.

---
 Rakefile      |  19 +--------
 underscore.js | 109 ++++++++++++++++++++++----------------------------
 2 files changed, 48 insertions(+), 80 deletions(-)

diff --git a/Rakefile b/Rakefile
index 1b5d91615..721c294b3 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,6 +1,6 @@
 require 'rubygems'
 require 'closure-compiler'
-  
+
 desc "Use the Closure Compiler to compress Underscore.js"
 task :build do
   js  = File.open('underscore.js', 'r')
@@ -8,20 +8,3 @@ task :build do
   File.open('underscore-min.js', 'w') {|f| f.write(min) }
 end
 
-task :build_advanced do
-  js  = File.read('underscore.js')
-  # remove wrapping anonymous function as this messes with closure compiler
-  # see
-  # http://groups.google.com/group/closure-compiler-discuss/browse_thread/thread/b59b54c1a0073aa5
-  js.sub!('(function() {', '').chomp!("_.initWrapper();\n})();\n")
-  compiler = Closure::Compiler.new \
-    :compilation_level => 'ADVANCED_OPTIMIZATIONS', 
-    :formatting => 'PRETTY_PRINT'
-  min = compiler.compile(js)
-  File.open('underscore-min2.js', 'w') {|f| f.write(min) }
-  #
-  original_size = js.length
-  minimized_size = min.length
-  puts original_size, minimized_size
-end
-
diff --git a/underscore.js b/underscore.js
index 7234e2141..edb159674 100644
--- a/underscore.js
+++ b/underscore.js
@@ -45,8 +45,13 @@
     nativeIsArray      = Array.isArray,
     nativeKeys         = Object.keys;
 
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
+
   // Create a safe reference to the Underscore object for reference below.
-  var _ = function(obj) { return _.buildWrapper(obj); };
+  var _ = function(obj) { return new wrapper(obj); };
 
   // Export the Underscore object for CommonJS.
   if (typeof exports !== 'undefined') exports._ = _;
@@ -643,68 +648,48 @@
   _.methods  = _.functions;
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
-  _.buildWrapper = function() { throw "Call _.initWrapper() to enable OO wrapping"; };
 
-  _.initWrapper = function() {
-    if (_._wrapper) return; // Already initialized
-
-    // If Underscore is called as a function, it returns a wrapped object that
-    // can be used OO-style. This wrapper holds altered versions of all the
-    // underscore functions. Wrapped objects may be chained.
-    var wrapper = function(obj) { this._wrapped = obj; };
-
-    // Make wrapper object public so user code can extend it.
-    // Otherwise, there is no way to modify its prototype
-    _._wrapper = wrapper;
-
-    // Overwrite method called from _()
-    _.buildWrapper = function (obj) { return new wrapper(obj); };
-
-    // Helper function to continue chaining intermediate results.
-    var result = function(obj, chain) {
-      return chain ? _(obj).chain() : obj;
-    };
-
-    // Add all of the Underscore functions to the wrapper object.
-    each(_.functions(_), function(name) {
-      var method = _[name];
-      wrapper.prototype[name] = function() {
-        var args = _.toArray(arguments);
-        unshift.call(args, this._wrapped);
-        return result(method.apply(_, args), this._chain);
-      };
-    });
-
-    // Add all mutator Array functions to the wrapper.
-    each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
-      var method = ArrayProto[name];
-      wrapper.prototype[name] = function() {
-        method.apply(this._wrapped, arguments);
-        return result(this._wrapped, this._chain);
-      };
-    });
-
-    // Add all accessor Array functions to the wrapper.
-    each(['concat', 'join', 'slice'], function(name) {
-      var method = ArrayProto[name];
-      wrapper.prototype[name] = function() {
-        return result(method.apply(this._wrapped, arguments), this._chain);
-      };
-    });
-
-    // Start chaining a wrapped Underscore object.
-    wrapper.prototype.chain = function() {
-      this._chain = true;
-      return this;
-    };
-
-    // Extracts the result from a wrapped and chained object.
-    wrapper.prototype.value = function() {
-      return this._wrapped;
-    };
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj, chain) {
+    return chain ? _(obj).chain() : obj;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  each(_.functions(_), function(name) {
+    var method = _[name];
+    wrapper.prototype[name] = function() {
+      var args = _.toArray(arguments);
+      unshift.call(args, this._wrapped);
+      return result(method.apply(_, args), this._chain);
+    };
+  });
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      method.apply(this._wrapped, arguments);
+      return result(this._wrapped, this._chain);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      return result(method.apply(this._wrapped, arguments), this._chain);
+    };
+  });
+
+  // Start chaining a wrapped Underscore object.
+  wrapper.prototype.chain = function() {
+    this._chain = true;
+    return this;
+  };
+
+  // Extracts the result from a wrapped and chained object.
+  wrapper.prototype.value = function() {
+    return this._wrapped;
   };
 
-  // For backwards compatability, init the OO wrapper
-  // the advanced minifying rake task will strip this out
-  _.initWrapper();
 })();

From 7824d63ce8dc8d76d038b0e6da8691469cdc91fd Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:43:57 -0500
Subject: [PATCH 149/533] make the new faster isEmpty a little safer too

---
 index.html      | 152 ++++++++++++++++++++++++------------------------
 test/objects.js |   3 +-
 underscore.js   |  25 ++++----
 3 files changed, 90 insertions(+), 90 deletions(-)

diff --git a/index.html b/index.html
index 7332f4c88..66aea7125 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,6 @@
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
   <title>Underscore.js</title>
-  <script src="underscore.js"></script>
   <style>
     body {
       font-size: 16px;
@@ -89,7 +88,7 @@
       as well as more specialized helpers: function binding, javascript
       templating, deep equality testing, and so on. It delegates to built-in
       functions, if present, so modern browsers will use the
-      native implementations of <b>forEach</b>, <b>map</b>, <b>reduce</b>, 
+      native implementations of <b>forEach</b>, <b>map</b>, <b>reduce</b>,
       <b>filter</b>, <b>every</b>, <b>some</b> and <b>indexOf</b>.
     </p>
 
@@ -102,7 +101,7 @@
       The unabridged source code is
       <a href="http://github.com/documentcloud/underscore/">available on GitHub</a>.
     </p>
-    
+
     <p>
       <i>Underscore is an open-source component of <a href="http://documentcloud.org/">DocumentCloud</a>.</i>
     </p>
@@ -162,10 +161,10 @@ _(lyrics).chain()
 =&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
 
     <p>
-      In addition, the 
-      <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/Array">Array prototype's methods</a> 
-      are proxied through the chained Underscore object, so you can slip a 
-      <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to 
+      In addition, the
+      <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/Array">Array prototype's methods</a>
+      are proxied through the chained Underscore object, so you can slip a
+      <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to
       modify the array.
     </p>
 
@@ -209,7 +208,7 @@ _(lyrics).chain()
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
       <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
-      <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>, 
+      <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>,
       <a href="#isUndefined">isUndefined</a>
       </span>
     </p>
@@ -240,7 +239,7 @@ _(lyrics).chain()
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
         passed. Each invocation of <b>iterator</b> is called with three arguments:
         <tt>(element, index, list)</tt>. If <b>list</b> is a JavaScript object, <b>iterator</b>'s
-        arguments will be <tt>(value, key, list)</tt>. Use <a href="#breakLoop"><tt>breakLoop</tt></a> 
+        arguments will be <tt>(value, key, list)</tt>. Use <a href="#breakLoop"><tt>breakLoop</tt></a>
         to break out of the iteration. Delegates to the native
         <b>forEach</b> function if it exists.
       </p>
@@ -461,7 +460,7 @@ _.size({one : 1, two : 2, three : 3});
 </pre>
 
       <h2>Array Functions</h2>
-      
+
       <p>
         <i>Note: All array functions will also work on the <b>arguments</b> object.</i>
       </p>
@@ -470,7 +469,7 @@ _.size({one : 1, two : 2, three : 3});
         <b class="header">first</b><code>_.first(array, [n])</code>
         <span class="alias">Alias: <b>head</b></span>
         <br />
-        Returns the first element of an <b>array</b>. Passing <b>n</b> will 
+        Returns the first element of an <b>array</b>. Passing <b>n</b> will
         return the first <b>n</b> elements of the array.
       </p>
       <pre>
@@ -738,7 +737,7 @@ _.values({one : 1, two : 2, three : 3});
         <span class="alias">Alias: <b>methods</b></span>
         <br />
         Returns a sorted list of the names of every method in an object &mdash;
-        that is to say, the name of every function property of the object. 
+        that is to say, the name of every function property of the object.
       </p>
       <pre>
 _.functions(_);
@@ -770,7 +769,7 @@ _.clone({name : 'moe'});
       <p id="tap">
         <b class="header">tap</b><code>_.tap(object, interceptor)</code>
         <br />
-        Invokes <b>interceptor</b> with the <b>object</b>, and then returns <b>object</b>. 
+        Invokes <b>interceptor</b> with the <b>object</b>, and then returns <b>object</b>.
         The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
       </p>
       <pre>
@@ -960,14 +959,14 @@ moe === _.identity(moe);
         <b class="header">breakLoop</b><code>_.breakLoop()</code>
         <br />
         Breaks out of the current loop iteration. Similar to the <tt>break</tt>
-        keyword in regular "for" loop, but works within an iterator function. 
+        keyword in regular "for" loop, but works within an iterator function.
         Uses the native <tt>StopIteration</tt> object in JavaScript 1.7 compliant
         browsers.
       </p>
       <pre>
 var result = null;
-_.each([1, 2, 3], function(num) { 
-  if ((result = num) == 2) _.breakLoop(); 
+_.each([1, 2, 3], function(num) {
+  if ((result = num) == 2) _.breakLoop();
 });
 result;
 =&gt; 2</pre>
@@ -1009,18 +1008,18 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
         template settings to use different symbols to set off interpolated code.
         Define <b>start</b> and <b>end</b> tokens, and an <b>interpolate</b> regex
         to match expressions that should be evaluated and inserted. For example,
-        to perform 
-        <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a> 
+        to perform
+        <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a>
         style templating:
       </p>
-      
+
       <pre>
 _.templateSettings = {
   start       : '{{',
   end         : '}}',
   interpolate : /\{\{(.+?)\}\}/g
 };
-        
+
 var template = _.template("Hello {{ name }}!");
 template({name : "Mustache"});
 =&gt; "Hello Mustache!"</pre>
@@ -1055,119 +1054,119 @@ _([1, 2, 3]).value();
 </pre>
 
       <h2 id="duck_typing">Duck Typing</h2>
-      
+
       <p>
         The <b>isType</b> (<tt>isArray</tt>, <tt>isFunction</tt>, <tt>isString</tt> ...) family of type-checking
         functions use property detection to do their work, which, although
-        orders of magnitude faster than the alternative, isn't entirely safe when dealing 
-        with objects that are used as hashes, where arbitrary strings are being 
-        set for the keys. It's entirely possible for an object to masquerade as 
-        another type, if you're setting properties with names like "concat" and 
+        orders of magnitude faster than the alternative, isn't entirely safe when dealing
+        with objects that are used as hashes, where arbitrary strings are being
+        set for the keys. It's entirely possible for an object to masquerade as
+        another type, if you're setting properties with names like "concat" and
         "charCodeAt". So be aware.
       </p>
-      
+
 
       <h2>Links &amp; Suggested Reading</h2>
-      
+
       <p>
         <a href="http://mirven.github.com/underscore.lua/">Underscore.lua</a>,
-        a Lua port of the functions that are applicable in both languages. 
+        a Lua port of the functions that are applicable in both languages.
         Includes OOP-wrapping and chaining.
-        The <a href="http://github.com/mirven/underscore.lua">source</a> is 
+        The <a href="http://github.com/mirven/underscore.lua">source</a> is
         available on GitHub.
       </p>
-      
+
       <p>
         Ruby's <a href="http://ruby-doc.org/core/classes/Enumerable.html">Enumerable</a> module.
       </p>
-      
+
       <p>
         <a href="http://www.prototypejs.org/">Prototype.js</a>, which provides
         JavaScript with collection functions in the manner closest to Ruby's Enumerable.
       </p>
-        
+
       <p>
-        Oliver Steele's 
+        Oliver Steele's
         <a href="http://osteele.com/sources/javascript/functional/">Functional JavaScript</a>,
         which includes comprehensive higher-order function support as well as string lambdas.
       </p>
-      
+
       <p>
         Python's <a href="http://docs.python.org/library/itertools.html">itertools</a>.
       </p>
 
       <h2>Change Log</h2>
-      
+
       <p>
         <b class="header">0.5.8</b><br />
-        Fixed Underscore's collection functions to work on 
-        <a href="https://developer.mozilla.org/En/DOM/NodeList">NodeLists</a> and 
+        Fixed Underscore's collection functions to work on
+        <a href="https://developer.mozilla.org/En/DOM/NodeList">NodeLists</a> and
         <a href="https://developer.mozilla.org/En/DOM/HTMLCollection">HTMLCollections</a>
-        once more, thanks to 
+        once more, thanks to
         <a href="http://github.com/jmtulloss">Justin Tulloss</a>.
       </p>
-      
+
       <p>
         <b class="header">0.5.7</b><br />
-        A safer implementation of <tt>_.isArguments</tt>, and a 
-        faster <tt>_.isNumber</tt>,<br />thanks to 
+        A safer implementation of <tt>_.isArguments</tt>, and a
+        faster <tt>_.isNumber</tt>,<br />thanks to
         <a href="http://jedschmidt.com/">Jed Schmidt</a>.
       </p>
-      
+
       <p>
         <b class="header">0.5.6</b><br />
         Customizable delimiters for <tt>_.template</tt>, contributed by
         <a href="http://github.com/iamnoah">Noah Sloan</a>.
       </p>
-      
+
       <p>
         <b class="header">0.5.5</b><br />
         Fix for a bug in MobileSafari's OOP-wrapper, with the arguments object.
       </p>
-      
+
       <p>
         <b class="header">0.5.4</b><br />
-        Fix for multiple single quotes within a template string for 
-        <tt>_.template</tt>. See: 
+        Fix for multiple single quotes within a template string for
+        <tt>_.template</tt>. See:
         <a href="http://www.west-wind.com/Weblog/posts/509108.aspx">Rick Strahl's blog post</a>.
       </p>
-      
+
       <p>
         <b class="header">0.5.2</b><br />
-        New implementations of <tt>isArray</tt>, <tt>isDate</tt>, <tt>isFunction</tt>, 
-        <tt>isNumber</tt>, <tt>isRegExp</tt>, and <tt>isString</tt>, thanks to 
-        a suggestion from 
-        <a href="http://www.broofa.com/">Robert Kieffer</a>. 
+        New implementations of <tt>isArray</tt>, <tt>isDate</tt>, <tt>isFunction</tt>,
+        <tt>isNumber</tt>, <tt>isRegExp</tt>, and <tt>isString</tt>, thanks to
+        a suggestion from
+        <a href="http://www.broofa.com/">Robert Kieffer</a>.
         Instead of doing <tt>Object#toString</tt>
-        comparisons, they now check for expected properties, which is less safe, 
-        but more than an order of magnitude faster. Most other Underscore 
-        functions saw minor speed improvements as a result. 
+        comparisons, they now check for expected properties, which is less safe,
+        but more than an order of magnitude faster. Most other Underscore
+        functions saw minor speed improvements as a result.
         <a href="http://dolzhenko.org/">Evgeniy Dolzhenko</a>
-        contributed <tt>_.tap</tt>, 
-        <a href="http://ruby-doc.org/core-1.9/classes/Object.html#M000191">similar to Ruby 1.9's</a>, 
+        contributed <tt>_.tap</tt>,
+        <a href="http://ruby-doc.org/core-1.9/classes/Object.html#M000191">similar to Ruby 1.9's</a>,
         which is handy for injecting side effects (like logging) into chained calls.
       </p>
-      
+
       <p>
         <b class="header">0.5.1</b><br />
         Added an <tt>_.isArguments</tt> function. Lots of little safety checks
-        and optimizations contributed by 
+        and optimizations contributed by
         <a href="http://github.com/iamnoah/">Noah Sloan</a> and Andri Möll.
       </p>
-      
+
       <p>
         <b class="header">0.5.0</b><br />
-        <b>[API Changes]</b> <tt>_.bindAll</tt> now takes the context object as 
-        its first parameter. If no method names are passed, all of the context 
+        <b>[API Changes]</b> <tt>_.bindAll</tt> now takes the context object as
+        its first parameter. If no method names are passed, all of the context
         object's methods are bound to it, enabling chaining and easier binding.
-        <tt>_.functions</tt> now takes a single argument and returns the names 
+        <tt>_.functions</tt> now takes a single argument and returns the names
         of its Function properties. Calling <tt>_.functions(_)</tt> will get you
         the previous behavior.
         Added <tt>_.isRegExp</tt> so that <tt>isEqual</tt> can now test for RegExp equality.
         All of the "is" functions have been shrunk down into a single definition.
         <a href="http://github.com/grayrest/">Karl Guertin</a> contributed patches.
       </p>
-      
+
       <p>
         <b class="header">0.4.7</b><br />
         Added <tt>isDate</tt>, <tt>isNaN</tt>, and <tt>isNull</tt>, for completeness.
@@ -1175,48 +1174,48 @@ _([1, 2, 3]).value();
         or Dates. <tt>_.keys</tt> is now <small><i><b>25%&ndash;2X</b></i></small> faster (depending on your
         browser) which speeds up the functions that rely on it, such as <tt>_.each</tt>.
       </p>
-      
+
       <p>
         <b class="header">0.4.6</b><br />
-        Added the <tt>range</tt> function, a port of the 
-        <a href="http://docs.python.org/library/functions.html#range">Python 
+        Added the <tt>range</tt> function, a port of the
+        <a href="http://docs.python.org/library/functions.html#range">Python
         function of the same name</a>, for generating flexibly-numbered lists
-        of integers. Original patch contributed by 
+        of integers. Original patch contributed by
         <a href="http://github.com/kylichuku">Kirill Ishanov</a>.
       </p>
-      
+
       <p>
         <b class="header">0.4.5</b><br />
-        Added <tt>rest</tt> for Arrays and arguments objects, and aliased 
+        Added <tt>rest</tt> for Arrays and arguments objects, and aliased
         <tt>first</tt> as <tt>head</tt>, and <tt>rest</tt> as <tt>tail</tt>,
         thanks to <a href="http://github.com/lukesutton/">Luke Sutton</a>'s patches.
         Added tests ensuring that all Underscore Array functions also work on
         <i>arguments</i> objects.
       </p>
-      
+
       <p>
         <b class="header">0.4.4</b><br />
         Added <tt>isString</tt>, and <tt>isNumber</tt>, for consistency. Fixed
-        <tt>_.isEqual(NaN, NaN)</tt> to return <i>true</i> (which is debatable). 
+        <tt>_.isEqual(NaN, NaN)</tt> to return <i>true</i> (which is debatable).
       </p>
-      
+
       <p>
         <b class="header">0.4.3</b><br />
         Started using the native <tt>StopIteration</tt> object in browsers that support it.
         Fixed Underscore setup for CommonJS environments.
       </p>
-      
+
       <p>
         <b class="header">0.4.2</b><br />
         Renamed the unwrapping function to <tt>value</tt>, for clarity.
       </p>
-      
+
       <p>
         <b class="header">0.4.1</b><br />
         Chained Underscore objects now support the Array prototype methods, so
         that you can perform the full range of operations on a wrapped array
         without having to break your chain. Added a <tt>breakLoop</tt> method
-        to <b>break</b> in the middle of any Underscore iteration. Added an 
+        to <b>break</b> in the middle of any Underscore iteration. Added an
         <tt>isEmpty</tt> function that works on arrays and objects.
       </p>
 
@@ -1288,5 +1287,8 @@ _([1, 2, 3]).value();
 
   </div>
 
+  <!-- Include Underscore, so you can play with it in the console. -->
+  <script type="text/javascript" src="underscore.js"></script>
+
 </body>
 </html>
diff --git a/test/objects.js b/test/objects.js
index d93d72616..cf1c7e68c 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -60,6 +60,7 @@ $(document).ready(function() {
     ok(_.isEmpty([]), '[] is empty');
     ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
     ok(_.isEmpty({}), '{} is empty');
+    ok(_.isEmpty(new RegExp('')), 'objects with prototype properties are empty');
     ok(_.isEmpty(null), 'null is empty');
     ok(_.isEmpty(), 'undefined is empty');
 
@@ -102,7 +103,7 @@ $(document).ready(function() {
     ok(_.isArguments(args), 'but the arguments object is an arguments object');
     ok(!_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
     ok(!_.isArguments([1,2,3]), 'and not vanilla arrays.');
-    ok(_.isArguments(iArguments), 'event from another frame');
+    ok(_.isArguments(iArguments), 'even from another frame');
   });
 
   test("objects: isArray", function() {
diff --git a/underscore.js b/underscore.js
index edb159674..8839a5bc4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -67,18 +67,17 @@
   // The cornerstone, an each implementation.
   // Handles objects implementing forEach, arrays, and raw objects.
   // Delegates to JavaScript 1.6's native forEach if available.
-  var each =
-  _.forEach = function(obj, iterator, context) {
+  var each = _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
       if (obj.forEach === nativeForEach) {
         obj.forEach(iterator, context);
       } else if (_.isNumber(obj.length)) {
-        for (var i=0, l=obj.length; i<l; i++) iterator.call(context, obj[i], i, obj);
+        for (var i = 0, l = obj.length; i < l; i++) iterator.call(context, obj[i], i, obj);
       } else {
-        for (var key in obj)
-          if (hasOwnProperty.call(obj, key))
-            iterator.call(context, obj[key], key, obj);
+        for (var key in obj) {
+          if (hasOwnProperty.call(obj, key)) iterator.call(context, obj[key], key, obj);
+        }
       }
     } catch(e) {
       if (e != breaker) throw e;
@@ -339,7 +338,7 @@
     var args = _.toArray(arguments);
     var length = _.max(_.pluck(args, 'length'));
     var results = new Array(length);
-    for (var i=0; i<length; i++) results[i] = _.pluck(args, String(i));
+    for (var i = 0; i < length; i++) results[i] = _.pluck(args, String(i));
     return results;
   };
 
@@ -349,7 +348,7 @@
   // Delegates to JavaScript 1.8's native indexOf if available.
   _.indexOf = function(array, item) {
     if (array.indexOf === nativeIndexOf) return array.indexOf(item);
-    for (var i=0, l=array.length; i<l; i++) if (array[i] === item) return i;
+    for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;
   };
 
@@ -513,7 +512,7 @@
   // Is a given array or object empty?
   _.isEmpty = function(obj) {
     if (_.isArray(obj)) return obj.length === 0;
-    for (var k in obj) return false;
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
     return true;
   };
 
@@ -588,11 +587,9 @@
     return value;
   };
 
-  // run a function n times.
-  // looks good in wrapper form:
-  //    _(3).times(alert)
-  _.times = function (n, fn, context) {
-    for (var i = 0; i < n; i++) fn.call(context, i);
+  // Run a function n times.
+  _.times = function (n, iterator, context) {
+    for (var i = 0; i < n; i++) iterator.call(context, i);
   };
 
   // Break out of the middle of an iteration.

From 412d2e4486a85f29fe2747f4e6a1da3ac0e182d6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:47:40 -0500
Subject: [PATCH 150/533] avoiding isFunction in _.include

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 8839a5bc4..1ddd106aa 100644
--- a/underscore.js
+++ b/underscore.js
@@ -172,7 +172,7 @@
 
   // Determine if a given value is included in the array or object using '==='.
   _.include = function(obj, target) {
-    if (obj && _.isFunction(obj.indexOf)) return _.indexOf(obj, target) != -1;
+    if (obj && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     return !! _.detect(obj, function(value) {
       return value === target;
     });

From d7acbca2ce84d76549b7a23d510238ea1812d75d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:53:35 -0500
Subject: [PATCH 151/533] reverted _.buildLookup, restoring _.without to it's
 previous implementation, adding a test for object identity

---
 test/arrays.js      |  4 ++++
 test/collections.js |  7 -------
 test/objects.js     |  2 +-
 underscore.js       | 22 ++--------------------
 4 files changed, 7 insertions(+), 28 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 9eb8dac54..4b74ecade 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -46,6 +46,10 @@ $(document).ready(function() {
     equals(_.without(list, 0, 1).join(', '), '2, 3, 4', 'can remove all instances of an object');
     var result = (function(){ return _.without(arguments, 0, 1); })(1, 2, 1, 0, 3, 1, 4);
     equals(result.join(', '), '2, 3, 4', 'works on an arguments object');
+
+    var list = [{one : 1}, {two : 2}];
+    ok(_.without(list, {one : 1}).length == 2, 'uses real object identity for comparisons.');
+    ok(_.without(list, list[0]).length == 1, 'ditto.');
   });
 
   test("arrays: uniq", function() {
diff --git a/test/collections.js b/test/collections.js
index 516dbf334..3759a6495 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -164,12 +164,5 @@ $(document).ready(function() {
   test('collections: size', function() {
     equals(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
   });
-  
-  test('collections: buildLookup', function() {
-    same(_.buildLookup([1,'hi']), {1:true, 'hi':true}, 'defaults values to true');
-    same(_.buildLookup([1,'hi'], 1), {1:1, 'hi':1}, 'can override value');
-    same(_.buildLookup({5:'five'}), {five: true}, 'making a map from an object uses its values');
-  });
-  
 
 });
diff --git a/test/objects.js b/test/objects.js
index cf1c7e68c..ac56c495f 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -11,7 +11,7 @@ $(document).ready(function() {
   });
 
   test("objects: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "buildLookup", "clone", "compact",
+    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
diff --git a/underscore.js b/underscore.js
index 1ddd106aa..75d4fdcb9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -252,24 +252,6 @@
     return _.toArray(obj).length;
   };
 
-  // Build a lookup map from a collection.
-  // Pay a little memory upfront to make searching a collection for a
-  // value faster later
-  // e.g:
-  //
-  //  var lookup = _.buildLookup([1,2,8])  // {1: true, 2: true, 8: true}
-  //  lookup[key]   // instead of: _.include(array, key)
-  //
-  // See example usage in #without
-  // By default sets the value to true, can pass in a value to use instead
-  _.buildLookup = function (obj, useValue) {
-    useValue = (useValue === undefined)?  true :  useValue;
-    return _.reduce(obj, {}, function (memo, value) {
-      memo[value] = useValue;
-      return memo;
-    });
-  };
-
   // -------------------------- Array Functions: ------------------------------
 
   // Get the first element of an array. Passing "n" will return the first N
@@ -308,8 +290,8 @@
 
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
-    var lookup = _.buildLookup(_.rest(arguments));
-    return _.filter(array, function(value){ return !lookup[value]; });
+    var values = _.rest(arguments);
+    return _.select(array, function(value){ return !_.include(values, value); });
   };
 
   // Produce a duplicate-free version of the array. If the array has already

From 65d2c30312b9525f323d47ae6bab6bc3204b0230 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 12:57:26 -0500
Subject: [PATCH 152/533] don't use root as the default 'this' for a bound
 function, use an empty object instead.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 75d4fdcb9..42770faeb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -366,7 +366,7 @@
   _.bind = function(func, obj) {
     var args = _.rest(arguments, 2);
     return function() {
-      return func.apply(obj || root, args.concat(_.toArray(arguments)));
+      return func.apply(obj || {}, args.concat(_.toArray(arguments)));
     };
   };
 

From c23b2ce717ea053ea15ed173ae47b5c2d6726702 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 13:09:08 -0500
Subject: [PATCH 153/533] added documentation for _.times

---
 index.html | 109 +++++++++++++++++++++++++++++------------------------
 1 file changed, 60 insertions(+), 49 deletions(-)

diff --git a/index.html b/index.html
index 66aea7125..7afa8c91c 100644
--- a/index.html
+++ b/index.html
@@ -121,54 +121,9 @@
       </table>
     </p>
 
-    <h2 id="styles">Object-Oriented and Functional Styles</h2>
-
-    <p>
-      You can use Underscore in either an object-oriented or a functional style,
-      depending on your preference. The following two lines of code are
-      identical ways to double a list of numbers.
-    </p>
-
-    <pre>
-_.map([1, 2, 3], function(n){ return n * 2; });
-_([1, 2, 3]).map(function(n){ return n * 2; });</pre>
-
-    <p>
-      Using the object-oriented style allows you to chain together methods. Calling
-      <tt>chain</tt> on a wrapped object will cause all future method calls to
-      return wrapped objects as well. When you've finished the computation,
-      use <tt>value</tt> to retrieve the final value. Here's an example of chaining
-      together a <b>map/flatten/reduce</b>, in order to get the word count of
-      every word in a song.
-    </p>
-
-<pre>
-var lyrics = [
-  {line : 1, words : "I'm a lumberjack and I'm okay"},
-  {line : 2, words : "I sleep all night and I work all day"},
-  {line : 3, words : "He's a lumberjack and he's okay"},
-  {line : 4, words : "He sleeps all night and he works all day"}
-];
-
-_(lyrics).chain()
-  .map(function(line) { return line.words.split(' '); })
-  .flatten()
-  .reduce({}, function(counts, word) {
-    counts[word] = (counts[word] || 0) + 1;
-    return counts;
-}).value();
-
-=&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
-
-    <p>
-      In addition, the
-      <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/Array">Array prototype's methods</a>
-      are proxied through the chained Underscore object, so you can slip a
-      <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to
-      modify the array.
-    </p>
-
     <h2>Table of Contents</h2>
+    
+    <a href="#styles">Object-Oriented and Functional Styles</a>
 
     <p>
       <b>Collections</b>
@@ -217,8 +172,9 @@ _(lyrics).chain()
       <b>Utility</b>
       <br />
       <span class="methods"><a href="#noConflict">noConflict</a>,
-      <a href="#identity">identity</a>, <a href="#breakLoop">breakLoop</a></span>,
-      <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
+      <a href="#identity">identity</a>, <a href="#times">times</a>, 
+      <a href="#breakLoop">breakLoop</a></span>, <a href="#uniqueId">uniqueId</a>, 
+      <a href="#template">template</a></span>
     </p>
 
     <p>
@@ -228,6 +184,53 @@ _(lyrics).chain()
     </p>
 
     <div id="documentation">
+      
+      <h2 id="styles">Object-Oriented and Functional Styles</h2>
+
+      <p>
+        You can use Underscore in either an object-oriented or a functional style,
+        depending on your preference. The following two lines of code are
+        identical ways to double a list of numbers.
+      </p>
+
+    <pre>
+_.map([1, 2, 3], function(n){ return n * 2; });
+_([1, 2, 3]).map(function(n){ return n * 2; });</pre>
+
+      <p>
+        Using the object-oriented style allows you to chain together methods. Calling
+        <tt>chain</tt> on a wrapped object will cause all future method calls to
+        return wrapped objects as well. When you've finished the computation,
+        use <tt>value</tt> to retrieve the final value. Here's an example of chaining
+        together a <b>map/flatten/reduce</b>, in order to get the word count of
+        every word in a song.
+      </p>
+
+<pre>
+var lyrics = [
+  {line : 1, words : "I'm a lumberjack and I'm okay"},
+  {line : 2, words : "I sleep all night and I work all day"},
+  {line : 3, words : "He's a lumberjack and he's okay"},
+  {line : 4, words : "He sleeps all night and he works all day"}
+];
+
+_(lyrics).chain()
+  .map(function(line) { return line.words.split(' '); })
+  .flatten()
+  .reduce({}, function(counts, word) {
+    counts[word] = (counts[word] || 0) + 1;
+    return counts;
+}).value();
+
+=&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
+
+      <p>
+        In addition, the
+        <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/Array">Array prototype's methods</a>
+        are proxied through the chained Underscore object, so you can slip a
+        <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to
+        modify the array.
+      </p>
 
       <h2>Collection Functions (Arrays or Objects)</h2>
 
@@ -955,6 +958,14 @@ var moe = {name : 'moe'};
 moe === _.identity(moe);
 =&gt; true</pre>
 
+      <p id="times">
+        <b class="header">times</b><code>_.times(n, iterator)</code>
+        <br />
+        Invokes the given iterator function <b>n</b> times.
+      </p>
+      <pre>
+_(3).times(function(){ genie.grantWish(); });</pre>
+
       <p id="breakLoop">
         <b class="header">breakLoop</b><code>_.breakLoop()</code>
         <br />

From d855def4386f2b54d97997d4e8880bdf5834fff8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 13:44:46 -0500
Subject: [PATCH 154/533] adding an _.mixin utility function that allows you to
 add functions to Underscore (also used internally)

---
 test/objects.js |  2 +-
 test/utility.js | 13 +++++++++++--
 underscore.js   | 30 ++++++++++++++++++++----------
 3 files changed, 32 insertions(+), 13 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index ac56c495f..e45633e8c 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -16,7 +16,7 @@ $(document).ready(function() {
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "methods", "min", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
+    "methods", "min", "mixin", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     same(expected, _.methods(_), 'provides a sorted list of functions');
diff --git a/test/utility.js b/test/utility.js
index 1b365d2be..c9498c227 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -29,7 +29,7 @@ $(document).ready(function() {
     while(i++ < 100) ids.push(_.uniqueId());
     equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
-  
+
   test("utility: times", function() {
     var vals = [];
     _.times(3, function (i) { vals.push(i); });
@@ -39,7 +39,16 @@ $(document).ready(function() {
     _(3).times(function (i) { vals.push(i); });
     ok(_.isEqual(vals, [0,1,2]), "works as a wrapper");
   });
-  
+
+  test("utility: mixin", function() {
+    _.mixin({
+      myReverse: function(string) {
+        return string.split('').reverse().join('');
+      }
+    });
+    equals(_.myReverse('panacea'), 'aecanap', 'mixed in a function to _');
+    equals(_('champ').myReverse(), 'pmahc', 'mixed in a function to the OOP wrapper');
+  });
 
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
diff --git a/underscore.js b/underscore.js
index 42770faeb..87034bd2e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -31,7 +31,7 @@
       hasOwnProperty        = ObjProto.hasOwnProperty,
       propertyIsEnumerable  = ObjProto.propertyIsEnumerable;
 
-  // All native implementations we hope to use are declared here.
+  // All ECMA5 native implementations we hope to use are declared here.
   var
     nativeForEach      = ArrayProto.forEach,
     nativeMap          = ArrayProto.map,
@@ -50,6 +50,15 @@
   // underscore functions. Wrapped objects may be chained.
   var wrapper = function(obj) { this._wrapped = obj; };
 
+  // A method to easily add functions to the OOP wrapper.
+  var addToWrapper = function(name, func) {
+    wrapper.prototype[name] = function() {
+      var args = _.toArray(arguments);
+      unshift.call(args, this._wrapped);
+      return result(func.apply(_, args), this._chain);
+    };
+  };
+
   // Create a safe reference to the Underscore object for reference below.
   var _ = function(obj) { return new wrapper(obj); };
 
@@ -431,7 +440,7 @@
     return _.map(obj, _.identity);
   };
 
-  // Return a sorted list of the function names available in Underscore.
+  // Return a sorted list of the function names available on the object.
   _.functions = function(obj) {
     return _.select(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
@@ -579,6 +588,14 @@
     throw breaker;
   };
 
+  // Add your own custom functions to the Underscore object, ensuring that
+  // they're correctly added to the OOP wrapper as well.
+  _.mixin = function(obj) {
+    _.each(_.functions(obj), function(name){
+      addToWrapper(name, _[name] = obj[name]);
+    });
+  };
+
   // Generate a unique integer id (unique within the entire client session).
   // Useful for temporary DOM ids.
   var idCounter = 0;
@@ -634,14 +651,7 @@
   };
 
   // Add all of the Underscore functions to the wrapper object.
-  each(_.functions(_), function(name) {
-    var method = _[name];
-    wrapper.prototype[name] = function() {
-      var args = _.toArray(arguments);
-      unshift.call(args, this._wrapped);
-      return result(method.apply(_, args), this._chain);
-    };
-  });
+  _.mixin(_);
 
   // Add all mutator Array functions to the wrapper.
   each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {

From 85d8f90bca46a7f1d79f60211198602f6dc86001 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 13:49:57 -0500
Subject: [PATCH 155/533] move the OOP-setup bits down into that section for
 clarity. JavaScript allows this it's pre-declaration pass.

---
 underscore.js | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/underscore.js b/underscore.js
index 87034bd2e..87455c6d4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -45,20 +45,6 @@
     nativeIsArray      = Array.isArray,
     nativeKeys         = Object.keys;
 
-  // If Underscore is called as a function, it returns a wrapped object that
-  // can be used OO-style. This wrapper holds altered versions of all the
-  // underscore functions. Wrapped objects may be chained.
-  var wrapper = function(obj) { this._wrapped = obj; };
-
-  // A method to easily add functions to the OOP wrapper.
-  var addToWrapper = function(name, func) {
-    wrapper.prototype[name] = function() {
-      var args = _.toArray(arguments);
-      unshift.call(args, this._wrapped);
-      return result(func.apply(_, args), this._chain);
-    };
-  };
-
   // Create a safe reference to the Underscore object for reference below.
   var _ = function(obj) { return new wrapper(obj); };
 
@@ -645,11 +631,25 @@
 
   // ------------------------ Setup the OOP Wrapper: --------------------------
 
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
+
   // Helper function to continue chaining intermediate results.
   var result = function(obj, chain) {
     return chain ? _(obj).chain() : obj;
   };
 
+  // A method to easily add functions to the OOP wrapper.
+  var addToWrapper = function(name, func) {
+    wrapper.prototype[name] = function() {
+      var args = _.toArray(arguments);
+      unshift.call(args, this._wrapped);
+      return result(func.apply(_, args), this._chain);
+    };
+  };
+
   // Add all of the Underscore functions to the wrapper object.
   _.mixin(_);
 

From 513f878482a2213919cf10ef2965a82e423fa465 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 13:58:16 -0500
Subject: [PATCH 156/533] it's now 2010, and adding a list of contributors
 (everyone who's ever gotten a patch in)

---
 LICENSE |  2 +-
 README  | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/LICENSE b/LICENSE
index 9644b34c3..d8cef485e 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2009 Jeremy Ashkenas, DocumentCloud
+Copyright (c) 2010 Jeremy Ashkenas, DocumentCloud
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
diff --git a/README b/README
index e41015cd7..fefa78d74 100644
--- a/README
+++ b/README
@@ -15,3 +15,16 @@ in JavaScript objects. It's the tie to go along with jQuery's tux.
 
 For Docs, License, Tests, and pre-packed downloads, see:
 http://documentcloud.github.com/underscore/
+
+Many thanks to our contributors:
+
+  Dmitry Baranovskiy
+  Tim Caswell
+  Mathieu D'Amours
+  Rick Fletcher
+  Mike Frawley
+  Kirill Ishanov
+  Kris Kowal
+  Jed Schmidt
+  Noah Sloan
+  Luke Sutton

From 8d632ada0b114f908496df8e0fb4deaecb6245ba Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 14:04:33 -0500
Subject: [PATCH 157/533] added documentation for _.mixin

---
 index.html | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 7afa8c91c..808756688 100644
--- a/index.html
+++ b/index.html
@@ -173,8 +173,8 @@
       <br />
       <span class="methods"><a href="#noConflict">noConflict</a>,
       <a href="#identity">identity</a>, <a href="#times">times</a>, 
-      <a href="#breakLoop">breakLoop</a></span>, <a href="#uniqueId">uniqueId</a>, 
-      <a href="#template">template</a></span>
+      <a href="#breakLoop">breakLoop</a></span>, <a href="#mixin">mixin</a></span>, 
+      <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
     </p>
 
     <p>
@@ -982,6 +982,23 @@ _.each([1, 2, 3], function(num) {
 result;
 =&gt; 2</pre>
 
+      <p id="mixin">
+        <b class="header">mixin</b><code>_.mixin(object)</code>
+        <br />
+        Allows you to extend Underscore with your own utility functions. Pass
+        a hash of <tt>{name: function}</tt> definitions to have your functions 
+        added to the Underscore object, as well as the OOP wrapper.
+      </p>
+      <pre>
+_.mixin({
+  capitalize : function(string) {
+    return string.charAt(0).toUpperCase() + string.substring(1).toLowerCase();
+  }
+});
+_("fabio").capitalize();
+=&gt; "Fabio"
+</pre>
+
       <p id="uniqueId">
         <b class="header">uniqueId</b><code>_.uniqueId([prefix])</code>
         <br />

From 71b6e4f55504375caf2ac3ce29ebb3042cd72419 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 15:01:51 -0500
Subject: [PATCH 158/533] A whole slew of IE fixes and safety guards.

---
 underscore.js | 44 ++++++++++++++++++++++++--------------------
 1 file changed, 24 insertions(+), 20 deletions(-)

diff --git a/underscore.js b/underscore.js
index 87455c6d4..ffacf6b30 100644
--- a/underscore.js
+++ b/underscore.js
@@ -65,7 +65,7 @@
   var each = _.forEach = function(obj, iterator, context) {
     var index = 0;
     try {
-      if (obj.forEach === nativeForEach) {
+      if (nativeForEach && obj.forEach === nativeForEach) {
         obj.forEach(iterator, context);
       } else if (_.isNumber(obj.length)) {
         for (var i = 0, l = obj.length; i < l; i++) iterator.call(context, obj[i], i, obj);
@@ -83,7 +83,7 @@
   // Return the results of applying the iterator to each element.
   // Delegates to JavaScript 1.6's native map if available.
   _.map = function(obj, iterator, context) {
-    if (obj.map === nativeMap) return obj.map(iterator, context);
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       results.push(iterator.call(context, value, index, list));
@@ -94,7 +94,7 @@
   // Reduce builds up a single result from a list of values, aka inject, or foldl.
   // Delegates to JavaScript 1.8's native reduce if available.
   _.reduce = function(obj, memo, iterator, context) {
-    if (obj.reduce === nativeReduce) return obj.reduce(_.bind(iterator, context), memo);
+    if (nativeReduce && obj.reduce === nativeReduce) return obj.reduce(_.bind(iterator, context), memo);
     each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
@@ -104,9 +104,9 @@
   // The right-associative version of reduce, also known as foldr. Uses
   // Delegates to JavaScript 1.8's native reduceRight if available.
   _.reduceRight = function(obj, memo, iterator, context) {
-    if (obj.reduceRight === nativeReduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
     var reversed = _.clone(_.toArray(obj)).reverse();
-    return reduce(reversed, memo, iterator, context);
+    return _.reduce(reversed, memo, iterator, context);
   };
 
   // Return the first value which passes a truth test.
@@ -124,7 +124,7 @@
   // Return all the elements that pass a truth test.
   // Delegates to JavaScript 1.6's native filter if available.
   _.filter = function(obj, iterator, context) {
-    if (obj.filter === nativeFilter) return obj.filter(iterator, context);
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
       iterator.call(context, value, index, list) && results.push(value);
@@ -145,7 +145,7 @@
   // Delegates to JavaScript 1.6's native every if available.
   _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.every === nativeEvery) return obj.every(iterator, context);
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
@@ -157,7 +157,7 @@
   // Delegates to JavaScript 1.6's native some if available.
   _.some = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (obj.some === nativeSome) return obj.some(iterator, context);
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
     each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) _.breakLoop();
@@ -167,10 +167,12 @@
 
   // Determine if a given value is included in the array or object using '==='.
   _.include = function(obj, target) {
-    if (obj && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
-    return !! _.detect(obj, function(value) {
-      return value === target;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    var found = false;
+    each(obj, function(value) {
+      if (found = value === target) _.breakLoop();
     });
+    return found;
   };
 
   // Invoke a method with arguments on every item in a collection.
@@ -271,7 +273,7 @@
 
   // Trim out all falsy values from an array.
   _.compact = function(array) {
-    return _.select(array, function(value){ return !!value; });
+    return _.filter(array, function(value){ return !!value; });
   };
 
   // Return a completely flattened version of an array.
@@ -286,7 +288,7 @@
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
     var values = _.rest(arguments);
-    return _.select(array, function(value){ return !_.include(values, value); });
+    return _.filter(array, function(value){ return !_.include(values, value); });
   };
 
   // Produce a duplicate-free version of the array. If the array has already
@@ -302,8 +304,8 @@
   // passed-in arrays.
   _.intersect = function(array) {
     var rest = _.rest(arguments);
-    return _.select(_.uniq(array), function(item) {
-      return _.all(rest, function(other) {
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
         return _.indexOf(other, item) >= 0;
       });
     });
@@ -324,7 +326,7 @@
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to JavaScript 1.8's native indexOf if available.
   _.indexOf = function(array, item) {
-    if (array.indexOf === nativeIndexOf) return array.indexOf(item);
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
     for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;
   };
@@ -332,7 +334,7 @@
 
   // Delegates to JavaScript 1.6's native lastIndexOf if available.
   _.lastIndexOf = function(array, item) {
-    if (array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
     while (i--) if (array[i] === item) return i;
     return -1;
@@ -428,7 +430,7 @@
 
   // Return a sorted list of the function names available on the object.
   _.functions = function(obj) {
-    return _.select(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
+    return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
 
   // Extend a given object with all of the properties in a source object.
@@ -577,7 +579,7 @@
   // Add your own custom functions to the Underscore object, ensuring that
   // they're correctly added to the OOP wrapper as well.
   _.mixin = function(obj) {
-    _.each(_.functions(obj), function(name){
+    each(_.functions(obj), function(name){
       addToWrapper(name, _[name] = obj[name]);
     });
   };
@@ -601,13 +603,15 @@
   // JavaScript templating a-la ERB, pilfered from John Resig's
   // "Secrets of the JavaScript Ninja", page 83.
   // Single-quote fix from Rick Strahl's version.
+  // With alterations for arbitrary delimiters.
   _.template = function(str, data) {
     var c  = _.templateSettings;
+    var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
     var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
-         .replace(new RegExp("'(?=[^"+c.end[0]+"]*"+escapeRegExp(c.end)+")","g"),"\t")
+         .replace(endMatch,"\t")
          .split("'").join("\\'")
          .split("\t").join("'")
          .replace(c.interpolate, "',$1,'")

From b8a633a5fd0e40a9897db57fcb04c92be7baee46 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 15:10:40 -0500
Subject: [PATCH 159/533] Underscore 0.6 is on the books. Think of it as a
 pre-release of 1.0

---
 index.html        | 16 +++++++++++++---
 underscore-min.js | 34 +++++++++++++++++-----------------
 underscore.js     |  2 +-
 3 files changed, 31 insertions(+), 21 deletions(-)

diff --git a/index.html b/index.html
index 808756688..d89934902 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.5.8)</a></td>
-          <td><i>22kb, Uncompressed with Comments</i></td>
+          <td><a href="underscore.js">Development Version (0.6.0)</a></td>
+          <td><i>25kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.5.8)</a></td>
+          <td><a href="underscore-min.js">Production Version (0.6.0)</a></td>
           <td><i>3kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1124,6 +1124,16 @@ _([1, 2, 3]).value();
       </p>
 
       <h2>Change Log</h2>
+      
+      <p>
+        <b class="header">0.6.0</b><br />
+        Major release. Incorporates a number of Mile Frawley's refactors for
+        safer duck-typing on collection functions, and cleaner internals. A new
+        <tt>_.mixin</tt> method that allows you to extend Underscore with utility
+        functions of your own. <tt>_.times</tt>, which works the same as in 
+        Ruby or Prototype.js. Native support for ECMAScript 5's <tt>Array.isArray</tt>, 
+        and <tt>Object.keys</tt>.
+      </p>
 
       <p>
         <b class="header">0.5.8</b><br />
diff --git a/underscore-min.js b/underscore-min.js
index b850fcac3..39d4a2667 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,17 +1,17 @@
-(function(){var j=this,n=j._,i=function(a){this._wrapped=a},m=typeof StopIteration!=="undefined"?StopIteration:"__break__",b=j._=function(a){return new i(a)};if(typeof exports!=="undefined")exports._=b;var k=Array.prototype.slice,o=Array.prototype.unshift,p=Object.prototype.toString,q=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable;b.VERSION="0.5.8";b.each=function(a,c,d){try{if(a.forEach)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],
-e,a);else{var g=b.keys(a);f=g.length;for(e=0;e<f;e++)c.call(d,a[g[e]],g[e],a)}}catch(h){if(h!=m)throw h;}return a};b.map=function(a,c,d){if(a&&b.isFunction(a.map))return a.map(c,d);var e=[];b.each(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(a&&b.isFunction(a.reduce))return a.reduce(b.bind(d,e),c);b.each(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(a&&b.isFunction(a.reduceRight))return a.reduceRight(b.bind(d,e),c);var f=
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diff --git a/underscore.js b/underscore.js
index ffacf6b30..19e372da5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '0.5.8';
+  _.VERSION = '0.6.0';
 
   // ------------------------ Collection Functions: ---------------------------
 

From c519889a45f1c014a793c14d9d16cf482e458858 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 24 Feb 2010 15:16:20 -0500
Subject: [PATCH 160/533] Changelog bump.

---
 index.html | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index d89934902..1bb85a5ca 100644
--- a/index.html
+++ b/index.html
@@ -1127,10 +1127,11 @@ _([1, 2, 3]).value();
       
       <p>
         <b class="header">0.6.0</b><br />
-        Major release. Incorporates a number of Mile Frawley's refactors for
+        Major release. Incorporates a number of 
+        <a href="http://github.com/ratbeard">Mile Frawley's</a> refactors for
         safer duck-typing on collection functions, and cleaner internals. A new
         <tt>_.mixin</tt> method that allows you to extend Underscore with utility
-        functions of your own. <tt>_.times</tt>, which works the same as in 
+        functions of your own. Added <tt>_.times</tt>, which works the same as in 
         Ruby or Prototype.js. Native support for ECMAScript 5's <tt>Array.isArray</tt>, 
         and <tt>Object.keys</tt>.
       </p>

From d1ccc1e841ca982037d2207fb283f674caa9e22a Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Fri, 26 Feb 2010 08:47:36 -0600
Subject: [PATCH 161/533] remove unused index variable in forEach

---
 underscore.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 19e372da5..f6d68a690 100644
--- a/underscore.js
+++ b/underscore.js
@@ -63,7 +63,6 @@
   // Handles objects implementing forEach, arrays, and raw objects.
   // Delegates to JavaScript 1.6's native forEach if available.
   var each = _.forEach = function(obj, iterator, context) {
-    var index = 0;
     try {
       if (nativeForEach && obj.forEach === nativeForEach) {
         obj.forEach(iterator, context);

From bd271e4794c4ffa0fe5716f77a54bdef99a6af05 Mon Sep 17 00:00:00 2001
From: John Wright <mrjjwright@gmail.com>
Date: Fri, 26 Feb 2010 21:46:58 -0700
Subject: [PATCH 162/533] added _.isBoolean function

---
 test/objects.js | 13 +++++++++++++
 underscore.js   |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index e45633e8c..45ca838d9 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -85,6 +85,7 @@ $(document).ready(function() {
       parent.iRegExp    = /hi/;\
       parent.iNaN       = NaN;\
       parent.iNull      = null;\
+	  parent.iBoolean   = false;\
       parent.iUndefined = undefined;\
     </script>"
   );
@@ -128,6 +129,18 @@ $(document).ready(function() {
     ok(_.isNumber(iNumber), 'even from another frame');
   });
 
+  test("objects: isBoolean", function() {
+    ok(!_.isBoolean(2), 'a number is not a boolean');
+   	ok(!_.isBoolean("string"), 'a string is not a boolean');
+    ok(!_.isBoolean("false"), 'the string "false" is not a boolean');
+    ok(!_.isBoolean("true"), 'the string "true" is not a boolean');
+    ok(!_.isBoolean(arguments), 'the arguments object is not a boolean');
+    ok(!_.isBoolean(undefined), 'undefined is not a boolean');
+    ok(_.isBoolean(true), 'but true is');
+    ok(_.isBoolean(false), 'and so is false');
+    ok(_.isBoolean(iBoolean), 'even from another frame');
+  });
+
   test("objects: isFunction", function() {
     ok(!_.isFunction([1, 2, 3]), 'arrays are not functions');
     ok(!_.isFunction('moe'), 'strings are not functions');
diff --git a/underscore.js b/underscore.js
index f6d68a690..ff956bc53 100644
--- a/underscore.js
+++ b/underscore.js
@@ -525,6 +525,11 @@
     return (obj === +obj) || (toString.call(obj) === '[object Number]');
   };
 
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return (toString.call(obj) === '[object Boolean]');
+  };
+
   // Is a given value a date?
   _.isDate = function(obj) {
     return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);

From 9903905175b1178e1c6dcf05c1ee569cee087240 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sat, 27 Feb 2010 00:03:36 -0500
Subject: [PATCH 163/533] merging mrjjwright's isBoolean, with tests, docs, and
 credit

---
 README          |  1 +
 index.html      | 12 +++++++++++-
 test/objects.js |  4 +++-
 underscore.js   |  2 +-
 4 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/README b/README
index fefa78d74..333b13f45 100644
--- a/README
+++ b/README
@@ -28,3 +28,4 @@ Many thanks to our contributors:
   Jed Schmidt
   Noah Sloan
   Luke Sutton
+  John Wright
diff --git a/index.html b/index.html
index 1bb85a5ca..3ac282394 100644
--- a/index.html
+++ b/index.html
@@ -162,7 +162,7 @@
       <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#clone">clone</a>, <a href="#tap">tap</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
-      <a href="#isNumber">isNumber</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
+      <a href="#isNumber">isNumber</a>, <a href="#isBoolean">isBoolean</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
       <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>,
       <a href="#isUndefined">isUndefined</a>
       </span>
@@ -874,6 +874,16 @@ _.isFunction("moe");
       <pre>
 _.isNumber(8.4 * 5);
 =&gt; true
+</pre>
+
+      <p id="isBoolean">
+        <b class="header">isBoolean</b><code>_.isBoolean(object)</code>
+        <br />
+        Returns <i>true</i> if <b>object</b> is either <i>true</i> or <i>false</i>.
+      </p>
+      <pre>
+_.isBoolean(null);
+=&gt; false
 </pre>
 
       <p id="isDate">
diff --git a/test/objects.js b/test/objects.js
index 45ca838d9..b49563f9d 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -14,7 +14,7 @@ $(document).ready(function() {
     var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
     "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
-    "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isDate", "isElement", "isEmpty", "isEqual",
+    "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isBoolean", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "methods", "min", "mixin", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
@@ -136,6 +136,8 @@ $(document).ready(function() {
     ok(!_.isBoolean("true"), 'the string "true" is not a boolean');
     ok(!_.isBoolean(arguments), 'the arguments object is not a boolean');
     ok(!_.isBoolean(undefined), 'undefined is not a boolean');
+    ok(!_.isBoolean(NaN), 'NaN is not a boolean');
+    ok(!_.isBoolean(null), 'null is not a boolean');
     ok(_.isBoolean(true), 'but true is');
     ok(_.isBoolean(false), 'and so is false');
     ok(_.isBoolean(iBoolean), 'even from another frame');
diff --git a/underscore.js b/underscore.js
index ff956bc53..1c6f6fb20 100644
--- a/underscore.js
+++ b/underscore.js
@@ -527,7 +527,7 @@
 
   // Is a given value a boolean?
   _.isBoolean = function(obj) {
-    return (toString.call(obj) === '[object Boolean]');
+    return obj === true || obj === false;
   };
 
   // Is a given value a date?

From 8c6694c2426b11ccbf7ae9ddc1cacefe45545454 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 5 Mar 2010 15:24:53 -0500
Subject: [PATCH 164/533] comment grammar

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 1c6f6fb20..e57d45bac 100644
--- a/underscore.js
+++ b/underscore.js
@@ -45,7 +45,7 @@
     nativeIsArray      = Array.isArray,
     nativeKeys         = Object.keys;
 
-  // Create a safe reference to the Underscore object for reference below.
+  // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
   // Export the Underscore object for CommonJS.
@@ -209,7 +209,7 @@
     return result.value;
   };
 
-  // Sort the object's values by a criteria produced by an iterator.
+  // Sort the object's values by a criterion produced by an iterator.
   _.sortBy = function(obj, iterator, context) {
     return _.pluck(_.map(obj, function(value, index, list) {
       return {

From 4085b68be458cd401ab82721d409771b9ee4ab5e Mon Sep 17 00:00:00 2001
From: Mike Frawley <frawl021@gmail.com>
Date: Sun, 24 Jan 2010 11:53:30 -0600
Subject: [PATCH 165/533] enhance #extend to allow taking multiple source
 objects.

This is done in jquery, extjs, and others as well.

added tests, no docs
---
 test/objects.js | 11 ++++++++---
 underscore.js   | 11 +++++++----
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index b49563f9d..a30b30e94 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -25,9 +25,14 @@ $(document).ready(function() {
   });
 
   test("objects: extend", function() {
-    var source = {name : 'moe'}, dest = {age : 50};
-    _.extend(dest, source);
-    equals(dest.name, 'moe', 'can extend an object with the attributes of another');
+    var result;
+    equals(_.extend({}, {a:'b'}).a, 'b', 'can extend an object with the attributes of another');
+    equals(_.extend({a:'x'}, {a:'b'}).a, 'b', 'properties in source override destination');
+    equals(_.extend({x:'x'}, {a:'b'}).x, 'x', 'properties not in source dont get overriden');
+    result = _.extend({x:'x'}, {a:'a'}, {b:'b'});
+    ok(_.isEqual(result, {x:'x', a:'a', b:'b'}), 'can extend from multiple source objects');
+    result = _.extend({x:'x'}, {a:'a', x:2}, {a:'b'});
+    ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
   });
 
   test("objects: clone", function() {
diff --git a/underscore.js b/underscore.js
index e57d45bac..0a31cea03 100644
--- a/underscore.js
+++ b/underscore.js
@@ -432,10 +432,13 @@
     return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
 
-  // Extend a given object with all of the properties in a source object.
-  _.extend = function(destination, source) {
-    for (var property in source) destination[property] = source[property];
-    return destination;
+  // Extend a given object with all the properties in given object(s)
+  _.extend = function(obj) {
+    var prop;
+    each(_.rest(arguments), function (source) {
+      for (prop in source) obj[prop] = source[prop];  
+    });
+    return obj;
   };
 
   // Create a (shallow-cloned) duplicate of an object.

From d69c5ae83b2ec54c40138db772e029eb41fda985 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 5 Mar 2010 15:29:32 -0500
Subject: [PATCH 166/533] merging ratbeard's patch for allowing multiple
 arguments to be passed to extend, with docs

---
 index.html    | 7 ++++---
 underscore.js | 7 +++----
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/index.html b/index.html
index 3ac282394..97cd8e031 100644
--- a/index.html
+++ b/index.html
@@ -748,10 +748,11 @@ _.functions(_);
 </pre>
 
       <p id="extend">
-        <b class="header">extend</b><code>_.extend(destination, source)</code>
+        <b class="header">extend</b><code>_.extend(destination, *sources)</code>
         <br />
-        Copy all of the properties in the <b>source</b> object over to the
-        <b>destination</b> object.
+        Copy all of the properties in the <b>source</b> objects over to the
+        <b>destination</b> object. It's in-order, to the last source will override
+        properties of the same name in previous arguments.
       </p>
       <pre>
 _.extend({name : 'moe'}, {age : 50});
diff --git a/underscore.js b/underscore.js
index 0a31cea03..1d835f357 100644
--- a/underscore.js
+++ b/underscore.js
@@ -432,11 +432,10 @@
     return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
 
-  // Extend a given object with all the properties in given object(s)
+  // Extend a given object with all the properties in passed-in object(s).
   _.extend = function(obj) {
-    var prop;
-    each(_.rest(arguments), function (source) {
-      for (prop in source) obj[prop] = source[prop];  
+    each(_.rest(arguments), function(source) {
+      for (var prop in source) obj[prop] = source[prop];
     });
     return obj;
   };

From 78245c206fddcca91f0a2345dd026e46d2bd5f55 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 14 Mar 2010 10:11:42 -0700
Subject: [PATCH 167/533] adding a version number to package.json -- the format
 has changed

---
 package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 2cbc8128d..91eb4bab9 100644
--- a/package.json
+++ b/package.json
@@ -4,8 +4,8 @@
   "url"           : "http://documentcloud.github.com/underscore/",
   "keywords"      : ["util", "functional", "server", "client", "browser"],
   "author"        : "Jeremy Ashkenas <jeremy@documentcloud.org>",
-  "maintainer"    : "Kris Kowal <kris.kowal@cixar.com>",
   "contributors"  : [],
   "dependencies"  : [],
-  "lib"           : "."
+  "lib"           : ".",
+  "version"       : "0.6.0"
 }

From 1d787815af896dd8b8241d09da867f22dda10cad Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 18 Mar 2010 11:41:02 -0400
Subject: [PATCH 168/533] Underscore 1.0

---
 index.html        | 14 +++++++++++---
 package.json      |  2 +-
 underscore-min.js | 12 ++++++------
 underscore.js     |  2 +-
 4 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/index.html b/index.html
index 97cd8e031..59cae8491 100644
--- a/index.html
+++ b/index.html
@@ -111,12 +111,12 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (0.6.0)</a></td>
+          <td><a href="underscore.js">Development Version (1.0.0)</a></td>
           <td><i>25kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (0.6.0)</a></td>
-          <td><i>3kb, Packed and Gzipped</i></td>
+          <td><a href="underscore-min.js">Production Version (1.0.0)</a></td>
+          <td><i>2.5kb, Packed and Gzipped</i></td>
         </tr>
       </table>
     </p>
@@ -1136,6 +1136,14 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.0.0</b><br />
+        Things have been stable for many months now, so Underscore is now
+        considered to be out of beta, at <b>1.0</b>. Improvements since <b>0.6</b>
+        include <tt>_.isBoolean</tt>, and the ability to have <tt>_.extend</tt>
+        take multiple source objects.
+      </p>
+      
       <p>
         <b class="header">0.6.0</b><br />
         Major release. Incorporates a number of 
diff --git a/package.json b/package.json
index 91eb4bab9..e9fda74e8 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,5 @@
   "contributors"  : [],
   "dependencies"  : [],
   "lib"           : ".",
-  "version"       : "0.6.0"
+  "version"       : "1.0.0"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 39d4a2667..e3b1eb37d 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,5 +1,5 @@
 (function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",B=function(a){return a.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")},j=Array.prototype,l=Object.prototype,o=j.slice,C=j.unshift,D=l.toString,p=l.hasOwnProperty,E=l.propertyIsEnumerable,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var F=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION=
-"0.6.0";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=
+"1.0.0";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=
 function(a,c,d,e){if(v&&a.reduceRight===v)return a.reduceRight(b.bind(d,e),c);a=b.clone(b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;
 if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.some=function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,
 d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,
@@ -8,10 +8,10 @@ function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){e=
 e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.filter(b.uniq(a),function(d){return b.every(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(z&&a.lastIndexOf===z)return a.lastIndexOf(c);
 for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],
 a)});return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=F||function(a){if(b.isArray(a))return b.range(0,
-a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a,c){for(var d in c)a[d]=c[d];return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||
-a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=
-function(a){if(b.isArray(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!E.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||
-D.call(a)==="[object Number]"};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;
-};b.mixin=function(a){i(b.functions(a),function(c){G(c,b[c]=a[c])})};var H=0;b.uniqueId=function(a){var c=H++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+B(d.end)+")","g");a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,
+a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;
+if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;
+return true};b.isEmpty=function(a){if(b.isArray(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!E.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===
++a||D.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=
+0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){G(c,b[c]=a[c])})};var H=0;b.uniqueId=function(a){var c=H++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+B(d.end)+")","g");a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,
 "',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?a(c):a};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},G=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);C.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push",
 "reverse","shift","sort","splice","unshift"],function(a){var c=j[a];k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 1d835f357..52ce4f771 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '0.6.0';
+  _.VERSION = '1.0.0';
 
   // ------------------------ Collection Functions: ---------------------------
 

From a6578068d212e51aa1988eb7b454ab4a55fd6217 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 19 Mar 2010 10:07:21 -0400
Subject: [PATCH 169/533] Underscore 1.0.1 -- bugfix release for _.isEqual

---
 index.html        | 10 ++++++++--
 package.json      |  2 +-
 test/objects.js   |  1 +
 underscore-min.js |  4 ++--
 underscore.js     |  4 ++--
 5 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/index.html b/index.html
index 59cae8491..f46a6b9a5 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (1.0.0)</a></td>
+          <td><a href="underscore.js">Development Version (1.0.1)</a></td>
           <td><i>25kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (1.0.0)</a></td>
+          <td><a href="underscore-min.js">Production Version (1.0.1)</a></td>
           <td><i>2.5kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1136,6 +1136,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.0.1</b><br />
+        Bugfix for <tt>_.isEqual</tt>, when comparing two objects with the same 
+        number of undefined keys, but with different names.
+      </p>
+      
       <p>
         <b class="header">1.0.0</b><br />
         Things have been stable for many months now, so Underscore is now
diff --git a/package.json b/package.json
index e9fda74e8..197a47660 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,5 @@
   "contributors"  : [],
   "dependencies"  : [],
   "lib"           : ".",
-  "version"       : "1.0.0"
+  "version"       : "1.0.1"
 }
diff --git a/test/objects.js b/test/objects.js
index a30b30e94..6b52fb2c3 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -58,6 +58,7 @@ $(document).ready(function() {
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
+    ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'object with the same number of undefined keys are not equal');
   });
 
   test("objects: isEmpty", function() {
diff --git a/underscore-min.js b/underscore-min.js
index e3b1eb37d..189b2ab27 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,5 +1,5 @@
 (function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",B=function(a){return a.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")},j=Array.prototype,l=Object.prototype,o=j.slice,C=j.unshift,D=l.toString,p=l.hasOwnProperty,E=l.propertyIsEnumerable,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var F=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION=
-"1.0.0";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=
+"1.0.1";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=
 function(a,c,d,e){if(v&&a.reduceRight===v)return a.reduceRight(b.bind(d,e),c);a=b.clone(b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;
 if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.some=function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,
 d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,
@@ -9,7 +9,7 @@ e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return
 for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],
 a)});return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=F||function(a){if(b.isArray(a))return b.range(0,
 a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;
-if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!b.isEqual(a[f],c[f]))return false;
+if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;
 return true};b.isEmpty=function(a){if(b.isArray(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift)};b.isArguments=function(a){return a&&b.isNumber(a.length)&&!a.concat&&!a.substr&&!a.apply&&!E.call(a,"length")};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===
 +a||D.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=
 0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){G(c,b[c]=a[c])})};var H=0;b.uniqueId=function(a){var c=H++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+B(d.end)+")","g");a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,
diff --git a/underscore.js b/underscore.js
index 52ce4f771..9a6c02f65 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.0.0';
+  _.VERSION = '1.0.1';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -485,7 +485,7 @@
     // Different object sizes?
     if (aKeys.length != bKeys.length) return false;
     // Recursive comparison of contents.
-    for (var key in a) if (!_.isEqual(a[key], b[key])) return false;
+    for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
     return true;
   };
 

From c8858f4c8fd6afd6905bf77d9ae7272936d53c91 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 23 Mar 2010 11:06:11 -0400
Subject: [PATCH 170/533] Underscore 1.0.2, with a fixed _.isArguments for
 Opera

---
 index.html        | 10 ++++++++--
 package.json      |  2 +-
 underscore-min.js | 34 +++++++++++++++++-----------------
 underscore.js     |  6 +++---
 4 files changed, 29 insertions(+), 23 deletions(-)

diff --git a/index.html b/index.html
index f46a6b9a5..260a1c69b 100644
--- a/index.html
+++ b/index.html
@@ -111,11 +111,11 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (1.0.1)</a></td>
+          <td><a href="underscore.js">Development Version (1.0.2)</a></td>
           <td><i>25kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (1.0.1)</a></td>
+          <td><a href="underscore-min.js">Production Version (1.0.2)</a></td>
           <td><i>2.5kb, Packed and Gzipped</i></td>
         </tr>
       </table>
@@ -1136,6 +1136,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.0.2</b><br />
+        Fixes <tt>_.isArguments</tt> in recent versions of Opera, which have
+        arguments objects as real Arrays.
+      </p>
+      
       <p>
         <b class="header">1.0.1</b><br />
         Bugfix for <tt>_.isEqual</tt>, when comparing two objects with the same 
diff --git a/package.json b/package.json
index 197a47660..6771de07e 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,5 @@
   "contributors"  : [],
   "dependencies"  : [],
   "lib"           : ".",
-  "version"       : "1.0.1"
+  "version"       : "1.0.2"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 189b2ab27..7cfbf9937 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,17 +1,17 @@
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diff --git a/underscore.js b/underscore.js
index 9a6c02f65..625411233 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.0.1';
+  _.VERSION = '1.0.2';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -504,12 +504,12 @@
   // Is a given value an array?
   // Delegates to ECMA5's native Array.isArray
   _.isArray = nativeIsArray || function(obj) {
-    return !!(obj && obj.concat && obj.unshift);
+    return !!(obj && obj.concat && obj.unshift && !obj.callee);
   };
 
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
-    return obj && _.isNumber(obj.length) && !obj.concat && !obj.substr && !obj.apply && !propertyIsEnumerable.call(obj, 'length');
+    return obj && obj.callee;
   };
 
   // Is a given value a function?

From f0427da9cf24e46b57530c357b54c73fb1a39115 Mon Sep 17 00:00:00 2001
From: AJ ONeal <coolaj86@gmail.com>
Date: Sun, 4 Apr 2010 13:27:02 -0700
Subject: [PATCH 171/533] Fixed documentation typo. Renamed _.isFuction to
 _.isString.

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 260a1c69b..bdaef73ca 100644
--- a/index.html
+++ b/index.html
@@ -863,7 +863,7 @@ _.isFunction(alert);
         Returns <i>true</i> if <b>object</b> is a String.
       </p>
       <pre>
-_.isFunction("moe");
+_.isString("moe");
 =&gt; true
 </pre>
 

From 79f65b440ad5e14ff2c624a836a3eff33465be9f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 6 Apr 2010 13:01:45 -0400
Subject: [PATCH 172/533] Even though it's not really part of the API, making
 _.isEmpty work with Strings cross-browser.

---
 test/objects.js | 2 ++
 underscore.js   | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 6b52fb2c3..83955c60c 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -69,6 +69,8 @@ $(document).ready(function() {
     ok(_.isEmpty(new RegExp('')), 'objects with prototype properties are empty');
     ok(_.isEmpty(null), 'null is empty');
     ok(_.isEmpty(), 'undefined is empty');
+    ok(_.isEmpty(''), 'the empty string is empty');
+    ok(!_.isEmpty('moe'), 'but other strings are not');
 
     var obj = {one : 1};
     delete obj.one;
diff --git a/underscore.js b/underscore.js
index 625411233..8111253fa 100644
--- a/underscore.js
+++ b/underscore.js
@@ -491,7 +491,7 @@
 
   // Is a given array or object empty?
   _.isEmpty = function(obj) {
-    if (_.isArray(obj)) return obj.length === 0;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
     for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
     return true;
   };

From 0e8ca3cb978f4fe0205a25ba94dd0564b5c2fc83 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Sat, 12 Jun 2010 17:10:48 -0400
Subject: [PATCH 173/533] NaN is never equal to NaN. Fixed in underscore.js and
 underscore-min.js, updated tests in test/objects.js

---
 test/objects.js   | 4 +++-
 underscore-min.js | 2 +-
 underscore.js     | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 83955c60c..b0413f04a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -54,7 +54,9 @@ $(document).ready(function() {
     ok(_.isEqual(moe, clone), 'deep equality is true');
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
     ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
-    ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
+	ok(NaN != NaN, 'NaN is not equal to NaN (native equality)');
+	ok(NaN !== NaN, 'NaN is not equal to NaN (native identity)');
+    ok(!_.isEqual(NaN, NaN), 'NaN is not equal to NaN');
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
diff --git a/underscore-min.js b/underscore-min.js
index 7cfbf9937..abba19401 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -9,7 +9,7 @@ b.intersect=function(a){var c=b.rest(arguments);return b.filter(b.uniq(a),functi
 c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],a)});return a};b.delay=function(a,
 c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=E||function(a){if(b.isArray(a))return b.range(0,a.length);var c=[];for(var d in a)p.call(a,
 d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;
-if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return true;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a))return a.length===
+if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return false;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a))return a.length===
 0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return a&&a.callee};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||D.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&
 a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){F(c,b[c]=a[c])})};
 var G=0;b.uniqueId=function(a){var c=G++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+B(d.end)+")","g");a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+
diff --git a/underscore.js b/underscore.js
index 8111253fa..b3deb336d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -469,7 +469,7 @@
     // Check dates' integer values.
     if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
     // Both are NaN?
-    if (_.isNaN(a) && _.isNaN(b)) return true;
+    if (_.isNaN(a) && _.isNaN(b)) return false;
     // Compare regular expressions.
     if (_.isRegExp(a) && _.isRegExp(b))
       return a.source     === b.source &&

From bce016fc7271c2074b68996e7c169ddc6f676f52 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Jun 2010 15:59:24 -0400
Subject: [PATCH 174/533] Underscore 1.0.3

---
 index.html        | 15 +++++++++++----
 package.json      |  2 +-
 underscore-min.js | 32 ++++++++++++++++----------------
 underscore.js     |  2 +-
 4 files changed, 29 insertions(+), 22 deletions(-)

diff --git a/index.html b/index.html
index bdaef73ca..3b7b4ec7d 100644
--- a/index.html
+++ b/index.html
@@ -111,12 +111,12 @@
     <p>
       <table>
         <tr>
-          <td><a href="underscore.js">Development Version (1.0.2)</a></td>
-          <td><i>25kb, Uncompressed with Comments</i></td>
+          <td><a href="underscore.js">Development Version (1.0.3)</a></td>
+          <td><i>24kb, Uncompressed with Comments</i></td>
         </tr>
         <tr>
-          <td><a href="underscore-min.js">Production Version (1.0.2)</a></td>
-          <td><i>2.5kb, Packed and Gzipped</i></td>
+          <td><a href="underscore-min.js">Production Version (1.0.3)</a></td>
+          <td><i>2.9kb, Packed and Gzipped</i></td>
         </tr>
       </table>
     </p>
@@ -1136,6 +1136,13 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.0.3</b><br />
+        Patch that makes <tt>_.isEqual</tt> return <tt>false</tt> if any property
+        of the compared object has a <tt>NaN</tt> value. Technically the correct
+        thing to do, but of questionable semantics. Watch out for NaN comparisons.
+      </p>
+      
       <p>
         <b class="header">1.0.2</b><br />
         Fixes <tt>_.isArguments</tt> in recent versions of Opera, which have
diff --git a/package.json b/package.json
index 6771de07e..a017f8ce1 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,5 @@
   "contributors"  : [],
   "dependencies"  : [],
   "lib"           : ".",
-  "version"       : "1.0.2"
+  "version"       : "1.0.3"
 }
diff --git a/underscore-min.js b/underscore-min.js
index abba19401..022a1ff32 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,17 +1,17 @@
-(function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",B=function(a){return a.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")},j=Array.prototype,l=Object.prototype,o=j.slice,C=j.unshift,D=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var E=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.0.2";var i=b.forEach=
-function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(v&&
-a.reduceRight===v)return a.reduceRight(b.bind(d,e),c);a=b.clone(b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,
-d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.some=function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,
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-var G=0;b.uniqueId=function(a){var c=G++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+B(d.end)+")","g");a=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+
-"');}return p.join('');");return c?a(c):a};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},F=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);C.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];
+(function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",j=Array.prototype,l=Object.prototype,o=j.slice,B=j.unshift,C=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var D=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.0.3";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
+0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v)return a.reduceRight(b.bind(d,e),c);a=b.clone(b.toArray(a)).reverse();return b.reduce(a,
+c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.some=
+function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,
+a);var e={computed:-Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){var g=e.criteria,h=f.criteria;return g<h?-1:g>h?
+1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return o.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?o.call(a,0,c):a[0]};b.rest=function(a,c,d){return o.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};
+b.compact=function(a){return b.filter(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.filter(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.filter(b.uniq(a),function(d){return b.every(c,
+function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(z&&a.lastIndexOf===z)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=
+1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],a)});return a};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};
+b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=D||function(a){if(b.isArray(a))return b.range(0,a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};
+b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===
+c.getTime();if(b.isNaN(a)&&b.isNaN(c))return false;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,
+c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return a&&a.callee};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||C.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&
+a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=
+function(a){var c=F++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+d.end.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")+")","g");d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+
+"');}return p.join('');");return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},E=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];
 k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index b3deb336d..99ca363bf 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.0.2';
+  _.VERSION = '1.0.3';
 
   // ------------------------ Collection Functions: ---------------------------
 

From d62906672b62c0e1c7817d74d3f1971cc3f132bc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Jun 2010 16:13:22 -0400
Subject: [PATCH 175/533] adding a main stanza to package.json for npm
 installation.

---
 package.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package.json b/package.json
index a017f8ce1..b131cd3bb 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,6 @@
   "contributors"  : [],
   "dependencies"  : [],
   "lib"           : ".",
+  "main"          : "underscore.js",
   "version"       : "1.0.3"
 }

From 29e2c832bcfc673f1638afcf238787cc7e914dd3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 22 Jun 2010 09:21:03 -0400
Subject: [PATCH 176/533] Underscore 1.0.4, with _.memoize

---
 index.html        | 52 ++++++++++++++++++++++++++++++++---------------
 package.json      |  2 +-
 test/functions.js |  9 ++++++++
 test/objects.js   |  2 +-
 underscore-min.js | 20 +++++++++---------
 underscore.js     | 12 ++++++++++-
 6 files changed, 68 insertions(+), 29 deletions(-)

diff --git a/index.html b/index.html
index 3b7b4ec7d..289bbb520 100644
--- a/index.html
+++ b/index.html
@@ -108,18 +108,16 @@
 
     <h2>Downloads <i style="padding-left: 12px; font-size:12px;">(Right-click, and use "Save As")</i></h2>
 
-    <p>
-      <table>
-        <tr>
-          <td><a href="underscore.js">Development Version (1.0.3)</a></td>
-          <td><i>24kb, Uncompressed with Comments</i></td>
-        </tr>
-        <tr>
-          <td><a href="underscore-min.js">Production Version (1.0.3)</a></td>
-          <td><i>2.9kb, Packed and Gzipped</i></td>
-        </tr>
-      </table>
-    </p>
+    <table>
+      <tr>
+        <td><a href="underscore.js">Development Version (1.0.4)</a></td>
+        <td><i>24kb, Uncompressed with Comments</i></td>
+      </tr>
+      <tr>
+        <td><a href="underscore-min.js">Production Version (1.0.4)</a></td>
+        <td><i>2.9kb, Packed and Gzipped</i></td>
+      </tr>
+    </table>
 
     <h2>Table of Contents</h2>
     
@@ -144,15 +142,16 @@
       <br />
       <span class="methods"><a href="#first">first</a>, <a href="#rest">rest</a>, <a href="#last">last</a>,
       <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>,
-      <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a></span>,
+      <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a>,
       <a href="#lastIndexOf">lastIndexOf</a>, <a href="#range">range</a></span>
     </p>
 
     <p>
       <b>Functions</b>
       <br />
-      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, <a href="#delay">delay</a>,
-      <a href="#defer">defer</a>, <a href="#wrap">wrap</a></span>, <a href="#compose">compose</a></span>
+      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, 
+      <a href="#memoize">memoize</a>, <a href="#delay">delay</a>, <a href="#defer">defer</a>, 
+      <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
     </p>
 
     <p>
@@ -173,7 +172,7 @@
       <br />
       <span class="methods"><a href="#noConflict">noConflict</a>,
       <a href="#identity">identity</a>, <a href="#times">times</a>, 
-      <a href="#breakLoop">breakLoop</a></span>, <a href="#mixin">mixin</a></span>, 
+      <a href="#breakLoop">breakLoop</a>, <a href="#mixin">mixin</a>, 
       <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
     </p>
 
@@ -652,6 +651,21 @@ var buttonView = {
 _.bindAll(buttonView);
 jQuery('#underscore_button').bind('click', buttonView.onClick);
 =&gt; When the button is clicked, this.label will have the correct value...
+</pre>
+
+      <p id="memoize">
+        <b class="header">memoize</b><code>_.memoize(function, [hashFunction])</code>
+        <br />
+        Memoizes a given <b>function</b> by caching the computed result. Useful
+        for speeding up slow-running computations. If passed an optional 
+        <b>hashFunction</b>, it will be used to compute the hash key for storing
+        the result, based on the arguments to the original function.
+      </p>
+      <pre>
+var fibonacci = function(n) {
+  return n &lt; 2 ? n : fibonacci(n - 1) + fibonacci(n - 2);
+};
+var fastFibonacci = _.memoize(fibonacci);
 </pre>
 
       <p id="delay">
@@ -1136,6 +1150,12 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.0.4</b><br />
+        Andri Möll contributed the <tt>_.memoize</tt> function, which can be
+        used to speed up expensive repeated computations by caching the results.
+      </p>
+      
       <p>
         <b class="header">1.0.3</b><br />
         Patch that makes <tt>_.isEqual</tt> return <tt>false</tt> if any property
diff --git a/package.json b/package.json
index b131cd3bb..5a1d90d4a 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "lib"           : ".",
   "main"          : "underscore.js",
-  "version"       : "1.0.3"
+  "version"       : "1.0.4"
 }
diff --git a/test/functions.js b/test/functions.js
index 7633a6b08..eba6309d7 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -45,6 +45,15 @@ $(document).ready(function() {
     equals(curly.sayHi(), 'hi: moe', 'calling bindAll with no arguments binds all functions to the object');
   });
 
+  test("functions: memoize", function() {
+    var fib = function(n) {
+      return n < 2 ? n : fib(n - 1) + fib(n - 2);
+    };
+    var fastFib = _.memoize(fib);
+    equals(fib(10), 55, 'a memoized version of fibonacci produces identical results');
+    equals(fastFib(10), 55, 'a memoized version of fibonacci produces identical results');
+  });
+
   asyncTest("functions: delay", function() {
     var delayed = false;
     _.delay(function(){ delayed = true; }, 100);
diff --git a/test/objects.js b/test/objects.js
index b0413f04a..7dadb8476 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -16,7 +16,7 @@ $(document).ready(function() {
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isBoolean", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "methods", "min", "mixin", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
+    "memoize", "methods", "min", "mixin", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
     "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
     "uniqueId", "values", "without", "wrap", "zip"];
     same(expected, _.methods(_), 'provides a sorted list of functions');
diff --git a/underscore-min.js b/underscore-min.js
index 022a1ff32..2ee918c5d 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,4 +1,4 @@
-(function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",j=Array.prototype,l=Object.prototype,o=j.slice,B=j.unshift,C=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var D=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.0.3";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
+(function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",j=Array.prototype,l=Object.prototype,o=j.slice,B=j.unshift,C=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var D=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.0.4";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
 0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v)return a.reduceRight(b.bind(d,e),c);a=b.clone(b.toArray(a)).reverse();return b.reduce(a,
 c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.some=
 function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,
@@ -6,12 +6,12 @@ a);var e={computed:-Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.com
 1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return o.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?o.call(a,0,c):a[0]};b.rest=function(a,c,d){return o.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};
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 function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(z&&a.lastIndexOf===z)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=
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-a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=
-function(a){var c=F++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+d.end.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")+")","g");d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g," ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+
-"');}return p.join('');");return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},E=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];
-k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=function(){return this._wrapped}})();
+1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],a)});return a};b.memoize=function(a,c){var d={};c=c||b.identity;return function(){var e=c.apply(this,arguments);return e in
+d?d[e]:(d[e]=a.apply(this,arguments))}};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=D||function(a){if(b.isArray(a))return b.range(0,
+a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;
+if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return false;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],
+c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return a&&a.callee};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===
++a||C.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=
+0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=function(a){var c=F++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+d.end.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")+")","g");d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g,
+" ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},E=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);
+B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 99ca363bf..1170caf8d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.0.3';
+  _.VERSION = '1.0.4';
 
   // ------------------------ Collection Functions: ---------------------------
 
@@ -375,6 +375,16 @@
     return obj;
   };
 
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher = hasher || _.identity;
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return key in memo ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
   // Delays a function for the given number of milliseconds, and then calls
   // it with the arguments supplied.
   _.delay = function(func, wait) {

From 1a67c8d3a7fead4fe5bc146eb91282b6833ce46d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 22 Jun 2010 12:49:59 -0400
Subject: [PATCH 177/533] adding Andri's link to the changelog

---
 index.html | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index 289bbb520..3f9d59c88 100644
--- a/index.html
+++ b/index.html
@@ -1152,8 +1152,9 @@ _([1, 2, 3]).value();
       
       <p>
         <b class="header">1.0.4</b><br />
-        Andri Möll contributed the <tt>_.memoize</tt> function, which can be
-        used to speed up expensive repeated computations by caching the results.
+        <a href="http://themoell.com/">Andri Möll</a> contributed the <tt>_.memoize</tt> 
+        function, which can be used to speed up expensive repeated computations 
+        by caching the results.
       </p>
       
       <p>
@@ -1248,7 +1249,8 @@ _([1, 2, 3]).value();
         <b class="header">0.5.1</b><br />
         Added an <tt>_.isArguments</tt> function. Lots of little safety checks
         and optimizations contributed by
-        <a href="http://github.com/iamnoah/">Noah Sloan</a> and Andri Möll.
+        <a href="http://github.com/iamnoah/">Noah Sloan</a> and 
+        <a href="http://themoell.com/">Andri Möll</a>.
       </p>
 
       <p>

From 868c5c8d85b47f90502f4e470ea62740ec20b1f3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 5 Jul 2010 15:35:11 -0400
Subject: [PATCH 178/533] adding melmacian's Underscore.strings to the Links
 section of the docs

---
 index.html | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/index.html b/index.html
index 3f9d59c88..4db208a51 100644
--- a/index.html
+++ b/index.html
@@ -1128,6 +1128,13 @@ _([1, 2, 3]).value();
         The <a href="http://github.com/mirven/underscore.lua">source</a> is
         available on GitHub.
       </p>
+      
+      <p>
+        <a href="http://esa-matti.suuronen.org/projects/underscore.strings/">Underscore.strings</a>,
+        an Underscore extension that adds functions for string-manipulation: 
+        <tt>trim</tt>, <tt>startsWith</tt>, <tt>contains</tt>, <tt>capitalize</tt>,
+        <tt>reverse</tt>, <tt>sprintf</tt>, and more.
+      </p>
 
       <p>
         Ruby's <a href="http://ruby-doc.org/core/classes/Enumerable.html">Enumerable</a> module.

From e81a2ec5160787d9021ca6aa6876d5c04597d52c Mon Sep 17 00:00:00 2001
From: Nick Stenning <nick@whiteink.com>
Date: Wed, 14 Jul 2010 11:09:05 +0100
Subject: [PATCH 179/533] Allow _.template functions to be called with no
 arguments.

This change simply allows templates to be called with no arguments, for a behaviour equivalent to being called with an empty object, {}.
---
 test/utility.js | 4 ++++
 underscore.js   | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index c9498c227..7673eadfa 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -59,6 +59,10 @@ $(document).ready(function() {
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
+    var noInterpolateTemplate = _.template("<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
+    result = noInterpolateTemplate();
+    equals(result, "<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
+
     var quoteTemplate = _.template("It's its, not it's");
     equals(quoteTemplate({}), "It's its, not it's");
 
diff --git a/underscore.js b/underscore.js
index 1170caf8d..b0533cadc 100644
--- a/underscore.js
+++ b/underscore.js
@@ -625,7 +625,7 @@
     var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
     var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
-      'with(obj){p.push(\'' +
+      'with(obj||{}){p.push(\'' +
       str.replace(/[\r\t\n]/g, " ")
          .replace(endMatch,"\t")
          .split("'").join("\\'")

From 9827f876112c6ee189e3e7655d50900f6f44334f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 15 Jul 2010 09:50:55 -0400
Subject: [PATCH 180/533] (breaking change) moving _.reduce's method signature
 to that of ECMA5. _.reduce(obj, iterator, memo). Updated tests and docs.

---
 index.html          | 12 ++++++------
 test/chaining.js    |  4 ++--
 test/collections.js | 10 +++++-----
 underscore.js       | 24 +++++++++++++++---------
 4 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/index.html b/index.html
index 4db208a51..4cbad8700 100644
--- a/index.html
+++ b/index.html
@@ -216,10 +216,10 @@ var lyrics = [
 _(lyrics).chain()
   .map(function(line) { return line.words.split(' '); })
   .flatten()
-  .reduce({}, function(counts, word) {
+  .reduce(function(counts, word) {
     counts[word] = (counts[word] || 0) + 1;
     return counts;
-}).value();
+}, {}).value();
 
 =&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
 
@@ -261,7 +261,7 @@ _.map([1, 2, 3], function(num){ return num * 3 });
 =&gt; [3, 6, 9]</pre>
 
       <p id="reduce">
-        <b class="header">reduce</b><code>_.reduce(list, memo, iterator, [context])</code>
+        <b class="header">reduce</b><code>_.reduce(list, iterator, memo, [context])</code>
         <span class="alias">Aliases: <b>inject, foldl</b></span>
         <br />
         Also known as <b>inject</b> and <b>foldl</b>, <b>reduce</b> boils down a
@@ -270,12 +270,12 @@ _.map([1, 2, 3], function(num){ return num * 3 });
         <b>iterator</b>.
       </p>
       <pre>
-var sum = _.reduce([1, 2, 3], 0, function(memo, num){ return memo + num });
+var sum = _.reduce([1, 2, 3], function(memo, num){ return memo + num }, 0);
 =&gt; 6
 </pre>
 
       <p id="reduceRight">
-        <b class="header">reduceRight</b><code>_.reduceRight(list, memo, iterator, [context])</code>
+        <b class="header">reduceRight</b><code>_.reduceRight(list, iterator, memo, [context])</code>
         <span class="alias">Alias: <b>foldr</b></span>
         <br />
         The right-associative version of <b>reduce</b>. Delegates to the
@@ -285,7 +285,7 @@ var sum = _.reduce([1, 2, 3], 0, function(memo, num){ return memo + num });
       </p>
       <pre>
 var list = [[0, 1], [2, 3], [4, 5]];
-var flat = _.reduceRight(list, [], function(a, b) { return a.concat(b); });
+var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []);
 =&gt; [4, 5, 2, 3, 0, 1]
 </pre>
 
diff --git a/test/chaining.js b/test/chaining.js
index 55f0c8c0d..e633ba5ad 100644
--- a/test/chaining.js
+++ b/test/chaining.js
@@ -12,11 +12,11 @@ $(document).ready(function() {
     var counts = _(lyrics).chain()
       .map(function(line) { return line.split(''); })
       .flatten()
-      .reduce({}, function(hash, l) {
+      .reduce(function(hash, l) {
         hash[l] = hash[l] || 0;
         hash[l]++;
         return hash;
-    }).value();
+    }, {}).value();
     ok(counts['a'] == 16 && counts['e'] == 10, 'counted all the letters in the song');
   });
 
diff --git a/test/collections.js b/test/collections.js
index 3759a6495..eb449d690 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -53,22 +53,22 @@ $(document).ready(function() {
   });
 
   test('collections: reduce', function() {
-    var sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num; });
+    var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; }, 0);
     equals(sum, 6, 'can sum up an array');
 
     var context = {multiplier : 3};
-    sum = _.reduce([1, 2, 3], 0, function(sum, num){ return sum + num * this.multiplier; }, context);
+    sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num * this.multiplier; }, 0, context);
     equals(sum, 18, 'can reduce with a context object');
 
-    sum = _.inject([1, 2, 3], 0, function(sum, num){ return sum + num; });
+    sum = _.inject([1, 2, 3], function(sum, num){ return sum + num; }, 0);
     equals(sum, 6, 'aliased as "inject"');
 
-    sum = _([1, 2, 3]).reduce(0, function(sum, num){ return sum + num; });
+    sum = _([1, 2, 3]).reduce(function(sum, num){ return sum + num; }, 0);
     equals(sum, 6, 'OO-style reduce');
   });
 
   test('collections: reduceRight', function() {
-    var list = _.foldr([1, 2, 3], '', function(memo, num){ return memo + num; });
+    var list = _.foldr([1, 2, 3], function(memo, num){ return memo + num; }, '');
     equals(list, '321', 'can perform right folds');
   });
 
diff --git a/underscore.js b/underscore.js
index b0533cadc..a7274adea 100644
--- a/underscore.js
+++ b/underscore.js
@@ -92,8 +92,11 @@
 
   // Reduce builds up a single result from a list of values, aka inject, or foldl.
   // Delegates to JavaScript 1.8's native reduce if available.
-  _.reduce = function(obj, memo, iterator, context) {
-    if (nativeReduce && obj.reduce === nativeReduce) return obj.reduce(_.bind(iterator, context), memo);
+  _.reduce = function(obj, iterator, memo, context) {
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return obj.reduce(iterator, memo);
+    }
     each(obj, function(value, index, list) {
       memo = iterator.call(context, memo, value, index, list);
     });
@@ -102,10 +105,13 @@
 
   // The right-associative version of reduce, also known as foldr. Uses
   // Delegates to JavaScript 1.8's native reduceRight if available.
-  _.reduceRight = function(obj, memo, iterator, context) {
-    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) return obj.reduceRight(_.bind(iterator, context), memo);
+  _.reduceRight = function(obj, iterator, memo, context) {
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return obj.reduceRight(iterator, memo);
+    }
     var reversed = _.clone(_.toArray(obj)).reverse();
-    return _.reduce(reversed, memo, iterator, context);
+    return _.reduce(reversed, iterator, memo, context);
   };
 
   // Return the first value which passes a truth test.
@@ -277,11 +283,11 @@
 
   // Return a completely flattened version of an array.
   _.flatten = function(array) {
-    return _.reduce(array, [], function(memo, value) {
+    return _.reduce(array, function(memo, value) {
       if (_.isArray(value)) return memo.concat(_.flatten(value));
       memo.push(value);
       return memo;
-    });
+    }, []);
   };
 
   // Return a version of the array that does not contain the specified value(s).
@@ -293,10 +299,10 @@
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
   _.uniq = function(array, isSorted) {
-    return _.reduce(array, [], function(memo, el, i) {
+    return _.reduce(array, function(memo, el, i) {
       if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
       return memo;
-    });
+    }, []);
   };
 
   // Produce an array that contains every item shared between all the

From ef396a9e1300ac8e0b95c8f7d14f028fab155621 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 15 Jul 2010 10:18:11 -0400
Subject: [PATCH 181/533] Aliasing _.contains to _.include

---
 index.html          | 1 +
 test/collections.js | 2 +-
 test/objects.js     | 2 +-
 underscore.js       | 1 +
 4 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 4cbad8700..a39074357 100644
--- a/index.html
+++ b/index.html
@@ -356,6 +356,7 @@ _.any([null, 0, 'yes', false]);
 
       <p id="include">
         <b class="header">include</b><code>_.include(list, value)</code>
+        <span class="alias">Alias: <b>contains</b></span>
         <br />
         Returns <i>true</i> if the <b>value</b> is present in the <b>list</b>, using
         <i>===</i> to test equality. Uses <b>indexOf</b> internally, if <b>list</b>
diff --git a/test/collections.js b/test/collections.js
index eb449d690..9c72e889e 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -111,7 +111,7 @@ $(document).ready(function() {
   test('collections: include', function() {
     ok(_.include([1,2,3], 2), 'two is in the array');
     ok(!_.include([1,3,9], 2), 'two is not in the array');
-    ok(_.include({moe:1, larry:3, curly:9}, 3), '_.include on objects checks their values');
+    ok(_.contains({moe:1, larry:3, curly:9}, 3), '_.include on objects checks their values');
     ok(_([1,2,3]).include(2), 'OO-style include');
   });
 
diff --git a/test/objects.js b/test/objects.js
index 7dadb8476..fc9c93d42 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -12,7 +12,7 @@ $(document).ready(function() {
 
   test("objects: functions", function() {
     var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
-    "compose","defer", "delay", "detect", "each", "every", "extend", "filter", "first",
+    "compose", "contains", "defer", "delay", "detect", "each", "every", "extend", "filter", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isBoolean", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
diff --git a/underscore.js b/underscore.js
index a7274adea..5d45d8536 100644
--- a/underscore.js
+++ b/underscore.js
@@ -651,6 +651,7 @@
   _.select   = _.filter;
   _.all      = _.every;
   _.any      = _.some;
+  _.contains = _.include;
   _.head     = _.first;
   _.tail     = _.rest;
   _.methods  = _.functions;

From b2b5a5390bed8682cb78562deb42d69c8170978f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 20 Jul 2010 13:37:27 -0400
Subject: [PATCH 182/533] merging a variant of svieira's fix for preserving
 whitespace within templates.

---
 test/utility.js |  3 +++
 underscore.js   | 10 ++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index 7673eadfa..8670a9fda 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -69,6 +69,9 @@ $(document).ready(function() {
     var quoteInStatementAndBody = _.template("<% if(foo == 'bar'){ %>Statement quotes and 'quotes'.<% } %>");
     equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
+    var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.');
+    equals(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
+
     _.templateSettings = {
       start       : '{{',
       end         : '}}',
diff --git a/underscore.js b/underscore.js
index 5d45d8536..ded7d9b14 100644
--- a/underscore.js
+++ b/underscore.js
@@ -625,17 +625,19 @@
   // JavaScript templating a-la ERB, pilfered from John Resig's
   // "Secrets of the JavaScript Ninja", page 83.
   // Single-quote fix from Rick Strahl's version.
-  // With alterations for arbitrary delimiters.
+  // With alterations for arbitrary delimiters, and to preserve whitespace.
   _.template = function(str, data) {
     var c  = _.templateSettings;
     var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
     var fn = new Function('obj',
       'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj||{}){p.push(\'' +
-      str.replace(/[\r\t\n]/g, " ")
-         .replace(endMatch,"\t")
+      str.replace(/\r/g, '\\r')
+         .replace(/\n/g, '\\n')
+         .replace(/\t/g, '\\t')
+         .replace(endMatch,"✄")
          .split("'").join("\\'")
-         .split("\t").join("'")
+         .split("✄").join("'")
          .replace(c.interpolate, "',$1,'")
          .split(c.start).join("');")
          .split(c.end).join("p.push('")

From fc90d57e36266b9b68efcda461aa4bf0425242cd Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 18 Aug 2010 09:26:36 -0400
Subject: [PATCH 183/533] Underscore.js 1.1.0

---
 README            |  1 +
 index.html        | 17 +++++++++++++----
 package.json      |  2 +-
 underscore-min.js | 17 +++++++++--------
 underscore.js     |  2 +-
 5 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/README b/README
index 333b13f45..c7eb97bd1 100644
--- a/README
+++ b/README
@@ -27,5 +27,6 @@ Many thanks to our contributors:
   Kris Kowal
   Jed Schmidt
   Noah Sloan
+  Nick Stenning
   Luke Sutton
   John Wright
diff --git a/index.html b/index.html
index a39074357..597d8f602 100644
--- a/index.html
+++ b/index.html
@@ -110,12 +110,12 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.0.4)</a></td>
-        <td><i>24kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.1.0)</a></td>
+        <td><i>25kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.0.4)</a></td>
-        <td><i>2.9kb, Packed and Gzipped</i></td>
+        <td><a href="underscore-min.js">Production Version (1.1.0)</a></td>
+        <td><i>3kb, Packed and Gzipped</i></td>
       </tr>
     </table>
 
@@ -1158,6 +1158,15 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.1.0</b><br />
+        The method signature of <tt>_.reduce</tt> has been changed to match
+        the ECMAScript 5 signature, instead of the Ruby/Prototype.js version.
+        This is a backwards-incompatible change. <tt>_.template</tt> may now be
+        called with no arguments, and preserves whitespace. <tt>_.contains</tt>
+        is a new alias for <tt>_.include</tt>.
+      </p>
+      
       <p>
         <b class="header">1.0.4</b><br />
         <a href="http://themoell.com/">Andri Möll</a> contributed the <tt>_.memoize</tt> 
diff --git a/package.json b/package.json
index 5a1d90d4a..f00dacc03 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "lib"           : ".",
   "main"          : "underscore.js",
-  "version"       : "1.0.4"
+  "version"       : "1.1.0"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 2ee918c5d..18fed07f9 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,10 +1,10 @@
-(function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",j=Array.prototype,l=Object.prototype,o=j.slice,B=j.unshift,C=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var D=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.0.4";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
-0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u)return a.reduce(b.bind(d,e),c);i(a,function(f,g,h){c=d.call(e,c,f,g,h)});return c};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v)return a.reduceRight(b.bind(d,e),c);a=b.clone(b.toArray(a)).reverse();return b.reduce(a,
-c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});return e};b.some=
-function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,
+(function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",j=Array.prototype,l=Object.prototype,o=j.slice,B=j.unshift,C=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var D=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.1.0";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
+0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u){if(e)c=b.bind(c,e);return a.reduce(c,d)}i(a,function(f,g,h){d=c.call(e,d,f,g,h)});return d};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v){if(e)c=b.bind(c,e);return a.reduceRight(c,d)}a=b.clone(b.toArray(a)).reverse();
+return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});
+return e};b.some=function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,
 a);var e={computed:-Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){var g=e.criteria,h=f.criteria;return g<h?-1:g>h?
 1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return o.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?o.call(a,0,c):a[0]};b.rest=function(a,c,d){return o.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};
-b.compact=function(a){return b.filter(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,[],function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c})};b.without=function(a){var c=b.rest(arguments);return b.filter(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,[],function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,e)))d.push(e);return d})};b.intersect=function(a){var c=b.rest(arguments);return b.filter(b.uniq(a),function(d){return b.every(c,
+b.compact=function(a){return b.filter(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c},[])};b.without=function(a){var c=b.rest(arguments);return b.filter(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,e)))d.push(e);return d},[])};b.intersect=function(a){var c=b.rest(arguments);return b.filter(b.uniq(a),function(d){return b.every(c,
 function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(z&&a.lastIndexOf===z)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=
 1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],a)});return a};b.memoize=function(a,c){var d={};c=c||b.identity;return function(){var e=c.apply(this,arguments);return e in
 d?d[e]:(d[e]=a.apply(this,arguments))}};b.delay=function(a,c){var d=b.rest(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(b.rest(arguments)))};b.wrap=function(a,c){return function(){var d=[a].concat(b.toArray(arguments));return c.apply(c,d)}};b.compose=function(){var a=b.toArray(arguments);return function(){for(var c=b.toArray(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=D||function(a){if(b.isArray(a))return b.range(0,
@@ -12,6 +12,7 @@ a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=func
 if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return false;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],
 c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return a&&a.callee};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===
 +a||C.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=
-0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=function(a){var c=F++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+d.end.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")+")","g");d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj){p.push('"+a.replace(/[\r\t\n]/g,
-" ").replace(e,"\t").split("'").join("\\'").split("\t").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},E=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);
-B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=function(){return this._wrapped}})();
+0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){i(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=function(a){var c=F++;return a?a+c:c};b.templateSettings={start:"<%",end:"%>",interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings,e=new RegExp("'(?=[^"+d.end.substr(0,1)+"]*"+d.end.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")+")","g");d=new Function("obj","var p=[],print=function(){p.push.apply(p,arguments);};with(obj||{}){p.push('"+a.replace(/\r/g,
+"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t").replace(e,"\u2704").split("'").join("\\'").split("\u2704").join("'").replace(d.interpolate,"',$1,'").split(d.start).join("');").split(d.end).join("p.push('")+"');}return p.join('');");return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.contains=b.include;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var k=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():
+a},E=function(a,c){k.prototype[a]=function(){var d=b.toArray(arguments);B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=
+true;return this};k.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index ded7d9b14..60bf47ccd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.0.4';
+  _.VERSION = '1.1.0';
 
   // ------------------------ Collection Functions: ---------------------------
 

From 7973d7263ce93ef7f4e4d4850afefc5bfefad26e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 26 Aug 2010 01:02:09 -0400
Subject: [PATCH 184/533] slight speedup to _.template

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 60bf47ccd..acf73e858 100644
--- a/underscore.js
+++ b/underscore.js
@@ -630,7 +630,7 @@
     var c  = _.templateSettings;
     var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
     var fn = new Function('obj',
-      'var p=[],print=function(){p.push.apply(p,arguments);};' +
+      'var p=[];' +
       'with(obj||{}){p.push(\'' +
       str.replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')
@@ -638,7 +638,7 @@
          .replace(endMatch,"✄")
          .split("'").join("\\'")
          .split("✄").join("'")
-         .replace(c.interpolate, "',$1,'")
+         .replace(c.interpolate, "' + $1 + '")
          .split(c.start).join("');")
          .split(c.end).join("p.push('")
          + "');}return p.join('');");

From 7a4ddca64d88350a5d8610154f00a02516b6675a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 26 Aug 2010 02:01:24 -0400
Subject: [PATCH 185/533] Revert "slight speedup to _.template"

This reverts commit 7973d7263ce93ef7f4e4d4850afefc5bfefad26e.
---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index acf73e858..60bf47ccd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -630,7 +630,7 @@
     var c  = _.templateSettings;
     var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
     var fn = new Function('obj',
-      'var p=[];' +
+      'var p=[],print=function(){p.push.apply(p,arguments);};' +
       'with(obj||{}){p.push(\'' +
       str.replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')
@@ -638,7 +638,7 @@
          .replace(endMatch,"✄")
          .split("'").join("\\'")
          .split("✄").join("'")
-         .replace(c.interpolate, "' + $1 + '")
+         .replace(c.interpolate, "',$1,'")
          .split(c.start).join("');")
          .split(c.end).join("p.push('")
          + "');}return p.join('');");

From 3588d11adce38ff64e41f92155cfb3c9c4e545ec Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Tue, 31 Aug 2010 12:26:23 -0400
Subject: [PATCH 186/533] Fixing broken link, adding explanation of _.map's
 iterator's arguments, and adding extra examples to _.map and _.each.

---
 index.html | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index 597d8f602..c8ad84562 100644
--- a/index.html
+++ b/index.html
@@ -225,7 +225,7 @@ _(lyrics).chain()
 
       <p>
         In addition, the
-        <a href="https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/Array">Array prototype's methods</a>
+        <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/prototype">Array prototype's methods</a>
         are proxied through the chained Underscore object, so you can slip a
         <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to
         modify the array.
@@ -247,17 +247,22 @@ _(lyrics).chain()
       </p>
       <pre>
 _.each([1, 2, 3], function(num){ alert(num); });
+=&gt; alerts each number in turn...
+_.each({one : 1, two : 2, three : 3}, function(num, key){ alert(num); });
 =&gt; alerts each number in turn...</pre>
 
       <p id="map">
         <b class="header">map</b><code>_.map(list, iterator, [context])</code>
         <br />
         Produces a new array of values by mapping each value in <b>list</b>
-        through a transformation function (<b>iterator</b>). If the native
-        <b>map</b> method exists, it will be used instead.
+        through a transformation function (<b>iterator</b>). If the native <b>map</b> method
+        exists, it will be used instead. If <b>list</b> is a JavaScript object,
+        <b>iterator</b>'s arguments will be <tt>(value, key, list)</tt>.
       </p>
       <pre>
-_.map([1, 2, 3], function(num){ return num * 3 });
+_.map([1, 2, 3], function(num){ return num * 3; });
+=&gt; [3, 6, 9]
+_.map({one : 1, two : 2, three : 3}, function(num, key){ return num * 3; });
 =&gt; [3, 6, 9]</pre>
 
       <p id="reduce">
@@ -270,7 +275,7 @@ _.map([1, 2, 3], function(num){ return num * 3 });
         <b>iterator</b>.
       </p>
       <pre>
-var sum = _.reduce([1, 2, 3], function(memo, num){ return memo + num }, 0);
+var sum = _.reduce([1, 2, 3], function(memo, num){ return memo + num; }, 0);
 =&gt; 6
 </pre>
 

From 116ff91bec2873e0d841427a9f27c8ff16425aec Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 31 Aug 2010 14:53:12 -0400
Subject: [PATCH 187/533] Guarantee boolean return value from `_.isArguments`

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 60bf47ccd..66f83dbfb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -525,7 +525,7 @@
 
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
-    return obj && obj.callee;
+    return !!(obj && obj.callee);
   };
 
   // Is a given value a function?

From 19acc63374299828e25d5e55d5004f562fc6b20f Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 31 Aug 2010 17:02:32 -0400
Subject: [PATCH 188/533] =?UTF-8?q?Improuvements:=20removed=20calls=20to?=
 =?UTF-8?q?=20`String(=E2=80=A6)`=20(speed),=20construction=20of=20arrays?=
 =?UTF-8?q?=20like=20`new=20Array(len)`=20(standards),=20replaced=20`arr.p?=
 =?UTF-8?q?ush(val)`=20with=20`arr[arr.length]=20=3D=20val`=20(speed).?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 underscore.js | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/underscore.js b/underscore.js
index 66f83dbfb..d61d2136e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -85,7 +85,7 @@
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
-      results.push(iterator.call(context, value, index, list));
+      results[results.length] = iterator.call(context, value, index, list);
     });
     return results;
   };
@@ -132,7 +132,7 @@
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
-      iterator.call(context, value, index, list) && results.push(value);
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
     });
     return results;
   };
@@ -141,7 +141,7 @@
   _.reject = function(obj, iterator, context) {
     var results = [];
     each(obj, function(value, index, list) {
-      !iterator.call(context, value, index, list) && results.push(value);
+      if (!iterator.call(context, value, index, list)) results[results.length] = value;
     });
     return results;
   };
@@ -285,7 +285,7 @@
   _.flatten = function(array) {
     return _.reduce(array, function(memo, value) {
       if (_.isArray(value)) return memo.concat(_.flatten(value));
-      memo.push(value);
+      memo[memo.length] = value;
       return memo;
     }, []);
   };
@@ -300,7 +300,7 @@
   // been sorted, you have the option of using a faster algorithm.
   _.uniq = function(array, isSorted) {
     return _.reduce(array, function(memo, el, i) {
-      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo.push(el);
+      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
       return memo;
     }, []);
   };
@@ -321,8 +321,8 @@
   _.zip = function() {
     var args = _.toArray(arguments);
     var length = _.max(_.pluck(args, 'length'));
-    var results = new Array(length);
-    for (var i = 0; i < length; i++) results[i] = _.pluck(args, String(i));
+    var results = [];
+    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
     return results;
   };
 
@@ -354,7 +354,7 @@
     var start = solo ? 0 : a[0], stop = solo ? a[0] : a[1], step = a[2] || 1;
     var len   = Math.ceil((stop - start) / step);
     if (len <= 0) return [];
-    var range = new Array(len);
+    var range = [];
     for (var i = start, idx = 0; true; i += step) {
       if ((step > 0 ? i - stop : stop - i) >= 0) return range;
       range[idx++] = i;
@@ -434,7 +434,7 @@
   _.keys = nativeKeys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys.push(key);
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
     return keys;
   };
 

From 7df67bcc4d2bbe7deb09c0371dde9602479fc6a9 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Wed, 1 Sep 2010 16:18:22 -0400
Subject: [PATCH 189/533] Revert change of `new Array(len)` to `[]`.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index d61d2136e..c20514ca9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -321,7 +321,7 @@
   _.zip = function() {
     var args = _.toArray(arguments);
     var length = _.max(_.pluck(args, 'length'));
-    var results = [];
+    var results = new Array(length);
     for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
     return results;
   };
@@ -354,7 +354,7 @@
     var start = solo ? 0 : a[0], stop = solo ? a[0] : a[1], step = a[2] || 1;
     var len   = Math.ceil((stop - start) / step);
     if (len <= 0) return [];
-    var range = [];
+    var range = new Array(len);
     for (var i = start, idx = 0; true; i += step) {
       if ((step > 0 ? i - stop : stop - i) >= 0) return range;
       range[idx++] = i;

From cd93790282cadf4da59b8b7d52d518aa8f8da963 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 3 Sep 2010 08:41:58 -0400
Subject: [PATCH 190/533] Adding Ryan to the contributor list.

---
 README | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README b/README
index c7eb97bd1..b7baba233 100644
--- a/README
+++ b/README
@@ -29,4 +29,5 @@ Many thanks to our contributors:
   Noah Sloan
   Nick Stenning
   Luke Sutton
+  Ryan Tenney
   John Wright

From 83c7a006cbf38c493bf1f112d59a715297f6a876 Mon Sep 17 00:00:00 2001
From: Michael Wolf <maw@pobox.com>
Date: Thu, 9 Sep 2010 18:19:47 -0500
Subject: [PATCH 191/533] fix tyop

---
 test/arrays.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/arrays.js b/test/arrays.js
index 4b74ecade..aba36e902 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -68,7 +68,7 @@ $(document).ready(function() {
     equals(_.intersect(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
     equals(_(stooges).intersect(leaders).join(''), 'moe', 'can perform an OO-style intersection');
     var result = (function(){ return _.intersect(arguments, leaders); })('moe', 'curly', 'larry');
-    equals(result.join(''), 'moe', 'works an an arguments object');
+    equals(result.join(''), 'moe', 'works on an arguments object');
   });
 
   test('arrays: zip', function() {

From 2068f0819d0d77d8aff769c683c3d469c1410401 Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Thu, 23 Sep 2010 12:35:25 -0400
Subject: [PATCH 192/533] Fixing _.template() bug where using 'p' as a variable
 name would override the variable by the same name in _.template(), causing an
 error. See test case utilities.namespaceCollisionTemplate() for example of
 broken case.

---
 README          |  1 +
 test/utility.js | 11 +++++++++++
 underscore.js   |  8 ++++----
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/README b/README
index b7baba233..716757d52 100644
--- a/README
+++ b/README
@@ -31,3 +31,4 @@ Many thanks to our contributors:
   Luke Sutton
   Ryan Tenney
   John Wright
+  Samuel Clay
diff --git a/test/utility.js b/test/utility.js
index 8670a9fda..0b07b9fd1 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -58,6 +58,17 @@ $(document).ready(function() {
     var fancyTemplate = _.template("<ul><% for (key in people) { %><li><%= people[key] %></li><% } %></ul>");
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+    
+    var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"DV-thumbnail\"><img src=\"<%= p %>\" /></div><% }); %>");
+    result = namespaceCollisionTemplate({
+      pageCount: 3,
+      thumbnails: {
+        1: "p1-thumbnail.gif",
+        2: "p2-thumbnail.gif",
+        3: "p3-thumbnail.gif"
+      }
+    });
+    equals(result, "3 p3-thumbnail.gif <div class=\"DV-thumbnail\"><img src=\"p1-thumbnail.gif\" /></div><div class=\"DV-thumbnail\"><img src=\"p2-thumbnail.gif\" /></div><div class=\"DV-thumbnail\"><img src=\"p3-thumbnail.gif\" /></div>");
 
     var noInterpolateTemplate = _.template("<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
     result = noInterpolateTemplate();
diff --git a/underscore.js b/underscore.js
index c20514ca9..6b77e3469 100644
--- a/underscore.js
+++ b/underscore.js
@@ -630,8 +630,8 @@
     var c  = _.templateSettings;
     var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
     var fn = new Function('obj',
-      'var p=[],print=function(){p.push.apply(p,arguments);};' +
-      'with(obj||{}){p.push(\'' +
+      'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
+      'with(obj||{}){__p.push(\'' +
       str.replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')
          .replace(/\t/g, '\\t')
@@ -640,8 +640,8 @@
          .split("✄").join("'")
          .replace(c.interpolate, "',$1,'")
          .split(c.start).join("');")
-         .split(c.end).join("p.push('")
-         + "');}return p.join('');");
+         .split(c.end).join("__p.push('")
+         + "');}return __p.join('');");
     return data ? fn(data) : fn;
   };
 

From 4c35fc80dc00f2e347eb874d32f37a391cfd254c Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Thu, 23 Sep 2010 12:37:42 -0400
Subject: [PATCH 193/533] Cleaning up testcase's variable names for
 readability.

---
 test/utility.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index 0b07b9fd1..b7f742e0e 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -59,7 +59,7 @@ $(document).ready(function() {
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
     
-    var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"DV-thumbnail\"><img src=\"<%= p %>\" /></div><% }); %>");
+    var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"thumbnail\"><img src=\"<%= p %>\" /></div><% }); %>");
     result = namespaceCollisionTemplate({
       pageCount: 3,
       thumbnails: {
@@ -68,7 +68,7 @@ $(document).ready(function() {
         3: "p3-thumbnail.gif"
       }
     });
-    equals(result, "3 p3-thumbnail.gif <div class=\"DV-thumbnail\"><img src=\"p1-thumbnail.gif\" /></div><div class=\"DV-thumbnail\"><img src=\"p2-thumbnail.gif\" /></div><div class=\"DV-thumbnail\"><img src=\"p3-thumbnail.gif\" /></div>");
+    equals(result, "3 p3-thumbnail.gif <div class=\"thumbnail\"><img src=\"p1-thumbnail.gif\" /></div><div class=\"thumbnail\"><img src=\"p2-thumbnail.gif\" /></div><div class=\"thumbnail\"><img src=\"p3-thumbnail.gif\" /></div>");
 
     var noInterpolateTemplate = _.template("<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
     result = noInterpolateTemplate();

From 902f1192e062f384856dd529d49bb9fb2288557f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 27 Sep 2010 15:45:08 -0400
Subject: [PATCH 194/533] fixing test that tried to load nonexistent images in
 a template.

---
 test/utility.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index b7f742e0e..a38eb1a98 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -58,8 +58,8 @@ $(document).ready(function() {
     var fancyTemplate = _.template("<ul><% for (key in people) { %><li><%= people[key] %></li><% } %></ul>");
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
-    
-    var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"thumbnail\"><img src=\"<%= p %>\" /></div><% }); %>");
+
+    var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"thumbnail\" rel=\"<%= p %>\"></div><% }); %>");
     result = namespaceCollisionTemplate({
       pageCount: 3,
       thumbnails: {
@@ -68,7 +68,7 @@ $(document).ready(function() {
         3: "p3-thumbnail.gif"
       }
     });
-    equals(result, "3 p3-thumbnail.gif <div class=\"thumbnail\"><img src=\"p1-thumbnail.gif\" /></div><div class=\"thumbnail\"><img src=\"p2-thumbnail.gif\" /></div><div class=\"thumbnail\"><img src=\"p3-thumbnail.gif\" /></div>");
+    equals(result, "3 p3-thumbnail.gif <div class=\"thumbnail\" rel=\"p1-thumbnail.gif\"></div><div class=\"thumbnail\" rel=\"p2-thumbnail.gif\"></div><div class=\"thumbnail\" rel=\"p3-thumbnail.gif\"></div>");
 
     var noInterpolateTemplate = _.template("<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
     result = noInterpolateTemplate();

From fbd682d9ec4b9e4bf836de5a055e0913d0e8cb1b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 27 Sep 2010 17:35:43 -0400
Subject: [PATCH 195/533] Fixing Issue #35. newlines in evaluated code.

---
 index.html      |  8 +++-----
 test/utility.js | 12 +++++-------
 underscore.js   | 28 ++++++++++++++--------------
 3 files changed, 22 insertions(+), 26 deletions(-)

diff --git a/index.html b/index.html
index c8ad84562..8a822781d 100644
--- a/index.html
+++ b/index.html
@@ -1065,17 +1065,15 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
       <p>
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.
-        Define <b>start</b> and <b>end</b> tokens, and an <b>interpolate</b> regex
-        to match expressions that should be evaluated and inserted. For example,
-        to perform
+        Define and an <b>interpolate</b> regex, and an (optional) <b>evaluate</b> regex
+        to match expressions that should be inserted and evaluated, respectively. 
+        For example, to perform
         <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a>
         style templating:
       </p>
 
       <pre>
 _.templateSettings = {
-  start       : '{{',
-  end         : '}}',
   interpolate : /\{\{(.+?)\}\}/g
 };
 
diff --git a/test/utility.js b/test/utility.js
index a38eb1a98..8619440cc 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -55,7 +55,9 @@ $(document).ready(function() {
     var result = basicTemplate({thing : 'This'});
     equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
 
-    var fancyTemplate = _.template("<ul><% for (key in people) { %><li><%= people[key] %></li><% } %></ul>");
+    var fancyTemplate = _.template("<ul><% \
+      for (key in people) { \
+    %><li><%= people[key] %></li><% } %></ul>");
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
@@ -84,8 +86,7 @@ $(document).ready(function() {
     equals(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
 
     _.templateSettings = {
-      start       : '{{',
-      end         : '}}',
+      evaluate    : /\{\{(.+?)\}\}/g,
       interpolate : /\{\{=(.+?)\}\}/g
     };
 
@@ -100,8 +101,7 @@ $(document).ready(function() {
     equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     _.templateSettings = {
-      start       : '<?',
-      end         : '?>',
+      evaluate    : /<\?(.+?)\?>/g,
       interpolate : /<\?=(.+?)\?>/g
     };
 
@@ -116,8 +116,6 @@ $(document).ready(function() {
     equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     _.templateSettings = {
-      start       : '{{',
-      end         : '}}',
       interpolate : /\{\{(.+?)\}\}/g
     };
 
diff --git a/underscore.js b/underscore.js
index 6b77e3469..7fa8ee21b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -617,8 +617,7 @@
   // By default, Underscore uses ERB-style template delimiters, change the
   // following template settings to use alternative delimiters.
   _.templateSettings = {
-    start       : '<%',
-    end         : '%>',
+    evaluate    : /<%(.+?)%>/g,
     interpolate : /<%=(.+?)%>/g
   };
 
@@ -628,21 +627,22 @@
   // With alterations for arbitrary delimiters, and to preserve whitespace.
   _.template = function(str, data) {
     var c  = _.templateSettings;
-    var endMatch = new RegExp("'(?=[^"+c.end.substr(0, 1)+"]*"+escapeRegExp(c.end)+")","g");
-    var fn = new Function('obj',
-      'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
+    var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
       'with(obj||{}){__p.push(\'' +
-      str.replace(/\r/g, '\\r')
+      str.split("'").join("\\'")
+         .replace(c.interpolate, function(match, code) {
+           return "'," + code.replace(/\\'/g, "'") + ",'";
+         })
+         .replace(c.evaluate || null, function(match, code) {
+           return "');" + code.replace(/\\'/g, "'")
+                              .replace(/[\r\n\t]/g, ' ') + "__p.push('";
+         })
+         .replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')
          .replace(/\t/g, '\\t')
-         .replace(endMatch,"✄")
-         .split("'").join("\\'")
-         .split("✄").join("'")
-         .replace(c.interpolate, "',$1,'")
-         .split(c.start).join("');")
-         .split(c.end).join("__p.push('")
-         + "');}return __p.join('');");
-    return data ? fn(data) : fn;
+         + "');}return __p.join('');";
+    var func = new Function('obj', tmpl);
+    return data ? func(data) : func;
   };
 
   // ------------------------------- Aliases ----------------------------------

From 3505f795661139c898a66567f5b3e063df0e8591 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Mon, 27 Sep 2010 21:55:49 -0400
Subject: [PATCH 196/533] Replaced `.split("'").join("\\'")` with
 `.replace(/'/g, "\\'")`. http://jsperf.com/split-join-vs-replace

---
 underscore-min.js | 24 ++++++++++++------------
 underscore.js     |  2 +-
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 18fed07f9..3adb33eed 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,18 +1,18 @@
 (function(){var n=this,A=n._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",j=Array.prototype,l=Object.prototype,o=j.slice,B=j.unshift,C=l.toString,p=l.hasOwnProperty,s=j.forEach,t=j.map,u=j.reduce,v=j.reduceRight,w=j.filter,x=j.every,y=j.some,m=j.indexOf,z=j.lastIndexOf;l=Array.isArray;var D=Object.keys,b=function(a){return new k(a)};if(typeof exports!=="undefined")exports._=b;n._=b;b.VERSION="1.1.0";var i=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
-0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e.push(c.call(d,f,g,h))});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u){if(e)c=b.bind(c,e);return a.reduce(c,d)}i(a,function(f,g,h){d=c.call(e,d,f,g,h)});return d};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v){if(e)c=b.bind(c,e);return a.reduceRight(c,d)}a=b.clone(b.toArray(a)).reverse();
-return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){c.call(d,f,g,h)&&e.push(f)});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){!c.call(d,f,g,h)&&e.push(f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});
+0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];i(a,function(f,g,h){e[e.length]=c.call(d,f,g,h)});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u){if(e)c=b.bind(c,e);return a.reduce(c,d)}i(a,function(f,g,h){d=c.call(e,d,f,g,h)});return d};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v){if(e)c=b.bind(c,e);return a.reduceRight(c,d)}a=b.clone(b.toArray(a)).reverse();
+return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;i(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];i(a,function(f,g,h){if(c.call(d,f,g,h))e[e.length]=f});return e};b.reject=function(a,c,d){var e=[];i(a,function(f,g,h){c.call(d,f,g,h)||(e[e.length]=f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;i(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});
 return e};b.some=function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;i(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c)!=-1;var d=false;i(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=b.rest(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,
 a);var e={computed:-Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};i(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){var g=e.criteria,h=f.criteria;return g<h?-1:g>h?
 1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?(e=g+1):(f=g)}return e};b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return o.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=function(a,c,d){return c&&!d?o.call(a,0,c):a[0]};b.rest=function(a,c,d){return o.call(a,b.isUndefined(c)||d?1:c)};b.last=function(a){return a[a.length-1]};
-b.compact=function(a){return b.filter(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c.push(d);return c},[])};b.without=function(a){var c=b.rest(arguments);return b.filter(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,e)))d.push(e);return d},[])};b.intersect=function(a){var c=b.rest(arguments);return b.filter(b.uniq(a),function(d){return b.every(c,
-function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=b.toArray(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,String(e));return d};b.indexOf=function(a,c){if(m&&a.indexOf===m)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(z&&a.lastIndexOf===z)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=b.toArray(arguments),f=e.length<=
-1;a=f?0:e[0];c=f?e[0]:e[1];d=e[2]||1;e=Math.ceil((c-a)/d);if(e<=0)return[];e=new Array(e);f=a;for(var g=0;;f+=d){if((d>0?f-c:c-f)>=0)return e;e[g++]=f}};b.bind=function(a,c){var d=b.rest(arguments,2);return function(){return a.apply(c||{},d.concat(b.toArray(arguments)))}};b.bindAll=function(a){var c=b.rest(arguments);if(c.length==0)c=b.functions(a);i(c,function(d){a[d]=b.bind(a[d],a)});return a};b.memoize=function(a,c){var d={};c=c||b.identity;return function(){var e=c.apply(this,arguments);return e in
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-a.length);var c=[];for(var d in a)p.call(a,d)&&c.push(d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){i(b.rest(arguments),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;
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diff --git a/underscore.js b/underscore.js
index 7fa8ee21b..36100bdde 100644
--- a/underscore.js
+++ b/underscore.js
@@ -629,7 +629,7 @@
     var c  = _.templateSettings;
     var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
       'with(obj||{}){__p.push(\'' +
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+      str.replace(/'/g, "\\'")
          .replace(c.interpolate, function(match, code) {
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From 79600d6e9c6dab514d1713da1137009937963641 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Sun, 3 Oct 2010 16:21:32 -0400
Subject: [PATCH 197/533] Use `slice.call` internally when working with
 `arguments` instead of `_.toArray` or `_.rest`

---
 underscore-min.js | 32 ++++++++++++++++----------------
 underscore.js     | 32 ++++++++++++++++----------------
 2 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 3adb33eed..a20e4e93b 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,18 +1,18 @@
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+b.compact=function(a){return b.filter(a,function(c){return!!c})};b.flatten=function(a){return b.reduce(a,function(c,d){if(b.isArray(d))return c.concat(b.flatten(d));c[c.length]=d;return c},[])};b.without=function(a){var c=i.call(arguments,1);return b.filter(a,function(d){return!b.include(c,d)})};b.uniq=function(a,c){return b.reduce(a,function(d,e,f){if(0==f||(c===true?b.last(d)!=e:!b.include(d,e)))d[d.length]=e;return d},[])};b.intersect=function(a){var c=i.call(arguments,1);return b.filter(b.uniq(a),
+function(d){return b.every(c,function(e){return b.indexOf(e,d)>=0})})};b.zip=function(){for(var a=i.call(arguments),c=b.max(b.pluck(a,"length")),d=new Array(c),e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c){if(n&&a.indexOf===n)return a.indexOf(c);for(var d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,c){if(z&&a.lastIndexOf===z)return a.lastIndexOf(c);for(var d=a.length;d--;)if(a[d]===c)return d;return-1};b.range=function(a,c,d){var e=i.call(arguments),
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+return e in d?d[e]:(d[e]=a.apply(this,arguments))}};b.delay=function(a,c){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(i.call(arguments,1)))};b.wrap=function(a,c){return function(){var d=[a].concat(i.call(arguments));return c.apply(c,d)}};b.compose=function(){var a=i.call(arguments);return function(){for(var c=i.call(arguments),d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=D||function(a){if(b.isArray(a))return b.range(0,
+a.length);var c=[];for(var d in a)if(p.call(a,d))c[c.length]=d;return c};b.values=function(a){return b.map(a,b.identity)};b.functions=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){j(i.call(arguments,1),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){if(b.isArray(a))return a.slice(0);return b.extend({},a)};b.tap=function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;
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-c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=l||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return!!(a&&a.callee)};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===
-+a||C.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){n._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=
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-function(){var d=b.toArray(arguments);B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);i(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=j[a];k.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});i(["concat","join","slice"],function(a){var c=j[a];k.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});k.prototype.chain=function(){this._chain=true;return this};k.prototype.value=
+c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=m||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return!!(a&&a.callee)};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===
++a||C.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){o._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=
+0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){j(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=function(a){var c=F++;return a?a+c:c};b.templateSettings={evaluate:/<%(.+?)%>/g,interpolate:/<%=(.+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||
+null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.contains=b.include;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},E=function(a,c){l.prototype[a]=
+function(){var d=i.call(arguments);B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=k[a];l.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var c=k[a];l.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=
 function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 36100bdde..68b8ff955 100644
--- a/underscore.js
+++ b/underscore.js
@@ -182,7 +182,7 @@
 
   // Invoke a method with arguments on every item in a collection.
   _.invoke = function(obj, method) {
-    var args = _.rest(arguments, 2);
+    var args = slice.call(arguments, 2);
     return _.map(obj, function(value) {
       return (method ? value[method] : value).apply(value, args);
     });
@@ -266,7 +266,7 @@
   // Returns everything but the first entry of the array. Aliased as "tail".
   // Especially useful on the arguments object. Passing an "index" will return
   // the rest of the values in the array from that index onward. The "guard"
-   //check allows it to work with _.map.
+  // check allows it to work with _.map.
   _.rest = function(array, index, guard) {
     return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
   };
@@ -292,7 +292,7 @@
 
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
-    var values = _.rest(arguments);
+    var values = slice.call(arguments, 1);
     return _.filter(array, function(value){ return !_.include(values, value); });
   };
 
@@ -308,7 +308,7 @@
   // Produce an array that contains every item shared between all the
   // passed-in arrays.
   _.intersect = function(array) {
-    var rest = _.rest(arguments);
+    var rest = slice.call(arguments, 1);
     return _.filter(_.uniq(array), function(item) {
       return _.every(rest, function(other) {
         return _.indexOf(other, item) >= 0;
@@ -319,7 +319,7 @@
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
   _.zip = function() {
-    var args = _.toArray(arguments);
+    var args = slice.call(arguments);
     var length = _.max(_.pluck(args, 'length'));
     var results = new Array(length);
     for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
@@ -349,7 +349,7 @@
   // the native Python range() function. See:
   // http://docs.python.org/library/functions.html#range
   _.range = function(start, stop, step) {
-    var a     = _.toArray(arguments);
+    var a     = slice.call(arguments);
     var solo  = a.length <= 1;
     var start = solo ? 0 : a[0], stop = solo ? a[0] : a[1], step = a[2] || 1;
     var len   = Math.ceil((stop - start) / step);
@@ -366,16 +366,16 @@
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
   _.bind = function(func, obj) {
-    var args = _.rest(arguments, 2);
+    var args = slice.call(arguments, 2);
     return function() {
-      return func.apply(obj || {}, args.concat(_.toArray(arguments)));
+      return func.apply(obj || {}, args.concat(slice.call(arguments)));
     };
   };
 
   // Bind all of an object's methods to that object. Useful for ensuring that
   // all callbacks defined on an object belong to it.
   _.bindAll = function(obj) {
-    var funcs = _.rest(arguments);
+    var funcs = slice.call(arguments, 1);
     if (funcs.length == 0) funcs = _.functions(obj);
     each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
     return obj;
@@ -394,14 +394,14 @@
   // Delays a function for the given number of milliseconds, and then calls
   // it with the arguments supplied.
   _.delay = function(func, wait) {
-    var args = _.rest(arguments, 2);
+    var args = slice.call(arguments, 2);
     return setTimeout(function(){ return func.apply(func, args); }, wait);
   };
 
   // Defers a function, scheduling it to run after the current call stack has
   // cleared.
   _.defer = function(func) {
-    return _.delay.apply(_, [func, 1].concat(_.rest(arguments)));
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
   };
 
   // Returns the first function passed as an argument to the second,
@@ -409,7 +409,7 @@
   // conditionally execute the original function.
   _.wrap = function(func, wrapper) {
     return function() {
-      var args = [func].concat(_.toArray(arguments));
+      var args = [func].concat(slice.call(arguments));
       return wrapper.apply(wrapper, args);
     };
   };
@@ -417,9 +417,9 @@
   // Returns a function that is the composition of a list of functions, each
   // consuming the return value of the function that follows.
   _.compose = function() {
-    var funcs = _.toArray(arguments);
+    var funcs = slice.call(arguments);
     return function() {
-      var args = _.toArray(arguments);
+      var args = slice.call(arguments);
       for (var i=funcs.length-1; i >= 0; i--) {
         args = [funcs[i].apply(this, args)];
       }
@@ -450,7 +450,7 @@
 
   // Extend a given object with all the properties in passed-in object(s).
   _.extend = function(obj) {
-    each(_.rest(arguments), function(source) {
+    each(slice.call(arguments, 1), function(source) {
       for (var prop in source) obj[prop] = source[prop];
     });
     return obj;
@@ -673,7 +673,7 @@
   // A method to easily add functions to the OOP wrapper.
   var addToWrapper = function(name, func) {
     wrapper.prototype[name] = function() {
-      var args = _.toArray(arguments);
+      var args = slice.call(arguments);
       unshift.call(args, this._wrapped);
       return result(func.apply(_, args), this._chain);
     };

From 3f49d1df3029ab0d3df44ccfa70f7de386bcae49 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Oct 2010 16:44:56 -0400
Subject: [PATCH 198/533] Tweaking Underscore for docco-mentation.

---
 docs/docco.css       | 185 +++++++++++++++++++
 docs/underscore.html | 417 +++++++++++++++++++++++++++++++++++++++++++
 underscore.js        |  60 ++++---
 3 files changed, 636 insertions(+), 26 deletions(-)
 create mode 100644 docs/docco.css
 create mode 100644 docs/underscore.html

diff --git a/docs/docco.css b/docs/docco.css
new file mode 100644
index 000000000..1ddec8912
--- /dev/null
+++ b/docs/docco.css
@@ -0,0 +1,185 @@
+/*--------------------- Layout and Typography ----------------------------*/
+body {
+  font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
+  font-size: 16px;
+  line-height: 24px;
+  color: #252519;
+  margin: 0; padding: 0;
+}
+a {
+  color: #261a3b;
+}
+  a:visited {
+    color: #261a3b;
+  }
+p {
+  margin: 0 0 15px 0;
+}
+h1, h2, h3, h4, h5, h6 {
+  margin: 40px 0 15px 0;
+}
+  h3, h4, h5, h6 {
+    margin-top: 20px;
+  }
+#container {
+  position: relative;
+}
+#background {
+  position: fixed;
+  top: 0; left: 575px; right: 0; bottom: 0;
+  background: #f5f5ff;
+  border-left: 1px solid #e5e5ee;
+  z-index: -1;
+}
+#jump_to, #jump_page {
+  background: white;
+  -webkit-box-shadow: 0 0 25px #777; -moz-box-shadow: 0 0 25px #777;
+  -webkit-border-bottom-left-radius: 5px; -moz-border-radius-bottomleft: 5px;
+  font: 10px Arial;
+  text-transform: uppercase;
+  cursor: pointer;
+  text-align: right;
+}
+#jump_to, #jump_wrapper {
+  position: fixed;
+  right: 0; top: 0;
+  padding: 5px 10px;
+}
+  #jump_wrapper {
+    padding: 0;
+    display: none;
+  }
+    #jump_to:hover #jump_wrapper {
+      display: block;
+    }
+    #jump_page {
+      padding: 5px 0 3px;
+      margin: 0 0 25px 25px;
+    }
+      #jump_page .source {
+        display: block;
+        padding: 5px 10px;
+        text-decoration: none;
+        border-top: 1px solid #eee;
+      }
+        #jump_page .source:hover {
+          background: #f5f5ff;
+        }
+        #jump_page .source:first-child {
+        }
+table td {
+  border: 0;
+  outline: 0;
+}
+  td.docs, th.docs {
+    max-width: 500px;
+    min-width: 500px;
+    min-height: 5px;
+    padding: 10px 25px 1px 50px;
+    vertical-align: top;
+    text-align: left;
+  }
+    .docs pre {
+      margin: 15px 0 15px;
+      padding-left: 15px;
+    }
+    .docs p tt, .docs p code {
+      background: #f8f8ff;
+      border: 1px solid #dedede;
+      font-size: 12px;
+      padding: 0 0.2em;
+    }
+    .octowrap {
+      position: relative;
+    }
+      .octothorpe {
+        font: 12px Arial;
+        text-decoration: none;
+        color: #454545;
+        position: absolute;
+        top: 3px; left: -20px;
+        padding: 1px 2px;
+        opacity: 0;
+        -webkit-transition: opacity 0.2s linear;
+      }
+        td.docs:hover .octothorpe {
+          opacity: 1;
+        }
+  td.code, th.code {
+    padding: 14px 15px 16px 50px;
+    width: 100%;
+    vertical-align: top;
+    background: #f5f5ff;
+    border-left: 1px solid #e5e5ee;
+  }
+    pre, tt, code {
+      font-size: 12px; line-height: 18px;
+      font-family: Monaco, Consolas, "Lucida Console", monospace;
+      margin: 0; padding: 0;
+    }
+
+
+/*---------------------- Syntax Highlighting -----------------------------*/
+td.linenos { background-color: #f0f0f0; padding-right: 10px; }
+span.lineno { background-color: #f0f0f0; padding: 0 5px 0 5px; }
+body .hll { background-color: #ffffcc }
+body .c { color: #408080; font-style: italic }  /* Comment */
+body .err { border: 1px solid #FF0000 }         /* Error */
+body .k { color: #954121 }                      /* Keyword */
+body .o { color: #666666 }                      /* Operator */
+body .cm { color: #408080; font-style: italic } /* Comment.Multiline */
+body .cp { color: #BC7A00 }                     /* Comment.Preproc */
+body .c1 { color: #408080; font-style: italic } /* Comment.Single */
+body .cs { color: #408080; font-style: italic } /* Comment.Special */
+body .gd { color: #A00000 }                     /* Generic.Deleted */
+body .ge { font-style: italic }                 /* Generic.Emph */
+body .gr { color: #FF0000 }                     /* Generic.Error */
+body .gh { color: #000080; font-weight: bold }  /* Generic.Heading */
+body .gi { color: #00A000 }                     /* Generic.Inserted */
+body .go { color: #808080 }                     /* Generic.Output */
+body .gp { color: #000080; font-weight: bold }  /* Generic.Prompt */
+body .gs { font-weight: bold }                  /* Generic.Strong */
+body .gu { color: #800080; font-weight: bold }  /* Generic.Subheading */
+body .gt { color: #0040D0 }                     /* Generic.Traceback */
+body .kc { color: #954121 }                     /* Keyword.Constant */
+body .kd { color: #954121; font-weight: bold }  /* Keyword.Declaration */
+body .kn { color: #954121; font-weight: bold }  /* Keyword.Namespace */
+body .kp { color: #954121 }                     /* Keyword.Pseudo */
+body .kr { color: #954121; font-weight: bold }  /* Keyword.Reserved */
+body .kt { color: #B00040 }                     /* Keyword.Type */
+body .m { color: #666666 }                      /* Literal.Number */
+body .s { color: #219161 }                      /* Literal.String */
+body .na { color: #7D9029 }                     /* Name.Attribute */
+body .nb { color: #954121 }                     /* Name.Builtin */
+body .nc { color: #0000FF; font-weight: bold }  /* Name.Class */
+body .no { color: #880000 }                     /* Name.Constant */
+body .nd { color: #AA22FF }                     /* Name.Decorator */
+body .ni { color: #999999; font-weight: bold }  /* Name.Entity */
+body .ne { color: #D2413A; font-weight: bold }  /* Name.Exception */
+body .nf { color: #0000FF }                     /* Name.Function */
+body .nl { color: #A0A000 }                     /* Name.Label */
+body .nn { color: #0000FF; font-weight: bold }  /* Name.Namespace */
+body .nt { color: #954121; font-weight: bold }  /* Name.Tag */
+body .nv { color: #19469D }                     /* Name.Variable */
+body .ow { color: #AA22FF; font-weight: bold }  /* Operator.Word */
+body .w { color: #bbbbbb }                      /* Text.Whitespace */
+body .mf { color: #666666 }                     /* Literal.Number.Float */
+body .mh { color: #666666 }                     /* Literal.Number.Hex */
+body .mi { color: #666666 }                     /* Literal.Number.Integer */
+body .mo { color: #666666 }                     /* Literal.Number.Oct */
+body .sb { color: #219161 }                     /* Literal.String.Backtick */
+body .sc { color: #219161 }                     /* Literal.String.Char */
+body .sd { color: #219161; font-style: italic } /* Literal.String.Doc */
+body .s2 { color: #219161 }                     /* Literal.String.Double */
+body .se { color: #BB6622; font-weight: bold }  /* Literal.String.Escape */
+body .sh { color: #219161 }                     /* Literal.String.Heredoc */
+body .si { color: #BB6688; font-weight: bold }  /* Literal.String.Interpol */
+body .sx { color: #954121 }                     /* Literal.String.Other */
+body .sr { color: #BB6688 }                     /* Literal.String.Regex */
+body .s1 { color: #219161 }                     /* Literal.String.Single */
+body .ss { color: #19469D }                     /* Literal.String.Symbol */
+body .bp { color: #954121 }                     /* Name.Builtin.Pseudo */
+body .vc { color: #19469D }                     /* Name.Variable.Class */
+body .vg { color: #19469D }                     /* Name.Variable.Global */
+body .vi { color: #19469D }                     /* Name.Variable.Instance */
+body .il { color: #666666 }                     /* Literal.Number.Integer.Long */
\ No newline at end of file
diff --git a/docs/underscore.html b/docs/underscore.html
new file mode 100644
index 000000000..3420f7b37
--- /dev/null
+++ b/docs/underscore.html
@@ -0,0 +1,417 @@
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <pre><code>(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+Underscore is freely distributable under the terms of the MIT license.
+Portions of Underscore are inspired by or borrowed from Prototype.js,
+Oliver Steele's Functional, and John Resig's Micro-Templating.
+For all details and documentation:
+http://documentcloud.github.com/underscore
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Establish the object that gets thrown to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">StopIteration</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">?</span> <span class="nx">StopIteration</span> <span class="o">:</span> <span class="s1">&#39;__break__&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Quick regexp-escaping function, because JS doesn't have a <code>RegExp.escape()</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">escapeRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">s</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">s</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/([.*+?^${}()|[\]\/\\])/g</span><span class="p">,</span> <span class="s1">&#39;\\$1&#39;</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>                 <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
+      <span class="nx">unshift</span>               <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
+      <span class="nx">toString</span>              <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
+      <span class="nx">hasOwnProperty</span>        <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">,</span>
+      <span class="nx">propertyIsEnumerable</span>  <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">propertyIsEnumerable</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>All ECMA5 native implementations we hope to use are declared here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span>
+    <span class="nx">nativeForEach</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">forEach</span><span class="p">,</span>
+    <span class="nx">nativeMap</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">map</span><span class="p">,</span>
+    <span class="nx">nativeReduce</span>       <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">reduce</span><span class="p">,</span>
+    <span class="nx">nativeReduceRight</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">,</span>
+    <span class="nx">nativeFilter</span>       <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">filter</span><span class="p">,</span>
+    <span class="nx">nativeEvery</span>        <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">every</span><span class="p">,</span>
+    <span class="nx">nativeSome</span>         <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">some</span><span class="p">,</span>
+    <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
+    <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
+    <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>Export Underscore to global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>The cornerstone, an each implementation.
+Handles objects implementing <code>forEach</code>, arrays, and raw objects.
+Delegates to JavaScript 1.6's native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">try</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
+        <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+      <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="p">{</span>
+        <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+      <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+        <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+          <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+        <span class="p">}</span>
+      <span class="p">}</span>
+    <span class="p">}</span> <span class="k">catch</span><span class="p">(</span><span class="nx">e</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">e</span> <span class="o">!=</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">throw</span> <span class="nx">e</span><span class="p">;</span>
+    <span class="p">}</span>
+    <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>Return the results of applying the iterator to each element.
+Delegates to JavaScript 1.6's native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+or <code>foldl</code>. Delegates to JavaScript 1.8's native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduce</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">===</span> <span class="nx">nativeReduce</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
+    <span class="p">}</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-18">#</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>. Uses
+Delegates to JavaScript 1.8's native reduceRight if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
+    <span class="p">}</span>
+    <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-19">#</a>               </div>               <p>Return the first value which passes a truth test.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
+        <span class="nx">result</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+        <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+      <span class="p">}</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-20">#</a>               </div>               <p>Return all the elements that pass a truth test.
+Delegates to JavaScript 1.6's native filter if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-21">#</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-22">#</a>               </div>               <p>Determine whether all of the elements match a truth test.
+Delegates to JavaScript 1.6's native every if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-23">#</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+Delegates to JavaScript 1.6's native some if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-24">#</a>               </div>               <p>Determine if a given value is included in the array or object using '==='.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-25">#</a>               </div>               <p>Invoke a method with arguments on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="p">(</span><span class="nx">method</span> <span class="o">?</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]</span> <span class="o">:</span> <span class="nx">value</span><span class="p">).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+    <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-26">#</a>               </div>               <p>Convenience version of a common use case of map: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-27">#</a>               </div>               <p>Return the maximum item or (item-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">computed</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="o">:</span> <span class="nx">value</span><span class="p">;</span>
+      <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-28">#</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">computed</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="o">:</span> <span class="nx">value</span><span class="p">;</span>
+      <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-29">#</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="p">{</span>
+        <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
+        <span class="nx">criteria</span> <span class="o">:</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span>
+      <span class="p">};</span>
+    <span class="p">}).</span><span class="nx">sort</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">left</span><span class="p">,</span> <span class="nx">right</span><span class="p">)</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
+      <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
+    <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-30">#</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+    <span class="k">while</span> <span class="p">(</span><span class="nx">low</span> <span class="o">&lt;</span> <span class="nx">high</span><span class="p">)</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">mid</span> <span class="o">=</span> <span class="p">(</span><span class="nx">low</span> <span class="o">+</span> <span class="nx">high</span><span class="p">)</span> <span class="o">&gt;&gt;</span> <span class="mi">1</span><span class="p">;</span>
+      <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
+    <span class="p">}</span>
+    <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-31">#</a>               </div>               <p>Convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">iterable</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-32">#</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-33">#</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-34">#</a>               </div>               <p>Get the first element of an array. Passing "n" will return the first N
+values in the array. Aliased as "head". The "guard" check allows it to work
+with _.map.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">n</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-35">#</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as "tail".
+Especially useful on the arguments object. Passing an "index" will return
+the rest of the values in the array from that index onward. The "guard"
+check allows it to work with _.map.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-36">#</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-37">#</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-38">#</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
+      <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+      <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
+    <span class="p">},</span> <span class="p">[]);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-39">#</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">values</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-40">#</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+been sorted, you have the option of using a faster algorithm.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
+      <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
+    <span class="p">},</span> <span class="p">[]);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-41">#</a>               </div>               <p>Produce an array that contains every item shared between all the
+passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
+      <span class="p">});</span>
+    <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-42">#</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
+    <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-43">#</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+we need this function. Return the position of the first occurence of an
+item in an array, or -1 if the item is not included in the array.
+Delegates to JavaScript 1.8's native indexOf if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-44">#</a>               </div>               <p>Delegates to JavaScript 1.6's native lastIndexOf if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+    <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-45">#</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+the native Python range() function. See:
+http://docs.python.org/library/functions.html#range</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">a</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">solo</span>  <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">start</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="nx">a</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">stop</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="nx">a</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">:</span> <span class="nx">a</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">step</span> <span class="o">=</span> <span class="nx">a</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">||</span> <span class="mi">1</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">len</span>   <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">ceil</span><span class="p">((</span><span class="nx">stop</span> <span class="o">-</span> <span class="nx">start</span><span class="p">)</span> <span class="o">/</span> <span class="nx">step</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">len</span> <span class="o">&lt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="p">[];</span>
+    <span class="kd">var</span> <span class="nx">range</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">len</span><span class="p">);</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">start</span><span class="p">,</span> <span class="nx">idx</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="kc">true</span><span class="p">;</span> <span class="nx">i</span> <span class="o">+=</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">((</span><span class="nx">step</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="o">?</span> <span class="nx">i</span> <span class="o">-</span> <span class="nx">stop</span> <span class="o">:</span> <span class="nx">stop</span> <span class="o">-</span> <span class="nx">i</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
+      <span class="nx">range</span><span class="p">[</span><span class="nx">idx</span><span class="o">++</span><span class="p">]</span> <span class="o">=</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="p">}</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-46">#</a>               </div>               <h2>Function Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-47">#</a>               </div>               <p>Create a function bound to a given object (assigning 'this', and arguments,
+optionally). Binding with arguments is also known as 'curry'.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span> <span class="o">||</span> <span class="p">{},</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-48">#</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-49">#</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
+    <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">memo</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-50">#</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-51">#</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-52">#</a>               </div>               <p>Returns the first function passed as an argument to the second,
+allowing you to adjust arguments, run code before and after, and
+conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
+      <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">wrapper</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-53">#</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span><span class="o">=</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span><span class="o">-</span><span class="mi">1</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span>
+        <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">funcs</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">)];</span>
+      <span class="p">}</span>
+      <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-54">#</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-55">#</a>               </div>               <p>Retrieve the names of an object's properties.
+Delegates to ECMA5's native Object.keys</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
+    <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-56">#</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-57">#</a>               </div>               <p>Return a sorted list of the function names available on the object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-58">#</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-59">#</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-60">#</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-61">#</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-62">#</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-63">#</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-64">#</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-65">#</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-66">#</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-67">#</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-68">#</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-69">#</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+      <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-70">#</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-71">#</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-72">#</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-73">#</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-74">#</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-75">#</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-76">#</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-77">#</a>               </div>               <p>Is a given value an array?
+Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">concat</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">unshift</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-78">#</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-79">#</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-80">#</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-81">#</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-82">#</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-83">#</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-84">#</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-85">#</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
+isNaN(undefined) == true, so we make sure it's a number first.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nb">isNaN</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-86">#</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-87">#</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="k">typeof</span> <span class="nx">obj</span> <span class="o">==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-88">#</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-89">#</a>               </div>               <p>Run Underscore.js in noConflict mode, returning the '_' variable to its
+previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
+    <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-90">#</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-91">#</a>               </div>               <p>Run a function n times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-92">#</a>               </div>               <p>Break out of the middle of an iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="k">throw</span> <span class="nx">breaker</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-93">#</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
+      <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
+    <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-94">#</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
+    <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-95">#</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
+    <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%(.+?)%&gt;/g</span><span class="p">,</span>
+    <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=(.+?)%&gt;/g</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-96">#</a>               </div>               <p>JavaScript templating a-la ERB, pilfered from John Resig's
+"Secrets of the JavaScript Ninja", page 83.
+Single-quote fix from Rick Strahl's version.
+With alterations for arbitrary delimiters, and to preserve whitespace.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">tmpl</span> <span class="o">=</span> <span class="s1">&#39;var __p=[],print=function(){__p.push.apply(__p,arguments);};&#39;</span> <span class="o">+</span>
+      <span class="s1">&#39;with(obj||{}){__p.push(\&#39;&#39;</span> <span class="o">+</span>
+      <span class="nx">str</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s2">&quot;\\&#39;&quot;</span><span class="p">)</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">interpolate</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+           <span class="k">return</span> <span class="s2">&quot;&#39;,&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;,&#39;&quot;</span><span class="p">;</span>
+         <span class="p">})</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">evaluate</span> <span class="o">||</span> <span class="kc">null</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+           <span class="k">return</span> <span class="s2">&quot;&#39;);&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
+                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;__p.push(&#39;&quot;</span><span class="p">;</span>
+         <span class="p">})</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\r/g</span><span class="p">,</span> <span class="s1">&#39;\\r&#39;</span><span class="p">)</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/g</span><span class="p">,</span> <span class="s1">&#39;\\n&#39;</span><span class="p">)</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\t/g</span><span class="p">,</span> <span class="s1">&#39;\\t&#39;</span><span class="p">)</span>
+         <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-97">#</a>               </div>               <h2>Aliases:</h2>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">each</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span>    <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span>       <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span>    <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">select</span>   <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">all</span>      <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">any</span>      <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">head</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">first</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">;</span>
+  <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-98">#</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-99">#</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+can be used OO-style. This wrapper holds altered versions of all the
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-100">#</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-101">#</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+      <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-102">#</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-103">#</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
+    <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
+    <span class="p">};</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-104">#</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
+    <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
+    <span class="p">};</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-105">#</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-106">#</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+  <span class="p">};</span>
+
+<span class="p">})();</span>
+
+</pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 36100bdde..31b769950 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,24 +1,25 @@
-// Underscore.js
-// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
-// Underscore is freely distributable under the terms of the MIT license.
-// Portions of Underscore are inspired by or borrowed from Prototype.js,
-// Oliver Steele's Functional, and John Resig's Micro-Templating.
-// For all details and documentation:
-// http://documentcloud.github.com/underscore
+//     (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore is freely distributable under the terms of the MIT license.
+//     Portions of Underscore are inspired by or borrowed from Prototype.js,
+//     Oliver Steele's Functional, and John Resig's Micro-Templating.
+//     For all details and documentation:
+//     http://documentcloud.github.com/underscore
 
 (function() {
-  // ------------------------- Baseline setup ---------------------------------
 
-  // Establish the root object, "window" in the browser, or "global" on the server.
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
   var root = this;
 
-  // Save the previous value of the "_" variable.
+  // Save the previous value of the `_` variable.
   var previousUnderscore = root._;
 
   // Establish the object that gets thrown to break out of a loop iteration.
   var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
 
-  // Quick regexp-escaping function, because JS doesn't have RegExp.escape().
+  // Quick regexp-escaping function, because JS doesn't have a `RegExp.escape()`.
   var escapeRegExp = function(s) { return s.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1'); };
 
   // Save bytes in the minified (but not gzipped) version:
@@ -48,20 +49,21 @@
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
-  // Export the Underscore object for CommonJS.
+  // Export the Underscore object for **CommonJS**.
   if (typeof exports !== 'undefined') exports._ = _;
 
-  // Export underscore to global scope.
+  // Export Underscore to global scope.
   root._ = _;
 
   // Current version.
   _.VERSION = '1.1.0';
 
-  // ------------------------ Collection Functions: ---------------------------
+  // Collection Functions
+  // --------------------
 
   // The cornerstone, an each implementation.
-  // Handles objects implementing forEach, arrays, and raw objects.
-  // Delegates to JavaScript 1.6's native forEach if available.
+  // Handles objects implementing `forEach`, arrays, and raw objects.
+  // Delegates to JavaScript 1.6's native `forEach` if available.
   var each = _.forEach = function(obj, iterator, context) {
     try {
       if (nativeForEach && obj.forEach === nativeForEach) {
@@ -80,7 +82,7 @@
   };
 
   // Return the results of applying the iterator to each element.
-  // Delegates to JavaScript 1.6's native map if available.
+  // Delegates to JavaScript 1.6's native `map` if available.
   _.map = function(obj, iterator, context) {
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
@@ -90,8 +92,8 @@
     return results;
   };
 
-  // Reduce builds up a single result from a list of values, aka inject, or foldl.
-  // Delegates to JavaScript 1.8's native reduce if available.
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to JavaScript 1.8's native `reduce` if available.
   _.reduce = function(obj, iterator, memo, context) {
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
@@ -103,7 +105,7 @@
     return memo;
   };
 
-  // The right-associative version of reduce, also known as foldr. Uses
+  // The right-associative version of reduce, also known as `foldr`. Uses
   // Delegates to JavaScript 1.8's native reduceRight if available.
   _.reduceRight = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
@@ -254,7 +256,8 @@
     return _.toArray(obj).length;
   };
 
-  // -------------------------- Array Functions: ------------------------------
+  // Array Functions
+  // ---------------
 
   // Get the first element of an array. Passing "n" will return the first N
   // values in the array. Aliased as "head". The "guard" check allows it to work
@@ -361,7 +364,8 @@
     }
   };
 
-  // ----------------------- Function Functions: ------------------------------
+  // Function Functions
+  // ------------------
 
   // Create a function bound to a given object (assigning 'this', and arguments,
   // optionally). Binding with arguments is also known as 'curry'.
@@ -427,7 +431,8 @@
     };
   };
 
-  // ------------------------- Object Functions: ------------------------------
+  // Object Functions
+  // ----------------
 
   // Retrieve the names of an object's properties.
   // Delegates to ECMA5's native Object.keys
@@ -574,7 +579,8 @@
     return typeof obj == 'undefined';
   };
 
-  // -------------------------- Utility Functions: ----------------------------
+  // Utility Functions
+  // -----------------
 
   // Run Underscore.js in noConflict mode, returning the '_' variable to its
   // previous owner. Returns a reference to the Underscore object.
@@ -645,7 +651,8 @@
     return data ? func(data) : func;
   };
 
-  // ------------------------------- Aliases ----------------------------------
+  // Aliases:
+  // --------
 
   _.each     = _.forEach;
   _.foldl    = _.inject       = _.reduce;
@@ -658,7 +665,8 @@
   _.tail     = _.rest;
   _.methods  = _.functions;
 
-  // ------------------------ Setup the OOP Wrapper: --------------------------
+  // The OOP Wrapper
+  // ---------------
 
   // If Underscore is called as a function, it returns a wrapped object that
   // can be used OO-style. This wrapper holds altered versions of all the

From 17e21da7156ea61cb31b94ed51b4e18198fcd3c4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Oct 2010 16:57:39 -0400
Subject: [PATCH 199/533] adding a doc task

---
 Rakefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Rakefile b/Rakefile
index 721c294b3..89e363d6b 100644
--- a/Rakefile
+++ b/Rakefile
@@ -8,3 +8,8 @@ task :build do
   File.open('underscore-min.js', 'w') {|f| f.write(min) }
 end
 
+desc "Build the docco documentation"
+task :doc do
+  sh "docco underscore.js"
+end
+

From 5984be70c1225f9165b5392d73f14be3ca6b5145 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Oct 2010 17:05:03 -0400
Subject: [PATCH 200/533] adding m flag to default templateSettings regexes.

---
 test/utility.js | 4 +++-
 underscore.js   | 4 ++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index 8619440cc..94f225a80 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -79,7 +79,9 @@ $(document).ready(function() {
     var quoteTemplate = _.template("It's its, not it's");
     equals(quoteTemplate({}), "It's its, not it's");
 
-    var quoteInStatementAndBody = _.template("<% if(foo == 'bar'){ %>Statement quotes and 'quotes'.<% } %>");
+    var quoteInStatementAndBody = _.template("<%\
+      if(foo == 'bar'){ \
+    %>Statement quotes and 'quotes'.<% } %>");
     equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.');
diff --git a/underscore.js b/underscore.js
index 43caa3afa..3c1d4d844 100644
--- a/underscore.js
+++ b/underscore.js
@@ -623,8 +623,8 @@
   // By default, Underscore uses ERB-style template delimiters, change the
   // following template settings to use alternative delimiters.
   _.templateSettings = {
-    evaluate    : /<%(.+?)%>/g,
-    interpolate : /<%=(.+?)%>/g
+    evaluate    : /<%(.+?)%>/gm,
+    interpolate : /<%=(.+?)%>/gm
   };
 
   // JavaScript templating a-la ERB, pilfered from John Resig's

From 348147d8fbd53619ee4951df4bc0c3d5df6faea5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Oct 2010 17:10:44 -0400
Subject: [PATCH 201/533] better default multiline-aware templates

---
 test/test.html  | 7 +++++++
 test/utility.js | 3 +++
 underscore.js   | 4 ++--
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/test/test.html b/test/test.html
index c174ea0a6..1ac56f9be 100644
--- a/test/test.html
+++ b/test/test.html
@@ -30,5 +30,12 @@
     find the intersection of two thousand-element arrays in one second.
   </h2>
   <br />
+
+  <script type="text/html" id="template">
+      <%
+      if (data) { data += 12345; }; %>
+      <li><%= data %></li>
+  </script>a
+
 </body>
 </html>
diff --git a/test/utility.js b/test/utility.js
index 94f225a80..fdd9b5cec 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -87,6 +87,9 @@ $(document).ready(function() {
     var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.');
     equals(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
 
+    var fromHTML = _.template($('#template').html());
+    equals(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
+
     _.templateSettings = {
       evaluate    : /\{\{(.+?)\}\}/g,
       interpolate : /\{\{=(.+?)\}\}/g
diff --git a/underscore.js b/underscore.js
index 3c1d4d844..31b0b060e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -623,8 +623,8 @@
   // By default, Underscore uses ERB-style template delimiters, change the
   // following template settings to use alternative delimiters.
   _.templateSettings = {
-    evaluate    : /<%(.+?)%>/gm,
-    interpolate : /<%=(.+?)%>/gm
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g
   };
 
   // JavaScript templating a-la ERB, pilfered from John Resig's

From a80550ccd253f4617c2fe5cbe339086da407cde2 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Oct 2010 17:41:11 -0400
Subject: [PATCH 202/533] Tweaks to the Annotated Underscore.

---
 docs/docco.css       |   8 +-
 docs/underscore.html | 233 ++++++++++++++++++++++---------------------
 index.html           |   8 +-
 underscore.js        |  73 +++++++-------
 4 files changed, 164 insertions(+), 158 deletions(-)

diff --git a/docs/docco.css b/docs/docco.css
index 1ddec8912..76e818b38 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -89,10 +89,10 @@ table td {
       font-size: 12px;
       padding: 0 0.2em;
     }
-    .octowrap {
+    .pilwrap {
       position: relative;
     }
-      .octothorpe {
+      .pilcrow {
         font: 12px Arial;
         text-decoration: none;
         color: #454545;
@@ -102,11 +102,11 @@ table td {
         opacity: 0;
         -webkit-transition: opacity 0.2s linear;
       }
-        td.docs:hover .octothorpe {
+        td.docs:hover .pilcrow {
           opacity: 1;
         }
   td.code, th.code {
-    padding: 14px 15px 16px 50px;
+    padding: 14px 15px 16px 25px;
     width: 100%;
     vertical-align: top;
     background: #f5f5ff;
diff --git a/docs/underscore.html b/docs/underscore.html
index 3420f7b37..a04723c8e 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,14 +1,15 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-1">#</a>               </div>               <pre><code>(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the terms of the MIT license.
 Portions of Underscore are inspired by or borrowed from Prototype.js,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
-</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-2">#</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-3">#</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-4">#</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-5">#</a>               </div>               <p>Establish the object that gets thrown to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">StopIteration</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">?</span> <span class="nx">StopIteration</span> <span class="o">:</span> <span class="s1">&#39;__break__&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-6">#</a>               </div>               <p>Quick regexp-escaping function, because JS doesn't have a <code>RegExp.escape()</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">escapeRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">s</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">s</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/([.*+?^${}()|[\]\/\\])/g</span><span class="p">,</span> <span class="s1">&#39;\\$1&#39;</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-7">#</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-8">#</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>                 <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets thrown to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">StopIteration</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">?</span> <span class="nx">StopIteration</span> <span class="o">:</span> <span class="s1">&#39;__break__&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Quick regexp-escaping function, because JS doesn't have a <code>RegExp.escape()</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">escapeRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">s</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">s</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/([.*+?^${}()|[\]\/\\])/g</span><span class="p">,</span> <span class="s1">&#39;\\$1&#39;</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>                 <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
       <span class="nx">unshift</span>               <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
       <span class="nx">toString</span>              <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
       <span class="nx">hasOwnProperty</span>        <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">,</span>
-      <span class="nx">propertyIsEnumerable</span>  <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">propertyIsEnumerable</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-9">#</a>               </div>               <p>All ECMA5 native implementations we hope to use are declared here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span>
+      <span class="nx">propertyIsEnumerable</span>  <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">propertyIsEnumerable</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
+are declared here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span>
     <span class="nx">nativeForEach</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">forEach</span><span class="p">,</span>
     <span class="nx">nativeMap</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">map</span><span class="p">,</span>
     <span class="nx">nativeReduce</span>       <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">reduce</span><span class="p">,</span>
@@ -19,9 +20,9 @@ http://documentcloud.github.com/underscore
     <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
-    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-10">#</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-11">#</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-12">#</a>               </div>               <p>Export Underscore to global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-13">#</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-14">#</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-15">#</a>               </div>               <p>The cornerstone, an each implementation.
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
-Delegates to JavaScript 1.6's native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">try</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -36,16 +37,16 @@ Delegates to JavaScript 1.6's native <code>forEach</code> if available.</p>
       <span class="k">if</span> <span class="p">(</span><span class="nx">e</span> <span class="o">!=</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">throw</span> <span class="nx">e</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-16">#</a>               </div>               <p>Return the results of applying the iterator to each element.
-Delegates to JavaScript 1.6's native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-17">#</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
-or <code>foldl</code>. Delegates to JavaScript 1.8's native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduce</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">===</span> <span class="nx">nativeReduce</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
@@ -54,15 +55,15 @@ or <code>foldl</code>. Delegates to JavaScript 1.8's native <code>reduce</code>
       <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-18">#</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>. Uses
-Delegates to JavaScript 1.8's native reduceRight if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>. Uses
+Delegates to <strong>ECMAScript 5</strong>'s native reduceRight if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-19">#</a>               </div>               <p>Return the first value which passes a truth test.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return the first value which passes a truth test.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
@@ -71,22 +72,22 @@ Delegates to JavaScript 1.8's native reduceRight if available.</p>             <
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-20">#</a>               </div>               <p>Return all the elements that pass a truth test.
-Delegates to JavaScript 1.6's native filter if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-21">#</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-22">#</a>               </div>               <p>Determine whether all of the elements match a truth test.
-Delegates to JavaScript 1.6's native every if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
@@ -94,8 +95,8 @@ Delegates to JavaScript 1.6's native every if available.</p>             </td>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-23">#</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
-Delegates to JavaScript 1.6's native some if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
@@ -103,21 +104,21 @@ Delegates to JavaScript 1.6's native some if available.</p>             </td>
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-24">#</a>               </div>               <p>Determine if a given value is included in the array or object using '==='.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-25">#</a>               </div>               <p>Invoke a method with arguments on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">(</span><span class="nx">method</span> <span class="o">?</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]</span> <span class="o">:</span> <span class="nx">value</span><span class="p">).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-26">#</a>               </div>               <p>Convenience version of a common use case of map: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-27">#</a>               </div>               <p>Return the maximum item or (item-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -125,7 +126,7 @@ Delegates to JavaScript 1.6's native some if available.</p>             </td>
       <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-28">#</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -133,7 +134,7 @@ Delegates to JavaScript 1.6's native some if available.</p>             </td>
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-29">#</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -143,7 +144,7 @@ Delegates to JavaScript 1.6's native some if available.</p>             </td>
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-30">#</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -152,73 +153,73 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-31">#</a>               </div>               <p>Convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">iterable</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-32">#</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-33">#</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-34">#</a>               </div>               <p>Get the first element of an array. Passing "n" will return the first N
-values in the array. Aliased as "head". The "guard" check allows it to work
-with _.map.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
+with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">n</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-35">#</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as "tail".
-Especially useful on the arguments object. Passing an "index" will return
-the rest of the values in the array from that index onward. The "guard"
-check allows it to work with _.map.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+Especially useful on the arguments object. Passing an <strong>index</strong> will return
+the rest of the values in the array from that index onward. The <strong>guard</strong>
+check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-36">#</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-37">#</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-38">#</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-39">#</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">values</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-40">#</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-41">#</a>               </div>               <p>Produce an array that contains every item shared between all the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
 passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-42">#</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-43">#</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
 we need this function. Return the position of the first occurence of an
 item in an array, or -1 if the item is not included in the array.
-Delegates to JavaScript 1.8's native indexOf if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-44">#</a>               </div>               <p>Delegates to JavaScript 1.6's native lastIndexOf if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-45">#</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
-the native Python range() function. See:
-http://docs.python.org/library/functions.html#range</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">a</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+the native Python <code>range()</code> function. See
+<a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">a</span>     <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">solo</span>  <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">start</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="nx">a</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">stop</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="nx">a</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">:</span> <span class="nx">a</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">step</span> <span class="o">=</span> <span class="nx">a</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">||</span> <span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">len</span>   <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">ceil</span><span class="p">((</span><span class="nx">stop</span> <span class="o">-</span> <span class="nx">start</span><span class="p">)</span> <span class="o">/</span> <span class="nx">step</span><span class="p">);</span>
@@ -228,136 +229,136 @@ http://docs.python.org/library/functions.html#range</p>             </td>
       <span class="k">if</span> <span class="p">((</span><span class="nx">step</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="o">?</span> <span class="nx">i</span> <span class="o">-</span> <span class="nx">stop</span> <span class="o">:</span> <span class="nx">stop</span> <span class="o">-</span> <span class="nx">i</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
       <span class="nx">range</span><span class="p">[</span><span class="nx">idx</span><span class="o">++</span><span class="p">]</span> <span class="o">=</span> <span class="nx">i</span><span class="p">;</span>
     <span class="p">}</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-46">#</a>               </div>               <h2>Function Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-47">#</a>               </div>               <p>Create a function bound to a given object (assigning 'this', and arguments,
-optionally). Binding with arguments is also known as 'curry'.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <h2>Function Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+optionally). Binding with arguments is also known as <code>curry</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span> <span class="o">||</span> <span class="p">{},</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span> <span class="o">||</span> <span class="p">{},</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-48">#</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-49">#</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">memo</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-50">#</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-51">#</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-52">#</a>               </div>               <p>Returns the first function passed as an argument to the second,
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">wrapper</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-53">#</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span><span class="o">=</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span><span class="o">-</span><span class="mi">1</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">funcs</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">)];</span>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-54">#</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-55">#</a>               </div>               <p>Retrieve the names of an object's properties.
-Delegates to ECMA5's native Object.keys</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-56">#</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-57">#</a>               </div>               <p>Return a sorted list of the function names available on the object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-58">#</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">(</span><span class="nx">arguments</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-59">#</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-60">#</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
-The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+The primary purpose of this method is to "tap into" a method chain, in
+order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-61">#</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-62">#</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-63">#</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-64">#</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-65">#</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-66">#</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-67">#</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-68">#</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-69">#</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-70">#</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-71">#</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-72">#</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-73">#</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-74">#</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-75">#</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-76">#</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-77">#</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">concat</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">unshift</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-78">#</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-79">#</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-80">#</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-81">#</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-82">#</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-83">#</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-84">#</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-85">#</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
 isNaN(undefined) == true, so we make sure it's a number first.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nb">isNaN</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-86">#</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-87">#</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">typeof</span> <span class="nx">obj</span> <span class="o">==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-88">#</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-89">#</a>               </div>               <p>Run Underscore.js in noConflict mode, returning the '_' variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-90">#</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-91">#</a>               </div>               <p>Run a function n times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-92">#</a>               </div>               <p>Break out of the middle of an iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Break out of the middle of an iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">throw</span> <span class="nx">breaker</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-93">#</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-94">#</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-95">#</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
-    <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%(.+?)%&gt;/g</span><span class="p">,</span>
-    <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=(.+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-96">#</a>               </div>               <p>JavaScript templating a-la ERB, pilfered from John Resig's
-"Secrets of the JavaScript Ninja", page 83.
-Single-quote fix from Rick Strahl's version.
-With alterations for arbitrary delimiters, and to preserve whitespace.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
+    <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+Underscore templating handles arbitrary delimiters, preserves whitespace,
+and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">tmpl</span> <span class="o">=</span> <span class="s1">&#39;var __p=[],print=function(){__p.push.apply(__p,arguments);};&#39;</span> <span class="o">+</span>
       <span class="s1">&#39;with(obj||{}){__p.push(\&#39;&#39;</span> <span class="o">+</span>
@@ -375,7 +376,7 @@ With alterations for arbitrary delimiters, and to preserve whitespace.</p>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-97">#</a>               </div>               <h2>Aliases:</h2>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">each</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <h2>Aliases:</h2>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">each</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span>    <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span>       <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span>    <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">select</span>   <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">;</span>
@@ -384,31 +385,31 @@ With alterations for arbitrary delimiters, and to preserve whitespace.</p>
   <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">head</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">first</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-98">#</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-99">#</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-100">#</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-101">#</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-102">#</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-103">#</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-104">#</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-105">#</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="octowrap">                 <a class="octothorpe" href="#section-106">#</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 8a822781d..cea7453b9 100644
--- a/index.html
+++ b/index.html
@@ -96,10 +96,14 @@
       A complete <a href="test/test.html">Test &amp; Benchmark Suite</a>
       is included for your perusal.
     </p>
+    
+    <p>
+      You may also read through the <a href="docs/underscore.html">annotated source code</a>.
+    </p>
 
     <p>
-      The unabridged source code is
-      <a href="http://github.com/documentcloud/underscore/">available on GitHub</a>.
+      The project is
+      <a href="http://github.com/documentcloud/underscore/">hosted on GitHub</a>.
     </p>
 
     <p>
diff --git a/underscore.js b/underscore.js
index 31b0b060e..7579aea72 100644
--- a/underscore.js
+++ b/underscore.js
@@ -32,7 +32,8 @@
       hasOwnProperty        = ObjProto.hasOwnProperty,
       propertyIsEnumerable  = ObjProto.propertyIsEnumerable;
 
-  // All ECMA5 native implementations we hope to use are declared here.
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
   var
     nativeForEach      = ArrayProto.forEach,
     nativeMap          = ArrayProto.map,
@@ -52,7 +53,7 @@
   // Export the Underscore object for **CommonJS**.
   if (typeof exports !== 'undefined') exports._ = _;
 
-  // Export Underscore to global scope.
+  // Export Underscore to the global scope.
   root._ = _;
 
   // Current version.
@@ -61,9 +62,9 @@
   // Collection Functions
   // --------------------
 
-  // The cornerstone, an each implementation.
+  // The cornerstone, an `each` implementation.
   // Handles objects implementing `forEach`, arrays, and raw objects.
-  // Delegates to JavaScript 1.6's native `forEach` if available.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.forEach = function(obj, iterator, context) {
     try {
       if (nativeForEach && obj.forEach === nativeForEach) {
@@ -82,7 +83,7 @@
   };
 
   // Return the results of applying the iterator to each element.
-  // Delegates to JavaScript 1.6's native `map` if available.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
   _.map = function(obj, iterator, context) {
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
@@ -93,7 +94,7 @@
   };
 
   // **Reduce** builds up a single result from a list of values, aka `inject`,
-  // or `foldl`. Delegates to JavaScript 1.8's native `reduce` if available.
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = function(obj, iterator, memo, context) {
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
@@ -106,7 +107,7 @@
   };
 
   // The right-associative version of reduce, also known as `foldr`. Uses
-  // Delegates to JavaScript 1.8's native reduceRight if available.
+  // Delegates to **ECMAScript 5**'s native reduceRight if available.
   _.reduceRight = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
@@ -129,7 +130,7 @@
   };
 
   // Return all the elements that pass a truth test.
-  // Delegates to JavaScript 1.6's native filter if available.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
   _.filter = function(obj, iterator, context) {
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
@@ -149,7 +150,7 @@
   };
 
   // Determine whether all of the elements match a truth test.
-  // Delegates to JavaScript 1.6's native every if available.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
   _.every = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
@@ -161,7 +162,7 @@
   };
 
   // Determine if at least one element in the object matches a truth test.
-  // Delegates to JavaScript 1.6's native some if available.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
   _.some = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
@@ -172,7 +173,7 @@
     return result;
   };
 
-  // Determine if a given value is included in the array or object using '==='.
+  // Determine if a given value is included in the array or object using `===`.
   _.include = function(obj, target) {
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     var found = false;
@@ -182,7 +183,7 @@
     return found;
   };
 
-  // Invoke a method with arguments on every item in a collection.
+  // Invoke a method (with arguments) on every item in a collection.
   _.invoke = function(obj, method) {
     var args = slice.call(arguments, 2);
     return _.map(obj, function(value) {
@@ -190,12 +191,12 @@
     });
   };
 
-  // Convenience version of a common use case of map: fetching a property.
+  // Convenience version of a common use case of `map`: fetching a property.
   _.pluck = function(obj, key) {
     return _.map(obj, function(value){ return value[key]; });
   };
 
-  // Return the maximum item or (item-based computation).
+  // Return the maximum element or (element-based computation).
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
     var result = {computed : -Infinity};
@@ -242,7 +243,7 @@
     return low;
   };
 
-  // Convert anything iterable into a real, live array.
+  // Safely convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
     if (!iterable)                return [];
     if (iterable.toArray)         return iterable.toArray();
@@ -259,17 +260,17 @@
   // Array Functions
   // ---------------
 
-  // Get the first element of an array. Passing "n" will return the first N
-  // values in the array. Aliased as "head". The "guard" check allows it to work
-  // with _.map.
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head`. The **guard** check allows it to work
+  // with `_.map`.
   _.first = function(array, n, guard) {
     return n && !guard ? slice.call(array, 0, n) : array[0];
   };
 
-  // Returns everything but the first entry of the array. Aliased as "tail".
-  // Especially useful on the arguments object. Passing an "index" will return
-  // the rest of the values in the array from that index onward. The "guard"
-  // check allows it to work with _.map.
+  // Returns everything but the first entry of the array. Aliased as `tail`.
+  // Especially useful on the arguments object. Passing an **index** will return
+  // the rest of the values in the array from that index onward. The **guard**
+  // check allows it to work with `_.map`.
   _.rest = function(array, index, guard) {
     return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
   };
@@ -332,7 +333,7 @@
   // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
   // we need this function. Return the position of the first occurence of an
   // item in an array, or -1 if the item is not included in the array.
-  // Delegates to JavaScript 1.8's native indexOf if available.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
   _.indexOf = function(array, item) {
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
     for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
@@ -340,7 +341,7 @@
   };
 
 
-  // Delegates to JavaScript 1.6's native lastIndexOf if available.
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
   _.lastIndexOf = function(array, item) {
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
@@ -349,8 +350,8 @@
   };
 
   // Generate an integer Array containing an arithmetic progression. A port of
-  // the native Python range() function. See:
-  // http://docs.python.org/library/functions.html#range
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
   _.range = function(start, stop, step) {
     var a     = slice.call(arguments);
     var solo  = a.length <= 1;
@@ -367,8 +368,8 @@
   // Function Functions
   // ------------------
 
-  // Create a function bound to a given object (assigning 'this', and arguments,
-  // optionally). Binding with arguments is also known as 'curry'.
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Binding with arguments is also known as `curry`.
   _.bind = function(func, obj) {
     var args = slice.call(arguments, 2);
     return function() {
@@ -435,7 +436,7 @@
   // ----------------
 
   // Retrieve the names of an object's properties.
-  // Delegates to ECMA5's native Object.keys
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
   _.keys = nativeKeys || function(obj) {
     if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
@@ -468,7 +469,8 @@
   };
 
   // Invokes interceptor with the obj, and then returns obj.
-  // The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
   _.tap = function(obj, interceptor) {
     interceptor(obj);
     return obj;
@@ -582,7 +584,7 @@
   // Utility Functions
   // -----------------
 
-  // Run Underscore.js in noConflict mode, returning the '_' variable to its
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
   // previous owner. Returns a reference to the Underscore object.
   _.noConflict = function() {
     root._ = previousUnderscore;
@@ -594,7 +596,7 @@
     return value;
   };
 
-  // Run a function n times.
+  // Run a function **n** times.
   _.times = function (n, iterator, context) {
     for (var i = 0; i < n; i++) iterator.call(context, i);
   };
@@ -627,10 +629,9 @@
     interpolate : /<%=([\s\S]+?)%>/g
   };
 
-  // JavaScript templating a-la ERB, pilfered from John Resig's
-  // "Secrets of the JavaScript Ninja", page 83.
-  // Single-quote fix from Rick Strahl's version.
-  // With alterations for arbitrary delimiters, and to preserve whitespace.
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
   _.template = function(str, data) {
     var c  = _.templateSettings;
     var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +

From faa672ecd9613cbc467510e684826fd071983ae7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 5 Oct 2010 17:52:36 -0400
Subject: [PATCH 203/533] Underscore 1.1.1

---
 README               |  2 +-
 docs/underscore.html |  2 +-
 index.html           | 11 +++++++++--
 package.json         |  2 +-
 test/utility.js      |  6 ++++--
 underscore-min.js    | 24 ++++++++++++------------
 underscore.js        |  2 +-
 7 files changed, 29 insertions(+), 20 deletions(-)

diff --git a/README b/README
index 716757d52..693e316f5 100644
--- a/README
+++ b/README
@@ -20,6 +20,7 @@ Many thanks to our contributors:
 
   Dmitry Baranovskiy
   Tim Caswell
+  Samuel Clay
   Mathieu D'Amours
   Rick Fletcher
   Mike Frawley
@@ -31,4 +32,3 @@ Many thanks to our contributors:
   Luke Sutton
   Ryan Tenney
   John Wright
-  Samuel Clay
diff --git a/docs/underscore.html b/docs/underscore.html
index a04723c8e..32f843c57 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -20,7 +20,7 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
-    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation.
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">try</span> <span class="p">{</span>
diff --git a/index.html b/index.html
index cea7453b9..757ed0c6f 100644
--- a/index.html
+++ b/index.html
@@ -114,11 +114,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.0)</a></td>
+        <td><a href="underscore.js">Development Version (1.1.1)</a></td>
         <td><i>25kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.0)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.1)</a></td>
         <td><i>3kb, Packed and Gzipped</i></td>
       </tr>
     </table>
@@ -1165,6 +1165,13 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.1.1</b><br />
+        Improved the speed of <tt>_.template</tt>, and its handling of multiline
+        interpolations. Ryan Tenney contributed optimizations to many Underscore 
+        functions. An annotated version of the source code is now available.
+      </p>
+      
       <p>
         <b class="header">1.1.0</b><br />
         The method signature of <tt>_.reduce</tt> has been changed to match
diff --git a/package.json b/package.json
index f00dacc03..59f200734 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "lib"           : ".",
   "main"          : "underscore.js",
-  "version"       : "1.1.0"
+  "version"       : "1.1.1"
 }
diff --git a/test/utility.js b/test/utility.js
index fdd9b5cec..8013a6a87 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -87,8 +87,10 @@ $(document).ready(function() {
     var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.');
     equals(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
 
-    var fromHTML = _.template($('#template').html());
-    equals(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
+    if (!$.browser.msie) {
+      var fromHTML = _.template($('#template').html());
+      equals(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
+    }
 
     _.templateSettings = {
       evaluate    : /\{\{(.+?)\}\}/g,
diff --git a/underscore-min.js b/underscore-min.js
index a20e4e93b..4dc24bfbf 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,18 +1,18 @@
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+c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return false;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;
+return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=m||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return!!(a&&a.callee)};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||C.call(a)===
+"[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=function(){o._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,
+e)};b.breakLoop=function(){throw r;};b.mixin=function(a){j(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=function(a){var c=F++;return a?a+c:c};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,
+function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};b.each=b.forEach;b.foldl=b.inject=b.reduce;b.foldr=b.reduceRight;b.select=b.filter;b.all=b.every;b.any=b.some;b.contains=b.include;b.head=b.first;b.tail=b.rest;b.methods=b.functions;var l=function(a){this._wrapped=a},q=function(a,c){return c?b(a).chain():a},E=function(a,c){l.prototype[a]=
 function(){var d=i.call(arguments);B.call(d,this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=k[a];l.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var c=k[a];l.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=
 function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 7579aea72..c81fe1b15 100644
--- a/underscore.js
+++ b/underscore.js
@@ -57,7 +57,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.1.0';
+  _.VERSION = '1.1.1';
 
   // Collection Functions
   // --------------------

From cd7c9ee9646bcee3d484f636e5203ba7ea453a4c Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 20:28:23 -0400
Subject: [PATCH 204/533] Simplify `_.clone` a little bit.

---
 underscore.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index c81fe1b15..0b4989e68 100644
--- a/underscore.js
+++ b/underscore.js
@@ -464,8 +464,7 @@
 
   // Create a (shallow-cloned) duplicate of an object.
   _.clone = function(obj) {
-    if (_.isArray(obj)) return obj.slice(0);
-    return _.extend({}, obj);
+    return _.isArray(obj) ? obj.slice(0) : _.extend({}, obj);
   };
 
   // Invokes interceptor with the obj, and then returns obj.

From 4484002f7e0f0b31dde48bf162ef4d5216d32bcf Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 20:30:57 -0400
Subject: [PATCH 205/533] `escapeRegExp` is no longer used.

---
 underscore.js | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/underscore.js b/underscore.js
index 0b4989e68..bb4ea3bfd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -19,9 +19,6 @@
   // Establish the object that gets thrown to break out of a loop iteration.
   var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
 
-  // Quick regexp-escaping function, because JS doesn't have a `RegExp.escape()`.
-  var escapeRegExp = function(s) { return s.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1'); };
-
   // Save bytes in the minified (but not gzipped) version:
   var ArrayProto = Array.prototype, ObjProto = Object.prototype;
 

From 644c5aa2ce6af135379bc896c07e1b3a33205eb2 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 20:32:57 -0400
Subject: [PATCH 206/533] Expose `wrapper.prototype` as `_.prototype`

---
 underscore.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/underscore.js b/underscore.js
index bb4ea3bfd..f28f46ff1 100644
--- a/underscore.js
+++ b/underscore.js
@@ -670,6 +670,9 @@
   // underscore functions. Wrapped objects may be chained.
   var wrapper = function(obj) { this._wrapped = obj; };
 
+  // Expose `wrapper.prototype` as `_.prototype`
+  _.prototype = wrapper.prototype;
+
   // Helper function to continue chaining intermediate results.
   var result = function(obj, chain) {
     return chain ? _(obj).chain() : obj;

From 2aec074acaeb2f83394b3167ce0156de336428ba Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 21:10:14 -0400
Subject: [PATCH 207/533] Define aliases inline.

---
 underscore.js | 42 ++++++++++++++++--------------------------
 1 file changed, 16 insertions(+), 26 deletions(-)

diff --git a/underscore.js b/underscore.js
index f28f46ff1..3580b2e94 100644
--- a/underscore.js
+++ b/underscore.js
@@ -59,10 +59,10 @@
   // Collection Functions
   // --------------------
 
-  // The cornerstone, an `each` implementation.
+  // The cornerstone, an `each` implementation, aka `forEach`.
   // Handles objects implementing `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
-  var each = _.forEach = function(obj, iterator, context) {
+  var each = _.each = _.forEach = function(obj, iterator, context) {
     try {
       if (nativeForEach && obj.forEach === nativeForEach) {
         obj.forEach(iterator, context);
@@ -92,7 +92,7 @@
 
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
-  _.reduce = function(obj, iterator, memo, context) {
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
       return obj.reduce(iterator, memo);
@@ -105,7 +105,7 @@
 
   // The right-associative version of reduce, also known as `foldr`. Uses
   // Delegates to **ECMAScript 5**'s native reduceRight if available.
-  _.reduceRight = function(obj, iterator, memo, context) {
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
       return obj.reduceRight(iterator, memo);
@@ -128,7 +128,8 @@
 
   // Return all the elements that pass a truth test.
   // Delegates to **ECMAScript 5**'s native `filter` if available.
-  _.filter = function(obj, iterator, context) {
+  // Aliased as `select`
+  _.filter = _.select = function(obj, iterator, context) {
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
     each(obj, function(value, index, list) {
@@ -148,7 +149,8 @@
 
   // Determine whether all of the elements match a truth test.
   // Delegates to **ECMAScript 5**'s native `every` if available.
-  _.every = function(obj, iterator, context) {
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
@@ -160,7 +162,8 @@
 
   // Determine if at least one element in the object matches a truth test.
   // Delegates to **ECMAScript 5**'s native `some` if available.
-  _.some = function(obj, iterator, context) {
+  // Aliased as `any`.
+  _.some = _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
@@ -260,7 +263,7 @@
   // Get the first element of an array. Passing **n** will return the first N
   // values in the array. Aliased as `head`. The **guard** check allows it to work
   // with `_.map`.
-  _.first = function(array, n, guard) {
+  _.first = _.head = function(array, n, guard) {
     return n && !guard ? slice.call(array, 0, n) : array[0];
   };
 
@@ -268,7 +271,7 @@
   // Especially useful on the arguments object. Passing an **index** will return
   // the rest of the values in the array from that index onward. The **guard**
   // check allows it to work with `_.map`.
-  _.rest = function(array, index, guard) {
+  _.rest = _.tail = function(array, index, guard) {
     return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
   };
 
@@ -307,8 +310,8 @@
   };
 
   // Produce an array that contains every item shared between all the
-  // passed-in arrays.
-  _.intersect = function(array) {
+  // passed-in arrays. Aliased as `contains`.
+  _.intersect = _.contains = function(array) {
     var rest = slice.call(arguments, 1);
     return _.filter(_.uniq(array), function(item) {
       return _.every(rest, function(other) {
@@ -447,7 +450,8 @@
   };
 
   // Return a sorted list of the function names available on the object.
-  _.functions = function(obj) {
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
     return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
   };
 
@@ -648,20 +652,6 @@
     return data ? func(data) : func;
   };
 
-  // Aliases:
-  // --------
-
-  _.each     = _.forEach;
-  _.foldl    = _.inject       = _.reduce;
-  _.foldr    = _.reduceRight;
-  _.select   = _.filter;
-  _.all      = _.every;
-  _.any      = _.some;
-  _.contains = _.include;
-  _.head     = _.first;
-  _.tail     = _.rest;
-  _.methods  = _.functions;
-
   // The OOP Wrapper
   // ---------------
 

From 2dc203332bf67ff2d5ac369c15d9a18805b7e6ed Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 21:22:37 -0400
Subject: [PATCH 208/533] Changed `reduceRight` to avoid unnecessarily cloning
 an array. `toArray` returns the first argument unmodified if it passes
 `isArray`. So if `obj` passes `isArray`, call `slice` on it directly,
 otherwise use `toArray`.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 3580b2e94..88042c84e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -110,7 +110,7 @@
       if (context) iterator = _.bind(iterator, context);
       return obj.reduceRight(iterator, memo);
     }
-    var reversed = _.clone(_.toArray(obj)).reverse();
+    var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
     return _.reduce(reversed, iterator, memo, context);
   };
 

From 2de76e065e7ba55066884ca06f84cb4ed2a077f7 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 22:33:16 -0400
Subject: [PATCH 209/533] Escaped lts, gts and amps in the test case
 descriptions.

---
 test/arrays.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index aba36e902..d3077f41b 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -97,11 +97,11 @@ $(document).ready(function() {
   test("arrays: range", function() {
     equals(_.range(0).join(''), '', 'range with 0 as a first argument generates an empty array');
     equals(_.range(4).join(' '), '0 1 2 3', 'range with a single positive argument generates an array of elements 0,1,2,...,n-1');
-    equals(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a & b, a<b generates an array of elements a,a+1,a+2,...,b-2,b-1');
-    equals(_.range(8, 5).join(''), '', 'range with two arguments a & b, b<a generates an empty array');
-    equals(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a & b & c, c < b-a, a < b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) < c');
-    equals(_.range(3, 10, 15).join(''), '3', 'range with three arguments a & b & c, c > b-a, a < b generates an array with a single element, equal to a');
-    equals(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a & b & c, a > b, c < 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
+    equals(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a &amp; b, a&lt;b generates an array of elements a,a+1,a+2,...,b-2,b-1');
+    equals(_.range(8, 5).join(''), '', 'range with two arguments a &amp; b, b&lt;a generates an empty array');
+    equals(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a &amp; b &amp; c, c &lt; b-a, a &lt; b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) &lt; c');
+    equals(_.range(3, 10, 15).join(''), '3', 'range with three arguments a &amp; b &amp; c, c &gt; b-a, a &lt; b generates an array with a single element, equal to a');
+    equals(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a &amp; b &amp; c, a &gt; b, c &lt; 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
     equals(_.range(0, -10, -1).join(' '), '0 -1 -2 -3 -4 -5 -6 -7 -8 -9', 'final example in the Python docs');
   });
 

From 81ce3ee0bdd3b83b79c97a48ec1895729624d4ce Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 22:34:24 -0400
Subject: [PATCH 210/533] Updated `templateSettings` regexes in tests,
 replacing the `.` with `[\s\S]`

---
 test/utility.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index 8013a6a87..066f8ba67 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -93,8 +93,8 @@ $(document).ready(function() {
     }
 
     _.templateSettings = {
-      evaluate    : /\{\{(.+?)\}\}/g,
-      interpolate : /\{\{=(.+?)\}\}/g
+      evaluate    : /\{\{([\s\S]+?)\}\}/g,
+      interpolate : /\{\{=([\s\S]+?)\}\}/g
     };
 
     var custom = _.template("<ul>{{ for (key in people) { }}<li>{{= people[key] }}</li>{{ } }}</ul>");
@@ -108,8 +108,8 @@ $(document).ready(function() {
     equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     _.templateSettings = {
-      evaluate    : /<\?(.+?)\?>/g,
-      interpolate : /<\?=(.+?)\?>/g
+      evaluate    : /<%([\s\S]+?)%>/g,
+      interpolate : /<%=([\s\S]+?)%>/g
     };
 
     var customWithSpecialChars = _.template("<ul><? for (key in people) { ?><li><?= people[key] ?></li><? } ?></ul>");

From 1c6e01173ac5e35307ac84b07223ad7d5f3dedb4 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 22:36:15 -0400
Subject: [PATCH 211/533] "Cleaned up"? `_.range` (or maybe not)

---
 underscore.js | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/underscore.js b/underscore.js
index 88042c84e..ab8d0d8b0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -353,16 +353,19 @@
   // the native Python `range()` function. See
   // [the Python documentation](http://docs.python.org/library/functions.html#range).
   _.range = function(start, stop, step) {
-    var a     = slice.call(arguments);
-    var solo  = a.length <= 1;
-    var start = solo ? 0 : a[0], stop = solo ? a[0] : a[1], step = a[2] || 1;
-    var len   = Math.ceil((stop - start) / step);
-    if (len <= 0) return [];
-    var range = new Array(len);
-    for (var i = start, idx = 0; true; i += step) {
-      if ((step > 0 ? i - stop : stop - i) >= 0) return range;
-      range[idx++] = i;
+    var args  = slice.call(arguments),
+        solo  = args.length <= 1,
+        start = solo ? 0 : args[0],
+        stop  = solo ? args[0] : args[1],
+        step  = args[2] || 1,
+        len   = Math.max(Math.ceil((stop - start) / step), 0),
+        idx   = 0,
+        range = new Array(len);
+    while (idx < len) {
+      range[idx++] = start;
+      start += step;
     }
+    return range;
   };
 
   // Function Functions

From 4d901fbc3cf6a084fae8ddbd7d326c6eba39e3f3 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 22:44:07 -0400
Subject: [PATCH 212/533] Adding minified version.

---
 underscore-min.js | 35 +++++++++++++++++------------------
 1 file changed, 17 insertions(+), 18 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 4dc24bfbf..01355501b 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,18 +1,17 @@
-(function(){var o=this,A=o._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",k=Array.prototype,m=Object.prototype,i=k.slice,B=k.unshift,C=m.toString,p=m.hasOwnProperty,s=k.forEach,t=k.map,u=k.reduce,v=k.reduceRight,w=k.filter,x=k.every,y=k.some,n=k.indexOf,z=k.lastIndexOf;m=Array.isArray;var D=Object.keys,b=function(a){return new l(a)};if(typeof exports!=="undefined")exports._=b;o._=b;b.VERSION="1.1.1";var j=b.forEach=function(a,c,d){try{if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
-0,f=a.length;e<f;e++)c.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&c.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};b.map=function(a,c,d){if(t&&a.map===t)return a.map(c,d);var e=[];j(a,function(f,g,h){e[e.length]=c.call(d,f,g,h)});return e};b.reduce=function(a,c,d,e){if(u&&a.reduce===u){if(e)c=b.bind(c,e);return a.reduce(c,d)}j(a,function(f,g,h){d=c.call(e,d,f,g,h)});return d};b.reduceRight=function(a,c,d,e){if(v&&a.reduceRight===v){if(e)c=b.bind(c,e);return a.reduceRight(c,d)}a=b.clone(b.toArray(a)).reverse();
-return b.reduce(a,c,d,e)};b.detect=function(a,c,d){var e;j(a,function(f,g,h){if(c.call(d,f,g,h)){e=f;b.breakLoop()}});return e};b.filter=function(a,c,d){if(w&&a.filter===w)return a.filter(c,d);var e=[];j(a,function(f,g,h){if(c.call(d,f,g,h))e[e.length]=f});return e};b.reject=function(a,c,d){var e=[];j(a,function(f,g,h){c.call(d,f,g,h)||(e[e.length]=f)});return e};b.every=function(a,c,d){c=c||b.identity;if(x&&a.every===x)return a.every(c,d);var e=true;j(a,function(f,g,h){(e=e&&c.call(d,f,g,h))||b.breakLoop()});
-return e};b.some=function(a,c,d){c=c||b.identity;if(y&&a.some===y)return a.some(c,d);var e=false;j(a,function(f,g,h){if(e=c.call(d,f,g,h))b.breakLoop()});return e};b.include=function(a,c){if(n&&a.indexOf===n)return a.indexOf(c)!=-1;var d=false;j(a,function(e){if(d=e===c)b.breakLoop()});return d};b.invoke=function(a,c){var d=i.call(arguments,2);return b.map(a,function(e){return(c?e[c]:e).apply(e,d)})};b.pluck=function(a,c){return b.map(a,function(d){return d[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,
-a);var e={computed:-Infinity};j(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};j(a,function(f,g,h){g=c?c.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(e,f,g){return{value:e,criteria:c.call(d,e,f,g)}}).sort(function(e,f){var g=e.criteria,h=f.criteria;return g<h?-1:g>h?
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From 18e85b813fa994435b01f55cdb56daccdcd96de7 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Tue, 5 Oct 2010 22:47:55 -0400
Subject: [PATCH 213/533] `slice(0)` is interchangable with `slice()` (in
 method `clone`)

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index ab8d0d8b0..72dbd1d16 100644
--- a/underscore.js
+++ b/underscore.js
@@ -468,7 +468,7 @@
 
   // Create a (shallow-cloned) duplicate of an object.
   _.clone = function(obj) {
-    return _.isArray(obj) ? obj.slice(0) : _.extend({}, obj);
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
   };
 
   // Invokes interceptor with the obj, and then returns obj.

From 0fb9a951820eb898cf3e15f73ffc3d71bb5659aa Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 6 Oct 2010 10:55:19 -0400
Subject: [PATCH 214/533] Merging in Ryan Tenney's 'improuvements'

---
 docs/underscore.html | 209 +++++++++++++++++++++----------------------
 1 file changed, 103 insertions(+), 106 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index 32f843c57..3ca0ca8e0 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -4,11 +4,11 @@ Portions of Underscore are inspired by or borrowed from Prototype.js,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
-</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets thrown to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">StopIteration</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">?</span> <span class="nx">StopIteration</span> <span class="o">:</span> <span class="s1">&#39;__break__&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Quick regexp-escaping function, because JS doesn't have a <code>RegExp.escape()</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">escapeRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">s</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">s</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/([.*+?^${}()|[\]\/\\])/g</span><span class="p">,</span> <span class="s1">&#39;\\$1&#39;</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>                 <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets thrown to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">StopIteration</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">?</span> <span class="nx">StopIteration</span> <span class="o">:</span> <span class="s1">&#39;__break__&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>                 <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
       <span class="nx">unshift</span>               <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
       <span class="nx">toString</span>              <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
       <span class="nx">hasOwnProperty</span>        <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">,</span>
-      <span class="nx">propertyIsEnumerable</span>  <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">propertyIsEnumerable</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
+      <span class="nx">propertyIsEnumerable</span>  <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">propertyIsEnumerable</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
 are declared here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span>
     <span class="nx">nativeForEach</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">forEach</span><span class="p">,</span>
     <span class="nx">nativeMap</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">map</span><span class="p">,</span>
@@ -20,9 +20,9 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
-    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation.
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">try</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -37,7 +37,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if avai
       <span class="k">if</span> <span class="p">(</span><span class="nx">e</span> <span class="o">!=</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">throw</span> <span class="nx">e</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
@@ -45,8 +45,8 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
-or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduce</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">===</span> <span class="nx">nativeReduce</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
@@ -55,15 +55,15 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
       <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>. Uses
-Delegates to <strong>ECMAScript 5</strong>'s native reduceRight if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>. Uses
+Delegates to <strong>ECMAScript 5</strong>'s native reduceRight if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
     <span class="p">}</span>
-    <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
+    <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return the first value which passes a truth test.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return the first value which passes a truth test.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
@@ -72,22 +72,24 @@ Delegates to <strong>ECMAScript 5</strong>'s native reduceRight if available.</p
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
+Aliased as <code>select</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
+Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
@@ -95,8 +97,9 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if availa
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
+Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
@@ -104,21 +107,21 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if availab
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">(</span><span class="nx">method</span> <span class="o">?</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]</span> <span class="o">:</span> <span class="nx">value</span><span class="p">).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -126,7 +129,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if availab
       <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -134,7 +137,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if availab
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -144,7 +147,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if availab
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -153,116 +156,119 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">iterable</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
-with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">n</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
-check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">values</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
-passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
+passed-in arrays. Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
 we need this function. Return the position of the first occurence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">a</span>     <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
-    <span class="kd">var</span> <span class="nx">solo</span>  <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">;</span>
-    <span class="kd">var</span> <span class="nx">start</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="nx">a</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="nx">stop</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="nx">a</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">:</span> <span class="nx">a</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="nx">step</span> <span class="o">=</span> <span class="nx">a</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">||</span> <span class="mi">1</span><span class="p">;</span>
-    <span class="kd">var</span> <span class="nx">len</span>   <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">ceil</span><span class="p">((</span><span class="nx">stop</span> <span class="o">-</span> <span class="nx">start</span><span class="p">)</span> <span class="o">/</span> <span class="nx">step</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">len</span> <span class="o">&lt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="p">[];</span>
-    <span class="kd">var</span> <span class="nx">range</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">len</span><span class="p">);</span>
-    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">start</span><span class="p">,</span> <span class="nx">idx</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="kc">true</span><span class="p">;</span> <span class="nx">i</span> <span class="o">+=</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">((</span><span class="nx">step</span> <span class="o">&gt;</span> <span class="mi">0</span> <span class="o">?</span> <span class="nx">i</span> <span class="o">-</span> <span class="nx">stop</span> <span class="o">:</span> <span class="nx">stop</span> <span class="o">-</span> <span class="nx">i</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-      <span class="nx">range</span><span class="p">[</span><span class="nx">idx</span><span class="o">++</span><span class="p">]</span> <span class="o">=</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">args</span>  <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">),</span>
+        <span class="nx">solo</span>  <span class="o">=</span> <span class="nx">args</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">,</span>
+        <span class="nx">start</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
+        <span class="nx">stop</span>  <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">:</span> <span class="nx">args</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span>
+        <span class="nx">step</span>  <span class="o">=</span> <span class="nx">args</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">||</span> <span class="mi">1</span><span class="p">,</span>
+        <span class="nx">len</span>   <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">ceil</span><span class="p">((</span><span class="nx">stop</span> <span class="o">-</span> <span class="nx">start</span><span class="p">)</span> <span class="o">/</span> <span class="nx">step</span><span class="p">),</span> <span class="mi">0</span><span class="p">),</span>
+        <span class="nx">idx</span>   <span class="o">=</span> <span class="mi">0</span><span class="p">,</span>
+        <span class="nx">range</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">len</span><span class="p">);</span>
+    <span class="k">while</span> <span class="p">(</span><span class="nx">idx</span> <span class="o">&lt;</span> <span class="nx">len</span><span class="p">)</span> <span class="p">{</span>
+      <span class="nx">range</span><span class="p">[</span><span class="nx">idx</span><span class="o">++</span><span class="p">]</span> <span class="o">=</span> <span class="nx">start</span><span class="p">;</span>
+      <span class="nx">start</span> <span class="o">+=</span> <span class="nx">step</span><span class="p">;</span>
     <span class="p">}</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <h2>Function Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+    <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <h2>Function Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span> <span class="o">||</span> <span class="p">{},</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">memo</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">wrapper</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -272,91 +278,91 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">concat</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">unshift</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
 isNaN(undefined) == true, so we make sure it's a number first.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nb">isNaN</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">typeof</span> <span class="nx">obj</span> <span class="o">==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Break out of the middle of an iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Break out of the middle of an iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">throw</span> <span class="nx">breaker</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -376,40 +382,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <h2>Aliases:</h2>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">each</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span>    <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span>       <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span>    <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">select</span>   <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">all</span>      <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">any</span>      <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">head</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">first</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span>     <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span><span class="p">;</span>
-  <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 

From 5b4b308c91afff1566df8c0e48757dccf991d133 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 7 Oct 2010 10:44:49 -0400
Subject: [PATCH 215/533] Fixing template settings

---
 docs/docco.css       |  8 ++++----
 docs/underscore.html | 10 +++++-----
 test/objects.js      |  2 +-
 test/utility.js      |  4 ++--
 underscore.js        | 12 ++++++------
 5 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/docs/docco.css b/docs/docco.css
index 76e818b38..03ba910d2 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -1,8 +1,8 @@
 /*--------------------- Layout and Typography ----------------------------*/
 body {
   font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
-  font-size: 16px;
-  line-height: 24px;
+  font-size: 15px;
+  line-height: 22px;
   color: #252519;
   margin: 0; padding: 0;
 }
@@ -72,8 +72,8 @@ table td {
   outline: 0;
 }
   td.docs, th.docs {
-    max-width: 500px;
-    min-width: 500px;
+    max-width: 450px;
+    min-width: 450px;
     min-height: 5px;
     padding: 10px 25px 1px 50px;
     vertical-align: top;
diff --git a/docs/underscore.html b/docs/underscore.html
index 3ca0ca8e0..2cca5f476 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -55,15 +55,15 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
       <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>. Uses
-Delegates to <strong>ECMAScript 5</strong>'s native reduceRight if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return the first value which passes a truth test.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
@@ -74,7 +74,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native reduceRight if available.</p
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
-Aliased as <code>select</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+Aliased as <code>select</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -207,7 +207,7 @@ an index go together.</p>             </td>             <td class="code">
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
diff --git a/test/objects.js b/test/objects.js
index fc9c93d42..4f7ee02e0 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -12,7 +12,7 @@ $(document).ready(function() {
 
   test("objects: functions", function() {
     var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
-    "compose", "contains", "defer", "delay", "detect", "each", "every", "extend", "filter", "first",
+    "compose", "contains", "defer", "delay", "detect", "each", "every", "extend", "filter", "find", "first",
     "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isBoolean", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
diff --git a/test/utility.js b/test/utility.js
index 066f8ba67..db87a4d08 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -108,8 +108,8 @@ $(document).ready(function() {
     equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     _.templateSettings = {
-      evaluate    : /<%([\s\S]+?)%>/g,
-      interpolate : /<%=([\s\S]+?)%>/g
+      evaluate    : /<\?([\s\S]+?)\?>/g,
+      interpolate : /<\?=([\s\S]+?)\?>/g
     };
 
     var customWithSpecialChars = _.template("<ul><? for (key in people) { ?><li><?= people[key] ?></li><? } ?></ul>");
diff --git a/underscore.js b/underscore.js
index 72dbd1d16..9dce73ef0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -103,8 +103,8 @@
     return memo;
   };
 
-  // The right-associative version of reduce, also known as `foldr`. Uses
-  // Delegates to **ECMAScript 5**'s native reduceRight if available.
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
@@ -114,8 +114,8 @@
     return _.reduce(reversed, iterator, memo, context);
   };
 
-  // Return the first value which passes a truth test.
-  _.detect = function(obj, iterator, context) {
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
     var result;
     each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) {
@@ -128,7 +128,7 @@
 
   // Return all the elements that pass a truth test.
   // Delegates to **ECMAScript 5**'s native `filter` if available.
-  // Aliased as `select`
+  // Aliased as `select`.
   _.filter = _.select = function(obj, iterator, context) {
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
@@ -330,7 +330,7 @@
     return results;
   };
 
-  // If the browser doesn't supply us with indexOf (I'm looking at you, MSIE),
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
   // we need this function. Return the position of the first occurence of an
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to **ECMAScript 5**'s native `indexOf` if available.

From b07c802766354976a1e112c9298d225c817ed2a4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 7 Oct 2010 10:49:10 -0400
Subject: [PATCH 216/533] tweaking documentation, license mention

---
 docs/docco.css       | 1 +
 docs/underscore.html | 6 +++---
 underscore.js        | 6 +++---
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/docs/docco.css b/docs/docco.css
index 03ba910d2..b2e601974 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -76,6 +76,7 @@ table td {
     min-width: 450px;
     min-height: 5px;
     padding: 10px 25px 1px 50px;
+    overflow-x: hidden;
     vertical-align: top;
     text-align: left;
   }
diff --git a/docs/underscore.html b/docs/underscore.html
index 2cca5f476..85174c8bf 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,6 +1,6 @@
 <!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
-Underscore is freely distributable under the terms of the MIT license.
-Portions of Underscore are inspired by or borrowed from Prototype.js,
+Underscore is freely distributable under the MIT license.
+Portions of Underscore are inspired or borrowed from Prototype,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
@@ -235,7 +235,7 @@ the native Python <code>range()</code> function. See
       <span class="nx">start</span> <span class="o">+=</span> <span class="nx">step</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <h2>Function Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
diff --git a/underscore.js b/underscore.js
index 9dce73ef0..2227dcf5e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,6 +1,6 @@
 //     (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
-//     Underscore is freely distributable under the terms of the MIT license.
-//     Portions of Underscore are inspired by or borrowed from Prototype.js,
+//     Underscore is freely distributable under the MIT license.
+//     Portions of Underscore are inspired or borrowed from Prototype,
 //     Oliver Steele's Functional, and John Resig's Micro-Templating.
 //     For all details and documentation:
 //     http://documentcloud.github.com/underscore
@@ -368,7 +368,7 @@
     return range;
   };
 
-  // Function Functions
+  // Function (ahem) Functions
   // ------------------
 
   // Create a function bound to a given object (assigning `this`, and arguments,

From c994dec4c0541df91ed8d6263b3a15d4dee02a46 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Sun, 10 Oct 2010 21:38:46 -0400
Subject: [PATCH 217/533] adding alias 'unique' to point to 'uniq'

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 2227dcf5e..8c727463f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -302,7 +302,7 @@
 
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
-  _.uniq = function(array, isSorted) {
+  _.uniq = _.unique = function(array, isSorted) {
     return _.reduce(array, function(memo, el, i) {
       if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
       return memo;

From 74d282ccc82fe9dfb340aaeef22c3d656f2e2ad4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Oct 2010 17:15:26 -0400
Subject: [PATCH 218/533] fixing mistakenly-aliased contains ... should refer
 to include.

---
 test/collections.js | 2 +-
 underscore.js       | 7 ++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 9c72e889e..4e7c7ab6b 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -111,7 +111,7 @@ $(document).ready(function() {
   test('collections: include', function() {
     ok(_.include([1,2,3], 2), 'two is in the array');
     ok(!_.include([1,3,9], 2), 'two is not in the array');
-    ok(_.contains({moe:1, larry:3, curly:9}, 3), '_.include on objects checks their values');
+    ok(_.contains({moe:1, larry:3, curly:9}, 3) === true, '_.include on objects checks their values');
     ok(_([1,2,3]).include(2), 'OO-style include');
   });
 
diff --git a/underscore.js b/underscore.js
index 2227dcf5e..6ca732b20 100644
--- a/underscore.js
+++ b/underscore.js
@@ -174,7 +174,8 @@
   };
 
   // Determine if a given value is included in the array or object using `===`.
-  _.include = function(obj, target) {
+  // Aliased as `contains`.
+  _.include = _.contains = function(obj, target) {
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     var found = false;
     each(obj, function(value) {
@@ -310,8 +311,8 @@
   };
 
   // Produce an array that contains every item shared between all the
-  // passed-in arrays. Aliased as `contains`.
-  _.intersect = _.contains = function(array) {
+  // passed-in arrays.
+  _.intersect = function(array) {
     var rest = slice.call(arguments, 1);
     return _.filter(_.uniq(array), function(item) {
       return _.every(rest, function(other) {

From 8fe19f20238658015a9a1e1def12c0e4af172e5f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Oct 2010 17:21:41 -0400
Subject: [PATCH 219/533] Underscore 1.1.2

---
 docs/underscore.html | 10 ++++++----
 index.html           | 12 ++++++++++--
 package.json         |  2 +-
 test/objects.js      |  2 +-
 underscore-min.js    | 34 +++++++++++++++++-----------------
 underscore.js        |  3 ++-
 6 files changed, 37 insertions(+), 26 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index 85174c8bf..ce0b9e38f 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -20,7 +20,7 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
-    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.2&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">try</span> <span class="p">{</span>
@@ -107,7 +107,8 @@ Aliased as <code>any</code>.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
+Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
@@ -187,13 +188,14 @@ check allows it to work with <code>_.map</code>.</p>             </td>
     <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">values</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
-been sorted, you have the option of using a faster algorithm.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
+been sorted, you have the option of using a faster algorithm.
+Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
-passed-in arrays. Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
diff --git a/index.html b/index.html
index 757ed0c6f..ab31da513 100644
--- a/index.html
+++ b/index.html
@@ -114,11 +114,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.1)</a></td>
+        <td><a href="underscore.js">Development Version (1.1.2)</a></td>
         <td><i>25kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.1)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.2)</a></td>
         <td><i>3kb, Packed and Gzipped</i></td>
       </tr>
     </table>
@@ -546,6 +546,7 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
 
       <p id="uniq">
         <b class="header">uniq</b><code>_.uniq(array, [isSorted])</code>
+        <span class="alias">Alias: <b>unique</b></span>
         <br />
         Produces a duplicate-free version of the <b>array</b>, using <i>===</i> to test
         object equality. If you know in advance that the <b>array</b> is sorted,
@@ -1165,6 +1166,13 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.1.2</b><br />
+        Fixed <tt>_.contains</tt>, which was mistakenly pointing at 
+        <tt>_.intersect</tt> instead of <tt>_.include</tt>, like it should 
+        have been. Added <tt>_.unique</tt> as an alias for <tt>_.uniq</tt>.
+      </p>
+      
       <p>
         <b class="header">1.1.1</b><br />
         Improved the speed of <tt>_.template</tt>, and its handling of multiline
diff --git a/package.json b/package.json
index 59f200734..c5277099c 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "lib"           : ".",
   "main"          : "underscore.js",
-  "version"       : "1.1.1"
+  "version"       : "1.1.2"
 }
diff --git a/test/objects.js b/test/objects.js
index 4f7ee02e0..fa0b56ee6 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -17,7 +17,7 @@ $(document).ready(function() {
     "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isBoolean", "isDate", "isElement", "isEmpty", "isEqual",
     "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
     "memoize", "methods", "min", "mixin", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
-    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq",
+    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq", "unique",
     "uniqueId", "values", "without", "wrap", "zip"];
     same(expected, _.methods(_), 'provides a sorted list of functions');
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
diff --git a/underscore-min.js b/underscore-min.js
index 01355501b..677e6559f 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,17 +1,17 @@
-(function(){var o=this,A=o._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",k=Array.prototype,m=Object.prototype,i=k.slice,B=k.unshift,C=m.toString,p=m.hasOwnProperty,s=k.forEach,t=k.map,u=k.reduce,v=k.reduceRight,w=k.filter,x=k.every,y=k.some,n=k.indexOf,z=k.lastIndexOf;m=Array.isArray;var D=Object.keys,c=function(a){return new l(a)};if(typeof exports!=="undefined")exports._=c;o._=c;c.VERSION="1.1.1";var j=c.each=c.forEach=function(a,b,d){try{if(s&&a.forEach===s)a.forEach(b,d);else if(c.isNumber(a.length))for(var e=
-0,f=a.length;e<f;e++)b.call(d,a[e],e,a);else for(e in a)p.call(a,e)&&b.call(d,a[e],e,a)}catch(g){if(g!=r)throw g;}return a};c.map=function(a,b,d){if(t&&a.map===t)return a.map(b,d);var e=[];j(a,function(f,g,h){e[e.length]=b.call(d,f,g,h)});return e};c.reduce=c.foldl=c.inject=function(a,b,d,e){if(u&&a.reduce===u){if(e)b=c.bind(b,e);return a.reduce(b,d)}j(a,function(f,g,h){d=b.call(e,d,f,g,h)});return d};c.reduceRight=c.foldr=function(a,b,d,e){if(v&&a.reduceRight===v){if(e)b=c.bind(b,e);return a.reduceRight(b,
-d)}a=(c.isArray(a)?a.slice():c.toArray(a)).reverse();return c.reduce(a,b,d,e)};c.detect=function(a,b,d){var e;j(a,function(f,g,h){if(b.call(d,f,g,h)){e=f;c.breakLoop()}});return e};c.filter=c.select=function(a,b,d){if(w&&a.filter===w)return a.filter(b,d);var e=[];j(a,function(f,g,h){if(b.call(d,f,g,h))e[e.length]=f});return e};c.reject=function(a,b,d){var e=[];j(a,function(f,g,h){b.call(d,f,g,h)||(e[e.length]=f)});return e};c.every=c.all=function(a,b,d){b=b||c.identity;if(x&&a.every===x)return a.every(b,
-d);var e=true;j(a,function(f,g,h){(e=e&&b.call(d,f,g,h))||c.breakLoop()});return e};c.some=c.any=function(a,b,d){b=b||c.identity;if(y&&a.some===y)return a.some(b,d);var e=false;j(a,function(f,g,h){if(e=b.call(d,f,g,h))c.breakLoop()});return e};c.include=function(a,b){if(n&&a.indexOf===n)return a.indexOf(b)!=-1;var d=false;j(a,function(e){if(d=e===b)c.breakLoop()});return d};c.invoke=function(a,b){var d=i.call(arguments,2);return c.map(a,function(e){return(b?e[b]:e).apply(e,d)})};c.pluck=function(a,
-b){return c.map(a,function(d){return d[b]})};c.max=function(a,b,d){if(!b&&c.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};j(a,function(f,g,h){g=b?b.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};c.min=function(a,b,d){if(!b&&c.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};j(a,function(f,g,h){g=b?b.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});return e.value};c.sortBy=function(a,b,d){return c.pluck(c.map(a,function(e,f,
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+b.memoize=function(a,c){var d={};c=c||b.identity;return function(){var e=c.apply(this,arguments);return e in d?d[e]:d[e]=a.apply(this,arguments)}};b.delay=function(a,c){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},c)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(i.call(arguments,1)))};b.wrap=function(a,c){return function(){var d=[a].concat(i.call(arguments));return c.apply(c,d)}};b.compose=function(){var a=i.call(arguments);return function(){for(var c=i.call(arguments),
+d=a.length-1;d>=0;d--)c=[a[d].apply(this,c)];return c[0]}};b.keys=D||function(a){if(b.isArray(a))return b.range(0,a.length);var c=[],d;for(d in a)if(p.call(a,d))c[c.length]=d;return c};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){j(i.call(arguments,1),function(c){for(var d in c)a[d]=c[d]});return a};b.clone=function(a){return b.isArray(a)?a.slice():b.extend({},a)};b.tap=
+function(a,c){c(a);return a};b.isEqual=function(a,c){if(a===c)return true;var d=typeof a;if(d!=typeof c)return false;if(a==c)return true;if(!a&&c||a&&!c)return false;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return false;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return false;if(a.length&&a.length!==c.length)return false;
+d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return false;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return false;return true};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(p.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=m||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};b.isArguments=function(a){return!!(a&&a.callee)};b.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};
+b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return a===+a||C.call(a)==="[object Number]"};b.isBoolean=function(a){return a===true||a===false};b.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};b.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};b.isNaN=function(a){return b.isNumber(a)&&isNaN(a)};b.isNull=function(a){return a===null};b.isUndefined=function(a){return typeof a=="undefined"};b.noConflict=
+function(){o._=A;return this};b.identity=function(a){return a};b.times=function(a,c,d){for(var e=0;e<a;e++)c.call(d,e)};b.breakLoop=function(){throw r;};b.mixin=function(a){j(b.functions(a),function(c){E(c,b[c]=a[c])})};var F=0;b.uniqueId=function(a){var c=F++;return a?a+c:c};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/'/g,
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+this._wrapped);return q(c.apply(b,d),this._chain)}};b.mixin(b);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var c=k[a];l.prototype[a]=function(){c.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var c=k[a];l.prototype[a]=function(){return q(c.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index f02da3896..6bf375ed8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -54,7 +54,7 @@
   root._ = _;
 
   // Current version.
-  _.VERSION = '1.1.1';
+  _.VERSION = '1.1.2';
 
   // Collection Functions
   // --------------------
@@ -303,6 +303,7 @@
 
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
   _.uniq = _.unique = function(array, isSorted) {
     return _.reduce(array, function(memo, el, i) {
       if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;

From 31efd854f8ec754d663d87c7bcb329e5bc90b8ad Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 18 Oct 2010 20:45:18 -0400
Subject: [PATCH 220/533] removing now unused propertyIsEnumerable reference.

---
 underscore.js | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index 6bf375ed8..6bd1ee3ca 100644
--- a/underscore.js
+++ b/underscore.js
@@ -23,11 +23,10 @@
   var ArrayProto = Array.prototype, ObjProto = Object.prototype;
 
   // Create quick reference variables for speed access to core prototypes.
-  var slice                 = ArrayProto.slice,
-      unshift               = ArrayProto.unshift,
-      toString              = ObjProto.toString,
-      hasOwnProperty        = ObjProto.hasOwnProperty,
-      propertyIsEnumerable  = ObjProto.propertyIsEnumerable;
+  var slice            = ArrayProto.slice,
+      unshift          = ArrayProto.unshift,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
 
   // All **ECMAScript 5** native function implementations that we hope to use
   // are declared here.

From 339ae67c019fe083c8ddea0e0a0b3b896f517eb1 Mon Sep 17 00:00:00 2001
From: Benjamin Kudria <ben@kudria.net>
Date: Fri, 29 Oct 2010 14:56:25 -0700
Subject: [PATCH 221/533] Fix (grammar) typo.

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index ab31da513..df64b9aef 100644
--- a/index.html
+++ b/index.html
@@ -1070,7 +1070,7 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
       <p>
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.
-        Define and an <b>interpolate</b> regex, and an (optional) <b>evaluate</b> regex
+        Define an <b>interpolate</b> regex, and an (optional) <b>evaluate</b> regex
         to match expressions that should be inserted and evaluated, respectively. 
         For example, to perform
         <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a>

From c21e7b24c66af270853d8ffefa9a424d99e21a75 Mon Sep 17 00:00:00 2001
From: Elliot Winkler <elliot.winkler@gmail.com>
Date: Sun, 31 Oct 2010 18:51:30 -0600
Subject: [PATCH 222/533] Fix reduce() so that if you don't pass in an initial
 value, the first item in the collection is used

---
 test/collections.js |  3 +++
 underscore.js       | 10 ++++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 4e7c7ab6b..87d5ccfba 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -65,6 +65,9 @@ $(document).ready(function() {
 
     sum = _([1, 2, 3]).reduce(function(sum, num){ return sum + num; }, 0);
     equals(sum, 6, 'OO-style reduce');
+    
+    var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
+    equals(sum, 6, 'default initial value');
   });
 
   test('collections: reduceRight', function() {
diff --git a/underscore.js b/underscore.js
index 6bd1ee3ca..5f57bc951 100644
--- a/underscore.js
+++ b/underscore.js
@@ -94,10 +94,16 @@
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
-      return obj.reduce(iterator, memo);
+      var args = [iterator];
+      if (memo !== undefined) args.push(memo);
+      return obj.reduce.apply(obj, args);
     }
     each(obj, function(value, index, list) {
-      memo = iterator.call(context, memo, value, index, list);
+      if (memo === undefined && index == 0) {
+        memo = value;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
     });
     return memo;
   };

From f729769d85390217c2be02697c195b2bb71e6967 Mon Sep 17 00:00:00 2001
From: Elliot Winkler <elliot.winkler@gmail.com>
Date: Sun, 31 Oct 2010 19:00:21 -0600
Subject: [PATCH 223/533] Fix reduceRight() so that if you don't pass in an
 initial value, the last item in the collection is used

---
 test/collections.js | 10 ++++++++--
 underscore.js       |  4 +++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 4e7c7ab6b..7896ef3ff 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -68,8 +68,14 @@ $(document).ready(function() {
   });
 
   test('collections: reduceRight', function() {
-    var list = _.foldr([1, 2, 3], function(memo, num){ return memo + num; }, '');
-    equals(list, '321', 'can perform right folds');
+    var list = _.reduceRight(["foo", "bar", "baz"], function(memo, str){ return memo + str; }, '');
+    equals(list, 'bazbarfoo', 'can perform right folds');
+    
+    var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; }, '');
+    equals(list, 'bazbarfoo', 'aliased as "foldr"');
+    
+    var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
+    equals(list, 'bazbarfoo', 'default initial value');
   });
 
   test('collections: detect', function() {
diff --git a/underscore.js b/underscore.js
index 6bd1ee3ca..476b85e2a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -107,7 +107,9 @@
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
-      return obj.reduceRight(iterator, memo);
+      var args = [iterator];
+      if (memo !== undefined) args.push(memo);
+      return obj.reduceRight.apply(obj, args);
     }
     var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
     return _.reduce(reversed, iterator, memo, context);

From 51e327f8e52511be1bb8ad434f58a7aed367f2b7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 1 Nov 2010 08:40:41 -0400
Subject: [PATCH 224/533] Tweaks to Issue #53

---
 underscore.js | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index 5f57bc951..2385da32c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -92,14 +92,13 @@
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = memo !== void 0;
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
-      var args = [iterator];
-      if (memo !== undefined) args.push(memo);
-      return obj.reduce.apply(obj, args);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
     }
     each(obj, function(value, index, list) {
-      if (memo === undefined && index == 0) {
+      if (!initial && index === 0) {
         memo = value;
       } else {
         memo = iterator.call(context, memo, value, index, list);

From da3edddef998ce7b5a6f19c21ab80e113d3d7f13 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 1 Nov 2010 08:44:31 -0400
Subject: [PATCH 225/533] Merging in Issue #54

---
 underscore.js | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/underscore.js b/underscore.js
index c15c40217..7f9329cce 100644
--- a/underscore.js
+++ b/underscore.js
@@ -112,9 +112,7 @@
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
-      var args = [iterator];
-      if (memo !== undefined) args.push(memo);
-      return obj.reduceRight.apply(obj, args);
+      return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
     }
     var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
     return _.reduce(reversed, iterator, memo, context);

From 13993f466ad2c17db8b3675e37ca8463397f9fc9 Mon Sep 17 00:00:00 2001
From: summatix <none@none>
Date: Sun, 7 Nov 2010 10:28:14 +1000
Subject: [PATCH 226/533] Added index file for Node.JS

---
 index.js | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 index.js

diff --git a/index.js b/index.js
new file mode 100644
index 000000000..2cf0ca5b0
--- /dev/null
+++ b/index.js
@@ -0,0 +1 @@
+module.exports = require('./underscore');

From 44d09ae1c6287a2bd117551754fbd38ce6ca5500 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 7 Nov 2010 19:00:25 -0500
Subject: [PATCH 227/533] Adding header + version number to -min.js

---
 Rakefile          | 11 ++++++++---
 underscore-min.js | 41 ++++++++++++++++++++++++-----------------
 underscore.js     |  1 +
 3 files changed, 33 insertions(+), 20 deletions(-)

diff --git a/Rakefile b/Rakefile
index 89e363d6b..951663b7b 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,11 +1,16 @@
 require 'rubygems'
 require 'closure-compiler'
 
+HEADER = /((^\s*\/\/.*\n)+)/
+
 desc "Use the Closure Compiler to compress Underscore.js"
 task :build do
-  js  = File.open('underscore.js', 'r')
-  min = Closure::Compiler.new.compile(js)
-  File.open('underscore-min.js', 'w') {|f| f.write(min) }
+  source  = File.read('underscore.js')
+  header  = source.match(HEADER)
+  min     = Closure::Compiler.new.compress(source)
+  File.open('underscore-min.js', 'w') do |file|
+    file.write header[1].squeeze(' ') + min
+  end
 end
 
 desc "Build the docco documentation"
diff --git a/underscore-min.js b/underscore-min.js
index 677e6559f..fb9bc0201 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,17 +1,24 @@
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+// Underscore.js 1.1.2
+// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+(function(){var o=this,A=o._,r=typeof StopIteration!=="undefined"?StopIteration:"__break__",k=Array.prototype,m=Object.prototype,i=k.slice,B=k.unshift,C=m.toString,p=m.hasOwnProperty,s=k.forEach,t=k.map,u=k.reduce,v=k.reduceRight,w=k.filter,x=k.every,y=k.some,n=k.indexOf,z=k.lastIndexOf;m=Array.isArray;var D=Object.keys,c=function(a){return new l(a)};if(typeof exports!=="undefined")exports._=c;o._=c;c.VERSION="1.1.2";var j=c.each=c.forEach=function(a,b,d){try{if(s&&a.forEach===s)a.forEach(b,d);else if(c.isNumber(a.length))for(var e=
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+c.every=c.all=function(a,b,d){b=b||c.identity;if(x&&a.every===x)return a.every(b,d);var e=true;j(a,function(f,g,h){(e=e&&b.call(d,f,g,h))||c.breakLoop()});return e};c.some=c.any=function(a,b,d){b=b||c.identity;if(y&&a.some===y)return a.some(b,d);var e=false;j(a,function(f,g,h){if(e=b.call(d,f,g,h))c.breakLoop()});return e};c.include=c.contains=function(a,b){if(n&&a.indexOf===n)return a.indexOf(b)!=-1;var d=false;j(a,function(e){if(d=e===b)c.breakLoop()});return d};c.invoke=function(a,b){var d=i.call(arguments,
+2);return c.map(a,function(e){return(b?e[b]:e).apply(e,d)})};c.pluck=function(a,b){return c.map(a,function(d){return d[b]})};c.max=function(a,b,d){if(!b&&c.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};j(a,function(f,g,h){g=b?b.call(d,f,g,h):f;g>=e.computed&&(e={value:f,computed:g})});return e.value};c.min=function(a,b,d){if(!b&&c.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};j(a,function(f,g,h){g=b?b.call(d,f,g,h):f;g<e.computed&&(e={value:f,computed:g})});
+return e.value};c.sortBy=function(a,b,d){return c.pluck(c.map(a,function(e,f,g){return{value:e,criteria:b.call(d,e,f,g)}}).sort(function(e,f){var g=e.criteria,h=f.criteria;return g<h?-1:g>h?1:0}),"value")};c.sortedIndex=function(a,b,d){d=d||c.identity;for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(b)?e=g+1:f=g}return e};c.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(c.isArray(a))return a;if(c.isArguments(a))return i.call(a);return c.values(a)};c.size=function(a){return c.toArray(a).length};
+c.first=c.head=function(a,b,d){return b&&!d?i.call(a,0,b):a[0]};c.rest=c.tail=function(a,b,d){return i.call(a,c.isUndefined(b)||d?1:b)};c.last=function(a){return a[a.length-1]};c.compact=function(a){return c.filter(a,function(b){return!!b})};c.flatten=function(a){return c.reduce(a,function(b,d){if(c.isArray(d))return b.concat(c.flatten(d));b[b.length]=d;return b},[])};c.without=function(a){var b=i.call(arguments,1);return c.filter(a,function(d){return!c.include(b,d)})};c.uniq=c.unique=function(a,
+b){return c.reduce(a,function(d,e,f){if(0==f||(b===true?c.last(d)!=e:!c.include(d,e)))d[d.length]=e;return d},[])};c.intersect=function(a){var b=i.call(arguments,1);return c.filter(c.uniq(a),function(d){return c.every(b,function(e){return c.indexOf(e,d)>=0})})};c.zip=function(){for(var a=i.call(arguments),b=c.max(c.pluck(a,"length")),d=Array(b),e=0;e<b;e++)d[e]=c.pluck(a,""+e);return d};c.indexOf=function(a,b){if(n&&a.indexOf===n)return a.indexOf(b);for(var d=0,e=a.length;d<e;d++)if(a[d]===b)return d;
+return-1};c.lastIndexOf=function(a,b){if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};c.range=function(a,b,d){var e=i.call(arguments),f=e.length<=1;a=f?0:e[0];b=f?e[0]:e[1];d=e[2]||1;e=Math.max(Math.ceil((b-a)/d),0);f=0;for(var g=Array(e);f<e;){g[f++]=a;a+=d}return g};c.bind=function(a,b){var d=i.call(arguments,2);return function(){return a.apply(b||{},d.concat(i.call(arguments)))}};c.bindAll=function(a){var b=i.call(arguments,1);if(b.length==
+0)b=c.functions(a);j(b,function(d){a[d]=c.bind(a[d],a)});return a};c.memoize=function(a,b){var d={};b=b||c.identity;return function(){var e=b.apply(this,arguments);return e in d?d[e]:d[e]=a.apply(this,arguments)}};c.delay=function(a,b){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};c.defer=function(a){return c.delay.apply(c,[a,1].concat(i.call(arguments,1)))};c.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments));return b.apply(b,d)}};c.compose=
+function(){var a=i.call(arguments);return function(){for(var b=i.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};c.keys=D||function(a){if(c.isArray(a))return c.range(0,a.length);var b=[],d;for(d in a)if(p.call(a,d))b[b.length]=d;return b};c.values=function(a){return c.map(a,c.identity)};c.functions=c.methods=function(a){return c.filter(c.keys(a),function(b){return c.isFunction(a[b])}).sort()};c.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)a[d]=b[d]});
+return a};c.clone=function(a){return c.isArray(a)?a.slice():c.extend({},a)};c.tap=function(a,b){b(a);return a};c.isEqual=function(a,b){if(a===b)return true;var d=typeof a;if(d!=typeof b)return false;if(a==b)return true;if(!a&&b||a&&!b)return false;if(a.isEqual)return a.isEqual(b);if(c.isDate(a)&&c.isDate(b))return a.getTime()===b.getTime();if(c.isNaN(a)&&c.isNaN(b))return false;if(c.isRegExp(a)&&c.isRegExp(b))return a.source===b.source&&a.global===b.global&&a.ignoreCase===b.ignoreCase&&a.multiline===
+b.multiline;if(d!=="object")return false;if(a.length&&a.length!==b.length)return false;d=c.keys(a);var e=c.keys(b);if(d.length!=e.length)return false;for(var f in a)if(!(f in b)||!c.isEqual(a[f],b[f]))return false;return true};c.isEmpty=function(a){if(c.isArray(a)||c.isString(a))return a.length===0;for(var b in a)if(p.call(a,b))return false;return true};c.isElement=function(a){return!!(a&&a.nodeType==1)};c.isArray=m||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};c.isArguments=function(a){return!!(a&&
+a.callee)};c.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};c.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};c.isNumber=function(a){return a===+a||C.call(a)==="[object Number]"};c.isBoolean=function(a){return a===true||a===false};c.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};c.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};c.isNaN=function(a){return c.isNumber(a)&&isNaN(a)};c.isNull=function(a){return a===
+null};c.isUndefined=function(a){return typeof a=="undefined"};c.noConflict=function(){o._=A;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.breakLoop=function(){throw r;};c.mixin=function(a){j(c.functions(a),function(b){F(b,c[b]=a[b])})};var G=0;c.uniqueId=function(a){var b=G++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+
+a.replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var q=function(a,b){return b?c(a).chain():a},F=function(a,b){l.prototype[a]=function(){var d=i.call(arguments);
+B.call(d,this._wrapped);return q(b.apply(c,d),this._chain)}};c.mixin(c);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=k[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];l.prototype[a]=function(){return q(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 7f9329cce..6f23ffbd8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,3 +1,4 @@
+//     Underscore.js 1.1.2
 //     (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,

From 47eb154ccff6562d463fee8168228050a4bf1eaa Mon Sep 17 00:00:00 2001
From: Jason Davies <jason@jasondavies.com>
Date: Tue, 9 Nov 2010 22:59:03 +0000
Subject: [PATCH 228/533] Preserve backslashes in _.template()

For example, templates containing things like the literal string
`\ribbit` weren't being escaped properly when being compiled. The `\r`
was being interpreted as a carriage return character.

I've added a test for this too, and all the existing tests pass.
---
 test/utility.js | 3 +++
 underscore.js   | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index db87a4d08..0265c0328 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -55,6 +55,9 @@ $(document).ready(function() {
     var result = basicTemplate({thing : 'This'});
     equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
 
+    var backslashTemplate = _.template("<%= thing %> is \\ridanculous");
+    equals(backslashTemplate({thing: 'This'}), "This is \\ridanculous");
+
     var fancyTemplate = _.template("<ul><% \
       for (key in people) { \
     %><li><%= people[key] %></li><% } %></ul>");
diff --git a/underscore.js b/underscore.js
index 6f23ffbd8..7b17fc649 100644
--- a/underscore.js
+++ b/underscore.js
@@ -646,7 +646,8 @@
     var c  = _.templateSettings;
     var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
       'with(obj||{}){__p.push(\'' +
-      str.replace(/'/g, "\\'")
+      str.replace(/\\/g, '\\\\')
+         .replace(/'/g, "\\'")
          .replace(c.interpolate, function(match, code) {
            return "'," + code.replace(/\\'/g, "'") + ",'";
          })

From e0a3d696be44637248a445ffde6963f42e1c59eb Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 11 Nov 2010 12:30:21 -0500
Subject: [PATCH 229/533] Adding help info to the homepage.

---
 index.html        | 4 ++++
 underscore-min.js | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index df64b9aef..1aa926969 100644
--- a/index.html
+++ b/index.html
@@ -104,6 +104,10 @@
     <p>
       The project is
       <a href="http://github.com/documentcloud/underscore/">hosted on GitHub</a>.
+      You can report bugs and discuss features on the
+      <a href="http://github.com/documentcloud/jammit/issues">issues page</a>,
+      on Freenode in the <tt>#documentcloud</tt> channel,
+      or send tweets to <a href="http://twitter.com/documentcloud">@documentcloud</a>.
     </p>
 
     <p>
diff --git a/underscore-min.js b/underscore-min.js
index fb9bc0201..b800015b8 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -20,5 +20,5 @@ return a};c.clone=function(a){return c.isArray(a)?a.slice():c.extend({},a)};c.ta
 b.multiline;if(d!=="object")return false;if(a.length&&a.length!==b.length)return false;d=c.keys(a);var e=c.keys(b);if(d.length!=e.length)return false;for(var f in a)if(!(f in b)||!c.isEqual(a[f],b[f]))return false;return true};c.isEmpty=function(a){if(c.isArray(a)||c.isString(a))return a.length===0;for(var b in a)if(p.call(a,b))return false;return true};c.isElement=function(a){return!!(a&&a.nodeType==1)};c.isArray=m||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};c.isArguments=function(a){return!!(a&&
 a.callee)};c.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};c.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};c.isNumber=function(a){return a===+a||C.call(a)==="[object Number]"};c.isBoolean=function(a){return a===true||a===false};c.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};c.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};c.isNaN=function(a){return c.isNumber(a)&&isNaN(a)};c.isNull=function(a){return a===
 null};c.isUndefined=function(a){return typeof a=="undefined"};c.noConflict=function(){o._=A;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.breakLoop=function(){throw r;};c.mixin=function(a){j(c.functions(a),function(b){F(b,c[b]=a[b])})};var G=0;c.uniqueId=function(a){var b=G++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+
-a.replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var q=function(a,b){return b?c(a).chain():a},F=function(a,b){l.prototype[a]=function(){var d=i.call(arguments);
-B.call(d,this._wrapped);return q(b.apply(c,d),this._chain)}};c.mixin(c);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=k[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];l.prototype[a]=function(){return q(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var q=function(a,b){return b?c(a).chain():a},F=function(a,b){l.prototype[a]=function(){var d=
+i.call(arguments);B.call(d,this._wrapped);return q(b.apply(c,d),this._chain)}};c.mixin(c);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=k[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];l.prototype[a]=function(){return q(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();

From 6763b0619277943d406d4f7a9a99f80248f2460e Mon Sep 17 00:00:00 2001
From: Jason Davies <jason@jasondavies.com>
Date: Thu, 11 Nov 2010 23:25:31 +0000
Subject: [PATCH 230/533] Fix spelling: occurence -> occurrence

---
 docs/underscore.html | 2 +-
 underscore.js        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index ce0b9e38f..76af64f34 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -210,7 +210,7 @@ an index go together.</p>             </td>             <td class="code">
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
-we need this function. Return the position of the first occurence of an
+we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
diff --git a/underscore.js b/underscore.js
index 7b17fc649..8689aeb42 100644
--- a/underscore.js
+++ b/underscore.js
@@ -338,7 +338,7 @@
   };
 
   // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
-  // we need this function. Return the position of the first occurence of an
+  // we need this function. Return the position of the first occurrence of an
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to **ECMAScript 5**'s native `indexOf` if available.
   _.indexOf = function(array, item) {

From 538fea377edaf09deaf5fab8a31b1dfc7c96c634 Mon Sep 17 00:00:00 2001
From: Joshua Peek <josh@joshpeek.com>
Date: Tue, 30 Nov 2010 10:09:50 -0600
Subject: [PATCH 231/533] Export _ object as the entire module

---
 underscore.js | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index 8689aeb42..0f9480d55 100644
--- a/underscore.js
+++ b/underscore.js
@@ -47,11 +47,16 @@
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
-  // Export the Underscore object for **CommonJS**.
-  if (typeof exports !== 'undefined') exports._ = _;
+  if (typeof module !== 'undefined') {
+    // Export the Underscore object for **CommonJS**.
+    module.exports = _;
 
-  // Export Underscore to the global scope.
-  root._ = _;
+    // Backwards compat with old requiring api
+    _._ = _;
+  } else {
+    // Export Underscore to the global scope.
+    root._ = _;
+  }
 
   // Current version.
   _.VERSION = '1.1.2';

From 9e3e067f5025dbe5e93ed784f93b233882ca0ffe Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 30 Nov 2010 11:41:48 -0500
Subject: [PATCH 232/533] Initial draft of _.throttle and _.debounce

---
 test/functions.js | 29 +++++++++++++++++++++++++++--
 test/objects.js   |  9 ---------
 underscore.js     | 27 +++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 11 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index eba6309d7..96292b563 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -54,19 +54,44 @@ $(document).ready(function() {
     equals(fastFib(10), 55, 'a memoized version of fibonacci produces identical results');
   });
 
-  asyncTest("functions: delay", function() {
+  asyncTest("functions: delay", 2, function() {
     var delayed = false;
     _.delay(function(){ delayed = true; }, 100);
     _.delay(function(){ ok(!delayed, "didn't delay the function quite yet"); }, 50);
     _.delay(function(){ ok(delayed, 'delayed the function'); start(); }, 150);
   });
 
-  asyncTest("functions: defer", function() {
+  asyncTest("functions: defer", 1, function() {
     var deferred = false;
     _.defer(function(bool){ deferred = bool; }, true);
     _.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
   });
 
+  asyncTest("functions: throttle", 1, function() {
+    var counter = 0;
+    var incr = function(){ counter++; };
+    var throttledIncr = _.throttle(incr, 50);
+    throttledIncr(); throttledIncr(); throttledIncr();
+    setTimeout(throttledIncr, 60);
+    setTimeout(throttledIncr, 70);
+    setTimeout(throttledIncr, 110);
+    setTimeout(throttledIncr, 120);
+    _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 180);
+  });
+
+  asyncTest("functions: debounce", 1, function() {
+    var counter = 0;
+    var incr = function(){ counter++; };
+    var debouncedIncr = _.debounce(incr, 50);
+    debouncedIncr(); debouncedIncr(); debouncedIncr();
+    setTimeout(debouncedIncr, 30);
+    setTimeout(debouncedIncr, 60);
+    setTimeout(debouncedIncr, 90);
+    setTimeout(debouncedIncr, 120);
+    setTimeout(debouncedIncr, 150);
+    _.delay(function(){ ok(counter == 1, "incr was debounced"); start(); }, 220);
+  });
+
   test("functions: wrap", function() {
     var greet = function(name){ return "hi: " + name; };
     var backwards = _.wrap(greet, function(func, name){ return func(name) + ' ' + name.split('').reverse().join(''); });
diff --git a/test/objects.js b/test/objects.js
index fa0b56ee6..04577994a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -11,15 +11,6 @@ $(document).ready(function() {
   });
 
   test("objects: functions", function() {
-    var expected = ["all", "any", "bind", "bindAll", "breakLoop", "clone", "compact",
-    "compose", "contains", "defer", "delay", "detect", "each", "every", "extend", "filter", "find", "first",
-    "flatten", "foldl", "foldr", "forEach", "functions", "head", "identity", "include",
-    "indexOf", "inject", "intersect", "invoke", "isArguments", "isArray", "isBoolean", "isDate", "isElement", "isEmpty", "isEqual",
-    "isFunction", "isNaN", "isNull", "isNumber", "isRegExp", "isString", "isUndefined", "keys", "last", "lastIndexOf", "map", "max",
-    "memoize", "methods", "min", "mixin", "noConflict", "pluck", "range", "reduce", "reduceRight", "reject", "rest", "select",
-    "size", "some", "sortBy", "sortedIndex", "tail", "tap", "template", "times", "toArray", "uniq", "unique",
-    "uniqueId", "values", "without", "wrap", "zip"];
-    same(expected, _.methods(_), 'provides a sorted list of functions');
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
     ok(_.isEqual(['b', 'd'], _.functions(obj)), 'can grab the function names of any passed-in object');
   });
diff --git a/underscore.js b/underscore.js
index 8689aeb42..db904e6cb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -419,6 +419,33 @@
     return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
   };
 
+  // Internal function used to implement `_.throttle` and `_.debounce`.
+  var limit = function(func, wait, debounce) {
+    var timeout;
+    return function() {
+      var context = this, args = arguments;
+      var throttler = function() {
+        timeout = null;
+        func.apply(context, args);
+      };
+      if (debounce) clearTimeout(timeout);
+      if (debounce || !timeout) timeout = setTimeout(throttler, wait);
+    };
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    return limit(func, wait, false);
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds.
+  _.debounce = function(func, wait) {
+    return limit(func, wait, true);
+  };
+
   // Returns the first function passed as an argument to the second,
   // allowing you to adjust arguments, run code before and after, and
   // conditionally execute the original function.

From 71439c35ac46960915d6231757e5d3ae4ac6b661 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 30 Nov 2010 11:59:45 -0500
Subject: [PATCH 233/533] Merging in a patch for _ = require('underscore')

---
 underscore.js | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index f59dc5350..cfd9a0763 100644
--- a/underscore.js
+++ b/underscore.js
@@ -47,14 +47,13 @@
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
+  // Export the Underscore object for **CommonJS**, with backwards-compatibility
+  // for the old `require()` API. If we're not in CommonJS, add `_` to the
+  // global object.
   if (typeof module !== 'undefined') {
-    // Export the Underscore object for **CommonJS**.
     module.exports = _;
-
-    // Backwards compat with old requiring api
     _._ = _;
   } else {
-    // Export Underscore to the global scope.
     root._ = _;
   }
 

From 2badecf038be9513e5bca532f8e3b85a9afcee05 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 30 Nov 2010 12:02:42 -0500
Subject: [PATCH 234/533] Tweaking README ... linking to contributors.

---
 README | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/README b/README
index 693e316f5..408145aab 100644
--- a/README
+++ b/README
@@ -9,26 +9,11 @@
                                                                                \/___/
 
 Underscore is a utility-belt library for JavaScript that provides 
-a lot of the functional programming support that you would expect 
-in Prototype.js (or Ruby), but without extending any of the built-
-in JavaScript objects. It's the tie to go along with jQuery's tux.
+support for the usual functional suspects (each, map, reduce, filter...) 
+without extending any core JavaScript objects.
 
 For Docs, License, Tests, and pre-packed downloads, see:
 http://documentcloud.github.com/underscore/
 
 Many thanks to our contributors:
-
-  Dmitry Baranovskiy
-  Tim Caswell
-  Samuel Clay
-  Mathieu D'Amours
-  Rick Fletcher
-  Mike Frawley
-  Kirill Ishanov
-  Kris Kowal
-  Jed Schmidt
-  Noah Sloan
-  Nick Stenning
-  Luke Sutton
-  Ryan Tenney
-  John Wright
+https://github.com/documentcloud/underscore/contributors

From c86a2fe3a86c2b84467d7454d1330c33c5e13ad9 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 1 Dec 2010 09:44:11 -0500
Subject: [PATCH 235/533] Safer CommonJS detection... module.exports must be
 defined.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index cfd9a0763..33925ded8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -50,7 +50,7 @@
   // Export the Underscore object for **CommonJS**, with backwards-compatibility
   // for the old `require()` API. If we're not in CommonJS, add `_` to the
   // global object.
-  if (typeof module !== 'undefined') {
+  if (typeof module !== 'undefined' && module.exports) {
     module.exports = _;
     _._ = _;
   } else {

From 00237103fc344588e5bdb6e67ce8a1e547535213 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 1 Dec 2010 09:49:45 -0500
Subject: [PATCH 236/533] removing an errant a.

---
 test/test.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/test.html b/test/test.html
index 1ac56f9be..dbc30a7e8 100644
--- a/test/test.html
+++ b/test/test.html
@@ -35,7 +35,7 @@
       <%
       if (data) { data += 12345; }; %>
       <li><%= data %></li>
-  </script>a
+  </script>
 
 </body>
 </html>

From 6b8bb0cacd315ffa9bb2008cc61fa3137e77eb6b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 1 Dec 2010 10:25:55 -0500
Subject: [PATCH 237/533] Better Underscore isType checking, in the presence of
 Internet Explorer host objects, which are a bit touchy.

---
 test/functions.js |  2 +-
 test/objects.js   | 17 +++++++++++++++--
 underscore.js     | 16 ++++++++--------
 3 files changed, 24 insertions(+), 11 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 96292b563..b976977e7 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -76,7 +76,7 @@ $(document).ready(function() {
     setTimeout(throttledIncr, 70);
     setTimeout(throttledIncr, 110);
     setTimeout(throttledIncr, 120);
-    _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 180);
+    _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 200);
   });
 
   asyncTest("functions: debounce", 1, function() {
diff --git a/test/objects.js b/test/objects.js
index 04577994a..b47de7fc4 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -86,7 +86,7 @@ $(document).ready(function() {
       parent.iRegExp    = /hi/;\
       parent.iNaN       = NaN;\
       parent.iNull      = null;\
-	  parent.iBoolean   = false;\
+      parent.iBoolean   = false;\
       parent.iUndefined = undefined;\
     </script>"
   );
@@ -125,7 +125,7 @@ $(document).ready(function() {
     ok(!_.isNumber(arguments), 'the arguments object is not a number');
     ok(!_.isNumber(undefined), 'undefined is not a number');
     ok(_.isNumber(3 * 4 - 7 / 10), 'but numbers are');
-    ok(_.isNumber(NaN), 'NaN is a number');
+    ok(!_.isNumber(NaN), 'NaN is not a number');
     ok(_.isNumber(Infinity), 'Infinity is a number');
     ok(_.isNumber(iNumber), 'even from another frame');
   });
@@ -183,11 +183,24 @@ $(document).ready(function() {
     ok(!_.isUndefined(1), 'numbers are defined');
     ok(!_.isUndefined(null), 'null is defined');
     ok(!_.isUndefined(false), 'false is defined');
+    ok(!_.isUndefined(NaN), 'NaN is defined');
     ok(_.isUndefined(), 'nothing is undefined');
     ok(_.isUndefined(undefined), 'undefined is undefined');
     ok(_.isUndefined(iUndefined), 'even from another frame');
   });
 
+  if (window.ActiveXObject) {
+    test("objects: IE host objects", function() {
+      var xml = new ActiveXObject("Msxml2.DOMDocument.3.0");
+      ok(!_.isNumber(xml));
+      ok(!_.isBoolean(xml));
+      ok(!_.isNaN(xml));
+      ok(!_.isFunction(xml));
+      ok(!_.isNull(xml));
+      ok(!_.isUndefined(xml));
+    });
+  }
+
   test("objects: tap", function() {
     var intercepted = null;
     var interceptor = function(obj) { intercepted = obj; };
diff --git a/underscore.js b/underscore.js
index 33925ded8..291b97617 100644
--- a/underscore.js
+++ b/underscore.js
@@ -588,7 +588,13 @@
 
   // Is a given value a number?
   _.isNumber = function(obj) {
-    return (obj === +obj) || (toString.call(obj) === '[object Number]');
+    return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
+  };
+
+  // Is the given value NaN -- this one is interesting. NaN != NaN, and
+  // isNaN(undefined) == true, so we make sure it's a number first.
+  _.isNaN = function(obj) {
+    return toString.call(obj) === '[object Number]' && isNaN(obj);
   };
 
   // Is a given value a boolean?
@@ -606,12 +612,6 @@
     return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
   };
 
-  // Is the given value NaN -- this one is interesting. NaN != NaN, and
-  // isNaN(undefined) == true, so we make sure it's a number first.
-  _.isNaN = function(obj) {
-    return _.isNumber(obj) && isNaN(obj);
-  };
-
   // Is a given value equal to null?
   _.isNull = function(obj) {
     return obj === null;
@@ -619,7 +619,7 @@
 
   // Is a given variable undefined?
   _.isUndefined = function(obj) {
-    return typeof obj == 'undefined';
+    return obj === void 0;
   };
 
   // Utility Functions

From 2d06e1d5262ca2e17aa71955c7780d15acc18d5d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 1 Dec 2010 11:08:34 -0500
Subject: [PATCH 238/533] Issue #70 -- implementing each, find, all, any, etc.
 without the use of a try/catch/throw. Minor speedup + avoids destroying the
 stack trace.

---
 test/collections.js | 10 +++-------
 test/utility.js     |  9 ---------
 underscore.js       | 45 ++++++++++++++++++++-------------------------
 3 files changed, 23 insertions(+), 41 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index b187af236..7cdf16587 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -7,10 +7,6 @@ $(document).ready(function() {
       equals(num, i + 1, 'each iterators provide value and iteration count');
     });
 
-    var answer = null;
-    _.each([1, 2, 3], function(num){ if ((answer = num) == 2) _.breakLoop(); });
-    equals(answer, 2, 'the loop broke in the middle');
-
     var answers = [];
     _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
@@ -65,7 +61,7 @@ $(document).ready(function() {
 
     sum = _([1, 2, 3]).reduce(function(sum, num){ return sum + num; }, 0);
     equals(sum, 6, 'OO-style reduce');
-    
+
     var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
     equals(sum, 6, 'default initial value');
   });
@@ -73,10 +69,10 @@ $(document).ready(function() {
   test('collections: reduceRight', function() {
     var list = _.reduceRight(["foo", "bar", "baz"], function(memo, str){ return memo + str; }, '');
     equals(list, 'bazbarfoo', 'can perform right folds');
-    
+
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; }, '');
     equals(list, 'bazbarfoo', 'aliased as "foldr"');
-    
+
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
     equals(list, 'bazbarfoo', 'default initial value');
   });
diff --git a/test/utility.js b/test/utility.js
index 0265c0328..94252a654 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -15,15 +15,6 @@ $(document).ready(function() {
     equals(_.identity(moe), moe, 'moe is the same as his identity');
   });
 
-  test('utility: breakLoop', function() {
-    var result = null;
-    _([1,2,3,4,5,6]).each(function(num) {
-      result = num;
-      if (num == 3) _.breakLoop();
-    });
-    equals(result, 3, 'broke out of a loop');
-  });
-
   test("utility: uniqueId", function() {
     var ids = [], i = 0;
     while(i++ < 100) ids.push(_.uniqueId());
diff --git a/underscore.js b/underscore.js
index 291b97617..424a87bdd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -17,8 +17,8 @@
   // Save the previous value of the `_` variable.
   var previousUnderscore = root._;
 
-  // Establish the object that gets thrown to break out of a loop iteration.
-  var breaker = typeof StopIteration !== 'undefined' ? StopIteration : '__break__';
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
 
   // Save bytes in the minified (but not gzipped) version:
   var ArrayProto = Array.prototype, ObjProto = Object.prototype;
@@ -67,20 +67,20 @@
   // Handles objects implementing `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
-    try {
-      if (nativeForEach && obj.forEach === nativeForEach) {
-        obj.forEach(iterator, context);
-      } else if (_.isNumber(obj.length)) {
-        for (var i = 0, l = obj.length; i < l; i++) iterator.call(context, obj[i], i, obj);
-      } else {
-        for (var key in obj) {
-          if (hasOwnProperty.call(obj, key)) iterator.call(context, obj[key], key, obj);
+    var value;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (_.isNumber(obj.length)) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (hasOwnProperty.call(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
         }
       }
-    } catch(e) {
-      if (e != breaker) throw e;
     }
-    return obj;
   };
 
   // Return the results of applying the iterator to each element.
@@ -126,10 +126,10 @@
   // Return the first value which passes a truth test. Aliased as `detect`.
   _.find = _.detect = function(obj, iterator, context) {
     var result;
-    each(obj, function(value, index, list) {
+    any(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) {
         result = value;
-        _.breakLoop();
+        return true;
       }
     });
     return result;
@@ -164,7 +164,7 @@
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
     each(obj, function(value, index, list) {
-      if (!(result = result && iterator.call(context, value, index, list))) _.breakLoop();
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
     });
     return result;
   };
@@ -172,12 +172,12 @@
   // Determine if at least one element in the object matches a truth test.
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
-  _.some = _.any = function(obj, iterator, context) {
+  var any = _.some = _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
     each(obj, function(value, index, list) {
-      if (result = iterator.call(context, value, index, list)) _.breakLoop();
+      if (result = iterator.call(context, value, index, list)) return breaker;
     });
     return result;
   };
@@ -187,8 +187,8 @@
   _.include = _.contains = function(obj, target) {
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     var found = false;
-    each(obj, function(value) {
-      if (found = value === target) _.breakLoop();
+    any(obj, function(value) {
+      if (found = value === target) return true;
     });
     return found;
   };
@@ -642,11 +642,6 @@
     for (var i = 0; i < n; i++) iterator.call(context, i);
   };
 
-  // Break out of the middle of an iteration.
-  _.breakLoop = function() {
-    throw breaker;
-  };
-
   // Add your own custom functions to the Underscore object, ensuring that
   // they're correctly added to the OOP wrapper as well.
   _.mixin = function(obj) {

From c714175cf17f59a60b848a1f3bdaa1e3076fc1c1 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 1 Dec 2010 12:49:45 -0500
Subject: [PATCH 239/533] Underscore.js 1.1.3

---
 docs/docco.css       |   8 +-
 docs/underscore.html | 247 ++++++++++++++++++++++++-------------------
 index.html           |  74 ++++++++-----
 package.json         |   2 +-
 underscore-min.js    |  31 +++---
 underscore.js        |   4 +-
 6 files changed, 211 insertions(+), 155 deletions(-)

diff --git a/docs/docco.css b/docs/docco.css
index b2e601974..5aa0a8d73 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -16,17 +16,17 @@ p {
   margin: 0 0 15px 0;
 }
 h1, h2, h3, h4, h5, h6 {
-  margin: 40px 0 15px 0;
+  margin: 0px 0 15px 0;
 }
-  h3, h4, h5, h6 {
-    margin-top: 20px;
+  h1 {
+    margin-top: 40px;
   }
 #container {
   position: relative;
 }
 #background {
   position: fixed;
-  top: 0; left: 575px; right: 0; bottom: 0;
+  top: 0; left: 525px; right: 0; bottom: 0;
   background: #f5f5ff;
   border-left: 1px solid #e5e5ee;
   z-index: -1;
diff --git a/docs/underscore.html b/docs/underscore.html
index 76af64f34..44bed11a2 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,14 +1,14 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.3
+(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
-</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets thrown to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">StopIteration</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">?</span> <span class="nx">StopIteration</span> <span class="o">:</span> <span class="s1">&#39;__break__&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>                 <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
-      <span class="nx">unshift</span>               <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
-      <span class="nx">toString</span>              <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
-      <span class="nx">hasOwnProperty</span>        <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">,</span>
-      <span class="nx">propertyIsEnumerable</span>  <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">propertyIsEnumerable</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets returned to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="p">{};</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>            <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
+      <span class="nx">unshift</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
+      <span class="nx">toString</span>         <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
+      <span class="nx">hasOwnProperty</span>   <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
 are declared here.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span>
     <span class="nx">nativeForEach</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">forEach</span><span class="p">,</span>
     <span class="nx">nativeMap</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">map</span><span class="p">,</span>
@@ -20,24 +20,31 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
-    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Export Underscore to the global scope.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.2&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>, with backwards-compatibility
+for the old <code>require()</code> API. If we're not in CommonJS, add <code>_</code> to the
+global object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">module</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+    <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+    <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.3&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">try</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
-        <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-      <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="p">{</span>
-        <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
-      <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
-        <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-          <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">value</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
+      <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="p">{</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
+      <span class="p">}</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span>
+          <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
         <span class="p">}</span>
       <span class="p">}</span>
-    <span class="p">}</span> <span class="k">catch</span><span class="p">(</span><span class="nx">e</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">e</span> <span class="o">!=</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">throw</span> <span class="nx">e</span><span class="p">;</span>
     <span class="p">}</span>
-    <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
@@ -45,34 +52,39 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduce</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">===</span> <span class="nx">nativeReduce</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-      <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">initial</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
-      <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span> <span class="o">&amp;&amp;</span> <span class="nx">index</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
+        <span class="nx">memo</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+      <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+        <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
+      <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-      <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
-    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
         <span class="nx">result</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
-        <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+        <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
 Aliased as <code>select</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -81,48 +93,48 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
-Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
 Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
-    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span><span class="p">();</span>
+    <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">(</span><span class="nx">method</span> <span class="o">?</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]</span> <span class="o">:</span> <span class="nx">value</span><span class="p">).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -130,7 +142,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -138,7 +150,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -148,7 +160,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -157,44 +169,44 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">iterable</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
 with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">n</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
 check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">values</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.
 Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
 passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
@@ -202,26 +214,26 @@ passed-in arrays.</p>             </td>             <td class="code">
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span>  <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">),</span>
@@ -237,40 +249,58 @@ the native Python <code>range()</code> function. See
       <span class="nx">start</span> <span class="o">+=</span> <span class="nx">step</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span> <span class="o">||</span> <span class="p">{},</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">memo</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Internal function used to implement <code>_.throttle</code> and <code>_.debounce</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">limit</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="nx">debounce</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">timeout</span><span class="p">;</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">,</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
+      <span class="kd">var</span> <span class="nx">throttler</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+        <span class="nx">timeout</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
+        <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+      <span class="p">};</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span><span class="p">)</span> <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span> <span class="o">||</span> <span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
+during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">false</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
+be triggered. The function will be called after it stops being called for
+N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">wrapper</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -280,97 +310,96 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">concat</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">unshift</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
 isNaN(undefined) == true, so we make sure it's a number first.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nb">isNaN</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Number]&#39;</span> <span class="o">&amp;&amp;</span> <span class="nb">isNaN</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="k">typeof</span> <span class="nx">obj</span> <span class="o">==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Break out of the middle of an iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">breakLoop</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-    <span class="k">throw</span> <span class="nx">breaker</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">tmpl</span> <span class="o">=</span> <span class="s1">&#39;var __p=[],print=function(){__p.push.apply(__p,arguments);};&#39;</span> <span class="o">+</span>
       <span class="s1">&#39;with(obj||{}){__p.push(\&#39;&#39;</span> <span class="o">+</span>
-      <span class="nx">str</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s2">&quot;\\&#39;&quot;</span><span class="p">)</span>
+      <span class="nx">str</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\/g</span><span class="p">,</span> <span class="s1">&#39;\\\\&#39;</span><span class="p">)</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s2">&quot;\\&#39;&quot;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">interpolate</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
            <span class="k">return</span> <span class="s2">&quot;&#39;,&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;,&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
@@ -384,31 +413,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 1aa926969..e1d2cb68b 100644
--- a/index.html
+++ b/index.html
@@ -105,7 +105,7 @@
       The project is
       <a href="http://github.com/documentcloud/underscore/">hosted on GitHub</a>.
       You can report bugs and discuss features on the
-      <a href="http://github.com/documentcloud/jammit/issues">issues page</a>,
+      <a href="http://github.com/documentcloud/underscore/issues">issues page</a>,
       on Freenode in the <tt>#documentcloud</tt> channel,
       or send tweets to <a href="http://twitter.com/documentcloud">@documentcloud</a>.
     </p>
@@ -118,11 +118,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.2)</a></td>
-        <td><i>25kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.1.3)</a></td>
+        <td><i>26kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.2)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.3)</a></td>
         <td><i>3kb, Packed and Gzipped</i></td>
       </tr>
     </table>
@@ -159,6 +159,7 @@
       <br />
       <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, 
       <a href="#memoize">memoize</a>, <a href="#delay">delay</a>, <a href="#defer">defer</a>, 
+      <a href="#throttle">throttle</a>, <a href="#debounce">debounce</a>, 
       <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
     </p>
 
@@ -180,8 +181,8 @@
       <br />
       <span class="methods"><a href="#noConflict">noConflict</a>,
       <a href="#identity">identity</a>, <a href="#times">times</a>, 
-      <a href="#breakLoop">breakLoop</a>, <a href="#mixin">mixin</a>, 
-      <a href="#uniqueId">uniqueId</a>, <a href="#template">template</a></span>
+      <a href="#mixin">mixin</a>, <a href="#uniqueId">uniqueId</a>, 
+      <a href="#template">template</a></span>
     </p>
 
     <p>
@@ -249,8 +250,7 @@ _(lyrics).chain()
         function. The <b>iterator</b> is bound to the <b>context</b> object, if one is
         passed. Each invocation of <b>iterator</b> is called with three arguments:
         <tt>(element, index, list)</tt>. If <b>list</b> is a JavaScript object, <b>iterator</b>'s
-        arguments will be <tt>(value, key, list)</tt>. Use <a href="#breakLoop"><tt>breakLoop</tt></a>
-        to break out of the iteration. Delegates to the native
+        arguments will be <tt>(value, key, list)</tt>. Delegates to the native
         <b>forEach</b> function if it exists.
       </p>
       <pre>
@@ -707,6 +707,33 @@ _.delay(log, 1000, 'logged later');
       <pre>
 _.defer(function(){ alert('deferred'); });
 // Returns from the function before the alert runs.
+</pre>
+
+      <p id="throttle">
+        <b class="header">throttle</b><code>_.throttle(function, wait)</code>
+        <br />
+        Returns a throttled version of the function, that, when invoked repeatedly, 
+        will only actually call the wrapped function at most once per every <b>wait</b>
+        milliseconds. Useful for rate-limiting events that occur faster than you
+        can keep up with.
+      </p>
+      <pre>
+var throttled = _.throttle(updatePosition, 100);
+$(window).scroll(throttled);
+</pre>
+
+      <p id="debounce">
+        <b class="header">debounce</b><code>_.debounce(function, wait)</code>
+        <br />
+        Repeated calls to a debounced function will postpone it's execution
+        until after <b>wait</b> milliseconds have elapsed. Useful for implementing
+        behavior that should only happen <i>after</i> the input has stopped arriving.
+        For example: rendering a preview of a Markdown comment, recalculating a
+        layout after the window has stopped being resized...
+      </p>
+      <pre>
+var lazyLayout _.debounce(calculateLayout, 300);
+$(window).resize(lazyLayout);
 </pre>
 
       <p id="wrap">
@@ -1006,22 +1033,6 @@ moe === _.identity(moe);
       <pre>
 _(3).times(function(){ genie.grantWish(); });</pre>
 
-      <p id="breakLoop">
-        <b class="header">breakLoop</b><code>_.breakLoop()</code>
-        <br />
-        Breaks out of the current loop iteration. Similar to the <tt>break</tt>
-        keyword in regular "for" loop, but works within an iterator function.
-        Uses the native <tt>StopIteration</tt> object in JavaScript 1.7 compliant
-        browsers.
-      </p>
-      <pre>
-var result = null;
-_.each([1, 2, 3], function(num) {
-  if ((result = num) == 2) _.breakLoop();
-});
-result;
-=&gt; 2</pre>
-
       <p id="mixin">
         <b class="header">mixin</b><code>_.mixin(object)</code>
         <br />
@@ -1170,6 +1181,21 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.1.3</b> &mdash; <small><i>Dec 1, 2010</i></small><br />
+        In CommonJS, Underscore may now be required with just: <br />
+        <tt>var _ = require("underscore")</tt>.
+        Added <tt>_.throttle</tt> and <tt>_.debounce</tt> functions.
+        Removed <tt>_.breakLoop</tt>, in favor of an ECMA5-style un-<i>break</i>-able
+        each implementation &mdash; this removes the try/catch, and you'll now have
+        better stack traces for exceptions that are thrown within an Underscore iterator.
+        Improved the <b>isType</b> family of functions for better interoperability
+        with Internet Explorer host objects.
+        <tt>_.template</tt> now correctly escapes backslashes in templates.
+        Improved <tt>_.reduce</tt> compatibility with the ECMA5 version: 
+        if you don't pass an initial value, the first item in the collection is used.
+      </p>
+      
       <p>
         <b class="header">1.1.2</b><br />
         Fixed <tt>_.contains</tt>, which was mistakenly pointing at 
diff --git a/package.json b/package.json
index c5277099c..9e9aa2980 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "lib"           : ".",
   "main"          : "underscore.js",
-  "version"       : "1.1.2"
+  "version"       : "1.1.3"
 }
diff --git a/underscore-min.js b/underscore-min.js
index b800015b8..2979243e0 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,24 +1,25 @@
-// Underscore.js 1.1.2
+// Underscore.js 1.1.3
 // (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
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-null};c.isUndefined=function(a){return typeof a=="undefined"};c.noConflict=function(){o._=A;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.breakLoop=function(){throw r;};c.mixin=function(a){j(c.functions(a),function(b){F(b,c[b]=a[b])})};var G=0;c.uniqueId=function(a){var b=G++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+
-a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var q=function(a,b){return b?c(a).chain():a},F=function(a,b){l.prototype[a]=function(){var d=
-i.call(arguments);B.call(d,this._wrapped);return q(b.apply(c,d),this._chain)}};c.mixin(c);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=k[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return q(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];l.prototype[a]=function(){return q(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
+0)b=c.functions(a);k(b,function(d){a[d]=c.bind(a[d],a)});return a};c.memoize=function(a,b){var d={};b=b||c.identity;return function(){var e=b.apply(this,arguments);return e in d?d[e]:d[e]=a.apply(this,arguments)}};c.delay=function(a,b){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};c.defer=function(a){return c.delay.apply(c,[a,1].concat(i.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&
+clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};c.throttle=function(a,b){return B(a,b,false)};c.debounce=function(a,b){return B(a,b,true)};c.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments));return b.apply(b,d)}};c.compose=function(){var a=i.call(arguments);return function(){for(var b=i.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};c.keys=F||function(a){if(c.isArray(a))return c.range(0,a.length);var b=[],d;for(d in a)if(q.call(a,d))b[b.length]=d;return b};
+c.values=function(a){return c.map(a,c.identity)};c.functions=c.methods=function(a){return c.filter(c.keys(a),function(b){return c.isFunction(a[b])}).sort()};c.extend=function(a){k(i.call(arguments,1),function(b){for(var d in b)a[d]=b[d]});return a};c.clone=function(a){return c.isArray(a)?a.slice():c.extend({},a)};c.tap=function(a,b){b(a);return a};c.isEqual=function(a,b){if(a===b)return true;var d=typeof a;if(d!=typeof b)return false;if(a==b)return true;if(!a&&b||a&&!b)return false;if(a.isEqual)return a.isEqual(b);
+if(c.isDate(a)&&c.isDate(b))return a.getTime()===b.getTime();if(c.isNaN(a)&&c.isNaN(b))return false;if(c.isRegExp(a)&&c.isRegExp(b))return a.source===b.source&&a.global===b.global&&a.ignoreCase===b.ignoreCase&&a.multiline===b.multiline;if(d!=="object")return false;if(a.length&&a.length!==b.length)return false;d=c.keys(a);var e=c.keys(b);if(d.length!=e.length)return false;for(var f in a)if(!(f in b)||!c.isEqual(a[f],b[f]))return false;return true};c.isEmpty=function(a){if(c.isArray(a)||c.isString(a))return a.length===
+0;for(var b in a)if(q.call(a,b))return false;return true};c.isElement=function(a){return!!(a&&a.nodeType==1)};c.isArray=n||function(a){return!!(a&&a.concat&&a.unshift&&!a.callee)};c.isArguments=function(a){return!!(a&&a.callee)};c.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};c.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};c.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};c.isNaN=function(a){return E.call(a)==="[object Number]"&&isNaN(a)};
+c.isBoolean=function(a){return a===true||a===false};c.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};c.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};c.isNull=function(a){return a===null};c.isUndefined=function(a){return a===void 0};c.noConflict=function(){p._=C;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.mixin=function(a){k(c.functions(a),function(b){H(b,c[b]=a[b])})};var I=
+0;c.uniqueId=function(a){var b=I++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,
+"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var r=function(a,b){return b?c(a).chain():a},H=function(a,b){l.prototype[a]=function(){var d=i.call(arguments);D.call(d,this._wrapped);return r(b.apply(c,d),this._chain)}};c.mixin(c);k(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=j[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);
+return r(this._wrapped,this._chain)}});k(["concat","join","slice"],function(a){var b=j[a];l.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 424a87bdd..887d039c3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.1.2
+//     Underscore.js 1.1.3
 //     (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -58,7 +58,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.1.2';
+  _.VERSION = '1.1.3';
 
   // Collection Functions
   // --------------------

From 3b916a2cf788a4588f08323c39786b6fb5ddbca6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 2 Dec 2010 21:23:04 -0500
Subject: [PATCH 240/533] Adding a note about the _.each change.

---
 index.html | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.html b/index.html
index e1d2cb68b..e94751446 100644
--- a/index.html
+++ b/index.html
@@ -1194,6 +1194,8 @@ _([1, 2, 3]).value();
         <tt>_.template</tt> now correctly escapes backslashes in templates.
         Improved <tt>_.reduce</tt> compatibility with the ECMA5 version: 
         if you don't pass an initial value, the first item in the collection is used.
+        <tt>_.each</tt> no longer returns the iterated collection, for improved
+        consistency with ECMA5's <tt>forEach</tt>.
       </p>
       
       <p>

From 2120b27b22efd58622c4d2919ee5a9241bc233d3 Mon Sep 17 00:00:00 2001
From: Jason Davies <jason@jasondavies.com>
Date: Fri, 3 Dec 2010 13:01:58 +0000
Subject: [PATCH 241/533] Fix _.isEquals() for wrapped objects

This caught me out when writing some unit tests that use _.isEquals().
They were all passing even though I knew they shouldn't be, and I
realised I was checking equality with a wrapped object that I'd
forgotten to unwrap.
---
 test/objects.js | 8 +++++---
 underscore.js   | 3 +++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index b47de7fc4..f0a60ecfe 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -45,13 +45,15 @@ $(document).ready(function() {
     ok(_.isEqual(moe, clone), 'deep equality is true');
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
     ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
-	ok(NaN != NaN, 'NaN is not equal to NaN (native equality)');
-	ok(NaN !== NaN, 'NaN is not equal to NaN (native identity)');
+    ok(NaN != NaN, 'NaN is not equal to NaN (native equality)');
+    ok(NaN !== NaN, 'NaN is not equal to NaN (native identity)');
     ok(!_.isEqual(NaN, NaN), 'NaN is not equal to NaN');
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
-    ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'object with the same number of undefined keys are not equal');
+    ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
+    ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
+    equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, 'wrapped objects are equal');
   });
 
   test("objects: isEmpty", function() {
diff --git a/underscore.js b/underscore.js
index 887d039c3..ca580fc2b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -519,6 +519,9 @@
 
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
+    // Unwrap any wrapped objects
+    if (a && a._chain) a = a.value();
+    if (b && b._chain) b = b.value();
     // Check object identity.
     if (a === b) return true;
     // Different types?

From 70d760f4f5855d2540ee498e332dc50a26fb1466 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 3 Dec 2010 10:03:30 -0500
Subject: [PATCH 242/533] merging in jasondavies isEqual patch for wrapped
 objects.

---
 test/functions.js | 10 +++++-----
 underscore.js     |  6 +++---
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index b976977e7..61ab2ce4a 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -70,13 +70,13 @@ $(document).ready(function() {
   asyncTest("functions: throttle", 1, function() {
     var counter = 0;
     var incr = function(){ counter++; };
-    var throttledIncr = _.throttle(incr, 50);
+    var throttledIncr = _.throttle(incr, 100);
     throttledIncr(); throttledIncr(); throttledIncr();
-    setTimeout(throttledIncr, 60);
-    setTimeout(throttledIncr, 70);
-    setTimeout(throttledIncr, 110);
     setTimeout(throttledIncr, 120);
-    _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 200);
+    setTimeout(throttledIncr, 140);
+    setTimeout(throttledIncr, 220);
+    setTimeout(throttledIncr, 240);
+    _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 400);
   });
 
   asyncTest("functions: debounce", 1, function() {
diff --git a/underscore.js b/underscore.js
index ca580fc2b..5a0e4468e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -519,9 +519,6 @@
 
   // Perform a deep comparison to check if two objects are equal.
   _.isEqual = function(a, b) {
-    // Unwrap any wrapped objects
-    if (a && a._chain) a = a.value();
-    if (b && b._chain) b = b.value();
     // Check object identity.
     if (a === b) return true;
     // Different types?
@@ -531,6 +528,9 @@
     if (a == b) return true;
     // One is falsy and the other truthy.
     if ((!a && b) || (a && !b)) return false;
+    // Unwrap any wrapped objects
+    if (a._chain) a = a.value();
+    if (b._chain) b = b.value();
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
     // Check dates' integer values.

From e63f44f798636bab9b67707b3183532f9a2bf62f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 3 Dec 2010 10:03:50 -0500
Subject: [PATCH 243/533] period.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 5a0e4468e..87c5e4ec8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -528,7 +528,7 @@
     if (a == b) return true;
     // One is falsy and the other truthy.
     if ((!a && b) || (a && !b)) return false;
-    // Unwrap any wrapped objects
+    // Unwrap any wrapped objects.
     if (a._chain) a = a.value();
     if (b._chain) b = b.value();
     // One of them implements an isEqual()?

From ebe0cc6f4586ebf3dd011aac7c2b21f25b079675 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Fri, 3 Dec 2010 14:34:25 -0500
Subject: [PATCH 244/533] Access the `_wrapped` property directly instead of
 calling `value()` when unwrapping wrapped objects in `isEqual()`

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 87c5e4ec8..7b5d2d6c6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -529,8 +529,8 @@
     // One is falsy and the other truthy.
     if ((!a && b) || (a && !b)) return false;
     // Unwrap any wrapped objects.
-    if (a._chain) a = a.value();
-    if (b._chain) b = b.value();
+    if (a._chain) a = a._wrapped;
+    if (b._chain) b = b._wrapped;
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
     // Check dates' integer values.

From 8f86e3eb67a68bc3ac675d0d7ce4d6c2067f7871 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Mon, 6 Dec 2010 23:30:43 -0500
Subject: [PATCH 245/533] Improve compliance with Array methods in ES5 when
 passed a null value. (ES5 Array methods treat `null` like `[]`)

---
 test/arrays.js      |  2 ++
 test/collections.js | 27 +++++++++++++++++++++++++++
 underscore.js       | 23 ++++++++++++++++++-----
 3 files changed, 47 insertions(+), 5 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index d3077f41b..c7553fc57 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -83,6 +83,7 @@ $(document).ready(function() {
     equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
     equals(result, 1, 'works on an arguments object');
+    equals(_.indexOf(null, 2), -1, 'handles nulls properly');
   });
 
   test("arrays: lastIndexOf", function() {
@@ -92,6 +93,7 @@ $(document).ready(function() {
     equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
     var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
     equals(result, 5, 'works on an arguments object');
+    equals(_.indexOf(null, 2), -1, 'handles nulls properly');
   });
 
   test("arrays: range", function() {
diff --git a/test/collections.js b/test/collections.js
index 7cdf16587..442b205f1 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -29,6 +29,10 @@ $(document).ready(function() {
     answers = [];
     _.each({range : 1, speed : 2, length : 3}, function(v){ answers.push(v); });
     ok(answers.join(', '), '1, 2, 3', 'can iterate over objects with numeric length properties');
+
+    answers = 0;
+    _.each(null, function(){ ++answers; });
+    equals(answers, 0, 'handles a null properly');
   });
 
   test('collections: map', function() {
@@ -46,6 +50,9 @@ $(document).ready(function() {
 
     var ids = _.map(document.images, function(n){ return n.id; });
     ok(ids[0] == 'chart_image', 'can use collection methods on HTMLCollections');
+
+    var ifnull = _.map(null, function(){});
+    ok(_.isArray(ifnull) && ifnull.length === 0, 'handles a null properly');
   });
 
   test('collections: reduce', function() {
@@ -64,6 +71,16 @@ $(document).ready(function() {
 
     var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
     equals(sum, 6, 'default initial value');
+
+    var ifnull;
+    try {
+      _.reduce(null, function(){});
+    } catch (ex) {
+      ifnull = ex;
+    }
+    ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
+    ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
   });
 
   test('collections: reduceRight', function() {
@@ -75,6 +92,16 @@ $(document).ready(function() {
 
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
     equals(list, 'bazbarfoo', 'default initial value');
+
+    var ifnull;
+    try {
+      _.reduceRight(null, function(){});
+    } catch (ex) {
+      ifnull = ex;
+    }
+    ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
+    ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
   });
 
   test('collections: detect', function() {
diff --git a/underscore.js b/underscore.js
index 7b5d2d6c6..75953925c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -68,6 +68,7 @@
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
     var value;
+    if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
     } else if (_.isNumber(obj.length)) {
@@ -86,8 +87,9 @@
   // Return the results of applying the iterator to each element.
   // Delegates to **ECMAScript 5**'s native `map` if available.
   _.map = function(obj, iterator, context) {
-    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     each(obj, function(value, index, list) {
       results[results.length] = iterator.call(context, value, index, list);
     });
@@ -98,6 +100,7 @@
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     var initial = memo !== void 0;
+    if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
       return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
@@ -105,16 +108,19 @@
     each(obj, function(value, index, list) {
       if (!initial && index === 0) {
         memo = value;
+        initial = true;
       } else {
         memo = iterator.call(context, memo, value, index, list);
       }
     });
+    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
     return memo;
   };
 
   // The right-associative version of reduce, also known as `foldr`.
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
       return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
@@ -139,8 +145,9 @@
   // Delegates to **ECMAScript 5**'s native `filter` if available.
   // Aliased as `select`.
   _.filter = _.select = function(obj, iterator, context) {
-    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) results[results.length] = value;
     });
@@ -150,6 +157,7 @@
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     each(obj, function(value, index, list) {
       if (!iterator.call(context, value, index, list)) results[results.length] = value;
     });
@@ -161,8 +169,9 @@
   // Aliased as `all`.
   _.every = _.all = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) return breaker;
     });
@@ -174,8 +183,9 @@
   // Aliased as `any`.
   var any = _.some = _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) return breaker;
     });
@@ -185,8 +195,9 @@
   // Determine if a given value is included in the array or object using `===`.
   // Aliased as `contains`.
   _.include = _.contains = function(obj, target) {
-    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     var found = false;
+    if (obj == null) return found;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     any(obj, function(value) {
       if (found = value === target) return true;
     });
@@ -346,6 +357,7 @@
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to **ECMAScript 5**'s native `indexOf` if available.
   _.indexOf = function(array, item) {
+    if (array == null) return -1;
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
     for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;
@@ -354,6 +366,7 @@
 
   // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
   _.lastIndexOf = function(array, item) {
+    if (array == null) return -1;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
     while (i--) if (array[i] === item) return i;

From cdcf18b79c8572ace463d0c5b2f35c63f0508b50 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Mon, 6 Dec 2010 23:30:43 -0500
Subject: [PATCH 246/533] Improve compliance with Array methods in ES5 when
 passed a null value. (ES5 Array methods treat `null` like `[]`)

---
 test/arrays.js      |  2 ++
 test/collections.js | 27 +++++++++++++++++++++++++++
 underscore.js       | 23 ++++++++++++++++++-----
 3 files changed, 47 insertions(+), 5 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index d3077f41b..c7553fc57 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -83,6 +83,7 @@ $(document).ready(function() {
     equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
     equals(result, 1, 'works on an arguments object');
+    equals(_.indexOf(null, 2), -1, 'handles nulls properly');
   });
 
   test("arrays: lastIndexOf", function() {
@@ -92,6 +93,7 @@ $(document).ready(function() {
     equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
     var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
     equals(result, 5, 'works on an arguments object');
+    equals(_.indexOf(null, 2), -1, 'handles nulls properly');
   });
 
   test("arrays: range", function() {
diff --git a/test/collections.js b/test/collections.js
index 7cdf16587..442b205f1 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -29,6 +29,10 @@ $(document).ready(function() {
     answers = [];
     _.each({range : 1, speed : 2, length : 3}, function(v){ answers.push(v); });
     ok(answers.join(', '), '1, 2, 3', 'can iterate over objects with numeric length properties');
+
+    answers = 0;
+    _.each(null, function(){ ++answers; });
+    equals(answers, 0, 'handles a null properly');
   });
 
   test('collections: map', function() {
@@ -46,6 +50,9 @@ $(document).ready(function() {
 
     var ids = _.map(document.images, function(n){ return n.id; });
     ok(ids[0] == 'chart_image', 'can use collection methods on HTMLCollections');
+
+    var ifnull = _.map(null, function(){});
+    ok(_.isArray(ifnull) && ifnull.length === 0, 'handles a null properly');
   });
 
   test('collections: reduce', function() {
@@ -64,6 +71,16 @@ $(document).ready(function() {
 
     var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
     equals(sum, 6, 'default initial value');
+
+    var ifnull;
+    try {
+      _.reduce(null, function(){});
+    } catch (ex) {
+      ifnull = ex;
+    }
+    ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
+    ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
   });
 
   test('collections: reduceRight', function() {
@@ -75,6 +92,16 @@ $(document).ready(function() {
 
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
     equals(list, 'bazbarfoo', 'default initial value');
+
+    var ifnull;
+    try {
+      _.reduceRight(null, function(){});
+    } catch (ex) {
+      ifnull = ex;
+    }
+    ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
+    ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
   });
 
   test('collections: detect', function() {
diff --git a/underscore.js b/underscore.js
index 87c5e4ec8..1dd5b0cf3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -68,6 +68,7 @@
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
     var value;
+    if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
     } else if (_.isNumber(obj.length)) {
@@ -86,8 +87,9 @@
   // Return the results of applying the iterator to each element.
   // Delegates to **ECMAScript 5**'s native `map` if available.
   _.map = function(obj, iterator, context) {
-    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     each(obj, function(value, index, list) {
       results[results.length] = iterator.call(context, value, index, list);
     });
@@ -98,6 +100,7 @@
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     var initial = memo !== void 0;
+    if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
       return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
@@ -105,16 +108,19 @@
     each(obj, function(value, index, list) {
       if (!initial && index === 0) {
         memo = value;
+        initial = true;
       } else {
         memo = iterator.call(context, memo, value, index, list);
       }
     });
+    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
     return memo;
   };
 
   // The right-associative version of reduce, also known as `foldr`.
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
       return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
@@ -139,8 +145,9 @@
   // Delegates to **ECMAScript 5**'s native `filter` if available.
   // Aliased as `select`.
   _.filter = _.select = function(obj, iterator, context) {
-    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) results[results.length] = value;
     });
@@ -150,6 +157,7 @@
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     each(obj, function(value, index, list) {
       if (!iterator.call(context, value, index, list)) results[results.length] = value;
     });
@@ -161,8 +169,9 @@
   // Aliased as `all`.
   _.every = _.all = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) return breaker;
     });
@@ -174,8 +183,9 @@
   // Aliased as `any`.
   var any = _.some = _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
-    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
       if (result = iterator.call(context, value, index, list)) return breaker;
     });
@@ -185,8 +195,9 @@
   // Determine if a given value is included in the array or object using `===`.
   // Aliased as `contains`.
   _.include = _.contains = function(obj, target) {
-    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     var found = false;
+    if (obj == null) return found;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     any(obj, function(value) {
       if (found = value === target) return true;
     });
@@ -346,6 +357,7 @@
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to **ECMAScript 5**'s native `indexOf` if available.
   _.indexOf = function(array, item) {
+    if (array == null) return -1;
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
     for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;
@@ -354,6 +366,7 @@
 
   // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
   _.lastIndexOf = function(array, item) {
+    if (array == null) return -1;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
     while (i--) if (array[i] === item) return i;

From 3a113d2d886ade3f83e8e49bb144a877a939062e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 13 Dec 2010 16:25:55 -0500
Subject: [PATCH 247/533] Issue #79. Correctly setting 'this' in '_.wrap'

---
 test/functions.js | 5 +++++
 underscore.js     | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/functions.js b/test/functions.js
index 61ab2ce4a..3c9f6a2c1 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -96,6 +96,11 @@ $(document).ready(function() {
     var greet = function(name){ return "hi: " + name; };
     var backwards = _.wrap(greet, function(func, name){ return func(name) + ' ' + name.split('').reverse().join(''); });
     equals(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
+
+    var inner = function(){ return "Hello "; };
+    var obj   = {name : "Moe"};
+    obj.hi    = _.wrap(inner, function(fn){ return fn() + this.name; });
+    equals(obj.hi(), "Hello Moe");
   });
 
   test("functions: compose", function() {
diff --git a/underscore.js b/underscore.js
index 75953925c..6cb2527dd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -469,7 +469,7 @@
   _.wrap = function(func, wrapper) {
     return function() {
       var args = [func].concat(slice.call(arguments));
-      return wrapper.apply(wrapper, args);
+      return wrapper.apply(this, args);
     };
   };
 

From 8c2570b0baef1ba3fe9d9983e4b4d2b27d268b86 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 17 Dec 2010 10:35:53 -0500
Subject: [PATCH 248/533] Issue #68. Adding _.sortedIndexOf

---
 index.html          | 16 +++++++++++++++-
 test/collections.js | 14 ++++++++++++++
 underscore.js       | 10 ++++++++++
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index e94751446..23a1d47dd 100644
--- a/index.html
+++ b/index.html
@@ -142,6 +142,7 @@
       <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
       <a href="#max">max</a>, <a href="#min">min</a>,
       <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>,
+      <a href="#sortedIndexOf">sortedIndexOf</a>,
       <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
 
@@ -445,13 +446,26 @@ _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
         <b class="header">sortedIndex</b><code>_.sortedIndex(list, value, [iterator])</code>
         <br />
         Uses a binary search to determine the index at which the <b>value</b>
-        should be inserted into the <b>list</b> in order to maintain the <b>list</b>'s
+        <i>should</i> be inserted into the <b>list</b> in order to maintain the <b>list</b>'s
         sorted order. If an <b>iterator</b> is passed, it will be used to compute
         the sort ranking of each value.
       </p>
       <pre>
 _.sortedIndex([10, 20, 30, 40, 50], 35);
 =&gt; 3
+</pre>
+
+      <p id="sortedIndexOf">
+        <b class="header">sortedIndexOf</b><code>_.sortedIndexOf(list, value)</code>
+        <br />
+        Not to be confused with <tt>_.sortedIndex</tt>, this method works like 
+        the native <tt>indexOf</tt>, but uses binary search to efficiently
+        find the value in large, already-sorted arrays. Returns <tt>-1</tt>
+        if the value is not present.
+      </p>
+      <pre>
+_.sortedIndex([10, 20, 30, 40, 50], 30);
+=&gt; 2
 </pre>
 
       <p id="toArray">
diff --git a/test/collections.js b/test/collections.js
index 442b205f1..6c0e8830c 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -185,6 +185,20 @@ $(document).ready(function() {
     equals(index, 3, '35 should be inserted at index 3');
   });
 
+  test('collections: sortedIndexOf', function() {
+    var numbers = [10, 20, 30, 40, 50], num = 35;
+    var index = _.sortedIndexOf(numbers, num);
+    equals(index, -1, '35 is not in the list');
+
+    numbers = [10, 20, 30, 40, 50]; num = 40;
+    index = _.sortedIndexOf(numbers, num);
+    equals(index, 3, '40 is in the list');
+
+    numbers = [1, 40, 40, 40, 40, 40, 40, 40, 50, 60, 70]; num = 40;
+    index = _.sortedIndexOf(numbers, num);
+    equals(index, 1, '40 is in the list');
+  });
+
   test('collections: toArray', function() {
     ok(!_.isArray(arguments), 'arguments object is not an array');
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
diff --git a/underscore.js b/underscore.js
index 6cb2527dd..4d0851935 100644
--- a/underscore.js
+++ b/underscore.js
@@ -254,6 +254,8 @@
 
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
+  // Unlike `_.sortedIndexOf`, this function returns the array at which an
+  // element *should* be inserted, not where it actually is.
   _.sortedIndex = function(array, obj, iterator) {
     iterator = iterator || _.identity;
     var low = 0, high = array.length;
@@ -264,6 +266,14 @@
     return low;
   };
 
+  // Similar to native `indexOf`, but assumes that the array being searched
+  // is already sorted, giving much faster performance on large arrays.
+  // Not to be confused with `_.sortedIndex`.
+  _.sortedIndexOf = function(array, obj) {
+    var i = _.sortedIndex(array, obj);
+    return array[i] === obj ? i : -1;
+  };
+
   // Safely convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
     if (!iterable)                return [];

From d2d6cfe6675d18b058e52785c438a3c1a7502208 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 17 Dec 2010 10:57:12 -0500
Subject: [PATCH 249/533] Rework of #68, to use a flag to indexOf, instead of a
 separate function.

---
 index.html          | 20 ++++----------------
 test/arrays.js      | 12 ++++++++++++
 test/collections.js | 14 --------------
 underscore.js       | 18 +++++++-----------
 4 files changed, 23 insertions(+), 41 deletions(-)

diff --git a/index.html b/index.html
index 23a1d47dd..9be2ba75d 100644
--- a/index.html
+++ b/index.html
@@ -142,7 +142,6 @@
       <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
       <a href="#max">max</a>, <a href="#min">min</a>,
       <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>,
-      <a href="#sortedIndexOf">sortedIndexOf</a>,
       <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
 
@@ -453,19 +452,6 @@ _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
       <pre>
 _.sortedIndex([10, 20, 30, 40, 50], 35);
 =&gt; 3
-</pre>
-
-      <p id="sortedIndexOf">
-        <b class="header">sortedIndexOf</b><code>_.sortedIndexOf(list, value)</code>
-        <br />
-        Not to be confused with <tt>_.sortedIndex</tt>, this method works like 
-        the native <tt>indexOf</tt>, but uses binary search to efficiently
-        find the value in large, already-sorted arrays. Returns <tt>-1</tt>
-        if the value is not present.
-      </p>
-      <pre>
-_.sortedIndex([10, 20, 30, 40, 50], 30);
-=&gt; 2
 </pre>
 
       <p id="toArray">
@@ -599,11 +585,13 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
 </pre>
 
       <p id="indexOf">
-        <b class="header">indexOf</b><code>_.indexOf(array, value)</code>
+        <b class="header">indexOf</b><code>_.indexOf(array, value, [isSorted])</code>
         <br />
         Returns the index at which <b>value</b> can be found in the <b>array</b>,
         or <i>-1</i> if value is not present in the <b>array</b>. Uses the native
-        <b>indexOf</b> function unless it's missing.
+        <b>indexOf</b> function unless it's missing. If you're working with a 
+        large array, and you know that the array is already sorted, pass <tt>true</tt>
+        for <b>isSorted</b> to use a faster binary search.
       </p>
       <pre>
 _.indexOf([1, 2, 3], 2);
diff --git a/test/arrays.js b/test/arrays.js
index c7553fc57..7219c038e 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -84,6 +84,18 @@ $(document).ready(function() {
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
     equals(result, 1, 'works on an arguments object');
     equals(_.indexOf(null, 2), -1, 'handles nulls properly');
+
+    var numbers = [10, 20, 30, 40, 50], num = 35;
+    var index = _.indexOf(numbers, num, true);
+    equals(index, -1, '35 is not in the list');
+
+    numbers = [10, 20, 30, 40, 50]; num = 40;
+    index = _.indexOf(numbers, num, true);
+    equals(index, 3, '40 is in the list');
+
+    numbers = [1, 40, 40, 40, 40, 40, 40, 40, 50, 60, 70]; num = 40;
+    index = _.indexOf(numbers, num, true);
+    equals(index, 1, '40 is in the list');
   });
 
   test("arrays: lastIndexOf", function() {
diff --git a/test/collections.js b/test/collections.js
index 6c0e8830c..442b205f1 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -185,20 +185,6 @@ $(document).ready(function() {
     equals(index, 3, '35 should be inserted at index 3');
   });
 
-  test('collections: sortedIndexOf', function() {
-    var numbers = [10, 20, 30, 40, 50], num = 35;
-    var index = _.sortedIndexOf(numbers, num);
-    equals(index, -1, '35 is not in the list');
-
-    numbers = [10, 20, 30, 40, 50]; num = 40;
-    index = _.sortedIndexOf(numbers, num);
-    equals(index, 3, '40 is in the list');
-
-    numbers = [1, 40, 40, 40, 40, 40, 40, 40, 50, 60, 70]; num = 40;
-    index = _.sortedIndexOf(numbers, num);
-    equals(index, 1, '40 is in the list');
-  });
-
   test('collections: toArray', function() {
     ok(!_.isArray(arguments), 'arguments object is not an array');
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
diff --git a/underscore.js b/underscore.js
index 4d0851935..cf11afb5f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -254,8 +254,6 @@
 
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
-  // Unlike `_.sortedIndexOf`, this function returns the array at which an
-  // element *should* be inserted, not where it actually is.
   _.sortedIndex = function(array, obj, iterator) {
     iterator = iterator || _.identity;
     var low = 0, high = array.length;
@@ -266,14 +264,6 @@
     return low;
   };
 
-  // Similar to native `indexOf`, but assumes that the array being searched
-  // is already sorted, giving much faster performance on large arrays.
-  // Not to be confused with `_.sortedIndex`.
-  _.sortedIndexOf = function(array, obj) {
-    var i = _.sortedIndex(array, obj);
-    return array[i] === obj ? i : -1;
-  };
-
   // Safely convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
     if (!iterable)                return [];
@@ -366,8 +356,14 @@
   // we need this function. Return the position of the first occurrence of an
   // item in an array, or -1 if the item is not included in the array.
   // Delegates to **ECMAScript 5**'s native `indexOf` if available.
-  _.indexOf = function(array, item) {
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
     if (array == null) return -1;
+    if (isSorted) {
+      var i = _.sortedIndex(array, item);
+      return array[i] === item ? i : -1;
+    }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
     for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;

From 2dff99d518a7fc3024334b9c517338e9c2557157 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 20 Dec 2010 16:42:54 -0500
Subject: [PATCH 250/533] switching to canonical isNaN

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index cf11afb5f..319fc789b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -616,7 +616,7 @@
   // Is the given value NaN -- this one is interesting. NaN != NaN, and
   // isNaN(undefined) == true, so we make sure it's a number first.
   _.isNaN = function(obj) {
-    return toString.call(obj) === '[object Number]' && isNaN(obj);
+    return obj !== obj;
   };
 
   // Is a given value a boolean?

From 422d35438c93d02b363d71af340beddbd86c036c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 20 Dec 2010 16:52:24 -0500
Subject: [PATCH 251/533] updating _.isNaN comment doc.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 319fc789b..1f18e1e61 100644
--- a/underscore.js
+++ b/underscore.js
@@ -613,8 +613,8 @@
     return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
   };
 
-  // Is the given value NaN -- this one is interesting. NaN != NaN, and
-  // isNaN(undefined) == true, so we make sure it's a number first.
+  // Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
+  // that does not equal itself.
   _.isNaN = function(obj) {
     return obj !== obj;
   };

From a890afec1876423175e8cf08f5abe5de51d2391a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 20 Dec 2010 17:06:24 -0500
Subject: [PATCH 252/533] Issue #83 ... typo.

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 9be2ba75d..01d33d077 100644
--- a/index.html
+++ b/index.html
@@ -734,7 +734,7 @@ $(window).scroll(throttled);
         layout after the window has stopped being resized...
       </p>
       <pre>
-var lazyLayout _.debounce(calculateLayout, 300);
+var lazyLayout = _.debounce(calculateLayout, 300);
 $(window).resize(lazyLayout);
 </pre>
 

From b3a373a7166716bacef4643ad35254bd1993b3d5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 20 Dec 2010 17:39:57 -0500
Subject: [PATCH 253/533] safer but slower toArray fallback, in light of
 .callee throwing in strict mode.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 1f18e1e61..163268888 100644
--- a/underscore.js
+++ b/underscore.js
@@ -590,7 +590,7 @@
   // Is a given value an array?
   // Delegates to ECMA5's native Array.isArray
   _.isArray = nativeIsArray || function(obj) {
-    return !!(obj && obj.concat && obj.unshift && !obj.callee);
+    return toString.call(obj) === '[object Array]';
   };
 
   // Is a given variable an arguments object?

From fad002de5355f6788f3c300e97942b6799c9759d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 21 Dec 2010 00:26:25 -0500
Subject: [PATCH 254/533] trying to avoid obj.callee (strict mode)

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 163268888..9dfb2ad96 100644
--- a/underscore.js
+++ b/underscore.js
@@ -595,7 +595,7 @@
 
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
-    return !!(obj && obj.callee);
+    return !!(obj && hasOwnProperty.call(obj, 'callee'));
   };
 
   // Is a given value a function?

From f03d5fa57c7ff2375af149803058053c046b4230 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 9 Jan 2011 14:03:45 -0500
Subject: [PATCH 255/533] Underscore 1.1.4 is on the books.

---
 LICENSE              |   2 +-
 docs/underscore.html | 106 +++++++++++++++++++++++++------------------
 index.html           |  18 ++++++--
 package.json         |   2 +-
 underscore-min.js    |  40 ++++++++--------
 underscore.js        |   6 +--
 6 files changed, 102 insertions(+), 72 deletions(-)

diff --git a/LICENSE b/LICENSE
index d8cef485e..58c73b9e9 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2010 Jeremy Ashkenas, DocumentCloud
+Copyright (c) 2011 Jeremy Ashkenas, DocumentCloud
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
diff --git a/docs/underscore.html b/docs/underscore.html
index 44bed11a2..cbce926c5 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,5 +1,5 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.3
-(c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.4
+(c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
@@ -27,10 +27,11 @@ global object.</p>             </td>             <td class="code">
     <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.3&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.4&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">value</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="p">{</span>
@@ -46,8 +47,9 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if avai
     <span class="p">}</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
@@ -55,6 +57,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduce</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">===</span> <span class="nx">nativeReduce</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">initial</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
@@ -62,13 +65,16 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span> <span class="o">&amp;&amp;</span> <span class="nx">index</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">memo</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+        <span class="nx">initial</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
       <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
         <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
       <span class="p">}</span>
     <span class="p">});</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s2">&quot;Reduce of empty array with no initial value&quot;</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
@@ -87,14 +93,16 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
 Aliased as <code>select</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeFilter</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span> <span class="o">===</span> <span class="nx">nativeFilter</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
@@ -103,8 +111,9 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
@@ -113,16 +122,18 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
 Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
     <span class="p">});</span>
@@ -224,11 +235,19 @@ an index go together.</p>             </td>             <td class="code">
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.
+If the array is large and already in sort order, pass <code>true</code>
+for <strong>isSorted</strong> to use binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span> <span class="o">?</span> <span class="nx">i</span> <span class="o">:</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
+    <span class="p">}</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
@@ -298,7 +317,7 @@ allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
-      <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">wrapper</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -334,65 +353,66 @@ order to perform operations on intermediate results within the chain.</p>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">concat</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">unshift</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">callee</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is the given value NaN -- this one is interesting. NaN != NaN, and
-isNaN(undefined) == true, so we make sure it's a number first.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Number]&#39;</span> <span class="o">&amp;&amp;</span> <span class="nb">isNaN</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
+that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -413,31 +433,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 01d33d077..f4fe5c4f0 100644
--- a/index.html
+++ b/index.html
@@ -118,11 +118,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.3)</a></td>
-        <td><i>26kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.1.4)</a></td>
+        <td><i>27kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.3)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.4)</a></td>
         <td><i>3kb, Packed and Gzipped</i></td>
       </tr>
     </table>
@@ -1183,6 +1183,16 @@ _([1, 2, 3]).value();
 
       <h2>Change Log</h2>
       
+      <p>
+        <b class="header">1.1.4</b> &mdash; <small><i>Jan 9, 2011</i></small><br />
+        Improved compliance with ES5's Array methods when passing <tt>null</tt> 
+        as a value. <tt>_.wrap</tt> now correctly sets <tt>this</tt> for the
+        wrapped function. <tt>_.indexOf</tt> now takes an optional flag for
+        finding the insertion index in an array that is guaranteed to already
+        be sorted. Avoiding the use of <tt>.callee</tt>, to allow <tt>_.isArray</tt>
+        to work properly in ES5's strict mode.
+      </p>
+      
       <p>
         <b class="header">1.1.3</b> &mdash; <small><i>Dec 1, 2010</i></small><br />
         In CommonJS, Underscore may now be required with just: <br />
@@ -1197,7 +1207,7 @@ _([1, 2, 3]).value();
         Improved <tt>_.reduce</tt> compatibility with the ECMA5 version: 
         if you don't pass an initial value, the first item in the collection is used.
         <tt>_.each</tt> no longer returns the iterated collection, for improved
-        consistency with ECMA5's <tt>forEach</tt>.
+        consistency with ES5's <tt>forEach</tt>.
       </p>
       
       <p>
diff --git a/package.json b/package.json
index 9e9aa2980..d5c924d0b 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "lib"           : ".",
   "main"          : "underscore.js",
-  "version"       : "1.1.3"
+  "version"       : "1.1.4"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 2979243e0..9ac21fa26 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,25 +1,25 @@
-// Underscore.js 1.1.3
-// (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore.js 1.1.4
+// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
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+d){if(c.isArray(d))return b.concat(c.flatten(d));b[b.length]=d;return b},[])};c.without=function(a){var b=i.call(arguments,1);return c.filter(a,function(d){return!c.include(b,d)})};c.uniq=c.unique=function(a,b){return c.reduce(a,function(d,e,f){if(0==f||(b===true?c.last(d)!=e:!c.include(d,e)))d[d.length]=e;return d},[])};c.intersect=function(a){var b=i.call(arguments,1);return c.filter(c.uniq(a),function(d){return c.every(b,function(e){return c.indexOf(e,d)>=0})})};c.zip=function(){for(var a=i.call(arguments),
+b=c.max(c.pluck(a,"length")),d=Array(b),e=0;e<b;e++)d[e]=c.pluck(a,""+e);return d};c.indexOf=function(a,b,d){if(a==null)return-1;if(d){d=c.sortedIndex(a,b);return a[d]===b?d:-1}if(p&&a.indexOf===p)return a.indexOf(b);d=0;for(var e=a.length;d<e;d++)if(a[d]===b)return d;return-1};c.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};c.range=function(a,b,d){var e=i.call(arguments),f=e.length<=1;a=f?0:e[0];
+b=f?e[0]:e[1];d=e[2]||1;e=Math.max(Math.ceil((b-a)/d),0);f=0;for(var g=Array(e);f<e;){g[f++]=a;a+=d}return g};c.bind=function(a,b){var d=i.call(arguments,2);return function(){return a.apply(b||{},d.concat(i.call(arguments)))}};c.bindAll=function(a){var b=i.call(arguments,1);if(b.length==0)b=c.functions(a);k(b,function(d){a[d]=c.bind(a[d],a)});return a};c.memoize=function(a,b){var d={};b=b||c.identity;return function(){var e=b.apply(this,arguments);return e in d?d[e]:d[e]=a.apply(this,arguments)}};
+c.delay=function(a,b){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};c.defer=function(a){return c.delay.apply(c,[a,1].concat(i.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};c.throttle=function(a,b){return B(a,b,false)};c.debounce=function(a,b){return B(a,b,true)};c.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments));return b.apply(this,
+d)}};c.compose=function(){var a=i.call(arguments);return function(){for(var b=i.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};c.keys=F||function(a){if(c.isArray(a))return c.range(0,a.length);var b=[],d;for(d in a)if(o.call(a,d))b[b.length]=d;return b};c.values=function(a){return c.map(a,c.identity)};c.functions=c.methods=function(a){return c.filter(c.keys(a),function(b){return c.isFunction(a[b])}).sort()};c.extend=function(a){k(i.call(arguments,1),function(b){for(var d in b)a[d]=
+b[d]});return a};c.clone=function(a){return c.isArray(a)?a.slice():c.extend({},a)};c.tap=function(a,b){b(a);return a};c.isEqual=function(a,b){if(a===b)return true;var d=typeof a;if(d!=typeof b)return false;if(a==b)return true;if(!a&&b||a&&!b)return false;if(a._chain)a=a._wrapped;if(b._chain)b=b._wrapped;if(a.isEqual)return a.isEqual(b);if(c.isDate(a)&&c.isDate(b))return a.getTime()===b.getTime();if(c.isNaN(a)&&c.isNaN(b))return false;if(c.isRegExp(a)&&c.isRegExp(b))return a.source===b.source&&a.global===
+b.global&&a.ignoreCase===b.ignoreCase&&a.multiline===b.multiline;if(d!=="object")return false;if(a.length&&a.length!==b.length)return false;d=c.keys(a);var e=c.keys(b);if(d.length!=e.length)return false;for(var f in a)if(!(f in b)||!c.isEqual(a[f],b[f]))return false;return true};c.isEmpty=function(a){if(c.isArray(a)||c.isString(a))return a.length===0;for(var b in a)if(o.call(a,b))return false;return true};c.isElement=function(a){return!!(a&&a.nodeType==1)};c.isArray=n||function(a){return E.call(a)===
+"[object Array]"};c.isArguments=function(a){return!!(a&&o.call(a,"callee"))};c.isFunction=function(a){return!!(a&&a.constructor&&a.call&&a.apply)};c.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};c.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};c.isNaN=function(a){return a!==a};c.isBoolean=function(a){return a===true||a===false};c.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};c.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||
+a.ignoreCase===false))};c.isNull=function(a){return a===null};c.isUndefined=function(a){return a===void 0};c.noConflict=function(){q._=C;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.mixin=function(a){k(c.functions(a),function(b){H(b,c[b]=a[b])})};var I=0;c.uniqueId=function(a){var b=I++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+
+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var r=function(a,b){return b?c(a).chain():a},H=function(a,b){l.prototype[a]=function(){var d=
+i.call(arguments);D.call(d,this._wrapped);return r(b.apply(c,d),this._chain)}};c.mixin(c);k(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=j[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});k(["concat","join","slice"],function(a){var b=j[a];l.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 9dfb2ad96..faa906005 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,5 +1,5 @@
-//     Underscore.js 1.1.3
-//     (c) 2010 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore.js 1.1.4
+//     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
 //     Oliver Steele's Functional, and John Resig's Micro-Templating.
@@ -58,7 +58,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.1.3';
+  _.VERSION = '1.1.4';
 
   // Collection Functions
   // --------------------

From 52f66a807c8e28ffa6faec8c2dc24dba3025adc4 Mon Sep 17 00:00:00 2001
From: lifesinger <lifesinger@gmail.com>
Date: Mon, 17 Jan 2011 14:48:43 +0800
Subject: [PATCH 256/533] remove unused code and avoid variable redeclaration

---
 underscore.js | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/underscore.js b/underscore.js
index faa906005..4a9400d7c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -67,7 +67,6 @@
   // Handles objects implementing `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
-    var value;
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
@@ -360,12 +359,13 @@
   // for **isSorted** to use binary search.
   _.indexOf = function(array, item, isSorted) {
     if (array == null) return -1;
+    var i, l;
     if (isSorted) {
-      var i = _.sortedIndex(array, item);
+      i = _.sortedIndex(array, item);
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    for (var i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
+    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;
   };
 
@@ -383,14 +383,15 @@
   // the native Python `range()` function. See
   // [the Python documentation](http://docs.python.org/library/functions.html#range).
   _.range = function(start, stop, step) {
-    var args  = slice.call(arguments),
-        solo  = args.length <= 1,
-        start = solo ? 0 : args[0],
-        stop  = solo ? args[0] : args[1],
-        step  = args[2] || 1,
-        len   = Math.max(Math.ceil((stop - start) / step), 0),
-        idx   = 0,
-        range = new Array(len);
+    var args  = slice.call(arguments);
+    var solo = args.length <= 1;
+    start = solo ? 0 : args[0];
+    stop = solo ? args[0] : args[1];
+    step = args[2] || 1;
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
     while (idx < len) {
       range[idx++] = start;
       start += step;

From 840f19c102e63f5c440650da073fb3cce3181ca2 Mon Sep 17 00:00:00 2001
From: lifesinger <lifesinger@gmail.com>
Date: Mon, 17 Jan 2011 14:57:02 +0800
Subject: [PATCH 257/533] bug fix for _.memoize when key is derived from
 prototype

---
 test/functions.js | 7 +++++++
 underscore.js     | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/test/functions.js b/test/functions.js
index 3c9f6a2c1..230ebea9a 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -52,6 +52,13 @@ $(document).ready(function() {
     var fastFib = _.memoize(fib);
     equals(fib(10), 55, 'a memoized version of fibonacci produces identical results');
     equals(fastFib(10), 55, 'a memoized version of fibonacci produces identical results');
+
+    var o = function(str) {
+      return str;
+    };
+    var fastO = _.memoize(o);
+    equals(o('toString'), 'toString', 'checks hasOwnProperty');
+    equals(fastO('toString'), 'toString', 'checks hasOwnProperty');
   });
 
   asyncTest("functions: delay", 2, function() {
diff --git a/underscore.js b/underscore.js
index 4a9400d7c..343f335be 100644
--- a/underscore.js
+++ b/underscore.js
@@ -426,7 +426,7 @@
     hasher = hasher || _.identity;
     return function() {
       var key = hasher.apply(this, arguments);
-      return key in memo ? memo[key] : (memo[key] = func.apply(this, arguments));
+      return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
     };
   };
 

From 6c2693a5ea9cf9802563b8c394ddb5000e55a1fa Mon Sep 17 00:00:00 2001
From: lifesinger <lifesinger@gmail.com>
Date: Tue, 18 Jan 2011 10:01:36 +0800
Subject: [PATCH 258/533] improve arguments overloading in _.range method

---
 underscore.js | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/underscore.js b/underscore.js
index 343f335be..8723bee03 100644
--- a/underscore.js
+++ b/underscore.js
@@ -383,19 +383,21 @@
   // the native Python `range()` function. See
   // [the Python documentation](http://docs.python.org/library/functions.html#range).
   _.range = function(start, stop, step) {
-    var args  = slice.call(arguments);
-    var solo = args.length <= 1;
-    start = solo ? 0 : args[0];
-    stop = solo ? args[0] : args[1];
-    step = args[2] || 1;
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var range = [];
     var len = Math.max(Math.ceil((stop - start) / step), 0);
     var idx = 0;
-    var range = new Array(len);
 
-    while (idx < len) {
+    while(idx < len) {
       range[idx++] = start;
       start += step;
     }
+
     return range;
   };
 

From 49787c212df119f2a6ac074fb1af9bae7afa9b2c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Jan 2011 15:48:13 -0500
Subject: [PATCH 259/533] merging lifesinger's clarified range.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 8723bee03..ec9c46277 100644
--- a/underscore.js
+++ b/underscore.js
@@ -389,9 +389,9 @@
     }
     step = arguments[2] || 1;
 
-    var range = [];
     var len = Math.max(Math.ceil((stop - start) / step), 0);
     var idx = 0;
+    var range = new Array(len);
 
     while(idx < len) {
       range[idx++] = start;

From 2f369f8eca4add2e901ddc8f344c70665ba0a414 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Jan 2011 16:34:33 -0500
Subject: [PATCH 260/533] Fixing #95 ... Maloptimization of _.keys for sparse
 arrays.

---
 underscore.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index ec9c46277..7c25ec41a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -501,7 +501,6 @@
   // Retrieve the names of an object's properties.
   // Delegates to **ECMAScript 5**'s native `Object.keys`
   _.keys = nativeKeys || function(obj) {
-    if (_.isArray(obj)) return _.range(0, obj.length);
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
     return keys;

From 659ec2c16c35f4582f4221e4756d6ba1b7d0b953 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Jan 2011 16:46:17 -0500
Subject: [PATCH 261/533] fixing Underscore.string link to new maintainer.

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index f4fe5c4f0..8eb5fce71 100644
--- a/index.html
+++ b/index.html
@@ -1156,7 +1156,7 @@ _([1, 2, 3]).value();
       </p>
       
       <p>
-        <a href="http://esa-matti.suuronen.org/projects/underscore.strings/">Underscore.strings</a>,
+        <a href="https://github.com/edtsech/underscore.string">Underscore.string</a>,
         an Underscore extension that adds functions for string-manipulation: 
         <tt>trim</tt>, <tt>startsWith</tt>, <tt>contains</tt>, <tt>capitalize</tt>,
         <tt>reverse</tt>, <tt>sprintf</tt>, and more.

From 7aaf3616df5734bec62886faa6909b07a5d3c931 Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Thu, 27 Jan 2011 11:38:06 -0500
Subject: [PATCH 262/533] Issue #107: Fixing issue with _.first([1,2,3], 0)
 returning first element instead of empty array.

---
 test/arrays.js | 2 ++
 underscore.js  | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 7219c038e..e031afe9b 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -5,6 +5,7 @@ $(document).ready(function() {
   test("arrays: first", function() {
     equals(_.first([1,2,3]), 1, 'can pull out the first element of an array');
     equals(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"');
+    equals(_.first([1,2,3], 0).join(', '), "", 'can pass an index to first');
     equals(_.first([1,2,3], 2).join(', '), '1, 2', 'can pass an index to first');
     var result = (function(){ return _.first(arguments); })(4, 3, 2, 1);
     equals(result, 4, 'works on an arguments object.');
@@ -15,6 +16,7 @@ $(document).ready(function() {
   test("arrays: rest", function() {
     var numbers = [1, 2, 3, 4];
     equals(_.rest(numbers).join(", "), "2, 3, 4", 'working rest()');
+    equals(_.rest(numbers, 0).join(", "), "1, 2, 3, 4", 'working rest(0)');
     equals(_.rest(numbers, 2).join(', '), '3, 4', 'rest can take an index');
     var result = (function(){ return _(arguments).tail(); })(1, 2, 3, 4);
     equals(result.join(', '), '2, 3, 4', 'aliased as tail and works on arguments object');
diff --git a/underscore.js b/underscore.js
index 7c25ec41a..bd37e148b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -284,7 +284,7 @@
   // values in the array. Aliased as `head`. The **guard** check allows it to work
   // with `_.map`.
   _.first = _.head = function(array, n, guard) {
-    return n && !guard ? slice.call(array, 0, n) : array[0];
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
   };
 
   // Returns everything but the first entry of the array. Aliased as `tail`.
@@ -292,7 +292,7 @@
   // the rest of the values in the array from that index onward. The **guard**
   // check allows it to work with `_.map`.
   _.rest = _.tail = function(array, index, guard) {
-    return slice.call(array, _.isUndefined(index) || guard ? 1 : index);
+    return slice.call(array, (index == null) || guard ? 1 : index);
   };
 
   // Get the last element of an array.

From bdfd71021d53279ce801cd6e1580cf7e2f659ad6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 1 Feb 2011 20:22:45 -0500
Subject: [PATCH 263/533] greet, exclaim -> exclaim, greet. Issue #110

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 8eb5fce71..41951b650 100644
--- a/index.html
+++ b/index.html
@@ -766,7 +766,7 @@ hello();
       <pre>
 var greet    = function(name){ return "hi: " + name; };
 var exclaim  = function(statement){ return statement + "!"; };
-var welcome = _.compose(greet, exclaim);
+var welcome = _.compose(exclaim, greet);
 welcome('moe');
 =&gt; 'hi: moe!'
 </pre>

From 226b7d93448468f7d2133e89c438fdcd283d24be Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 1 Feb 2011 21:19:58 -0500
Subject: [PATCH 264/533] Adding _.defaults, Issue #106

---
 index.html      | 15 ++++++++++++++-
 test/objects.js | 15 +++++++++++++++
 underscore.js   |  8 ++++++++
 3 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 41951b650..74dc362c7 100644
--- a/index.html
+++ b/index.html
@@ -167,7 +167,7 @@
       <b>Objects</b>
       <br />
       <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
-      <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#clone">clone</a>, <a href="#tap">tap</a>,
+      <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#defaults">defaults</a>, <a href="#clone">clone</a>, <a href="#tap">tap</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
       <a href="#isNumber">isNumber</a>, <a href="#isBoolean">isBoolean</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
@@ -815,6 +815,19 @@ _.functions(_);
       <pre>
 _.extend({name : 'moe'}, {age : 50});
 =&gt; {name : 'moe', age : 50}
+</pre>
+
+      <p id="defaults">
+        <b class="header">defaults</b><code>_.defaults(object, *defaults)</code>
+        <br />
+        Fill in missing properties in <b>object</b> with default values from the
+        <b>defaults</b> objects. As soon as the property is filled, further defaults
+        will have no effect.
+      </p>
+      <pre>
+var iceCream = {flavor : "chocolate"};
+_.defaults(iceCream, {flavor : "vanilla", sprinkles : "lots"});
+=&gt; {flavor : "chocolate", sprinkles : "lots"}
 </pre>
 
       <p id="clone">
diff --git a/test/objects.js b/test/objects.js
index f0a60ecfe..d4bfac645 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -26,6 +26,21 @@ $(document).ready(function() {
     ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
   });
 
+  test("objects: defaults", function() {
+    var result;
+    var options = {zero: 0, one: 1, empty: "", nan: NaN, string: "string"};
+
+    _.defaults(options, {zero: 1, one: 10, twenty: 20});
+    equals(options.zero, 0, 'value exists');
+    equals(options.one, 1, 'value exists');
+    equals(options.twenty, 20, 'default applied');
+
+    _.defaults(options, {empty: "full"}, {nan: "nan"}, {word: "word"}, {word: "dog"});
+    equals(options.empty, "", 'value exists');
+    ok(_.isNaN(options.nan), "NaN isn't overridden");
+    equals(options.word, "word", 'new value is added, first one wins');
+  });
+
   test("objects: clone", function() {
     var moe = {name : 'moe', lucky : [13, 27, 34]};
     var clone = _.clone(moe);
diff --git a/underscore.js b/underscore.js
index bd37e148b..5aaaca372 100644
--- a/underscore.js
+++ b/underscore.js
@@ -525,6 +525,14 @@
     return obj;
   };
 
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) if (obj[prop] == null) obj[prop] = source[prop];
+    });
+    return obj;
+  };
+
   // Create a (shallow-cloned) duplicate of an object.
   _.clone = function(obj) {
     return _.isArray(obj) ? obj.slice() : _.extend({}, obj);

From b39205b3598a6533cbf0b9876432baa7f6af2473 Mon Sep 17 00:00:00 2001
From: Trevor Burnham <trevor@databraid.com>
Date: Tue, 8 Feb 2011 15:28:45 -0500
Subject: [PATCH 265/533] Adding _.once, for running a function once

---
 test/functions.js |  9 +++++++++
 underscore.js     | 11 +++++++++++
 2 files changed, 20 insertions(+)

diff --git a/test/functions.js b/test/functions.js
index 230ebea9a..88ee2e73d 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -98,6 +98,15 @@ $(document).ready(function() {
     setTimeout(debouncedIncr, 150);
     _.delay(function(){ ok(counter == 1, "incr was debounced"); start(); }, 220);
   });
+  
+  test("functions: once", function() {
+    var addBang = function(str) { return str + "!"; };
+    hi = "Hi";
+    hi2 = _.once(addBang, hi);
+    hi3 = _.once(addBang, hi);
+    equals(hi2, "Hi!");
+    equals(hi3, undefined);
+  });
 
   test("functions: wrap", function() {
     var greet = function(name){ return "hi: " + name; };
diff --git a/underscore.js b/underscore.js
index 5aaaca372..9f05b3ec9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -471,6 +471,17 @@
   _.debounce = function(func, wait) {
     return limit(func, wait, true);
   };
+  
+  // Runs a function only if it's never been run before.
+  _.once = function(func) {
+    if (_.indexOf(onceRunFunctions, func)) {
+      onceRunFunctions.push(func);
+      return func.apply(func, slice.call(arguments, 1));
+    }
+  }
+  
+  // Internal record of functions that have been run via `_.once`.
+  var onceRunFunctions = [];
 
   // Returns the first function passed as an argument to the second,
   // allowing you to adjust arguments, run code before and after, and

From ee9df31b175e374e2dbcd4b387a6194704f193a1 Mon Sep 17 00:00:00 2001
From: Michael Wolf <maw@pobox.com>
Date: Tue, 8 Feb 2011 15:58:39 -0600
Subject: [PATCH 266/533] point out that you can use print() inside of js code
 inside of templates

---
 index.html | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/index.html b/index.html
index 74dc362c7..bceac282c 100644
--- a/index.html
+++ b/index.html
@@ -1097,6 +1097,16 @@ var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&
 _.template(list, {people : ['moe', 'curly', 'larry']});
 =&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"</pre>
 
+      <p>
+        You can also use <tt>print</tt> from within JavaScript code.  This is
+        sometimes more convenient than using <tt>&lt;%= ... %&gt;</tt>.
+      </p>
+      
+      <pre>
+var compiled = _.template("<% print('Hello ' + epithet); %>");
+compiled({epithet: "dude"});
+=&gt; "Hello dude."</pre>
+
       <p>
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.

From 9c9731e08e3876afae912bf09acf816430fdeb39 Mon Sep 17 00:00:00 2001
From: Adam Craven <git@adamcraven.me>
Date: Sun, 20 Feb 2011 21:03:52 +0100
Subject: [PATCH 267/533] Added support for ECMAScript 5 native `bind` method
 if available. Additional unit test to cover multiple argument binds.

---
 test/functions.js | 4 ++++
 underscore.js     | 6 ++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 230ebea9a..f74bc7294 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -20,6 +20,10 @@ $(document).ready(function() {
 
     var func = _.bind(func, this, 'curly');
     equals(func(), 'hello: curly', 'the function was completely applied in advance');
+    
+    var func = function(salutation, firstname, lastname) { return salutation + ': ' + firstname + ' ' + lastname };
+    func = _.bind(func, this, 'hello', 'moe', 'curly');
+    equals(func(), 'hello: moe curly', 'the function was partially applied in advance and can accept multiple arguments');
   });
 
   test("functions: bindAll", function() {
diff --git a/underscore.js b/underscore.js
index 5aaaca372..854175858 100644
--- a/underscore.js
+++ b/underscore.js
@@ -21,7 +21,7 @@
   var breaker = {};
 
   // Save bytes in the minified (but not gzipped) version:
-  var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
 
   // Create quick reference variables for speed access to core prototypes.
   var slice            = ArrayProto.slice,
@@ -42,7 +42,8 @@
     nativeIndexOf      = ArrayProto.indexOf,
     nativeLastIndexOf  = ArrayProto.lastIndexOf,
     nativeIsArray      = Array.isArray,
-    nativeKeys         = Object.keys;
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
 
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
@@ -408,6 +409,7 @@
   // optionally). Binding with arguments is also known as `curry`.
   _.bind = function(func, obj) {
     var args = slice.call(arguments, 2);
+    if(nativeBind && func.bind === nativeBind) return FuncProto.bind.apply(func, slice.call(arguments, 1));
     return function() {
       return func.apply(obj || {}, args.concat(slice.call(arguments)));
     };

From ebde2daa4a73bb0570e59ce3423e3e0bff96aff0 Mon Sep 17 00:00:00 2001
From: Adam Craven <git@adamcraven.me>
Date: Sun, 20 Feb 2011 21:07:14 +0100
Subject: [PATCH 268/533] Updated 'bind' documentation to reflect native
 support.

---
 underscore.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/underscore.js b/underscore.js
index 854175858..d0200efe5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -407,6 +407,7 @@
 
   // Create a function bound to a given object (assigning `this`, and arguments,
   // optionally). Binding with arguments is also known as `curry`.
+  // Delegates to **ECMAScript 5**'s native `Object.bind` if available.
   _.bind = function(func, obj) {
     var args = slice.call(arguments, 2);
     if(nativeBind && func.bind === nativeBind) return FuncProto.bind.apply(func, slice.call(arguments, 1));

From 468160204dc7dc8772202b505ea6327f00419c5e Mon Sep 17 00:00:00 2001
From: Adam Craven <git@adamcraven.me>
Date: Sun, 20 Feb 2011 21:07:14 +0100
Subject: [PATCH 269/533] Updated 'bind' documentation to reflect native
 support.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index d0200efe5..6b5a0b06e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -407,7 +407,7 @@
 
   // Create a function bound to a given object (assigning `this`, and arguments,
   // optionally). Binding with arguments is also known as `curry`.
-  // Delegates to **ECMAScript 5**'s native `Object.bind` if available.
+  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
   _.bind = function(func, obj) {
     var args = slice.call(arguments, 2);
     if(nativeBind && func.bind === nativeBind) return FuncProto.bind.apply(func, slice.call(arguments, 1));

From b65d647de8405d314268092a9086a25771d575f2 Mon Sep 17 00:00:00 2001
From: Adam Craven <git@adamcraven.me>
Date: Sun, 20 Feb 2011 22:24:29 +0100
Subject: [PATCH 270/533] updated bind method to stop un-needed variable
 assignment when using native method.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 6b5a0b06e..54b9dcc98 100644
--- a/underscore.js
+++ b/underscore.js
@@ -409,8 +409,8 @@
   // optionally). Binding with arguments is also known as `curry`.
   // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
   _.bind = function(func, obj) {
-    var args = slice.call(arguments, 2);
     if(nativeBind && func.bind === nativeBind) return FuncProto.bind.apply(func, slice.call(arguments, 1));
+    var args = slice.call(arguments, 2);
     return function() {
       return func.apply(obj || {}, args.concat(slice.call(arguments)));
     };

From 095400d094aadac0f86e84a41fe894adfe331881 Mon Sep 17 00:00:00 2001
From: Adam Craven <git@adamcraven.me>
Date: Tue, 22 Feb 2011 13:43:39 +0100
Subject: [PATCH 271/533] Use existing alias for function bind.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 54b9dcc98..0bad089a4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -409,7 +409,7 @@
   // optionally). Binding with arguments is also known as `curry`.
   // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
   _.bind = function(func, obj) {
-    if(nativeBind && func.bind === nativeBind) return FuncProto.bind.apply(func, slice.call(arguments, 1));
+    if(nativeBind && func.bind === nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
     var args = slice.call(arguments, 2);
     return function() {
       return func.apply(obj || {}, args.concat(slice.call(arguments)));

From 78596866ab2dd17b6c7dd4ef1fa99879da48d553 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 28 Feb 2011 10:44:45 -0500
Subject: [PATCH 272/533] merging maw's doc patch.

---
 index.html | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index bceac282c..3ba293ffe 100644
--- a/index.html
+++ b/index.html
@@ -1103,9 +1103,9 @@ _.template(list, {people : ['moe', 'curly', 'larry']});
       </p>
       
       <pre>
-var compiled = _.template("<% print('Hello ' + epithet); %>");
-compiled({epithet: "dude"});
-=&gt; "Hello dude."</pre>
+var compiled = _.template("&lt;% print('Hello ' + epithet); %&gt;");
+compiled({epithet: "stooge"});
+=&gt; "Hello stooge."</pre>
 
       <p>
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's

From 513d322525c2cec2910d1a70236f9adb183bc9da Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 28 Feb 2011 10:54:12 -0500
Subject: [PATCH 273/533] Merging in the native bind branch.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 0bad089a4..3570486c4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -409,7 +409,7 @@
   // optionally). Binding with arguments is also known as `curry`.
   // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
   _.bind = function(func, obj) {
-    if(nativeBind && func.bind === nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
+    if (nativeBind && func.bind === nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
     var args = slice.call(arguments, 2);
     return function() {
       return func.apply(obj || {}, args.concat(slice.call(arguments)));

From 59ef91ee8013e4193f56aefec972461d428c8aef Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 28 Feb 2011 11:36:14 -0500
Subject: [PATCH 274/533] making interpolate/evaluate more clear.

---
 index.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 3ba293ffe..1cf3c4151 100644
--- a/index.html
+++ b/index.html
@@ -1111,7 +1111,9 @@ compiled({epithet: "stooge"});
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.
         Define an <b>interpolate</b> regex, and an (optional) <b>evaluate</b> regex
-        to match expressions that should be inserted and evaluated, respectively. 
+        to match expressions that should be inserted and evaluated, respectively.
+        If no <b>evaluate</b> regex is provided, your templates will only be 
+        capable of interpolating values. 
         For example, to perform
         <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a>
         style templating:

From 1f2c9c5fc18b5a1db5a0014eda42becbd703afab Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Fri, 4 Mar 2011 10:15:48 -0500
Subject: [PATCH 275/533] added regression test for issue #95

---
 test/objects.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index d4bfac645..06fb4cd6e 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -4,6 +4,9 @@ $(document).ready(function() {
 
   test("objects: keys", function() {
     equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
+    // the test above is not safe because it relies on for-in enumeration order
+    var a = []; a[1] = 0;
+    equals(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
   });
 
   test("objects: values", function() {

From 4869b4c6cab74a52024d013cf8203a831a31386c Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Sun, 20 Mar 2011 09:36:00 -0600
Subject: [PATCH 276/533] Issue #150: `_.bind` should allow binding functions
 to falsy values.

---
 test/functions.js | 7 ++++++-
 underscore.js     | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index f74bc7294..29f6ec7f7 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -20,10 +20,15 @@ $(document).ready(function() {
 
     var func = _.bind(func, this, 'curly');
     equals(func(), 'hello: curly', 'the function was completely applied in advance');
-    
+
     var func = function(salutation, firstname, lastname) { return salutation + ': ' + firstname + ' ' + lastname };
     func = _.bind(func, this, 'hello', 'moe', 'curly');
     equals(func(), 'hello: moe curly', 'the function was partially applied in advance and can accept multiple arguments');
+
+    func = function(context, message) { equals(this, context, message); };
+    _.bind(func, 0, 0, 'can bind a function to `0`')();
+    _.bind(func, '', '', 'can bind a function to an empty string')();
+    _.bind(func, false, false, 'can bind a function to `false`')();
   });
 
   test("functions: bindAll", function() {
diff --git a/underscore.js b/underscore.js
index 3570486c4..2b7968ddf 100644
--- a/underscore.js
+++ b/underscore.js
@@ -412,7 +412,7 @@
     if (nativeBind && func.bind === nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
     var args = slice.call(arguments, 2);
     return function() {
-      return func.apply(obj || {}, args.concat(slice.call(arguments)));
+      return func.apply(obj, args.concat(slice.call(arguments)));
     };
   };
 

From 48abcd84c536e5ce7778308cef2de78cae8c9f24 Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Sun, 20 Mar 2011 10:08:32 -0600
Subject: [PATCH 277/533] Issue #149: `_.keys` should throw a `TypeError` for
 non-objects.

---
 test/objects.js | 25 +++++++++++++++++++++++++
 underscore.js   |  1 +
 2 files changed, 26 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index d4bfac645..5fa9168ab 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -2,8 +2,33 @@ $(document).ready(function() {
 
   module("Object functions (values, extend, isEqual, and so on...)");
 
+  function raises(block, expected, message) {
+    var pass = typeof block == 'function',
+    isRegExp = expected && Object.prototype.toString.call(expected) == '[object RegExp]',
+    isFunction = !isRegExp && typeof expected == 'function';
+    if (!isFunction && !isRegExp && message == null) {
+      message = expected;
+      expected = null;
+    }
+    if (pass) {
+      try {
+        block();
+        pass = false;
+      } catch (error) {
+        pass = expected == null || (isRegExp && expected.test(error)) || (isFunction && expected.call(null, error));
+      }
+    }
+    ok(pass, typeof message == 'string' && message || 'error');
+  }
+
   test("objects: keys", function() {
+    var exception = /TypeError/;
     equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
+    raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
+    raises(function() { _.keys(void 0); }, exception, 'throws an error for `undefined` values');
+    raises(function() { _.keys(1); }, exception, 'throws an error for number primitives');
+    raises(function() { _.keys('a'); }, exception, 'throws an error for string primitives');
+    raises(function() { _.keys(true); }, exception, 'throws an error for boolean primitives');
   });
 
   test("objects: values", function() {
diff --git a/underscore.js b/underscore.js
index 2b7968ddf..1c83d0987 100644
--- a/underscore.js
+++ b/underscore.js
@@ -504,6 +504,7 @@
   // Retrieve the names of an object's properties.
   // Delegates to **ECMAScript 5**'s native `Object.keys`
   _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
     var keys = [];
     for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
     return keys;

From 25457982a86f22ceeaaf7a86964ba315de1ea797 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 20 Mar 2011 18:21:49 -0400
Subject: [PATCH 278/533] new version of qunit ... fixing up tests.

---
 test/objects.js       |   21 +-
 test/test.html        |    4 +-
 test/vendor/qunit.css |  203 +++++-
 test/vendor/qunit.js  | 1439 +++++++++++++++++++++++++++++++++++++++--
 4 files changed, 1595 insertions(+), 72 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 5fa9168ab..a3bdd5677 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -2,27 +2,8 @@ $(document).ready(function() {
 
   module("Object functions (values, extend, isEqual, and so on...)");
 
-  function raises(block, expected, message) {
-    var pass = typeof block == 'function',
-    isRegExp = expected && Object.prototype.toString.call(expected) == '[object RegExp]',
-    isFunction = !isRegExp && typeof expected == 'function';
-    if (!isFunction && !isRegExp && message == null) {
-      message = expected;
-      expected = null;
-    }
-    if (pass) {
-      try {
-        block();
-        pass = false;
-      } catch (error) {
-        pass = expected == null || (isRegExp && expected.test(error)) || (isFunction && expected.call(null, error));
-      }
-    }
-    ok(pass, typeof message == 'string' && message || 'error');
-  }
-
   test("objects: keys", function() {
-    var exception = /TypeError/;
+    var exception = /object/;
     equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
     raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
     raises(function() { _.keys(void 0); }, exception, 'throws an error for `undefined` values');
diff --git a/test/test.html b/test/test.html
index dbc30a7e8..c67acf596 100644
--- a/test/test.html
+++ b/test/test.html
@@ -22,13 +22,13 @@
   <ol id="qunit-tests"></ol>
   <br />
   <h1 class="qunit-header">Underscore Speed Suite</h1>
-  <h2 class="qunit-userAgent">
+  <p>
     A representative sample of the functions are benchmarked here, to provide
     a sense of how fast they might run in different browsers.
     Each iteration runs on an array of 1000 elements.<br /><br />
     For example, the 'intersect' test measures the number of times you can
     find the intersection of two thousand-element arrays in one second.
-  </h2>
+  </p>
   <br />
 
   <script type="text/html" id="template">
diff --git a/test/vendor/qunit.css b/test/vendor/qunit.css
index c12b16d8e..8d0d3a24b 100644
--- a/test/vendor/qunit.css
+++ b/test/vendor/qunit.css
@@ -1,17 +1,196 @@
-h1#qunit-header, h1.qunit-header { padding: 15px; font-size: large; background-color: #06b; color: white; font-family: 'trebuchet ms', verdana, arial; margin: 0; }
-h1#qunit-header a { color: white; }
+/** Font Family and Sizes */
 
-h2#qunit-banner { height: 2em; border-bottom: 1px solid white; background-color: #eee; margin: 0; font-family: 'trebuchet ms', verdana, arial; }
-h2#qunit-banner.pass { background-color: green; }
-h2#qunit-banner.fail { background-color: red; }
+#qunit-tests, #qunit-header, .qunit-header, #qunit-banner, #qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult {
+	font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial;
+}
 
-h2#qunit-userAgent, h2.qunit-userAgent { padding: 10px; background-color: #eee; color: black; margin: 0; font-size: small; font-weight: normal; font-family: 'trebuchet ms', verdana, arial; font-size: 10pt; }
+#qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult, #qunit-tests li { font-size: small; }
+#qunit-tests { font-size: smaller; }
 
-div#qunit-testrunner-toolbar { background: #eee; border-top: 1px solid black; padding: 10px; font-family: 'trebuchet ms', verdana, arial; margin: 0; font-size: 10pt; }
 
-ol#qunit-tests { font-family: 'trebuchet ms', verdana, arial; font-size: 10pt; }
-ol#qunit-tests li strong { cursor:pointer; }
-ol#qunit-tests .pass { color: green; } 
-ol#qunit-tests .fail { color: red; } 
+/** Resets */
 
-p#qunit-testresult { margin-left: 1em; font-size: 10pt; font-family: 'trebuchet ms', verdana, arial; }
\ No newline at end of file
+#qunit-tests, #qunit-tests ol, #qunit-header, #qunit-banner, #qunit-userAgent, #qunit-testresult {
+	margin: 0;
+	padding: 0;
+}
+
+
+/** Header */
+
+#qunit-header, .qunit-header {
+	padding: 0.5em 0 0.5em 1em;
+
+	color: #8699a4;
+	background-color: #0d3349;
+
+	font-size: 1.5em;
+	line-height: 1em;
+	font-weight: normal;
+
+	border-radius: 15px 15px 0 0;
+	-moz-border-radius: 15px 15px 0 0;
+	-webkit-border-top-right-radius: 15px;
+	-webkit-border-top-left-radius: 15px;
+}
+
+#qunit-header a {
+	text-decoration: none;
+	color: #c2ccd1;
+}
+
+#qunit-header a:hover,
+#qunit-header a:focus {
+	color: #fff;
+}
+
+#qunit-banner {
+	height: 5px;
+}
+
+#qunit-testrunner-toolbar {
+	padding: 0em 0 0.5em 2em;
+}
+
+#qunit-userAgent {
+	padding: 0.5em 0 0.5em 2.5em;
+	background-color: #2b81af;
+	color: #fff;
+	text-shadow: rgba(0, 0, 0, 0.5) 2px 2px 1px;
+}
+
+
+/** Tests: Pass/Fail */
+
+#qunit-tests {
+	list-style-position: inside;
+}
+
+#qunit-tests li {
+	padding: 0.4em 0.5em 0.4em 2.5em;
+	border-bottom: 1px solid #fff;
+	list-style-position: inside;
+}
+
+#qunit-tests li strong {
+	cursor: pointer;
+}
+
+#qunit-tests ol {
+	margin-top: 0.5em;
+	padding: 0.5em;
+
+	background-color: #fff;
+
+	border-radius: 15px;
+	-moz-border-radius: 15px;
+	-webkit-border-radius: 15px;
+
+	box-shadow: inset 0px 2px 13px #999;
+	-moz-box-shadow: inset 0px 2px 13px #999;
+	-webkit-box-shadow: inset 0px 2px 13px #999;
+}
+
+#qunit-tests table {
+	border-collapse: collapse;
+	margin-top: .2em;
+}
+
+#qunit-tests th {
+	text-align: right;
+	vertical-align: top;
+	padding: 0 .5em 0 0;
+}
+
+#qunit-tests td {
+	vertical-align: top;
+}
+
+#qunit-tests pre {
+	margin: 0;
+	white-space: pre-wrap;
+	word-wrap: break-word;
+}
+
+#qunit-tests del {
+	background-color: #e0f2be;
+	color: #374e0c;
+	text-decoration: none;
+}
+
+#qunit-tests ins {
+	background-color: #ffcaca;
+	color: #500;
+	text-decoration: none;
+}
+
+/*** Test Counts */
+
+#qunit-tests b.counts                       { color: black; }
+#qunit-tests b.passed                       { color: #5E740B; }
+#qunit-tests b.failed                       { color: #710909; }
+
+#qunit-tests li li {
+	margin: 0.5em;
+	padding: 0.4em 0.5em 0.4em 0.5em;
+	background-color: #fff;
+	border-bottom: none;
+	list-style-position: inside;
+}
+
+/*** Passing Styles */
+
+#qunit-tests li li.pass {
+	color: #5E740B;
+	background-color: #fff;
+	border-left: 26px solid #C6E746;
+}
+
+#qunit-tests .pass                          { color: #528CE0; background-color: #D2E0E6; }
+#qunit-tests .pass .test-name               { color: #366097; }
+
+#qunit-tests .pass .test-actual,
+#qunit-tests .pass .test-expected           { color: #999999; }
+
+#qunit-banner.qunit-pass                    { background-color: #C6E746; }
+
+/*** Failing Styles */
+
+#qunit-tests li li.fail {
+	color: #710909;
+	background-color: #fff;
+	border-left: 26px solid #EE5757;
+}
+
+#qunit-tests .fail                          { color: #000000; background-color: #EE5757; }
+#qunit-tests .fail .test-name,
+#qunit-tests .fail .module-name             { color: #000000; }
+
+#qunit-tests .fail .test-actual             { color: #EE5757; }
+#qunit-tests .fail .test-expected           { color: green;   }
+
+#qunit-banner.qunit-fail,
+#qunit-testrunner-toolbar                   { background-color: #EE5757; }
+
+
+/** Footer */
+
+#qunit-testresult {
+	padding: 0.5em 0.5em 0.5em 2.5em;
+
+	color: #2b81af;
+	background-color: #D2E0E6;
+
+	border-radius: 0 0 15px 15px;
+	-moz-border-radius: 0 0 15px 15px;
+	-webkit-border-bottom-right-radius: 15px;
+	-webkit-border-bottom-left-radius: 15px;
+}
+
+/** Fixture */
+
+#qunit-fixture {
+	position: absolute;
+	top: -10000px;
+	left: -10000px;
+}
\ No newline at end of file
diff --git a/test/vendor/qunit.js b/test/vendor/qunit.js
index 1fc2fe13a..345630bc4 100644
--- a/test/vendor/qunit.js
+++ b/test/vendor/qunit.js
@@ -1,6 +1,6 @@
 /*
  * QUnit - A JavaScript Unit Testing Framework
- * 
+ *
  * http://docs.jquery.com/QUnit
  *
  * Copyright (c) 2009 John Resig, Jörn Zaefferer
@@ -41,7 +41,7 @@ var QUnit = {
 			result.parentNode.removeChild( result );
 		}
 	},
-	
+
 	// call on start of module test to prepend name to all tests
 	module: function module(name, testEnvironment) {
 
@@ -66,7 +66,7 @@ var QUnit = {
 
 		QUnit.test(testName, expected, callback, true);
 	},
-	
+
 	test: function test(testName, expected, callback, async) {
 		var name = testName, testEnvironment = {};
 
@@ -175,12 +175,12 @@ var QUnit = {
 
 				var b = document.createElement("strong");
 				b.innerHTML = name + " <b style='color:black;'>(<b class='fail'>" + bad + "</b>, <b class='pass'>" + good + "</b>, " + config.assertions.length + ")</b>";
-				
+
 				addEvent(b, "click", function() {
 					var next = b.nextSibling, display = next.style.display;
 					next.style.display = display === "none" ? "block" : "none";
 				});
-				
+
 				addEvent(b, "dblclick", function(e) {
 					var target = (e || window.event).target;
 					if ( target.nodeName.toLowerCase() === "strong" ) {
@@ -241,7 +241,7 @@ var QUnit = {
 			}, 13);
 		}
 	},
-	
+
 	/**
 	 * Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
 	 */
@@ -277,11 +277,11 @@ var QUnit = {
 	equals: function equals(actual, expected, message) {
 		push(expected == actual, actual, expected, message);
 	},
-	
+
 	same: function(a, b, message) {
 		push(QUnit.equiv(a, b), a, b, message);
 	},
-	
+
 	start: function start() {
 		// A slight delay, to avoid any current callbacks
 		if ( window.setTimeout ) {
@@ -298,7 +298,7 @@ var QUnit = {
 			process();
 		}
 	},
-	
+
 	stop: function stop(timeout) {
 		config.blocking = true;
 
@@ -309,7 +309,7 @@ var QUnit = {
 			}, timeout);
 		}
 	},
-	
+
 	/**
 	 * Resets the test setup. Useful for tests that modify the DOM.
 	 */
@@ -320,7 +320,7 @@ var QUnit = {
 			jQuery.ajaxSettings = extend({}, config.ajaxSettings);
 		}
 	},
-	
+
 	/**
 	 * Trigger an event on an element.
 	 *
@@ -340,7 +340,7 @@ var QUnit = {
 			elem.fireEvent("on"+type);
 		}
 	},
-	
+
 	// Logging callbacks
 	done: function done(failures, total) {},
 	log: function log(result, message) {},
@@ -372,10 +372,10 @@ var config = {
 			config.noglobals = true;
 		}
 	}
-	
+
 	// restrict modules/tests by get parameters
 	config.filters = GETParams;
-	
+
 	// Figure out if we're running the tests from a server or not
 	QUnit.isLocal = !!(location.protocol === 'file:');
 })();
@@ -406,11 +406,11 @@ addEvent(window, "load", function() {
 	if ( userAgent ) {
 		userAgent.innerHTML = navigator.userAgent;
 	}
-	
+
 	var toolbar = id("qunit-testrunner-toolbar");
 	if ( toolbar ) {
 		toolbar.style.display = "none";
-		
+
 		var filter = document.createElement("input");
 		filter.type = "checkbox";
 		filter.id = "qunit-filter-pass";
@@ -497,7 +497,7 @@ function done() {
 		banner.className += " " + (config.stats.bad ? "fail" : "pass");
 	}
 
-	if ( tests ) {	
+	if ( tests ) {
 		var result = id("qunit-testresult");
 
 		if ( !result ) {
@@ -520,7 +520,7 @@ function validTest( name ) {
 	if ( !i ) {
 		return true;
 	}
-	
+
 	while ( i-- ) {
 		var filter = config.filters[i],
 			not = filter.charAt(0) == '!';
@@ -562,7 +562,7 @@ function process() {
 
 function saveGlobal() {
 	config.pollution = [];
-	
+
 	if ( config.noglobals ) {
 		for ( var key in window ) {
 			config.pollution.push( key );
@@ -573,7 +573,7 @@ function saveGlobal() {
 function checkPollution( name ) {
 	var old = config.pollution;
 	saveGlobal();
-	
+
 	var newGlobals = diff( old, config.pollution );
 	if ( newGlobals.length > 0 ) {
 		ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
@@ -650,7 +650,7 @@ QUnit.equiv = function () {
     function hoozit(o) {
         if (o.constructor === String) {
             return "string";
-            
+
         } else if (o.constructor === Boolean) {
             return "boolean";
 
@@ -672,7 +672,7 @@ QUnit.equiv = function () {
         // consider: typeof [] === object
         } else if (o instanceof Array) {
             return "array";
-        
+
         // consider: typeof new Date() === object
         } else if (o instanceof Date) {
             return "date";
@@ -695,7 +695,7 @@ QUnit.equiv = function () {
     }
 
     // Call the o related callback with the given arguments.
-    function bindCallbacks(o, callbacks, args) {
+    function handleEvents(o, callbacks, args) {
         var prop = hoozit(o);
         if (prop) {
             if (hoozit(callbacks[prop]) === "function") {
@@ -705,7 +705,7 @@ QUnit.equiv = function () {
             }
         }
     }
-    
+
     var callbacks = function () {
 
         // for string, boolean, number and null
@@ -819,7 +819,7 @@ QUnit.equiv = function () {
             } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || hoozit(a) !== hoozit(b)) {
                 return false; // don't lose time with error prone cases
             } else {
-                return bindCallbacks(a, callbacks, [b, a]);
+                return handleEvents(a, callbacks, [b, a]);
             }
 
         // apply transition with (1..n) arguments
@@ -845,7 +845,7 @@ QUnit.jsDump = (function() {
 		return '"' + str.toString().replace(/"/g, '\\"') + '"';
 	};
 	function literal( o ) {
-		return o + '';	
+		return o + '';
 	};
 	function join( pre, arr, post ) {
 		var s = jsDump.separator(),
@@ -858,21 +858,21 @@ QUnit.jsDump = (function() {
 		return [ pre, inner + arr, base + post ].join(s);
 	};
 	function array( arr ) {
-		var i = arr.length,	ret = Array(i);					
+		var i = arr.length,	ret = Array(i);
 		this.up();
 		while ( i-- )
-			ret[i] = this.parse( arr[i] );				
+			ret[i] = this.parse( arr[i] );
 		this.down();
 		return join( '[', ret, ']' );
 	};
-	
+
 	var reName = /^function (\w+)/;
-	
+
 	var jsDump = {
 		parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
 			var	parser = this.parsers[ type || this.typeOf(obj) ];
-			type = typeof parser;			
-			
+			type = typeof parser;
+
 			return type == 'function' ? parser.call( this, obj ) :
 				   type == 'string' ? parser :
 				   this.parsers.error;
@@ -915,7 +915,7 @@ QUnit.jsDump = (function() {
 			this.parsers[name] = parser;
 		},
 		// The next 3 are exposed so you can use them
-		quote:quote, 
+		quote:quote,
 		literal:literal,
 		join:join,
 		//
@@ -934,7 +934,7 @@ QUnit.jsDump = (function() {
 				if ( name )
 					ret += ' ' + name;
 				ret += '(';
-				
+
 				ret = [ ret, this.parse( fn, 'functionArgs' ), '){'].join('');
 				return join( ret, this.parse(fn,'functionCode'), '}' );
 			},
@@ -952,10 +952,10 @@ QUnit.jsDump = (function() {
 			node:function( node ) {
 				var open = this.HTML ? '&lt;' : '<',
 					close = this.HTML ? '&gt;' : '>';
-					
+
 				var tag = node.nodeName.toLowerCase(),
 					ret = open + tag;
-					
+
 				for ( var a in this.DOMAttrs ) {
 					var val = node[this.DOMAttrs[a]];
 					if ( val )
@@ -965,8 +965,8 @@ QUnit.jsDump = (function() {
 			},
 			functionArgs:function( fn ) {//function calls it internally, it's the arguments part of the function
 				var l = fn.length;
-				if ( !l ) return '';				
-				
+				if ( !l ) return '';
+
 				var args = Array(l);
 				while ( l-- )
 					args[l] = String.fromCharCode(97+l);//97 is 'a'
@@ -994,4 +994,1367 @@ QUnit.jsDump = (function() {
 	return jsDump;
 })();
 
+})(this);/*
+ * QUnit - A JavaScript Unit Testing Framework
+ *
+ * http://docs.jquery.com/QUnit
+ *
+ * Copyright (c) 2009 John Resig, Jörn Zaefferer
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ */
+
+(function(window) {
+
+var defined = {
+	setTimeout: typeof window.setTimeout !== "undefined",
+	sessionStorage: (function() {
+		try {
+			return !!sessionStorage.getItem;
+		} catch(e){
+			return false;
+		}
+  })()
+}
+
+var testId = 0;
+
+var Test = function(name, testName, expected, testEnvironmentArg, async, callback) {
+	this.name = name;
+	this.testName = testName;
+	this.expected = expected;
+	this.testEnvironmentArg = testEnvironmentArg;
+	this.async = async;
+	this.callback = callback;
+	this.assertions = [];
+};
+Test.prototype = {
+	init: function() {
+		var tests = id("qunit-tests");
+		if (tests) {
+			var b = document.createElement("strong");
+				b.innerHTML = "Running " + this.name;
+			var li = document.createElement("li");
+				li.appendChild( b );
+				li.id = this.id = "test-output" + testId++;
+			tests.appendChild( li );
+		}
+	},
+	setup: function() {
+		if (this.module != config.previousModule) {
+			if ( this.previousModule ) {
+				QUnit.moduleDone( this.module, config.moduleStats.bad, config.moduleStats.all );
+			}
+			config.previousModule = this.module;
+			config.moduleStats = { all: 0, bad: 0 };
+			QUnit.moduleStart( this.module, this.moduleTestEnvironment );
+		}
+
+		config.current = this;
+		this.testEnvironment = extend({
+			setup: function() {},
+			teardown: function() {}
+		}, this.moduleTestEnvironment);
+		if (this.testEnvironmentArg) {
+			extend(this.testEnvironment, this.testEnvironmentArg);
+		}
+
+		QUnit.testStart( this.testName, this.testEnvironment );
+
+		// allow utility functions to access the current test environment
+		// TODO why??
+		QUnit.current_testEnvironment = this.testEnvironment;
+
+		try {
+			if ( !config.pollution ) {
+				saveGlobal();
+			}
+
+			this.testEnvironment.setup.call(this.testEnvironment);
+		} catch(e) {
+			// TODO use testName instead of name for no-markup message?
+			QUnit.ok( false, "Setup failed on " + this.name + ": " + e.message );
+		}
+	},
+	run: function() {
+		if ( this.async ) {
+			QUnit.stop();
+		}
+
+		try {
+			this.callback.call(this.testEnvironment);
+		} catch(e) {
+			// TODO use testName instead of name for no-markup message?
+			fail("Test " + this.name + " died, exception and test follows", e, this.callback);
+			QUnit.ok( false, "Died on test #" + (this.assertions.length + 1) + ": " + e.message + " - " + QUnit.jsDump.parse(e) );
+			// else next test will carry the responsibility
+			saveGlobal();
+
+			// Restart the tests if they're blocking
+			if ( config.blocking ) {
+				start();
+			}
+		}
+	},
+	teardown: function() {
+		try {
+			checkPollution();
+			this.testEnvironment.teardown.call(this.testEnvironment);
+		} catch(e) {
+			// TODO use testName instead of name for no-markup message?
+			QUnit.ok( false, "Teardown failed on " + this.name + ": " + e.message );
+		}
+	},
+	finish: function() {
+		if ( this.expected && this.expected != this.assertions.length ) {
+			QUnit.ok( false, "Expected " + this.expected + " assertions, but " + this.assertions.length + " were run" );
+		}
+
+		var good = 0, bad = 0,
+			tests = id("qunit-tests");
+
+		config.stats.all += this.assertions.length;
+		config.moduleStats.all += this.assertions.length;
+
+		if ( tests ) {
+			var ol  = document.createElement("ol");
+
+			for ( var i = 0; i < this.assertions.length; i++ ) {
+				var assertion = this.assertions[i];
+
+				var li = document.createElement("li");
+				li.className = assertion.result ? "pass" : "fail";
+				li.innerHTML = assertion.message || (assertion.result ? "okay" : "failed");
+				ol.appendChild( li );
+
+				if ( assertion.result ) {
+					good++;
+				} else {
+					bad++;
+					config.stats.bad++;
+					config.moduleStats.bad++;
+				}
+			}
+
+			// store result when possible
+			defined.sessionStorage && sessionStorage.setItem("qunit-" + this.testName, bad);
+
+			if (bad == 0) {
+				ol.style.display = "none";
+			}
+
+			var b = document.createElement("strong");
+			b.innerHTML = this.name + " <b class='counts'>(<b class='failed'>" + bad + "</b>, <b class='passed'>" + good + "</b>, " + this.assertions.length + ")</b>";
+
+			addEvent(b, "click", function() {
+				var next = b.nextSibling, display = next.style.display;
+				next.style.display = display === "none" ? "block" : "none";
+			});
+
+			addEvent(b, "dblclick", function(e) {
+				var target = e && e.target ? e.target : window.event.srcElement;
+				if ( target.nodeName.toLowerCase() == "span" || target.nodeName.toLowerCase() == "b" ) {
+					target = target.parentNode;
+				}
+				if ( window.location && target.nodeName.toLowerCase() === "strong" ) {
+					window.location.search = "?" + encodeURIComponent(getText([target]).replace(/\(.+\)$/, "").replace(/(^\s*|\s*$)/g, ""));
+				}
+			});
+
+			var li = id(this.id);
+			li.className = bad ? "fail" : "pass";
+			li.style.display = resultDisplayStyle(!bad);
+			li.removeChild( li.firstChild );
+			li.appendChild( b );
+			li.appendChild( ol );
+
+			if ( bad ) {
+				var toolbar = id("qunit-testrunner-toolbar");
+				if ( toolbar ) {
+					toolbar.style.display = "block";
+					id("qunit-filter-pass").disabled = null;
+				}
+			}
+
+		} else {
+			for ( var i = 0; i < this.assertions.length; i++ ) {
+				if ( !this.assertions[i].result ) {
+					bad++;
+					config.stats.bad++;
+					config.moduleStats.bad++;
+				}
+			}
+		}
+
+		try {
+			QUnit.reset();
+		} catch(e) {
+			// TODO use testName instead of name for no-markup message?
+			fail("reset() failed, following Test " + this.name + ", exception and reset fn follows", e, QUnit.reset);
+		}
+
+		QUnit.testDone( this.testName, bad, this.assertions.length );
+	},
+
+	queue: function() {
+		var test = this;
+		synchronize(function() {
+			test.init();
+		});
+		function run() {
+			// each of these can by async
+			synchronize(function() {
+				test.setup();
+			});
+			synchronize(function() {
+				test.run();
+			});
+			synchronize(function() {
+				test.teardown();
+			});
+			synchronize(function() {
+				test.finish();
+			});
+		}
+		// defer when previous test run passed, if storage is available
+		var bad = defined.sessionStorage && +sessionStorage.getItem("qunit-" + this.testName);
+		if (bad) {
+			run();
+		} else {
+			synchronize(run);
+		};
+	}
+
+}
+
+var QUnit = {
+
+	// call on start of module test to prepend name to all tests
+	module: function(name, testEnvironment) {
+		config.previousModule = config.currentModule;
+		config.currentModule = name;
+		config.currentModuleTestEnviroment = testEnvironment;
+	},
+
+	asyncTest: function(testName, expected, callback) {
+		if ( arguments.length === 2 ) {
+			callback = expected;
+			expected = 0;
+		}
+
+		QUnit.test(testName, expected, callback, true);
+	},
+
+	test: function(testName, expected, callback, async) {
+		var name = '<span class="test-name">' + testName + '</span>', testEnvironmentArg;
+
+		if ( arguments.length === 2 ) {
+			callback = expected;
+			expected = null;
+		}
+		// is 2nd argument a testEnvironment?
+		if ( expected && typeof expected === 'object') {
+			testEnvironmentArg =  expected;
+			expected = null;
+		}
+
+		if ( config.currentModule ) {
+			name = '<span class="module-name">' + config.currentModule + "</span>: " + name;
+		}
+
+		if ( !validTest(config.currentModule + ": " + testName) ) {
+			return;
+		}
+
+		var test = new Test(name, testName, expected, testEnvironmentArg, async, callback);
+		test.previousModule = config.previousModule;
+		test.module = config.currentModule;
+		test.moduleTestEnvironment = config.currentModuleTestEnviroment;
+		test.queue();
+	},
+
+	/**
+	 * Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
+	 */
+	expect: function(asserts) {
+		config.current.expected = asserts;
+	},
+
+	/**
+	 * Asserts true.
+	 * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
+	 */
+	ok: function(a, msg) {
+		a = !!a;
+		var details = {
+			result: a,
+			message: msg
+		};
+		msg = escapeHtml(msg);
+		QUnit.log(a, msg, details);
+		config.current.assertions.push({
+			result: a,
+			message: msg
+		});
+	},
+
+	/**
+	 * Checks that the first two arguments are equal, with an optional message.
+	 * Prints out both actual and expected values.
+	 *
+	 * Prefered to ok( actual == expected, message )
+	 *
+	 * @example equal( format("Received {0} bytes.", 2), "Received 2 bytes." );
+	 *
+	 * @param Object actual
+	 * @param Object expected
+	 * @param String message (optional)
+	 */
+	equal: function(actual, expected, message) {
+		QUnit.push(expected == actual, actual, expected, message);
+	},
+
+	notEqual: function(actual, expected, message) {
+		QUnit.push(expected != actual, actual, expected, message);
+	},
+
+	deepEqual: function(actual, expected, message) {
+		QUnit.push(QUnit.equiv(actual, expected), actual, expected, message);
+	},
+
+	notDeepEqual: function(actual, expected, message) {
+		QUnit.push(!QUnit.equiv(actual, expected), actual, expected, message);
+	},
+
+	strictEqual: function(actual, expected, message) {
+		QUnit.push(expected === actual, actual, expected, message);
+	},
+
+	notStrictEqual: function(actual, expected, message) {
+		QUnit.push(expected !== actual, actual, expected, message);
+	},
+
+	raises: function(block, expected, message) {
+		var actual, ok = false;
+
+		if (typeof expected === 'string') {
+			message = expected;
+			expected = null;
+		}
+
+		try {
+			block();
+		} catch (e) {
+			actual = e;
+		}
+
+		if (actual) {
+			// we don't want to validate thrown error
+			if (!expected) {
+				ok = true;
+			// expected is a regexp
+			} else if (QUnit.objectType(expected) === "regexp") {
+				ok = expected.test(actual);
+			// expected is a constructor
+			} else if (actual instanceof expected) {
+				ok = true;
+			// expected is a validation function which returns true is validation passed
+			} else if (expected.call({}, actual) === true) {
+				ok = true;
+			}
+		}
+
+		QUnit.ok(ok, message);
+	},
+
+	start: function() {
+		// A slight delay, to avoid any current callbacks
+		if ( defined.setTimeout ) {
+			window.setTimeout(function() {
+				if ( config.timeout ) {
+					clearTimeout(config.timeout);
+				}
+
+				config.blocking = false;
+				process();
+			}, 13);
+		} else {
+			config.blocking = false;
+			process();
+		}
+	},
+
+	stop: function(timeout) {
+		config.blocking = true;
+
+		if ( timeout && defined.setTimeout ) {
+			config.timeout = window.setTimeout(function() {
+				QUnit.ok( false, "Test timed out" );
+				QUnit.start();
+			}, timeout);
+		}
+	}
+
+};
+
+// Backwards compatibility, deprecated
+QUnit.equals = QUnit.equal;
+QUnit.same = QUnit.deepEqual;
+
+// Maintain internal state
+var config = {
+	// The queue of tests to run
+	queue: [],
+
+	// block until document ready
+	blocking: true
+};
+
+// Load paramaters
+(function() {
+	var location = window.location || { search: "", protocol: "file:" },
+		GETParams = location.search.slice(1).split('&');
+
+	for ( var i = 0; i < GETParams.length; i++ ) {
+		GETParams[i] = decodeURIComponent( GETParams[i] );
+		if ( GETParams[i] === "noglobals" ) {
+			GETParams.splice( i, 1 );
+			i--;
+			config.noglobals = true;
+		} else if ( GETParams[i].search('=') > -1 ) {
+			GETParams.splice( i, 1 );
+			i--;
+		}
+	}
+
+	// restrict modules/tests by get parameters
+	config.filters = GETParams;
+
+	// Figure out if we're running the tests from a server or not
+	QUnit.isLocal = !!(location.protocol === 'file:');
+})();
+
+// Expose the API as global variables, unless an 'exports'
+// object exists, in that case we assume we're in CommonJS
+if ( typeof exports === "undefined" || typeof require === "undefined" ) {
+	extend(window, QUnit);
+	window.QUnit = QUnit;
+} else {
+	extend(exports, QUnit);
+	exports.QUnit = QUnit;
+}
+
+// define these after exposing globals to keep them in these QUnit namespace only
+extend(QUnit, {
+	config: config,
+
+	// Initialize the configuration options
+	init: function() {
+		extend(config, {
+			stats: { all: 0, bad: 0 },
+			moduleStats: { all: 0, bad: 0 },
+			started: +new Date,
+			updateRate: 1000,
+			blocking: false,
+			autostart: true,
+			autorun: false,
+			filters: [],
+			queue: []
+		});
+
+		var tests = id("qunit-tests"),
+			banner = id("qunit-banner"),
+			result = id("qunit-testresult");
+
+		if ( tests ) {
+			tests.innerHTML = "";
+		}
+
+		if ( banner ) {
+			banner.className = "";
+		}
+
+		if ( result ) {
+			result.parentNode.removeChild( result );
+		}
+	},
+
+	/**
+	 * Resets the test setup. Useful for tests that modify the DOM.
+	 *
+	 * If jQuery is available, uses jQuery's html(), otherwise just innerHTML.
+	 */
+	reset: function() {
+		if ( window.jQuery ) {
+			jQuery( "#main, #qunit-fixture" ).html( config.fixture );
+		} else {
+			var main = id( 'main' ) || id( 'qunit-fixture' );
+			if ( main ) {
+				main.innerHTML = config.fixture;
+			}
+		}
+	},
+
+	/**
+	 * Trigger an event on an element.
+	 *
+	 * @example triggerEvent( document.body, "click" );
+	 *
+	 * @param DOMElement elem
+	 * @param String type
+	 */
+	triggerEvent: function( elem, type, event ) {
+		if ( document.createEvent ) {
+			event = document.createEvent("MouseEvents");
+			event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
+				0, 0, 0, 0, 0, false, false, false, false, 0, null);
+			elem.dispatchEvent( event );
+
+		} else if ( elem.fireEvent ) {
+			elem.fireEvent("on"+type);
+		}
+	},
+
+	// Safe object type checking
+	is: function( type, obj ) {
+		return QUnit.objectType( obj ) == type;
+	},
+
+	objectType: function( obj ) {
+		if (typeof obj === "undefined") {
+				return "undefined";
+
+		// consider: typeof null === object
+		}
+		if (obj === null) {
+				return "null";
+		}
+
+		var type = Object.prototype.toString.call( obj )
+			.match(/^\[object\s(.*)\]$/)[1] || '';
+
+		switch (type) {
+				case 'Number':
+						if (isNaN(obj)) {
+								return "nan";
+						} else {
+								return "number";
+						}
+				case 'String':
+				case 'Boolean':
+				case 'Array':
+				case 'Date':
+				case 'RegExp':
+				case 'Function':
+						return type.toLowerCase();
+		}
+		if (typeof obj === "object") {
+				return "object";
+		}
+		return undefined;
+	},
+
+	push: function(result, actual, expected, message) {
+		var details = {
+			result: result,
+			message: message,
+			actual: actual,
+			expected: expected
+		};
+
+		message = escapeHtml(message) || (result ? "okay" : "failed");
+		message = '<span class="test-message">' + message + "</span>";
+		expected = escapeHtml(QUnit.jsDump.parse(expected));
+		actual = escapeHtml(QUnit.jsDump.parse(actual));
+		var output = message + '<table><tr class="test-expected"><th>Expected: </th><td><pre>' + expected + '</pre></td></tr>';
+		if (actual != expected) {
+			output += '<tr class="test-actual"><th>Result: </th><td><pre>' + actual + '</pre></td></tr>';
+			output += '<tr class="test-diff"><th>Diff: </th><td><pre>' + QUnit.diff(expected, actual) +'</pre></td></tr>';
+		}
+		if (!result) {
+			var source = sourceFromStacktrace();
+			if (source) {
+				details.source = source;
+				output += '<tr class="test-source"><th>Source: </th><td><pre>' + source +'</pre></td></tr>';
+			}
+		}
+		output += "</table>";
+
+		QUnit.log(result, message, details);
+
+		config.current.assertions.push({
+			result: !!result,
+			message: output
+		});
+	},
+
+	// Logging callbacks
+	begin: function() {},
+	done: function(failures, total) {},
+	log: function(result, message) {},
+	testStart: function(name, testEnvironment) {},
+	testDone: function(name, failures, total) {},
+	moduleStart: function(name, testEnvironment) {},
+	moduleDone: function(name, failures, total) {}
+});
+
+if ( typeof document === "undefined" || document.readyState === "complete" ) {
+	config.autorun = true;
+}
+
+addEvent(window, "load", function() {
+	QUnit.begin();
+
+	// Initialize the config, saving the execution queue
+	var oldconfig = extend({}, config);
+	QUnit.init();
+	extend(config, oldconfig);
+
+	config.blocking = false;
+
+	var userAgent = id("qunit-userAgent");
+	if ( userAgent ) {
+		userAgent.innerHTML = navigator.userAgent;
+	}
+	var banner = id("qunit-header");
+	if ( banner ) {
+		var paramsIndex = location.href.lastIndexOf(location.search);
+		if ( paramsIndex > -1 ) {
+			var mainPageLocation = location.href.slice(0, paramsIndex);
+			if ( mainPageLocation == location.href ) {
+				banner.innerHTML = '<a href=""> ' + banner.innerHTML + '</a> ';
+			} else {
+				var testName = decodeURIComponent(location.search.slice(1));
+				banner.innerHTML = '<a href="' + mainPageLocation + '">' + banner.innerHTML + '</a> &#8250; <a href="">' + testName + '</a>';
+			}
+		}
+	}
+
+	var toolbar = id("qunit-testrunner-toolbar");
+	if ( toolbar ) {
+		toolbar.style.display = "none";
+
+		var filter = document.createElement("input");
+		filter.type = "checkbox";
+		filter.id = "qunit-filter-pass";
+		filter.disabled = true;
+		addEvent( filter, "click", function() {
+			var li = document.getElementsByTagName("li");
+			for ( var i = 0; i < li.length; i++ ) {
+				if ( li[i].className.indexOf("pass") > -1 ) {
+					li[i].style.display = filter.checked ? "none" : "";
+				}
+			}
+		});
+		toolbar.appendChild( filter );
+
+		var label = document.createElement("label");
+		label.setAttribute("for", "qunit-filter-pass");
+		label.innerHTML = "Hide passed tests";
+		toolbar.appendChild( label );
+	}
+
+	var main = id('main') || id('qunit-fixture');
+	if ( main ) {
+		config.fixture = main.innerHTML;
+	}
+
+	if (config.autostart) {
+		QUnit.start();
+	}
+});
+
+function done() {
+	config.autorun = true;
+
+	// Log the last module results
+	if ( config.currentModule ) {
+		QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
+	}
+
+	var banner = id("qunit-banner"),
+		tests = id("qunit-tests"),
+		html = ['Tests completed in ',
+		+new Date - config.started, ' milliseconds.<br/>',
+		'<span class="passed">', config.stats.all - config.stats.bad, '</span> tests of <span class="total">', config.stats.all, '</span> passed, <span class="failed">', config.stats.bad,'</span> failed.'].join('');
+
+	if ( banner ) {
+		banner.className = (config.stats.bad ? "qunit-fail" : "qunit-pass");
+	}
+
+	if ( tests ) {
+		var result = id("qunit-testresult");
+
+		if ( !result ) {
+			result = document.createElement("p");
+			result.id = "qunit-testresult";
+			result.className = "result";
+			tests.parentNode.insertBefore( result, tests.nextSibling );
+		}
+
+		result.innerHTML = html;
+	}
+
+	QUnit.done( config.stats.bad, config.stats.all );
+}
+
+function validTest( name ) {
+	var i = config.filters.length,
+		run = false;
+
+	if ( !i ) {
+		return true;
+	}
+
+	while ( i-- ) {
+		var filter = config.filters[i],
+			not = filter.charAt(0) == '!';
+
+		if ( not ) {
+			filter = filter.slice(1);
+		}
+
+		if ( name.indexOf(filter) !== -1 ) {
+			return !not;
+		}
+
+		if ( not ) {
+			run = true;
+		}
+	}
+
+	return run;
+}
+
+// so far supports only Firefox, Chrome and Opera (buggy)
+// could be extended in the future to use something like https://github.com/csnover/TraceKit
+function sourceFromStacktrace() {
+	try {
+		throw new Error();
+	} catch ( e ) {
+		if (e.stacktrace) {
+			// Opera
+			return e.stacktrace.split("\n")[6];
+		} else if (e.stack) {
+			// Firefox, Chrome
+			return e.stack.split("\n")[4];
+		}
+	}
+}
+
+function resultDisplayStyle(passed) {
+	return passed && id("qunit-filter-pass") && id("qunit-filter-pass").checked ? 'none' : '';
+}
+
+function escapeHtml(s) {
+	if (!s) {
+		return "";
+	}
+	s = s + "";
+	return s.replace(/[\&"<>\\]/g, function(s) {
+		switch(s) {
+			case "&": return "&amp;";
+			case "\\": return "\\\\";
+			case '"': return '\"';
+			case "<": return "&lt;";
+			case ">": return "&gt;";
+			default: return s;
+		}
+	});
+}
+
+function synchronize( callback ) {
+	config.queue.push( callback );
+
+	if ( config.autorun && !config.blocking ) {
+		process();
+	}
+}
+
+function process() {
+	var start = (new Date()).getTime();
+
+	while ( config.queue.length && !config.blocking ) {
+		if ( config.updateRate <= 0 || (((new Date()).getTime() - start) < config.updateRate) ) {
+			config.queue.shift()();
+		} else {
+			window.setTimeout( process, 13 );
+			break;
+		}
+	}
+  if (!config.blocking && !config.queue.length) {
+    done();
+  }
+}
+
+function saveGlobal() {
+	config.pollution = [];
+
+	if ( config.noglobals ) {
+		for ( var key in window ) {
+			config.pollution.push( key );
+		}
+	}
+}
+
+function checkPollution( name ) {
+	var old = config.pollution;
+	saveGlobal();
+
+	var newGlobals = diff( old, config.pollution );
+	if ( newGlobals.length > 0 ) {
+		ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
+		config.current.expected++;
+	}
+
+	var deletedGlobals = diff( config.pollution, old );
+	if ( deletedGlobals.length > 0 ) {
+		ok( false, "Deleted global variable(s): " + deletedGlobals.join(", ") );
+		config.current.expected++;
+	}
+}
+
+// returns a new Array with the elements that are in a but not in b
+function diff( a, b ) {
+	var result = a.slice();
+	for ( var i = 0; i < result.length; i++ ) {
+		for ( var j = 0; j < b.length; j++ ) {
+			if ( result[i] === b[j] ) {
+				result.splice(i, 1);
+				i--;
+				break;
+			}
+		}
+	}
+	return result;
+}
+
+function fail(message, exception, callback) {
+	if ( typeof console !== "undefined" && console.error && console.warn ) {
+		console.error(message);
+		console.error(exception);
+		console.warn(callback.toString());
+
+	} else if ( window.opera && opera.postError ) {
+		opera.postError(message, exception, callback.toString);
+	}
+}
+
+function extend(a, b) {
+	for ( var prop in b ) {
+		a[prop] = b[prop];
+	}
+
+	return a;
+}
+
+function addEvent(elem, type, fn) {
+	if ( elem.addEventListener ) {
+		elem.addEventListener( type, fn, false );
+	} else if ( elem.attachEvent ) {
+		elem.attachEvent( "on" + type, fn );
+	} else {
+		fn();
+	}
+}
+
+function id(name) {
+	return !!(typeof document !== "undefined" && document && document.getElementById) &&
+		document.getElementById( name );
+}
+
+// Test for equality any JavaScript type.
+// Discussions and reference: http://philrathe.com/articles/equiv
+// Test suites: http://philrathe.com/tests/equiv
+// Author: Philippe Rathé <prathe@gmail.com>
+QUnit.equiv = function () {
+
+    var innerEquiv; // the real equiv function
+    var callers = []; // stack to decide between skip/abort functions
+    var parents = []; // stack to avoiding loops from circular referencing
+
+    // Call the o related callback with the given arguments.
+    function bindCallbacks(o, callbacks, args) {
+        var prop = QUnit.objectType(o);
+        if (prop) {
+            if (QUnit.objectType(callbacks[prop]) === "function") {
+                return callbacks[prop].apply(callbacks, args);
+            } else {
+                return callbacks[prop]; // or undefined
+            }
+        }
+    }
+
+    var callbacks = function () {
+
+        // for string, boolean, number and null
+        function useStrictEquality(b, a) {
+            if (b instanceof a.constructor || a instanceof b.constructor) {
+                // to catch short annotaion VS 'new' annotation of a declaration
+                // e.g. var i = 1;
+                //      var j = new Number(1);
+                return a == b;
+            } else {
+                return a === b;
+            }
+        }
+
+        return {
+            "string": useStrictEquality,
+            "boolean": useStrictEquality,
+            "number": useStrictEquality,
+            "null": useStrictEquality,
+            "undefined": useStrictEquality,
+
+            "nan": function (b) {
+                return isNaN(b);
+            },
+
+            "date": function (b, a) {
+                return QUnit.objectType(b) === "date" && a.valueOf() === b.valueOf();
+            },
+
+            "regexp": function (b, a) {
+                return QUnit.objectType(b) === "regexp" &&
+                    a.source === b.source && // the regex itself
+                    a.global === b.global && // and its modifers (gmi) ...
+                    a.ignoreCase === b.ignoreCase &&
+                    a.multiline === b.multiline;
+            },
+
+            // - skip when the property is a method of an instance (OOP)
+            // - abort otherwise,
+            //   initial === would have catch identical references anyway
+            "function": function () {
+                var caller = callers[callers.length - 1];
+                return caller !== Object &&
+                        typeof caller !== "undefined";
+            },
+
+            "array": function (b, a) {
+                var i, j, loop;
+                var len;
+
+                // b could be an object literal here
+                if ( ! (QUnit.objectType(b) === "array")) {
+                    return false;
+                }
+
+                len = a.length;
+                if (len !== b.length) { // safe and faster
+                    return false;
+                }
+
+                //track reference to avoid circular references
+                parents.push(a);
+                for (i = 0; i < len; i++) {
+                    loop = false;
+                    for(j=0;j<parents.length;j++){
+                        if(parents[j] === a[i]){
+                            loop = true;//dont rewalk array
+                        }
+                    }
+                    if (!loop && ! innerEquiv(a[i], b[i])) {
+                        parents.pop();
+                        return false;
+                    }
+                }
+                parents.pop();
+                return true;
+            },
+
+            "object": function (b, a) {
+                var i, j, loop;
+                var eq = true; // unless we can proove it
+                var aProperties = [], bProperties = []; // collection of strings
+
+                // comparing constructors is more strict than using instanceof
+                if ( a.constructor !== b.constructor) {
+                    return false;
+                }
+
+                // stack constructor before traversing properties
+                callers.push(a.constructor);
+                //track reference to avoid circular references
+                parents.push(a);
+
+                for (i in a) { // be strict: don't ensures hasOwnProperty and go deep
+                    loop = false;
+                    for(j=0;j<parents.length;j++){
+                        if(parents[j] === a[i])
+                            loop = true; //don't go down the same path twice
+                    }
+                    aProperties.push(i); // collect a's properties
+
+                    if (!loop && ! innerEquiv(a[i], b[i])) {
+                        eq = false;
+                        break;
+                    }
+                }
+
+                callers.pop(); // unstack, we are done
+                parents.pop();
+
+                for (i in b) {
+                    bProperties.push(i); // collect b's properties
+                }
+
+                // Ensures identical properties name
+                return eq && innerEquiv(aProperties.sort(), bProperties.sort());
+            }
+        };
+    }();
+
+    innerEquiv = function () { // can take multiple arguments
+        var args = Array.prototype.slice.apply(arguments);
+        if (args.length < 2) {
+            return true; // end transition
+        }
+
+        return (function (a, b) {
+            if (a === b) {
+                return true; // catch the most you can
+            } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || QUnit.objectType(a) !== QUnit.objectType(b)) {
+                return false; // don't lose time with error prone cases
+            } else {
+                return bindCallbacks(a, callbacks, [b, a]);
+            }
+
+        // apply transition with (1..n) arguments
+        })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1));
+    };
+
+    return innerEquiv;
+
+}();
+
+/**
+ * jsDump
+ * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
+ * Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
+ * Date: 5/15/2008
+ * @projectDescription Advanced and extensible data dumping for Javascript.
+ * @version 1.0.0
+ * @author Ariel Flesler
+ * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
+ */
+QUnit.jsDump = (function() {
+	function quote( str ) {
+		return '"' + str.toString().replace(/"/g, '\\"') + '"';
+	};
+	function literal( o ) {
+		return o + '';
+	};
+	function join( pre, arr, post ) {
+		var s = jsDump.separator(),
+			base = jsDump.indent(),
+			inner = jsDump.indent(1);
+		if ( arr.join )
+			arr = arr.join( ',' + s + inner );
+		if ( !arr )
+			return pre + post;
+		return [ pre, inner + arr, base + post ].join(s);
+	};
+	function array( arr ) {
+		var i = arr.length,	ret = Array(i);
+		this.up();
+		while ( i-- )
+			ret[i] = this.parse( arr[i] );
+		this.down();
+		return join( '[', ret, ']' );
+	};
+
+	var reName = /^function (\w+)/;
+
+	var jsDump = {
+		parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
+			var	parser = this.parsers[ type || this.typeOf(obj) ];
+			type = typeof parser;
+
+			return type == 'function' ? parser.call( this, obj ) :
+				   type == 'string' ? parser :
+				   this.parsers.error;
+		},
+		typeOf:function( obj ) {
+			var type;
+			if ( obj === null ) {
+				type = "null";
+			} else if (typeof obj === "undefined") {
+				type = "undefined";
+			} else if (QUnit.is("RegExp", obj)) {
+				type = "regexp";
+			} else if (QUnit.is("Date", obj)) {
+				type = "date";
+			} else if (QUnit.is("Function", obj)) {
+				type = "function";
+			} else if (typeof obj.setInterval !== undefined && typeof obj.document !== "undefined" && typeof obj.nodeType === "undefined") {
+				type = "window";
+			} else if (obj.nodeType === 9) {
+				type = "document";
+			} else if (obj.nodeType) {
+				type = "node";
+			} else if (typeof obj === "object" && typeof obj.length === "number" && obj.length >= 0) {
+				type = "array";
+			} else {
+				type = typeof obj;
+			}
+			return type;
+		},
+		separator:function() {
+			return this.multiline ?	this.HTML ? '<br />' : '\n' : this.HTML ? '&nbsp;' : ' ';
+		},
+		indent:function( extra ) {// extra can be a number, shortcut for increasing-calling-decreasing
+			if ( !this.multiline )
+				return '';
+			var chr = this.indentChar;
+			if ( this.HTML )
+				chr = chr.replace(/\t/g,'   ').replace(/ /g,'&nbsp;');
+			return Array( this._depth_ + (extra||0) ).join(chr);
+		},
+		up:function( a ) {
+			this._depth_ += a || 1;
+		},
+		down:function( a ) {
+			this._depth_ -= a || 1;
+		},
+		setParser:function( name, parser ) {
+			this.parsers[name] = parser;
+		},
+		// The next 3 are exposed so you can use them
+		quote:quote,
+		literal:literal,
+		join:join,
+		//
+		_depth_: 1,
+		// This is the list of parsers, to modify them, use jsDump.setParser
+		parsers:{
+			window: '[Window]',
+			document: '[Document]',
+			error:'[ERROR]', //when no parser is found, shouldn't happen
+			unknown: '[Unknown]',
+			'null':'null',
+			undefined:'undefined',
+			'function':function( fn ) {
+				var ret = 'function',
+					name = 'name' in fn ? fn.name : (reName.exec(fn)||[])[1];//functions never have name in IE
+				if ( name )
+					ret += ' ' + name;
+				ret += '(';
+
+				ret = [ ret, QUnit.jsDump.parse( fn, 'functionArgs' ), '){'].join('');
+				return join( ret, QUnit.jsDump.parse(fn,'functionCode'), '}' );
+			},
+			array: array,
+			nodelist: array,
+			arguments: array,
+			object:function( map ) {
+				var ret = [ ];
+				QUnit.jsDump.up();
+				for ( var key in map )
+					ret.push( QUnit.jsDump.parse(key,'key') + ': ' + QUnit.jsDump.parse(map[key]) );
+				QUnit.jsDump.down();
+				return join( '{', ret, '}' );
+			},
+			node:function( node ) {
+				var open = QUnit.jsDump.HTML ? '&lt;' : '<',
+					close = QUnit.jsDump.HTML ? '&gt;' : '>';
+
+				var tag = node.nodeName.toLowerCase(),
+					ret = open + tag;
+
+				for ( var a in QUnit.jsDump.DOMAttrs ) {
+					var val = node[QUnit.jsDump.DOMAttrs[a]];
+					if ( val )
+						ret += ' ' + a + '=' + QUnit.jsDump.parse( val, 'attribute' );
+				}
+				return ret + close + open + '/' + tag + close;
+			},
+			functionArgs:function( fn ) {//function calls it internally, it's the arguments part of the function
+				var l = fn.length;
+				if ( !l ) return '';
+
+				var args = Array(l);
+				while ( l-- )
+					args[l] = String.fromCharCode(97+l);//97 is 'a'
+				return ' ' + args.join(', ') + ' ';
+			},
+			key:quote, //object calls it internally, the key part of an item in a map
+			functionCode:'[code]', //function calls it internally, it's the content of the function
+			attribute:quote, //node calls it internally, it's an html attribute value
+			string:quote,
+			date:quote,
+			regexp:literal, //regex
+			number:literal,
+			'boolean':literal
+		},
+		DOMAttrs:{//attributes to dump from nodes, name=>realName
+			id:'id',
+			name:'name',
+			'class':'className'
+		},
+		HTML:false,//if true, entities are escaped ( <, >, \t, space and \n )
+		indentChar:'  ',//indentation unit
+		multiline:true //if true, items in a collection, are separated by a \n, else just a space.
+	};
+
+	return jsDump;
+})();
+
+// from Sizzle.js
+function getText( elems ) {
+	var ret = "", elem;
+
+	for ( var i = 0; elems[i]; i++ ) {
+		elem = elems[i];
+
+		// Get the text from text nodes and CDATA nodes
+		if ( elem.nodeType === 3 || elem.nodeType === 4 ) {
+			ret += elem.nodeValue;
+
+		// Traverse everything else, except comment nodes
+		} else if ( elem.nodeType !== 8 ) {
+			ret += getText( elem.childNodes );
+		}
+	}
+
+	return ret;
+};
+
+/*
+ * Javascript Diff Algorithm
+ *  By John Resig (http://ejohn.org/)
+ *  Modified by Chu Alan "sprite"
+ *
+ * Released under the MIT license.
+ *
+ * More Info:
+ *  http://ejohn.org/projects/javascript-diff-algorithm/
+ *
+ * Usage: QUnit.diff(expected, actual)
+ *
+ * QUnit.diff("the quick brown fox jumped over", "the quick fox jumps over") == "the  quick <del>brown </del> fox <del>jumped </del><ins>jumps </ins> over"
+ */
+QUnit.diff = (function() {
+	function diff(o, n){
+		var ns = new Object();
+		var os = new Object();
+
+		for (var i = 0; i < n.length; i++) {
+			if (ns[n[i]] == null)
+				ns[n[i]] = {
+					rows: new Array(),
+					o: null
+				};
+			ns[n[i]].rows.push(i);
+		}
+
+		for (var i = 0; i < o.length; i++) {
+			if (os[o[i]] == null)
+				os[o[i]] = {
+					rows: new Array(),
+					n: null
+				};
+			os[o[i]].rows.push(i);
+		}
+
+		for (var i in ns) {
+			if (ns[i].rows.length == 1 && typeof(os[i]) != "undefined" && os[i].rows.length == 1) {
+				n[ns[i].rows[0]] = {
+					text: n[ns[i].rows[0]],
+					row: os[i].rows[0]
+				};
+				o[os[i].rows[0]] = {
+					text: o[os[i].rows[0]],
+					row: ns[i].rows[0]
+				};
+			}
+		}
+
+		for (var i = 0; i < n.length - 1; i++) {
+			if (n[i].text != null && n[i + 1].text == null && n[i].row + 1 < o.length && o[n[i].row + 1].text == null &&
+			n[i + 1] == o[n[i].row + 1]) {
+				n[i + 1] = {
+					text: n[i + 1],
+					row: n[i].row + 1
+				};
+				o[n[i].row + 1] = {
+					text: o[n[i].row + 1],
+					row: i + 1
+				};
+			}
+		}
+
+		for (var i = n.length - 1; i > 0; i--) {
+			if (n[i].text != null && n[i - 1].text == null && n[i].row > 0 && o[n[i].row - 1].text == null &&
+			n[i - 1] == o[n[i].row - 1]) {
+				n[i - 1] = {
+					text: n[i - 1],
+					row: n[i].row - 1
+				};
+				o[n[i].row - 1] = {
+					text: o[n[i].row - 1],
+					row: i - 1
+				};
+			}
+		}
+
+		return {
+			o: o,
+			n: n
+		};
+	}
+
+	return function(o, n){
+		o = o.replace(/\s+$/, '');
+		n = n.replace(/\s+$/, '');
+		var out = diff(o == "" ? [] : o.split(/\s+/), n == "" ? [] : n.split(/\s+/));
+
+		var str = "";
+
+		var oSpace = o.match(/\s+/g);
+		if (oSpace == null) {
+			oSpace = [" "];
+		}
+		else {
+			oSpace.push(" ");
+		}
+		var nSpace = n.match(/\s+/g);
+		if (nSpace == null) {
+			nSpace = [" "];
+		}
+		else {
+			nSpace.push(" ");
+		}
+
+		if (out.n.length == 0) {
+			for (var i = 0; i < out.o.length; i++) {
+				str += '<del>' + out.o[i] + oSpace[i] + "</del>";
+			}
+		}
+		else {
+			if (out.n[0].text == null) {
+				for (n = 0; n < out.o.length && out.o[n].text == null; n++) {
+					str += '<del>' + out.o[n] + oSpace[n] + "</del>";
+				}
+			}
+
+			for (var i = 0; i < out.n.length; i++) {
+				if (out.n[i].text == null) {
+					str += '<ins>' + out.n[i] + nSpace[i] + "</ins>";
+				}
+				else {
+					var pre = "";
+
+					for (n = out.n[i].row + 1; n < out.o.length && out.o[n].text == null; n++) {
+						pre += '<del>' + out.o[n] + oSpace[n] + "</del>";
+					}
+					str += " " + out.n[i].text + nSpace[i] + pre;
+				}
+			}
+		}
+
+		return str;
+	};
+})();
+
 })(this);
\ No newline at end of file

From d71f4808c19f8c2331c4e52da573f97715845b5f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 20 Mar 2011 19:05:03 -0400
Subject: [PATCH 279/533] Issue #137. Docs for memoize.

---
 index.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 1cf3c4151..f3e6a30b7 100644
--- a/index.html
+++ b/index.html
@@ -676,7 +676,9 @@ jQuery('#underscore_button').bind('click', buttonView.onClick);
         Memoizes a given <b>function</b> by caching the computed result. Useful
         for speeding up slow-running computations. If passed an optional 
         <b>hashFunction</b>, it will be used to compute the hash key for storing
-        the result, based on the arguments to the original function.
+        the result, based on the arguments to the original function. The default
+        <b>hashFunction</b> just uses the first argument to the memoized function
+        as the key.
       </p>
       <pre>
 var fibonacci = function(n) {

From dfaf6a3c650ebd8a5d50548c8ba3686a61297dae Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 20 Mar 2011 19:06:56 -0400
Subject: [PATCH 280/533] s/Packed/Minified. Issue #136

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index f3e6a30b7..83386bb5e 100644
--- a/index.html
+++ b/index.html
@@ -123,7 +123,7 @@
       </tr>
       <tr>
         <td><a href="underscore-min.js">Production Version (1.1.4)</a></td>
-        <td><i>3kb, Packed and Gzipped</i></td>
+        <td><i>3kb, Minified and Gzipped</i></td>
       </tr>
     </table>
 

From 39119065dc942680cf7f3b972ebc28aeaf3daf29 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 20 Mar 2011 19:32:20 -0400
Subject: [PATCH 281/533] Adding _.once ... Issue #121

---
 test/functions.js | 13 ++++++-------
 underscore.js     | 20 ++++++++++----------
 2 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index b37fc8976..83c69d730 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -107,14 +107,13 @@ $(document).ready(function() {
     setTimeout(debouncedIncr, 150);
     _.delay(function(){ ok(counter == 1, "incr was debounced"); start(); }, 220);
   });
-  
+
   test("functions: once", function() {
-    var addBang = function(str) { return str + "!"; };
-    hi = "Hi";
-    hi2 = _.once(addBang, hi);
-    hi3 = _.once(addBang, hi);
-    equals(hi2, "Hi!");
-    equals(hi3, undefined);
+    var num = 0;
+    var increment = _.once(function(){ num++; });
+    increment();
+    increment();
+    equals(num, 1);
   });
 
   test("functions: wrap", function() {
diff --git a/underscore.js b/underscore.js
index cfe7cea44..e214dbd51 100644
--- a/underscore.js
+++ b/underscore.js
@@ -474,17 +474,17 @@
   _.debounce = function(func, wait) {
     return limit(func, wait, true);
   };
-  
-  // Runs a function only if it's never been run before.
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
   _.once = function(func) {
-    if (_.indexOf(onceRunFunctions, func)) {
-      onceRunFunctions.push(func);
-      return func.apply(func, slice.call(arguments, 1));
-    }
-  }
-  
-  // Internal record of functions that have been run via `_.once`.
-  var onceRunFunctions = [];
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      return memo = func.apply(this, arguments);
+    };
+  };
 
   // Returns the first function passed as an argument to the second,
   // allowing you to adjust arguments, run code before and after, and

From 065dcbb27ba35e56f6d32529aacd4772468f178c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 20 Mar 2011 20:02:52 -0400
Subject: [PATCH 282/533] Documenting _.once

---
 index.html | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 83386bb5e..1d87bdd13 100644
--- a/index.html
+++ b/index.html
@@ -160,7 +160,7 @@
       <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, 
       <a href="#memoize">memoize</a>, <a href="#delay">delay</a>, <a href="#defer">defer</a>, 
       <a href="#throttle">throttle</a>, <a href="#debounce">debounce</a>, 
-      <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
+      <a href="#once">once</a>, <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
     </p>
 
     <p>
@@ -738,6 +738,21 @@ $(window).scroll(throttled);
       <pre>
 var lazyLayout = _.debounce(calculateLayout, 300);
 $(window).resize(lazyLayout);
+</pre>
+
+      <p id="once">
+        <b class="header">once</b><code>_.once(function)</code>
+        <br />
+        Creates a version of the function that can only be called one time. 
+        Repeated calls to the modified function will have no effect, returning
+        the value from the original call. Useful for initialization functions,
+        instead of having to set a boolean flag and then check it later.
+      </p>
+      <pre>
+var initialize = _.once(createApplication);
+initialize();
+initialize();
+// Application is only created once.
 </pre>
 
       <p id="wrap">

From c5ba70254280eb5656e26607ebf5b6bd8c54047d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 20 Mar 2011 20:20:08 -0400
Subject: [PATCH 283/533] Underscore.js 1.1.5

---
 .npmignore           |   4 ++
 docs/docco.css       |   2 +-
 docs/underscore.html | 141 ++++++++++++++++++++++++-------------------
 index.html           |  21 +++++--
 package.json         |   8 +--
 underscore-min.js    |  39 ++++++------
 underscore.js        |   4 +-
 7 files changed, 128 insertions(+), 91 deletions(-)
 create mode 100644 .npmignore

diff --git a/.npmignore b/.npmignore
new file mode 100644
index 000000000..f5717584f
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,4 @@
+test/
+underscore-min.js
+Rakefile
+docs/
\ No newline at end of file
diff --git a/docs/docco.css b/docs/docco.css
index 5aa0a8d73..20f2753d4 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -115,7 +115,7 @@ table td {
   }
     pre, tt, code {
       font-size: 12px; line-height: 18px;
-      font-family: Monaco, Consolas, "Lucida Console", monospace;
+      font-family: Menlo, Monaco, Consolas, "Lucida Console", monospace;
       margin: 0; padding: 0;
     }
 
diff --git a/docs/underscore.html b/docs/underscore.html
index cbce926c5..4fd55a0ba 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,11 +1,11 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.4
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.5
 (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
-</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets returned to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="p">{};</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>            <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
+</code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets returned to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="p">{};</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">FuncProto</span> <span class="o">=</span> <span class="nb">Function</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>            <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
       <span class="nx">unshift</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
       <span class="nx">toString</span>         <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
       <span class="nx">hasOwnProperty</span>   <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
@@ -20,17 +20,17 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeIndexOf</span>      <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">,</span>
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
-    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>, with backwards-compatibility
+    <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">,</span>
+    <span class="nx">nativeBind</span>         <span class="o">=</span> <span class="nx">FuncProto</span><span class="p">.</span><span class="nx">bind</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>, with backwards-compatibility
 for the old <code>require()</code> API. If we're not in CommonJS, add <code>_</code> to the
 global object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">module</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.4&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.5&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">value</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -191,12 +191,12 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
 with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">n</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
+    <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
 check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span><span class="p">(</span><span class="nx">index</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
@@ -239,12 +239,13 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if avai
 If the array is large and already in sort order, pass <code>true</code>
 for <strong>isSorted</strong> to use binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">l</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">);</span>
+      <span class="nx">i</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span> <span class="o">?</span> <span class="nx">i</span> <span class="o">:</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
-    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
@@ -255,24 +256,29 @@ for <strong>isSorted</strong> to use binary search.</p>             </td>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">args</span>  <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">),</span>
-        <span class="nx">solo</span>  <span class="o">=</span> <span class="nx">args</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">,</span>
-        <span class="nx">start</span> <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
-        <span class="nx">stop</span>  <span class="o">=</span> <span class="nx">solo</span> <span class="o">?</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">:</span> <span class="nx">args</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span>
-        <span class="nx">step</span>  <span class="o">=</span> <span class="nx">args</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">||</span> <span class="mi">1</span><span class="p">,</span>
-        <span class="nx">len</span>   <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">ceil</span><span class="p">((</span><span class="nx">stop</span> <span class="o">-</span> <span class="nx">start</span><span class="p">)</span> <span class="o">/</span> <span class="nx">step</span><span class="p">),</span> <span class="mi">0</span><span class="p">),</span>
-        <span class="nx">idx</span>   <span class="o">=</span> <span class="mi">0</span><span class="p">,</span>
-        <span class="nx">range</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">len</span><span class="p">);</span>
-    <span class="k">while</span> <span class="p">(</span><span class="nx">idx</span> <span class="o">&lt;</span> <span class="nx">len</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
+      <span class="nx">stop</span> <span class="o">=</span> <span class="nx">start</span> <span class="o">||</span> <span class="mi">0</span><span class="p">;</span>
+      <span class="nx">start</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
+    <span class="p">}</span>
+    <span class="nx">step</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">||</span> <span class="mi">1</span><span class="p">;</span>
+
+    <span class="kd">var</span> <span class="nx">len</span> <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">ceil</span><span class="p">((</span><span class="nx">stop</span> <span class="o">-</span> <span class="nx">start</span><span class="p">)</span> <span class="o">/</span> <span class="nx">step</span><span class="p">),</span> <span class="mi">0</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">idx</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">range</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">len</span><span class="p">);</span>
+
+    <span class="k">while</span><span class="p">(</span><span class="nx">idx</span> <span class="o">&lt;</span> <span class="nx">len</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">range</span><span class="p">[</span><span class="nx">idx</span><span class="o">++</span><span class="p">]</span> <span class="o">=</span> <span class="nx">start</span><span class="p">;</span>
       <span class="nx">start</span> <span class="o">+=</span> <span class="nx">step</span><span class="p">;</span>
     <span class="p">}</span>
+
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
-optionally). Binding with arguments is also known as <code>curry</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+optionally). Binding with arguments is also known as <code>curry</code>.
+Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeBind</span> <span class="o">&amp;&amp;</span> <span class="nx">func</span><span class="p">.</span><span class="nx">bind</span> <span class="o">===</span> <span class="nx">nativeBind</span><span class="p">)</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">bind</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span> <span class="o">||</span> <span class="p">{},</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
@@ -285,7 +291,7 @@ all callbacks defined on an object belong to it.</p>             </td>
     <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
-      <span class="k">return</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">memo</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
+      <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
@@ -312,14 +318,22 @@ during a given window of time.</p>             </td>             <td class="code
 be triggered. The function will be called after it stops being called for
 N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
+often you call it. Useful for lazy initialization.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">once</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">ran</span> <span class="o">=</span> <span class="kc">false</span><span class="p">,</span> <span class="nx">memo</span><span class="p">;</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">ran</span><span class="p">)</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
+      <span class="nx">ran</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+      <span class="k">return</span> <span class="nx">memo</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -329,90 +343,95 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
 that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -433,31 +452,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 1d87bdd13..55d90d816 100644
--- a/index.html
+++ b/index.html
@@ -118,11 +118,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.4)</a></td>
-        <td><i>27kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.1.5)</a></td>
+        <td><i>28kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.4)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.5)</a></td>
         <td><i>3kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -1223,7 +1223,20 @@ _([1, 2, 3]).value();
         Python's <a href="http://docs.python.org/library/itertools.html">itertools</a>.
       </p>
 
-      <h2>Change Log</h2>
+      <h2 id="changelog">Change Log</h2>
+      
+      <p>
+        <b class="header">1.1.5</b> &mdash; <small><i>Mar 20, 2011</i></small><br />
+        Added an <tt>_.defaults</tt> function, for use merging together JS objects
+        representing default options.
+        Added an <tt>_.once</tt> function, for manufacturing functions that should
+        only ever execute a single time.
+        <tt>_.bind</tt> now delegates to the native ECMAScript 5 version, 
+        where available.
+        <tt>_.keys</tt> now throws an error when used on non-Object values, as in
+        ECMAScript 5.
+        Fixed a bug with <tt>_.keys</tt> when used over sparse arrays.
+      </p>
       
       <p>
         <b class="header">1.1.4</b> &mdash; <small><i>Jan 9, 2011</i></small><br />
diff --git a/package.json b/package.json
index d5c924d0b..f82099236 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,12 @@
 {
   "name"          : "underscore",
-  "description"   : "Functional programming aid for JavaScript. Works well with jQuery.",
-  "url"           : "http://documentcloud.github.com/underscore/",
+  "description"   : "JavaScript's functional programming helper library.",
+  "homepage"      : "http://documentcloud.github.com/underscore/",
   "keywords"      : ["util", "functional", "server", "client", "browser"],
   "author"        : "Jeremy Ashkenas <jeremy@documentcloud.org>",
   "contributors"  : [],
   "dependencies"  : [],
-  "lib"           : ".",
+  "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.1.4"
+  "version"       : "1.1.5"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 9ac21fa26..3de58cdff 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,25 +1,26 @@
-// Underscore.js 1.1.4
+// Underscore.js 1.1.5
 // (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
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+d=c.keys(a);var e=c.keys(b);if(d.length!=e.length)return false;for(var f in a)if(!(f in b)||!c.isEqual(a[f],b[f]))return false;return true};c.isEmpty=function(a){if(c.isArray(a)||c.isString(a))return a.length===0;for(var b in a)if(m.call(a,b))return false;return true};c.isElement=function(a){return!!(a&&a.nodeType==1)};c.isArray=o||function(a){return F.call(a)==="[object Array]"};c.isArguments=function(a){return!!(a&&m.call(a,"callee"))};c.isFunction=function(a){return!!(a&&a.constructor&&a.call&&
+a.apply)};c.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};c.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};c.isNaN=function(a){return a!==a};c.isBoolean=function(a){return a===true||a===false};c.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};c.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};c.isNull=function(a){return a===null};c.isUndefined=function(a){return a===void 0};c.noConflict=function(){q._=
+D;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.mixin=function(a){j(c.functions(a),function(b){I(b,c[b]=a[b])})};var J=0;c.uniqueId=function(a){var b=J++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,
+function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var r=function(a,b){return b?c(a).chain():a},I=function(a,b){l.prototype[a]=function(){var d=i.call(arguments);E.call(d,this._wrapped);return r(b.apply(c,
+d),this._chain)}};c.mixin(c);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=k[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];l.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index e214dbd51..c627740a0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.1.4
+//     Underscore.js 1.1.5
 //     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -59,7 +59,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.1.4';
+  _.VERSION = '1.1.5';
 
   // Collection Functions
   // --------------------

From 2498bccb500f34b7549e52fb268177d6794d9b60 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 22 Mar 2011 10:44:07 -0400
Subject: [PATCH 284/533] changing order of operations to force an errror when
 _.bind -ing null or undefined values.

---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index c627740a0..00f6c26f5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -408,8 +408,9 @@
   // Create a function bound to a given object (assigning `this`, and arguments,
   // optionally). Binding with arguments is also known as `curry`.
   // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
+  // We check for `func.bind` first, to fail fast when `func` is undefined.
   _.bind = function(func, obj) {
-    if (nativeBind && func.bind === nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
+    if (func.bind === nativeBind && nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
     var args = slice.call(arguments, 2);
     return function() {
       return func.apply(obj, args.concat(slice.call(arguments)));

From 6d4b76705d656009e814823aca3f681ca0a56d6f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 22 Mar 2011 15:48:09 -0400
Subject: [PATCH 285/533] we're reserving nativeBind ... we should be actually
 using it.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 00f6c26f5..259a4f310 100644
--- a/underscore.js
+++ b/underscore.js
@@ -410,7 +410,7 @@
   // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
   // We check for `func.bind` first, to fail fast when `func` is undefined.
   _.bind = function(func, obj) {
-    if (func.bind === nativeBind && nativeBind) return func.bind.apply(func, slice.call(arguments, 1));
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
     var args = slice.call(arguments, 2);
     return function() {
       return func.apply(obj, args.concat(slice.call(arguments)));

From a9ac8b11f8ba1193a08d166695d151b595423a00 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 25 Mar 2011 09:46:28 -0400
Subject: [PATCH 286/533] Documenting zip as transpose. Issue #161

---
 index.html | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.html b/index.html
index 55d90d816..215d06a6a 100644
--- a/index.html
+++ b/index.html
@@ -578,6 +578,8 @@ _.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
         Merges together the values of each of the <b>arrays</b> with the
         values at the corresponding position. Useful when you have separate
         data sources that are coordinated through matching array indexes.
+        If you're working with a matrix of nested arrays, <b>zip.apply</b>
+        can transpose the matrix in a similar fashion.
       </p>
       <pre>
 _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);

From de50fc460760efa34bccb74b2c8a65005e567fd2 Mon Sep 17 00:00:00 2001
From: Aseem Kishore <aseem.kishore@gmail.com>
Date: Fri, 25 Mar 2011 12:06:10 -0700
Subject: [PATCH 287/533] Add test case for invoke w/ function reference.

---
 test/collections.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/collections.js b/test/collections.js
index 442b205f1..69b98c2ac 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -154,6 +154,13 @@ $(document).ready(function() {
     equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
   });
 
+  test('collections: invoke w/ function reference', function() {
+    var list = [[5, 1, 7], [3, 2, 1]];
+    var result = _.invoke(list, Array.prototype.sort);
+    equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
+    equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
+  });
+
   test('collections: pluck', function() {
     var people = [{name : 'moe', age : 30}, {name : 'curly', age : 50}];
     equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'pulls names out of objects');

From 3f512c2495c7d47e588d224771433770c54d9952 Mon Sep 17 00:00:00 2001
From: aseemk <aseem.kishore@gmail.com>
Date: Fri, 25 Mar 2011 12:35:11 -0700
Subject: [PATCH 288/533] Add support for _.invoke() to take function
 reference.

---
 underscore-min.js | 38 +++++++++++++++++++-------------------
 underscore.js     |  2 +-
 2 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/underscore-min.js b/underscore-min.js
index 3de58cdff..6fb7a6b64 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -5,22 +5,22 @@
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 // For all details and documentation:
 // http://documentcloud.github.com/underscore
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+0,k=a.length;e<k;e++){if(c.call(d,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(d,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);g(a,function(a,h,G){e[e.length]=c.call(b,a,h,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);g(a,function(a,b,f){!k&&b===0?(d=a,k=!0):d=c.call(e,d,a,b,f)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
+return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,h,f){if(c.call(b,a,h,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);g(a,function(a,h,f){c.call(b,a,h,f)&&(e[e.length]=a)});return e};
+b.reject=function(a,c,b){var e=[];if(a==null)return e;g(a,function(a,h,f){c.call(b,a,h,f)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,d){c=c||b.identity;var e=!0;if(a==null)return e;if(x&&a.every===x)return a.every(c,d);g(a,function(a,b,f){if(!(e=e&&c.call(d,a,b,f)))return m});return e};var A=b.some=b.any=function(a,c,d){c=c||b.identity;var e=!1;if(a==null)return e;if(y&&a.some===y)return a.some(c,d);g(a,function(a,b,f){if(e=c.call(d,a,b,f))return m});return e};b.include=b.contains=function(a,
+c){var b=!1;if(a==null)return b;if(o&&a.indexOf===o)return a.indexOf(c)!=-1;A(a,function(a){if(b=a===c)return!0});return b};b.invoke=function(a,c){var d=f.call(arguments,2);return b.map(a,function(a){return(typeof c==="string"?a[c]:c||a).apply(a,d)})};b.pluck=function(a,c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};g(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};
+b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};g(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b<e.computed&&(e={value:a,computed:b})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(a,b,f){return{value:a,criteria:c.call(d,a,b,f)}}).sort(function(a,b){var c=a.criteria,d=b.criteria;return c<d?-1:c>d?1:0}),"value")};b.sortedIndex=function(a,c,d){d=d||b.identity;for(var e=0,f=a.length;e<f;){var h=e+f>>1;d(a[h])<d(c)?e=h+1:f=h}return e};
+b.toArray=function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return f.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=b.head=function(a,b,d){return b!=null&&!d?f.call(a,0,b):a[0]};b.rest=b.tail=function(a,b,d){return f.call(a,b==null||d?1:b)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.filter(a,function(a){return!!a})};b.flatten=function(a){return b.reduce(a,function(a,d){if(b.isArray(d))return a.concat(b.flatten(d));
+a[a.length]=d;return a},[])};b.without=function(a){var c=f.call(arguments,1);return b.filter(a,function(a){return!b.include(c,a)})};b.uniq=b.unique=function(a,c){return b.reduce(a,function(a,e,f){if(0==f||(c===!0?b.last(a)!=e:!b.include(a,e)))a[a.length]=e;return a},[])};b.intersect=function(a){var c=f.call(arguments,1);return b.filter(b.uniq(a),function(a){return b.every(c,function(c){return b.indexOf(c,a)>=0})})};b.zip=function(){for(var a=f.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),
+e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c,d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(o&&a.indexOf===o)return a.indexOf(c);d=0;for(e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);d=arguments[2]||1;for(var e=Math.max(Math.ceil((b-a)/
+d),0),f=0,h=Array(e);f<e;)h[f++]=a,a+=d;return h};b.bind=function(a,b){if(a.bind===q&&q)return q.apply(a,f.call(arguments,1));var d=f.call(arguments,2);return function(){return a.apply(b,d.concat(f.call(arguments)))}};b.bindAll=function(a){var c=f.call(arguments,1);c.length==0&&(c=b.functions(a));g(c,function(c){a[c]=b.bind(a[c],a)});return a};b.memoize=function(a,c){var d={};c=c||b.identity;return function(){var b=c.apply(this,arguments);return l.call(d,b)?d[b]:d[b]=a.apply(this,arguments)}};b.delay=
+function(a,b){var d=f.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(f.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,h=arguments,g=function(){e=null;a.apply(f,h)};d&&clearTimeout(e);if(d||!e)e=setTimeout(g,b)}};b.throttle=function(a,b){return B(a,b,!1)};b.debounce=function(a,b){return B(a,b,!0)};b.once=function(a){var b=!1,d;return function(){if(b)return d;b=!0;return d=a.apply(this,arguments)}};
+b.wrap=function(a,b){return function(){var d=[a].concat(f.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=f.call(arguments);return function(){for(var b=f.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.keys=F||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)l.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};
+b.extend=function(a){g(f.call(arguments,1),function(b){for(var d in b)a[d]=b[d]});return a};b.defaults=function(a){g(f.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,c){if(a===c)return!0;var d=typeof a;if(d!=typeof c)return!1;if(a==c)return!0;if(!a&&c||a&&!c)return!1;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual)return a.isEqual(c);
+if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return!1;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return!1;if(a.length&&a.length!==c.length)return!1;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return!1;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return!1;return!0};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;
+for(var c in a)if(l.call(a,c))return!1;return!0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=n||function(a){return E.call(a)==="[object Array]"};b.isArguments=function(a){return!(!a||!l.call(a,"callee"))};b.isFunction=function(a){return!(!a||!a.constructor||!a.call||!a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===
+!0||a===!1};b.isDate=function(a){return!(!a||!a.getTimezoneOffset||!a.setUTCFullYear)};b.isRegExp=function(a){return!(!a||!a.test||!a.exec||!(a.ignoreCase||a.ignoreCase===!1))};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){p._=C;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.mixin=function(a){g(b.functions(a),function(c){H(c,b[c]=a[c])})};var I=0;b.uniqueId=function(a){var b=I++;
+return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,
+"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};var j=function(a){this._wrapped=a};b.prototype=j.prototype;var r=function(a,c){return c?b(a).chain():a},H=function(a,c){j.prototype[a]=function(){var a=f.call(arguments);D.call(a,this._wrapped);return r(c.apply(b,a),this._chain)}};b.mixin(b);g(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=i[a];j.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,
+this._chain)}});g(["concat","join","slice"],function(a){var b=i[a];j.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});j.prototype.chain=function(){this._chain=!0;return this};j.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 259a4f310..600a5c682 100644
--- a/underscore.js
+++ b/underscore.js
@@ -208,7 +208,7 @@
   _.invoke = function(obj, method) {
     var args = slice.call(arguments, 2);
     return _.map(obj, function(value) {
-      return (method ? value[method] : value).apply(value, args);
+      return (typeof method === "string" ? value[method] : method || value).apply(value, args);
     });
   };
 

From c8e3c04076c2e5310c31db0810977f517a39ee6b Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Tue, 5 Apr 2011 18:09:47 -0400
Subject: [PATCH 289/533] Adding _.count to count truthy values in an iterator.
  _.count([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; }) = 3

---
 index.html          | 23 +++++++++++++++++------
 test/collections.js |  7 +++++++
 underscore.js       | 10 ++++++++++
 3 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/index.html b/index.html
index 215d06a6a..a7d9c5284 100644
--- a/index.html
+++ b/index.html
@@ -137,12 +137,13 @@
       <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>,
       <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>,
       <a href="#detect">detect</a>, <a href="#select">select</a>,
-      <a href="#reject">reject</a>, <a href="#all">all</a>,
-      <a href="#any">any</a>, <a href="#include">include</a>,
-      <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
-      <a href="#max">max</a>, <a href="#min">min</a>,
-      <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>,
-      <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
+      <a href="#reject">reject</a>, <a href="#count">count</a>,
+      <a href="#all">all</a>, <a href="#any">any</a>, 
+      <a href="#include">include</a>, <a href="#invoke">invoke</a>, 
+      <a href="#pluck">pluck</a>, <a href="#max">max</a>, 
+      <a href="#min">min</a>, <a href="#sortBy">sortBy</a>, 
+      <a href="#sortedIndex">sortedIndex</a>, <a href="#toArray">toArray</a>, 
+      <a href="#size">size</a></span>
     </p>
 
     <p>
@@ -337,6 +338,16 @@ var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
       <pre>
 var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 =&gt; [1, 3, 5]
+</pre>
+
+      <p id="count">
+        <b class="header">count</b><code>_.count(list, [iterator], [context])</code>
+        <br />
+        Returns a count of elements which pass the truth test (<b>iterator</b>).
+      </p>
+      <pre>
+var count = _.count([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+=&gt; 3
 </pre>
 
       <p id="all">
diff --git a/test/collections.js b/test/collections.js
index 442b205f1..b14821a9d 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -122,6 +122,13 @@ $(document).ready(function() {
     equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
   });
 
+  test('collections: count', function() {
+    var count = _.count([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+    equals(count, 3, 'counted even numbers');
+    var count = _.count([0, 1, 2, 3, 4, 5, 6]);
+    equals(count, 6, 'counted all truthy numbers');
+  });
+
   test('collections: all', function() {
     ok(_.all([]), 'the empty set');
     ok(_.all([true, true, true]), 'all true values');
diff --git a/underscore.js b/underscore.js
index 259a4f310..313b16c1e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -164,6 +164,16 @@
     return results;
   };
 
+  // Returns a count of elements which pass a truth test.
+  _.count = function(obj, iterator, context) {
+    var count = 0;
+    iterator = iterator || _.identity;
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) count += 1;
+    });
+    return count;
+  };
+  
   // Determine whether all of the elements match a truth test.
   // Delegates to **ECMAScript 5**'s native `every` if available.
   // Aliased as `all`.

From 54575225822e7b68926d68b84b832c65690f76a4 Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Tue, 5 Apr 2011 18:11:20 -0400
Subject: [PATCH 290/533] Speeding up a few methods which assign a default
 identity function for missing/optional iterators. Noticeable difference.

---
 underscore.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index 313b16c1e..1630e213b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -167,7 +167,7 @@
   // Returns a count of elements which pass a truth test.
   _.count = function(obj, iterator, context) {
     var count = 0;
-    iterator = iterator || _.identity;
+    iterator || (iterator = _.identity);
     each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) count += 1;
     });
@@ -178,7 +178,7 @@
   // Delegates to **ECMAScript 5**'s native `every` if available.
   // Aliased as `all`.
   _.every = _.all = function(obj, iterator, context) {
-    iterator = iterator || _.identity;
+    iterator || (iterator = _.identity);
     var result = true;
     if (obj == null) return result;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
@@ -192,7 +192,7 @@
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
   var any = _.some = _.any = function(obj, iterator, context) {
-    iterator = iterator || _.identity;
+    iterator || (iterator = _.identity);
     var result = false;
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
@@ -265,7 +265,7 @@
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.
   _.sortedIndex = function(array, obj, iterator) {
-    iterator = iterator || _.identity;
+    iterator || (iterator = _.identity);
     var low = 0, high = array.length;
     while (low < high) {
       var mid = (low + high) >> 1;
@@ -439,7 +439,7 @@
   // Memoize an expensive function by storing its results.
   _.memoize = function(func, hasher) {
     var memo = {};
-    hasher = hasher || _.identity;
+    hasher || (hasher = _.identity);
     return function() {
       var key = hasher.apply(this, arguments);
       return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));

From 1fc7d4b04982b7afa221e3f5b2c81fc5547353a5 Mon Sep 17 00:00:00 2001
From: Samuel Clay <samuel@ofbrooklyn.com>
Date: Wed, 6 Apr 2011 09:03:40 -0400
Subject: [PATCH 291/533] Revert "Adding _.count to count truthy values in an
 iterator.  _.count([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; })
 = 3"

This reverts commit c8e3c04076c2e5310c31db0810977f517a39ee6b.

Conflicts:

	underscore.js
---
 index.html          | 23 ++++++-----------------
 test/collections.js |  7 -------
 underscore.js       | 10 ----------
 3 files changed, 6 insertions(+), 34 deletions(-)

diff --git a/index.html b/index.html
index a7d9c5284..215d06a6a 100644
--- a/index.html
+++ b/index.html
@@ -137,13 +137,12 @@
       <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>,
       <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>,
       <a href="#detect">detect</a>, <a href="#select">select</a>,
-      <a href="#reject">reject</a>, <a href="#count">count</a>,
-      <a href="#all">all</a>, <a href="#any">any</a>, 
-      <a href="#include">include</a>, <a href="#invoke">invoke</a>, 
-      <a href="#pluck">pluck</a>, <a href="#max">max</a>, 
-      <a href="#min">min</a>, <a href="#sortBy">sortBy</a>, 
-      <a href="#sortedIndex">sortedIndex</a>, <a href="#toArray">toArray</a>, 
-      <a href="#size">size</a></span>
+      <a href="#reject">reject</a>, <a href="#all">all</a>,
+      <a href="#any">any</a>, <a href="#include">include</a>,
+      <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
+      <a href="#max">max</a>, <a href="#min">min</a>,
+      <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>,
+      <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
 
     <p>
@@ -338,16 +337,6 @@ var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
       <pre>
 var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 =&gt; [1, 3, 5]
-</pre>
-
-      <p id="count">
-        <b class="header">count</b><code>_.count(list, [iterator], [context])</code>
-        <br />
-        Returns a count of elements which pass the truth test (<b>iterator</b>).
-      </p>
-      <pre>
-var count = _.count([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-=&gt; 3
 </pre>
 
       <p id="all">
diff --git a/test/collections.js b/test/collections.js
index b14821a9d..442b205f1 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -122,13 +122,6 @@ $(document).ready(function() {
     equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
   });
 
-  test('collections: count', function() {
-    var count = _.count([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-    equals(count, 3, 'counted even numbers');
-    var count = _.count([0, 1, 2, 3, 4, 5, 6]);
-    equals(count, 6, 'counted all truthy numbers');
-  });
-
   test('collections: all', function() {
     ok(_.all([]), 'the empty set');
     ok(_.all([true, true, true]), 'all true values');
diff --git a/underscore.js b/underscore.js
index 1630e213b..e142ec90c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -164,16 +164,6 @@
     return results;
   };
 
-  // Returns a count of elements which pass a truth test.
-  _.count = function(obj, iterator, context) {
-    var count = 0;
-    iterator || (iterator = _.identity);
-    each(obj, function(value, index, list) {
-      if (iterator.call(context, value, index, list)) count += 1;
-    });
-    return count;
-  };
-  
   // Determine whether all of the elements match a truth test.
   // Delegates to **ECMAScript 5**'s native `every` if available.
   // Aliased as `all`.

From 217a6a6a63103b35f2290134ff5bd3416a18b6e4 Mon Sep 17 00:00:00 2001
From: Sam Gentle <sgentle@gmail.com>
Date: Thu, 14 Apr 2011 07:19:05 +1000
Subject: [PATCH 292/533] _.barrier + tests

---
 docs/docco.css       |  2 +-
 docs/underscore.html | 93 +++++++++++++++++++++++---------------------
 test/functions.js    | 18 +++++++++
 underscore-min.js    | 38 +++++++++---------
 underscore.js        |  8 ++++
 5 files changed, 95 insertions(+), 64 deletions(-)

diff --git a/docs/docco.css b/docs/docco.css
index 20f2753d4..5aa0a8d73 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -115,7 +115,7 @@ table td {
   }
     pre, tt, code {
       font-size: 12px; line-height: 18px;
-      font-family: Menlo, Monaco, Consolas, "Lucida Console", monospace;
+      font-family: Monaco, Consolas, "Lucida Console", monospace;
       margin: 0; padding: 0;
     }
 
diff --git a/docs/underscore.html b/docs/underscore.html
index 4fd55a0ba..49620598f 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -110,7 +110,7 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -121,7 +121,7 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -173,7 +173,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">low</span> <span class="o">&lt;</span> <span class="nx">high</span><span class="p">)</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">mid</span> <span class="o">=</span> <span class="p">(</span><span class="nx">low</span> <span class="o">+</span> <span class="nx">high</span><span class="p">)</span> <span class="o">&gt;&gt;</span> <span class="mi">1</span><span class="p">;</span>
@@ -274,8 +274,9 @@ the native Python <code>range()</code> function. See
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeBind</span> <span class="o">&amp;&amp;</span> <span class="nx">func</span><span class="p">.</span><span class="nx">bind</span> <span class="o">===</span> <span class="nx">nativeBind</span><span class="p">)</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">bind</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.
+We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">bind</span> <span class="o">===</span> <span class="nx">nativeBind</span> <span class="o">&amp;&amp;</span> <span class="nx">nativeBind</span><span class="p">)</span> <span class="k">return</span> <span class="nx">nativeBind</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
@@ -288,7 +289,7 @@ all callbacks defined on an object belong to it.</p>             </td>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
-    <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
@@ -343,95 +344,99 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">barrier</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">times</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
 that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -452,31 +457,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/test/functions.js b/test/functions.js
index 83c69d730..77ad72b39 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -137,4 +137,22 @@ $(document).ready(function() {
     equals(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
   });
 
+  test("functions: barrier", function() {
+    var testBarrier = function(barrierAmount, timesCalled) {
+      var barrierCalled = 0;
+      var barrier = _.barrier(function(){ barrierCalled++; }, barrierAmount);
+
+
+      while (timesCalled--) {
+        barrier();
+      }
+
+      return barrierCalled;
+    }
+
+    equals(testBarrier(5, 5), 1, "barrier(N) should fire after being called N times");
+    equals(testBarrier(5, 4), 0, "barrier(N) should not fire unless called N times");
+    equals(testBarrier(5, 6), 1, "barrier(N) should fire only once even if called more than N times");
+  });
+
 });
diff --git a/underscore-min.js b/underscore-min.js
index 3de58cdff..de09889b3 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -5,22 +5,22 @@
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diff --git a/underscore.js b/underscore.js
index e142ec90c..a45ca8907 100644
--- a/underscore.js
+++ b/underscore.js
@@ -510,6 +510,14 @@
     };
   };
 
+  // Returns a function that will only be executed after being called N times.
+  _.barrier = function(func, times) {
+    return function() {
+      if (--times === 0) { return func.apply(this, arguments); }
+    };
+  };
+
+
   // Object Functions
   // ----------------
 

From 5e051fb0ed7c53fae4c4a0ffc7d4870059e2b928 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Apr 2011 16:09:44 -0400
Subject: [PATCH 293/533] from now on, to avoid confusion, underscore-min will
 only be in gh-pages.

---
 underscore-min.js | 26 --------------------------
 1 file changed, 26 deletions(-)
 delete mode 100644 underscore-min.js

diff --git a/underscore-min.js b/underscore-min.js
deleted file mode 100644
index 3de58cdff..000000000
--- a/underscore-min.js
+++ /dev/null
@@ -1,26 +0,0 @@
-// Underscore.js 1.1.5
-// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
-// Underscore is freely distributable under the MIT license.
-// Portions of Underscore are inspired or borrowed from Prototype,
-// Oliver Steele's Functional, and John Resig's Micro-Templating.
-// For all details and documentation:
-// http://documentcloud.github.com/underscore
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-function(e){return c.indexOf(e,d)>=0})})};c.zip=function(){for(var a=i.call(arguments),b=c.max(c.pluck(a,"length")),d=Array(b),e=0;e<b;e++)d[e]=c.pluck(a,""+e);return d};c.indexOf=function(a,b,d){if(a==null)return-1;var e;if(d){d=c.sortedIndex(a,b);return a[d]===b?d:-1}if(p&&a.indexOf===p)return a.indexOf(b);d=0;for(e=a.length;d<e;d++)if(a[d]===b)return d;return-1};c.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;
-return-1};c.range=function(a,b,d){if(arguments.length<=1){b=a||0;a=0}d=arguments[2]||1;for(var e=Math.max(Math.ceil((b-a)/d),0),f=0,g=Array(e);f<e;){g[f++]=a;a+=d}return g};c.bind=function(a,b){if(A&&a.bind===A)return a.bind.apply(a,i.call(arguments,1));var d=i.call(arguments,2);return function(){return a.apply(b,d.concat(i.call(arguments)))}};c.bindAll=function(a){var b=i.call(arguments,1);if(b.length==0)b=c.functions(a);j(b,function(d){a[d]=c.bind(a[d],a)});return a};c.memoize=function(a,b){var d=
-{};b=b||c.identity;return function(){var e=b.apply(this,arguments);return m.call(d,e)?d[e]:d[e]=a.apply(this,arguments)}};c.delay=function(a,b){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};c.defer=function(a){return c.delay.apply(c,[a,1].concat(i.call(arguments,1)))};var C=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};c.throttle=function(a,b){return C(a,b,false)};c.debounce=
-function(a,b){return C(a,b,true)};c.once=function(a){var b=false,d;return function(){if(b)return d;b=true;return d=a.apply(this,arguments)}};c.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments));return b.apply(this,d)}};c.compose=function(){var a=i.call(arguments);return function(){for(var b=i.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};c.keys=G||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)if(m.call(a,
-d))b[b.length]=d;return b};c.values=function(a){return c.map(a,c.identity)};c.functions=c.methods=function(a){return c.filter(c.keys(a),function(b){return c.isFunction(a[b])}).sort()};c.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)a[d]=b[d]});return a};c.defaults=function(a){j(i.call(arguments,1),function(b){for(var d in b)if(a[d]==null)a[d]=b[d]});return a};c.clone=function(a){return c.isArray(a)?a.slice():c.extend({},a)};c.tap=function(a,b){b(a);return a};c.isEqual=function(a,
-b){if(a===b)return true;var d=typeof a;if(d!=typeof b)return false;if(a==b)return true;if(!a&&b||a&&!b)return false;if(a._chain)a=a._wrapped;if(b._chain)b=b._wrapped;if(a.isEqual)return a.isEqual(b);if(c.isDate(a)&&c.isDate(b))return a.getTime()===b.getTime();if(c.isNaN(a)&&c.isNaN(b))return false;if(c.isRegExp(a)&&c.isRegExp(b))return a.source===b.source&&a.global===b.global&&a.ignoreCase===b.ignoreCase&&a.multiline===b.multiline;if(d!=="object")return false;if(a.length&&a.length!==b.length)return false;
-d=c.keys(a);var e=c.keys(b);if(d.length!=e.length)return false;for(var f in a)if(!(f in b)||!c.isEqual(a[f],b[f]))return false;return true};c.isEmpty=function(a){if(c.isArray(a)||c.isString(a))return a.length===0;for(var b in a)if(m.call(a,b))return false;return true};c.isElement=function(a){return!!(a&&a.nodeType==1)};c.isArray=o||function(a){return F.call(a)==="[object Array]"};c.isArguments=function(a){return!!(a&&m.call(a,"callee"))};c.isFunction=function(a){return!!(a&&a.constructor&&a.call&&
-a.apply)};c.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};c.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};c.isNaN=function(a){return a!==a};c.isBoolean=function(a){return a===true||a===false};c.isDate=function(a){return!!(a&&a.getTimezoneOffset&&a.setUTCFullYear)};c.isRegExp=function(a){return!!(a&&a.test&&a.exec&&(a.ignoreCase||a.ignoreCase===false))};c.isNull=function(a){return a===null};c.isUndefined=function(a){return a===void 0};c.noConflict=function(){q._=
-D;return this};c.identity=function(a){return a};c.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};c.mixin=function(a){j(c.functions(a),function(b){I(b,c[b]=a[b])})};var J=0;c.uniqueId=function(a){var b=J++;return a?a+b:b};c.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};c.template=function(a,b){var d=c.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,
-function(e,f){return"',"+f.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(e,f){return"');"+f.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return b?d(b):d};var l=function(a){this._wrapped=a};c.prototype=l.prototype;var r=function(a,b){return b?c(a).chain():a},I=function(a,b){l.prototype[a]=function(){var d=i.call(arguments);E.call(d,this._wrapped);return r(b.apply(c,
-d),this._chain)}};c.mixin(c);j(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=k[a];l.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];l.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});l.prototype.chain=function(){this._chain=true;return this};l.prototype.value=function(){return this._wrapped}})();

From 8f67aa3f183bcfa3e180cd6b8554aea76841acb3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Apr 2011 16:17:58 -0400
Subject: [PATCH 294/533] _.barrier -> _.after, switch the order of arguments
 ... fix test formatting.

---
 test/functions.js | 29 +++++++++++++----------------
 underscore.js     |  2 +-
 2 files changed, 14 insertions(+), 17 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 77ad72b39..c3eb99fe4 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -21,7 +21,7 @@ $(document).ready(function() {
     var func = _.bind(func, this, 'curly');
     equals(func(), 'hello: curly', 'the function was completely applied in advance');
 
-    var func = function(salutation, firstname, lastname) { return salutation + ': ' + firstname + ' ' + lastname };
+    var func = function(salutation, firstname, lastname) { return salutation + ': ' + firstname + ' ' + lastname; };
     func = _.bind(func, this, 'hello', 'moe', 'curly');
     equals(func(), 'hello: moe curly', 'the function was partially applied in advance and can accept multiple arguments');
 
@@ -137,22 +137,19 @@ $(document).ready(function() {
     equals(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
   });
 
-  test("functions: barrier", function() {
-    var testBarrier = function(barrierAmount, timesCalled) {
-      var barrierCalled = 0;
-      var barrier = _.barrier(function(){ barrierCalled++; }, barrierAmount);
+  test("functions: after", function() {
+    var testAfter = function(afterAmount, timesCalled) {
+      var afterCalled = 0;
+      var after = _.after(afterAmount, function() {
+        afterCalled++;
+      });
+      while (timesCalled--) after();
+      return afterCalled;
+    };
 
-
-      while (timesCalled--) {
-        barrier();
-      }
-
-      return barrierCalled;
-    }
-
-    equals(testBarrier(5, 5), 1, "barrier(N) should fire after being called N times");
-    equals(testBarrier(5, 4), 0, "barrier(N) should not fire unless called N times");
-    equals(testBarrier(5, 6), 1, "barrier(N) should fire only once even if called more than N times");
+    equals(testAfter(5, 5), 1, "after(N) should fire after being called N times");
+    equals(testAfter(5, 4), 0, "after(N) should not fire unless called N times");
+    equals(testAfter(5, 6), 1, "after(N) should fire only once even if called more than N times");
   });
 
 });
diff --git a/underscore.js b/underscore.js
index a45ca8907..d18d72030 100644
--- a/underscore.js
+++ b/underscore.js
@@ -511,7 +511,7 @@
   };
 
   // Returns a function that will only be executed after being called N times.
-  _.barrier = function(func, times) {
+  _.after = function(times, func) {
     return function() {
       if (--times === 0) { return func.apply(this, arguments); }
     };

From bf214d2c8dfcf252e358eec4f47c68af431a7e23 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Apr 2011 17:17:54 -0400
Subject: [PATCH 295/533] stricter ECMA5 compliance. _.every now requires an
 iterator to be passed. #160

---
 test/collections.js | 8 ++++----
 underscore.js       | 1 -
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 69b98c2ac..ff365f8ea 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -123,12 +123,12 @@ $(document).ready(function() {
   });
 
   test('collections: all', function() {
-    ok(_.all([]), 'the empty set');
-    ok(_.all([true, true, true]), 'all true values');
-    ok(!_.all([true, false, true]), 'one false value');
+    ok(_.all([], _.identity), 'the empty set');
+    ok(_.all([true, true, true], _.identity), 'all true values');
+    ok(!_.all([true, false, true], _.identity), 'one false value');
     ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
     ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
-    ok(_.every([true, true, true]), 'aliased as "every"');
+    ok(_.every([true, true, true], _.identity), 'aliased as "every"');
   });
 
   test('collections: any', function() {
diff --git a/underscore.js b/underscore.js
index 1b5ba3f27..981a7ce8f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -168,7 +168,6 @@
   // Delegates to **ECMAScript 5**'s native `every` if available.
   // Aliased as `all`.
   _.every = _.all = function(obj, iterator, context) {
-    iterator || (iterator = _.identity);
     var result = true;
     if (obj == null) return result;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);

From ea44179d810ee8e551d783056d989c2b29de0ad2 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Apr 2011 17:46:16 -0400
Subject: [PATCH 296/533] Issue #123. _.extend shouldn't copy keys for
 undefined values.

---
 test/objects.js | 2 ++
 underscore.js   | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 67d05ecf2..93c441176 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -33,6 +33,8 @@ $(document).ready(function() {
     ok(_.isEqual(result, {x:'x', a:'a', b:'b'}), 'can extend from multiple source objects');
     result = _.extend({x:'x'}, {a:'a', x:2}, {a:'b'});
     ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
+    result = _.extend({}, {a: void 0, b: null});
+    equals(_.keys(result).join(''), 'b', 'extend does not copy undefined values');
   });
 
   test("objects: defaults", function() {
diff --git a/underscore.js b/underscore.js
index 981a7ce8f..c24c34645 100644
--- a/underscore.js
+++ b/underscore.js
@@ -543,7 +543,9 @@
   // Extend a given object with all the properties in passed-in object(s).
   _.extend = function(obj) {
     each(slice.call(arguments, 1), function(source) {
-      for (var prop in source) obj[prop] = source[prop];
+      for (var prop in source) {
+        if (source[prop] !== void 0) obj[prop] = source[prop];
+      }
     });
     return obj;
   };
@@ -551,7 +553,9 @@
   // Fill in a given object with default properties.
   _.defaults = function(obj) {
     each(slice.call(arguments, 1), function(source) {
-      for (var prop in source) if (obj[prop] == null) obj[prop] = source[prop];
+      for (var prop in source) {
+        if (obj[prop] == null) obj[prop] = source[prop];
+      }
     });
     return obj;
   };

From 6f25ccae31be7464a4069e0ccbb612502caa06da Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Apr 2011 18:01:53 -0400
Subject: [PATCH 297/533] michaelficarra's proposed tweak to _.after

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index c24c34645..8d55cc5ce 100644
--- a/underscore.js
+++ b/underscore.js
@@ -512,7 +512,7 @@
   // Returns a function that will only be executed after being called N times.
   _.after = function(times, func) {
     return function() {
-      if (--times === 0) { return func.apply(this, arguments); }
+      if (--times < 1) { return func.apply(this, arguments); }
     };
   };
 

From 13d4e626a8de2e73f370119dd4d9905f008e4e48 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 15 Apr 2011 18:02:51 -0400
Subject: [PATCH 298/533] removing obsolete _.after test.

---
 test/functions.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/test/functions.js b/test/functions.js
index c3eb99fe4..95267e73a 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -149,7 +149,6 @@ $(document).ready(function() {
 
     equals(testAfter(5, 5), 1, "after(N) should fire after being called N times");
     equals(testAfter(5, 4), 0, "after(N) should not fire unless called N times");
-    equals(testAfter(5, 6), 1, "after(N) should fire only once even if called more than N times");
   });
 
 });

From b6176158199acfbb400e712b6333941c130f371a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 18 Apr 2011 09:08:52 -0400
Subject: [PATCH 299/533] Underscore.js 1.1.6

---
 docs/underscore.html | 106 +++++++++++++++++++++++--------------------
 index.html           |  35 ++++++++++++--
 package.json         |   2 +-
 underscore.js        |   4 +-
 4 files changed, 91 insertions(+), 56 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index 4fd55a0ba..4294e7be1 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.5
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.6
 (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -28,7 +28,7 @@ global object.</p>             </td>             <td class="code">
     <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.5&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.6&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects implementing <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -110,7 +110,6 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeEvery</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span> <span class="o">===</span> <span class="nx">nativeEvery</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -121,7 +120,7 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -141,7 +140,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="p">(</span><span class="nx">method</span> <span class="o">?</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]</span> <span class="o">:</span> <span class="nx">value</span><span class="p">).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+      <span class="k">return</span> <span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">call</span> <span class="o">?</span> <span class="nx">method</span> <span class="o">||</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
@@ -173,7 +172,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">low</span> <span class="o">&lt;</span> <span class="nx">high</span><span class="p">)</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">mid</span> <span class="o">=</span> <span class="p">(</span><span class="nx">low</span> <span class="o">+</span> <span class="nx">high</span><span class="p">)</span> <span class="o">&gt;&gt;</span> <span class="mi">1</span><span class="p">;</span>
@@ -274,8 +273,9 @@ the native Python <code>range()</code> function. See
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">nativeBind</span> <span class="o">&amp;&amp;</span> <span class="nx">func</span><span class="p">.</span><span class="nx">bind</span> <span class="o">===</span> <span class="nx">nativeBind</span><span class="p">)</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">bind</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.
+We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">bind</span> <span class="o">===</span> <span class="nx">nativeBind</span> <span class="o">&amp;&amp;</span> <span class="nx">nativeBind</span><span class="p">)</span> <span class="k">return</span> <span class="nx">nativeBind</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
@@ -288,7 +288,7 @@ all callbacks defined on an object belong to it.</p>             </td>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
-    <span class="nx">hasher</span> <span class="o">=</span> <span class="nx">hasher</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
@@ -343,95 +343,103 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+      <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+      <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
 that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -452,31 +460,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 215d06a6a..04c878ad0 100644
--- a/index.html
+++ b/index.html
@@ -118,11 +118,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.5)</a></td>
-        <td><i>28kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.1.6)</a></td>
+        <td><i>27kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.5)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.6)</a></td>
         <td><i>3kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -160,7 +160,7 @@
       <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, 
       <a href="#memoize">memoize</a>, <a href="#delay">delay</a>, <a href="#defer">defer</a>, 
       <a href="#throttle">throttle</a>, <a href="#debounce">debounce</a>, 
-      <a href="#once">once</a>, <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
+      <a href="#once">once</a>, <a href="#after">after</a>, <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
     </p>
 
     <p>
@@ -755,6 +755,22 @@ var initialize = _.once(createApplication);
 initialize();
 initialize();
 // Application is only created once.
+</pre>
+
+      <p id="after">
+        <b class="header">after</b><code>_.after(count, function)</code>
+        <br />
+        Creates a version of the function that will only be run after first 
+        being called <b>count</b> times. Useful for grouping asynchronous responses,
+        where you want to be sure that all the async calls have finished, before
+        proceeding.
+      </p>
+      <pre>
+var renderNotes = _.after(notes.length, render);
+_.each(notes, function(note) {
+  note.asyncSave({success: renderNotes}); 
+});
+// renderNotes is run once, after all notes have saved.
 </pre>
 
       <p id="wrap">
@@ -1227,6 +1243,17 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.1.6</b> &mdash; <small><i>April 18, 2011</i></small><br />
+        Added <tt>_.after</tt>, which will return a function that only runs after
+        first being called a specified number of times.
+        <tt>_.invoke</tt> can now take a direct function reference.
+        <tt>_.every</tt> now requires an iterator function to be passed, which
+        mirrors the ECMA5 API.
+        <tt>_.extend</tt> no longer copies keys when the value is undefined.
+        <tt>_.bind</tt> now errors when trying to bind an undefined value.
+      </p>
+      
       <p>
         <b class="header">1.1.5</b> &mdash; <small><i>Mar 20, 2011</i></small><br />
         Added an <tt>_.defaults</tt> function, for use merging together JS objects
diff --git a/package.json b/package.json
index f82099236..86c918592 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.1.5"
+  "version"       : "1.1.6"
 }
diff --git a/underscore.js b/underscore.js
index 8d55cc5ce..eaba008c4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.1.5
+//     Underscore.js 1.1.6
 //     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -59,7 +59,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.1.5';
+  _.VERSION = '1.1.6';
 
   // Collection Functions
   // --------------------

From bf87d8997c0011030171c4b4b0d7bd8e84723129 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 18 Apr 2011 09:09:25 -0400
Subject: [PATCH 300/533] 1.1.6 + min

---
 underscore-min.js | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 underscore-min.js

diff --git a/underscore-min.js b/underscore-min.js
new file mode 100644
index 000000000..f502cf9f6
--- /dev/null
+++ b/underscore-min.js
@@ -0,0 +1,26 @@
+// Underscore.js 1.1.6
+// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.6";var h=b.each=b.forEach=function(a,c,d){if(a!=null)if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
+0,k=a.length;e<k;e++){if(c.call(d,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(d,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);h(a,function(a,g,G){e[e.length]=c.call(b,a,g,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);h(a,function(a,b,f){!k&&b===0?(d=a,k=!0):d=c.call(e,d,a,b,f)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
+return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,g,f){if(c.call(b,a,g,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);h(a,function(a,g,f){c.call(b,a,g,f)&&(e[e.length]=a)});return e};
+b.reject=function(a,c,b){var e=[];if(a==null)return e;h(a,function(a,g,f){c.call(b,a,g,f)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=!0;if(a==null)return e;if(x&&a.every===x)return a.every(c,b);h(a,function(a,g,f){if(!(e=e&&c.call(b,a,g,f)))return m});return e};var A=b.some=b.any=function(a,c,d){c||(c=b.identity);var e=!1;if(a==null)return e;if(y&&a.some===y)return a.some(c,d);h(a,function(a,b,f){if(e=c.call(d,a,b,f))return m});return e};b.include=b.contains=function(a,c){var b=
+!1;if(a==null)return b;if(o&&a.indexOf===o)return a.indexOf(c)!=-1;A(a,function(a){if(b=a===c)return!0});return b};b.invoke=function(a,c){var d=f.call(arguments,2);return b.map(a,function(a){return(c.call?c||a:a[c]).apply(a,d)})};b.pluck=function(a,c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,
+c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b<e.computed&&(e={value:a,computed:b})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(a,b,f){return{value:a,criteria:c.call(d,a,b,f)}}).sort(function(a,b){var c=a.criteria,d=b.criteria;return c<d?-1:c>d?1:0}),"value")};b.sortedIndex=function(a,c,d){d||(d=b.identity);for(var e=0,f=a.length;e<f;){var g=e+f>>1;d(a[g])<d(c)?e=g+1:f=g}return e};b.toArray=
+function(a){if(!a)return[];if(a.toArray)return a.toArray();if(b.isArray(a))return a;if(b.isArguments(a))return f.call(a);return b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=b.head=function(a,b,d){return b!=null&&!d?f.call(a,0,b):a[0]};b.rest=b.tail=function(a,b,d){return f.call(a,b==null||d?1:b)};b.last=function(a){return a[a.length-1]};b.compact=function(a){return b.filter(a,function(a){return!!a})};b.flatten=function(a){return b.reduce(a,function(a,d){if(b.isArray(d))return a.concat(b.flatten(d));
+a[a.length]=d;return a},[])};b.without=function(a){var c=f.call(arguments,1);return b.filter(a,function(a){return!b.include(c,a)})};b.uniq=b.unique=function(a,c){return b.reduce(a,function(a,e,f){if(0==f||(c===!0?b.last(a)!=e:!b.include(a,e)))a[a.length]=e;return a},[])};b.intersect=function(a){var c=f.call(arguments,1);return b.filter(b.uniq(a),function(a){return b.every(c,function(c){return b.indexOf(c,a)>=0})})};b.zip=function(){for(var a=f.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),
+e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c,d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(o&&a.indexOf===o)return a.indexOf(c);d=0;for(e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);d=arguments[2]||1;for(var e=Math.max(Math.ceil((b-a)/
+d),0),f=0,g=Array(e);f<e;)g[f++]=a,a+=d;return g};b.bind=function(a,b){if(a.bind===q&&q)return q.apply(a,f.call(arguments,1));var d=f.call(arguments,2);return function(){return a.apply(b,d.concat(f.call(arguments)))}};b.bindAll=function(a){var c=f.call(arguments,1);c.length==0&&(c=b.functions(a));h(c,function(c){a[c]=b.bind(a[c],a)});return a};b.memoize=function(a,c){var d={};c||(c=b.identity);return function(){var b=c.apply(this,arguments);return l.call(d,b)?d[b]:d[b]=a.apply(this,arguments)}};b.delay=
+function(a,b){var d=f.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(f.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};b.throttle=function(a,b){return B(a,b,!1)};b.debounce=function(a,b){return B(a,b,!0)};b.once=function(a){var b=!1,d;return function(){if(b)return d;b=!0;return d=a.apply(this,arguments)}};
+b.wrap=function(a,b){return function(){var d=[a].concat(f.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=f.call(arguments);return function(){for(var b=f.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return function(){if(--a<1)return b.apply(this,arguments)}};b.keys=F||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)l.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,
+b.identity)};b.functions=b.methods=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){h(f.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){h(f.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,c){if(a===c)return!0;var d=typeof a;if(d!=
+typeof c)return!1;if(a==c)return!0;if(!a&&c||a&&!c)return!1;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return!1;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return!1;if(a.length&&a.length!==c.length)return!1;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return!1;
+for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return!1;return!0};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(l.call(a,c))return!1;return!0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=n||function(a){return E.call(a)==="[object Array]"};b.isArguments=function(a){return!(!a||!l.call(a,"callee"))};b.isFunction=function(a){return!(!a||!a.constructor||!a.call||!a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};
+b.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===!0||a===!1};b.isDate=function(a){return!(!a||!a.getTimezoneOffset||!a.setUTCFullYear)};b.isRegExp=function(a){return!(!a||!a.test||!a.exec||!(a.ignoreCase||a.ignoreCase===!1))};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){p._=C;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=
+0;e<a;e++)b.call(d,e)};b.mixin=function(a){h(b.functions(a),function(c){H(c,b[c]=a[c])})};var I=0;b.uniqueId=function(a){var b=I++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||
+null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};var j=function(a){this._wrapped=a};b.prototype=j.prototype;var r=function(a,c){return c?b(a).chain():a},H=function(a,c){j.prototype[a]=function(){var a=f.call(arguments);D.call(a,this._wrapped);return r(c.apply(b,a),this._chain)}};b.mixin(b);h(["pop","push","reverse","shift","sort",
+"splice","unshift"],function(a){var b=i[a];j.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});h(["concat","join","slice"],function(a){var b=i[a];j.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});j.prototype.chain=function(){this._chain=!0;return this};j.prototype.value=function(){return this._wrapped}})();

From c174663ea3b7d18d9df4f94dfb69eddc35686522 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Sun, 24 Apr 2011 11:41:31 -0400
Subject: [PATCH 301/533] fixing docs for 'all'

---
 index.html | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index 04c878ad0..685706fee 100644
--- a/index.html
+++ b/index.html
@@ -340,16 +340,14 @@ var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 </pre>
 
       <p id="all">
-        <b class="header">all</b><code>_.all(list, [iterator], [context])</code>
+        <b class="header">all</b><code>_.all(list, iterator, [context])</code>
         <span class="alias">Alias: <b>every</b></span>
         <br />
         Returns <i>true</i> if all of the values in the <b>list</b> pass the <b>iterator</b>
-        truth test. If an <b>iterator</b> is not provided, the truthy value of
-        the element will be used instead. Delegates to the native method <b>every</b>, if
-        present.
+        truth test. Delegates to the native method <b>every</b>, if present.
       </p>
       <pre>
-_.all([true, 1, null, 'yes']);
+_.all([true, 1, null, 'yes'], _.identity);
 =&gt; false
 </pre>
 

From efa717b09ef63f4ed5ccf18de9d0ef44aa947be1 Mon Sep 17 00:00:00 2001
From: Danny Tatom <dannytatom@gmail.com>
Date: Tue, 3 May 2011 17:29:21 -0700
Subject: [PATCH 302/533] Should be 'A convenient,' not 'An convenient'

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 685706fee..181c0b1f1 100644
--- a/index.html
+++ b/index.html
@@ -393,7 +393,7 @@ _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
       <p id="pluck">
         <b class="header">pluck</b><code>_.pluck(list, propertyName)</code>
         <br />
-        An convenient version of what is perhaps the most common use-case for
+        A convenient version of what is perhaps the most common use-case for
         <b>map</b>: extracting a list of property values.
       </p>
       <pre>

From b9307163b974991885b50e3ac09b54bd00a06153 Mon Sep 17 00:00:00 2001
From: Alfredo Mesen <amesen@backcountry.com>
Date: Tue, 3 May 2011 21:09:54 -0600
Subject: [PATCH 303/533] Add optional iterator to _.uniq

---
 index.html     |  6 +++++-
 test/arrays.js |  8 ++++++++
 underscore.js  | 12 +++++++++---
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 685706fee..db4de3758 100644
--- a/index.html
+++ b/index.html
@@ -547,16 +547,20 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
 </pre>
 
       <p id="uniq">
-        <b class="header">uniq</b><code>_.uniq(array, [isSorted])</code>
+        <b class="header">uniq</b><code>_.uniq(array, [isSorted], [iterator])</code>
         <span class="alias">Alias: <b>unique</b></span>
         <br />
         Produces a duplicate-free version of the <b>array</b>, using <i>===</i> to test
         object equality. If you know in advance that the <b>array</b> is sorted,
         passing <i>true</i> for <b>isSorted</b> will run a much faster algorithm.
+        Can receive an iterator to determine which part of the element gets tested.
       </p>
       <pre>
 _.uniq([1, 2, 1, 3, 1, 4]);
 =&gt; [1, 2, 3, 4]
+
+_.uniq([{name:'moe'}, {name:'curly'}, {name:'larry'}, {name:'curly'}], false, function (value) { return value.name; })
+=&gt;[{name:'moe'}, {name:'curly'}, {name:'larry'}]
 </pre>
 
       <p id="intersect">
diff --git a/test/arrays.js b/test/arrays.js
index e031afe9b..985f4d956 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -61,6 +61,14 @@ $(document).ready(function() {
     var list = [1, 1, 1, 2, 2, 3];
     equals(_.uniq(list, true).join(', '), '1, 2, 3', 'can find the unique values of a sorted array faster');
 
+    var list = [{name:'moe'}, {name:'curly'}, {name:'larry'}, {name:'curly'}];
+    var iterator = function(value) { return value.name; };
+    equals(_.map(_.uniq(list, false, iterator), iterator).join(', '), 'moe, curly, larry', 'can find the unique values of an array using a custom iterator');
+
+    var iterator = function(value) { return value +1; };
+    var list = [1, 2, 2, 3, 4, 4];
+    equals(_.uniq(list, true, iterator).join(', '), '1, 2, 3, 4', 'iterator works with sorted array');
+
     var result = (function(){ return _.uniq(arguments); })(1, 2, 1, 3, 1, 4);
     equals(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
   });
diff --git a/underscore.js b/underscore.js
index eaba008c4..3d83511fc 100644
--- a/underscore.js
+++ b/underscore.js
@@ -323,11 +323,17 @@
   // Produce a duplicate-free version of the array. If the array has already
   // been sorted, you have the option of using a faster algorithm.
   // Aliased as `unique`.
-  _.uniq = _.unique = function(array, isSorted) {
-    return _.reduce(array, function(memo, el, i) {
-      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) memo[memo.length] = el;
+  _.uniq = _.unique = function(array, isSorted, iterator) {
+    var initial = iterator ? _.map(array, iterator) : array;
+    var result = [];
+    _.reduce(initial, function(memo, el, i) {
+      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
+        memo[memo.length] = el;
+        result[result.length] = array[i];
+      }
       return memo;
     }, []);
+    return result;
   };
 
   // Produce an array that contains every item shared between all the

From f8a4b78a86660fe0e030d9bd7f7350fbb788cb01 Mon Sep 17 00:00:00 2001
From: Andrei <andrei@nytimes.com>
Date: Thu, 5 May 2011 14:00:40 -0400
Subject: [PATCH 304/533] Adding groupBy.

---
 index.html          | 13 ++++++++++++-
 test/collections.js |  6 ++++++
 underscore.js       | 15 +++++++++++++++
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 685706fee..d83ed3796 100644
--- a/index.html
+++ b/index.html
@@ -141,7 +141,7 @@
       <a href="#any">any</a>, <a href="#include">include</a>,
       <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
       <a href="#max">max</a>, <a href="#min">min</a>,
-      <a href="#sortBy">sortBy</a>, <a href="#sortedIndex">sortedIndex</a>,
+      <a href="#sortBy">sortBy</a>, <a href="#groupBy">groupBy</a>, <a href="#sortedIndex">sortedIndex</a>,
       <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
 
@@ -437,6 +437,17 @@ _.min(numbers);
       <pre>
 _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
 =&gt; [5, 4, 6, 3, 1, 2]
+</pre>
+
+      <p id="groupBy">
+        <b class="header">groupBy</b><code>_.groupBy(list, iterator)</code>
+        <br />
+        Splits a collection into sets, grouped by the result of running each
+        value through <b>iterator</b>.
+      </p>
+      <pre>
+_.groupBy([1.3, 2.1, 2.4], function(num){ return Math.floor(num); });
+=&gt; {1: [1.3], 2: [2.1, 2.4]}
 </pre>
 
       <p id="sortedIndex">
diff --git a/test/collections.js b/test/collections.js
index ff365f8ea..e1dc5ebfc 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -185,6 +185,12 @@ $(document).ready(function() {
     people = _.sortBy(people, function(person){ return person.age; });
     equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
   });
+  
+  test('collections: groupBy', function() {
+    var parity = _.groupBy([1, 2, 3, 4, 5, 6], function(num){ return num % 2; });
+    equals(_.keys(parity).join(', '), '0, 1', 'created a group for each value');
+    equals(parity[0].join(', '), '2, 4, 6', 'put each even number in the right group');
+  })
 
   test('collections: sortedIndex', function() {
     var numbers = [10, 20, 30, 40, 50], num = 35;
diff --git a/underscore.js b/underscore.js
index eaba008c4..468c06a9e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -250,6 +250,21 @@
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };
+  
+  // Groups the object's values by a criterion produced by an iterator
+  _.groupBy = function(obj, iterator) {
+    var result = {};
+    each(obj, function(value) {
+      var key = iterator(value);
+      if (result.hasOwnProperty(key)) {
+        result[key].push(value);
+      }
+      else {
+        result[key] = [value];
+      }
+    });
+    return result;
+  }
 
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.

From b75e48c0575184680b545927775c200c84557b3e Mon Sep 17 00:00:00 2001
From: Andrei <andrei@nytimes.com>
Date: Thu, 5 May 2011 14:31:40 -0400
Subject: [PATCH 305/533] cleaned up key check in groupBy

---
 underscore.js | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/underscore.js b/underscore.js
index 468c06a9e..cbcd476e4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -256,12 +256,7 @@
     var result = {};
     each(obj, function(value) {
       var key = iterator(value);
-      if (result.hasOwnProperty(key)) {
-        result[key].push(value);
-      }
-      else {
-        result[key] = [value];
-      }
+      (result[key] || (result[key] = [])).push(value)
     });
     return result;
   }

From 1681d250635d099fe2d7d88e275322eecb0699af Mon Sep 17 00:00:00 2001
From: Andrei <andrei@nytimes.com>
Date: Thu, 5 May 2011 14:43:28 -0400
Subject: [PATCH 306/533] in groupBy, also pass index to iterator.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index cbcd476e4..a0ad75eec 100644
--- a/underscore.js
+++ b/underscore.js
@@ -254,8 +254,8 @@
   // Groups the object's values by a criterion produced by an iterator
   _.groupBy = function(obj, iterator) {
     var result = {};
-    each(obj, function(value) {
-      var key = iterator(value);
+    each(obj, function(value, index) {
+      var key = iterator(value, index);
       (result[key] || (result[key] = [])).push(value)
     });
     return result;

From 6846d71f88417905ab0284e89f15e0b0a140ad2c Mon Sep 17 00:00:00 2001
From: shinuza <samorigorse@gmail.com>
Date: Sat, 7 May 2011 11:24:05 +0200
Subject: [PATCH 307/533] Fixing _.any returning an incorrect result when
 Array.prototype.some is missing but Array.prototype.forEach exists.

---
 underscore.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index a0ad75eec..1119eb400 100644
--- a/underscore.js
+++ b/underscore.js
@@ -186,7 +186,10 @@
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
-      if (result = iterator.call(context, value, index, list)) return breaker;
+      if (iterator.call(context, value, index, list)) {
+        result = true;
+        return breaker;
+      }
     });
     return result;
   };

From 899000c21771120933e914da14ab8b2279a0d424 Mon Sep 17 00:00:00 2001
From: shinuza <samorigorse@gmail.com>
Date: Sat, 7 May 2011 12:03:02 +0200
Subject: [PATCH 308/533] Hashmap keys are not necessarily ordered. groupBy
 test may fail if the expected order is not correct. Fixing this by checking
 if the keys are present in the hash so the order is not deterministic.

---
 test/collections.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index e1dc5ebfc..1ca9d5de2 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -188,9 +188,9 @@ $(document).ready(function() {
   
   test('collections: groupBy', function() {
     var parity = _.groupBy([1, 2, 3, 4, 5, 6], function(num){ return num % 2; });
-    equals(_.keys(parity).join(', '), '0, 1', 'created a group for each value');
+    ok('0' in parity && '1' in parity, 'created a group for each value');
     equals(parity[0].join(', '), '2, 4, 6', 'put each even number in the right group');
-  })
+  });
 
   test('collections: sortedIndex', function() {
     var numbers = [10, 20, 30, 40, 50], num = 35;

From 5141a51298c0c4ef02219ec404736a425ebf3da9 Mon Sep 17 00:00:00 2001
From: shinuza <samorigorse@gmail.com>
Date: Sat, 7 May 2011 16:29:43 +0200
Subject: [PATCH 309/533] Refactored fix as suggested in
 https://github.com/documentcloud/underscore/issues/177

---
 underscore.js | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/underscore.js b/underscore.js
index 1119eb400..d007edf57 100644
--- a/underscore.js
+++ b/underscore.js
@@ -180,19 +180,16 @@
   // Determine if at least one element in the object matches a truth test.
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
-  var any = _.some = _.any = function(obj, iterator, context) {
-    iterator || (iterator = _.identity);
+  var any = _.some = _.any = function (obj, iterator, context) {
+    iterator = iterator || _.identity;
     var result = false;
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
-    each(obj, function(value, index, list) {
-      if (iterator.call(context, value, index, list)) {
-        result = true;
-        return breaker;
-      }
+    each(obj, function (value, index, list) {
+        if (result |= iterator.call(context, value, index, list)) return breaker;
     });
-    return result;
-  };
+    return !!result;
+  }
 
   // Determine if a given value is included in the array or object using `===`.
   // Aliased as `contains`.

From 72c5558471000615d17a9e744684ac20453ab77e Mon Sep 17 00:00:00 2001
From: Dustin Diaz <polvero@gmail.com>
Date: Tue, 10 May 2011 23:09:26 -0700
Subject: [PATCH 310/533] set "_" extern for use with Closure Compilers
 ADVANCED_OPTIMIZATIONS

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index a0ad75eec..f7505825a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,7 +55,7 @@
     module.exports = _;
     _._ = _;
   } else {
-    root._ = _;
+    root['_'] = _;
   }
 
   // Current version.
@@ -250,7 +250,7 @@
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };
-  
+
   // Groups the object's values by a criterion produced by an iterator
   _.groupBy = function(obj, iterator) {
     var result = {};

From 057da5bc82f823562f7642f19bd8d2dce58c2907 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 11 May 2011 10:27:52 -0400
Subject: [PATCH 311/533] Issue #202 ... fallback method for sparse arrays.

---
 test/collections.js | 6 +-----
 underscore.js       | 6 +++---
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 1ca9d5de2..32a1ee1bf 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -26,10 +26,6 @@ $(document).ready(function() {
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
     ok(answer, 'can reference the original collection from inside the iterator');
 
-    answers = [];
-    _.each({range : 1, speed : 2, length : 3}, function(v){ answers.push(v); });
-    ok(answers.join(', '), '1, 2, 3', 'can iterate over objects with numeric length properties');
-
     answers = 0;
     _.each(null, function(){ ++answers; });
     equals(answers, 0, 'handles a null properly');
@@ -185,7 +181,7 @@ $(document).ready(function() {
     people = _.sortBy(people, function(person){ return person.age; });
     equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
   });
-  
+
   test('collections: groupBy', function() {
     var parity = _.groupBy([1, 2, 3, 4, 5, 6], function(num){ return num % 2; });
     ok('0' in parity && '1' in parity, 'created a group for each value');
diff --git a/underscore.js b/underscore.js
index a0ad75eec..2aa216835 100644
--- a/underscore.js
+++ b/underscore.js
@@ -73,7 +73,7 @@
       obj.forEach(iterator, context);
     } else if (_.isNumber(obj.length)) {
       for (var i = 0, l = obj.length; i < l; i++) {
-        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+        if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
       }
     } else {
       for (var key in obj) {
@@ -250,7 +250,7 @@
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };
-  
+
   // Groups the object's values by a criterion produced by an iterator
   _.groupBy = function(obj, iterator) {
     var result = {};
@@ -512,7 +512,7 @@
     var funcs = slice.call(arguments);
     return function() {
       var args = slice.call(arguments);
-      for (var i=funcs.length-1; i >= 0; i--) {
+      for (var i = funcs.length - 1; i >= 0; i--) {
         args = [funcs[i].apply(this, args)];
       }
       return args[0];

From 910af6797ffd9197f54bce2c41735e88023f3dfd Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 11 May 2011 11:00:15 -0400
Subject: [PATCH 312/533] Fixing #185

---
 index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index f0c754728..9cbc3a0a7 100644
--- a/index.html
+++ b/index.html
@@ -431,8 +431,8 @@ _.min(numbers);
       <p id="sortBy">
         <b class="header">sortBy</b><code>_.sortBy(list, iterator, [context])</code>
         <br />
-        Returns a sorted <b>list</b>, ranked by the results of running each
-        value through <b>iterator</b>.
+        Returns a sorted copy of <b>list</b>, ranked by the results of running 
+        each value through <b>iterator</b>.
       </p>
       <pre>
 _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });

From 1331d814f9f27e45feefd8ca4f5ca4fd09391160 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 11 May 2011 11:02:51 -0400
Subject: [PATCH 313/533] re-adding underscore-min.js to master

---
 .npmignore        |  1 -
 underscore-min.js | 26 ++++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 underscore-min.js

diff --git a/.npmignore b/.npmignore
index f5717584f..2ce268489 100644
--- a/.npmignore
+++ b/.npmignore
@@ -1,4 +1,3 @@
 test/
-underscore-min.js
 Rakefile
 docs/
\ No newline at end of file
diff --git a/underscore-min.js b/underscore-min.js
new file mode 100644
index 000000000..54bd0649f
--- /dev/null
+++ b/underscore-min.js
@@ -0,0 +1,26 @@
+// Underscore.js 1.1.6
+// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.6";var h=b.each=b.forEach=function(a,c,d){if(a!=null)if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
+0,k=a.length;e<k;e++){if(e in a&&c.call(d,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(d,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);h(a,function(a,g,G){e[e.length]=c.call(b,a,g,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);h(a,function(a,b,f){!k&&b===0?(d=a,k=!0):d=c.call(e,d,a,b,f)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
+return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,g,f){if(c.call(b,a,g,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);h(a,function(a,g,f){c.call(b,a,g,f)&&(e[e.length]=a)});return e};
+b.reject=function(a,c,b){var e=[];if(a==null)return e;h(a,function(a,g,f){c.call(b,a,g,f)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=!0;if(a==null)return e;if(x&&a.every===x)return a.every(c,b);h(a,function(a,g,f){if(!(e=e&&c.call(b,a,g,f)))return m});return e};var A=b.some=b.any=function(a,c,d){c||(c=b.identity);var e=!1;if(a==null)return e;if(y&&a.some===y)return a.some(c,d);h(a,function(a,b,f){if(e=c.call(d,a,b,f))return m});return e};b.include=b.contains=function(a,c){var b=
+!1;if(a==null)return b;if(o&&a.indexOf===o)return a.indexOf(c)!=-1;A(a,function(a){if(b=a===c)return!0});return b};b.invoke=function(a,c){var d=f.call(arguments,2);return b.map(a,function(a){return(c.call?c||a:a[c]).apply(a,d)})};b.pluck=function(a,c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,
+c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b<e.computed&&(e={value:a,computed:b})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(a,b,f){return{value:a,criteria:c.call(d,a,b,f)}}).sort(function(a,b){var c=a.criteria,d=b.criteria;return c<d?-1:c>d?1:0}),"value")};b.groupBy=function(a,b){var d={};h(a,function(a,f){var g=b(a,f);(d[g]||(d[g]=[])).push(a)});return d};b.sortedIndex=function(a,c,d){d||
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+function(a){return!!a})};b.flatten=function(a){return b.reduce(a,function(a,d){if(b.isArray(d))return a.concat(b.flatten(d));a[a.length]=d;return a},[])};b.without=function(a){var c=f.call(arguments,1);return b.filter(a,function(a){return!b.include(c,a)})};b.uniq=b.unique=function(a,c){return b.reduce(a,function(a,e,f){if(0==f||(c===!0?b.last(a)!=e:!b.include(a,e)))a[a.length]=e;return a},[])};b.intersect=function(a){var c=f.call(arguments,1);return b.filter(b.uniq(a),function(a){return b.every(c,
+function(c){return b.indexOf(c,a)>=0})})};b.zip=function(){for(var a=f.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c,d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(o&&a.indexOf===o)return a.indexOf(c);d=0;for(e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(z&&a.lastIndexOf===z)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;
+return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);d=arguments[2]||1;for(var e=Math.max(Math.ceil((b-a)/d),0),f=0,g=Array(e);f<e;)g[f++]=a,a+=d;return g};b.bind=function(a,b){if(a.bind===q&&q)return q.apply(a,f.call(arguments,1));var d=f.call(arguments,2);return function(){return a.apply(b,d.concat(f.call(arguments)))}};b.bindAll=function(a){var c=f.call(arguments,1);c.length==0&&(c=b.functions(a));h(c,function(c){a[c]=b.bind(a[c],a)});return a};b.memoize=function(a,c){var d={};c||
+(c=b.identity);return function(){var b=c.apply(this,arguments);return l.call(d,b)?d[b]:d[b]=a.apply(this,arguments)}};b.delay=function(a,b){var d=f.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(f.call(arguments,1)))};var B=function(a,b,d){var e;return function(){var f=this,g=arguments,h=function(){e=null;a.apply(f,g)};d&&clearTimeout(e);if(d||!e)e=setTimeout(h,b)}};b.throttle=function(a,b){return B(a,b,!1)};b.debounce=
+function(a,b){return B(a,b,!0)};b.once=function(a){var b=!1,d;return function(){if(b)return d;b=!0;return d=a.apply(this,arguments)}};b.wrap=function(a,b){return function(){var d=[a].concat(f.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=f.call(arguments);return function(){for(var b=f.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return function(){if(--a<1)return b.apply(this,arguments)}};b.keys=F||function(a){if(a!==Object(a))throw new TypeError("Invalid object");
+var b=[],d;for(d in a)l.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){return b.filter(b.keys(a),function(c){return b.isFunction(a[c])}).sort()};b.extend=function(a){h(f.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){h(f.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return b.isArray(a)?a.slice():b.extend({},a)};
+b.tap=function(a,b){b(a);return a};b.isEqual=function(a,c){if(a===c)return!0;var d=typeof a;if(d!=typeof c)return!1;if(a==c)return!0;if(!a&&c||a&&!c)return!1;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual)return a.isEqual(c);if(b.isDate(a)&&b.isDate(c))return a.getTime()===c.getTime();if(b.isNaN(a)&&b.isNaN(c))return!1;if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return!1;if(a.length&&
+a.length!==c.length)return!1;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return!1;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return!1;return!0};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(l.call(a,c))return!1;return!0};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=n||function(a){return E.call(a)==="[object Array]"};b.isArguments=function(a){return!(!a||!l.call(a,"callee"))};b.isFunction=function(a){return!(!a||!a.constructor||
+!a.call||!a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===!0||a===!1};b.isDate=function(a){return!(!a||!a.getTimezoneOffset||!a.setUTCFullYear)};b.isRegExp=function(a){return!(!a||!a.test||!a.exec||!(a.ignoreCase||a.ignoreCase===!1))};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=
+function(){p._=C;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.mixin=function(a){h(b.functions(a),function(c){H(c,b[c]=a[c])})};var I=0;b.uniqueId=function(a){var b=I++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,
+function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};var j=function(a){this._wrapped=a};b.prototype=j.prototype;var r=function(a,c){return c?b(a).chain():a},H=function(a,c){j.prototype[a]=function(){var a=f.call(arguments);D.call(a,this._wrapped);return r(c.apply(b,
+a),this._chain)}};b.mixin(b);h(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=i[a];j.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});h(["concat","join","slice"],function(a){var b=i[a];j.prototype[a]=function(){return r(b.apply(this._wrapped,arguments),this._chain)}});j.prototype.chain=function(){this._chain=!0;return this};j.prototype.value=function(){return this._wrapped}})();

From bf6098f986450dad312a8ceacd3c02415e93f722 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 11 May 2011 13:08:59 -0400
Subject: [PATCH 314/533] closure-compiler comment, plus semicolons.

---
 underscore.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 1688e42fa..84fc889ee 100644
--- a/underscore.js
+++ b/underscore.js
@@ -55,6 +55,7 @@
     module.exports = _;
     _._ = _;
   } else {
+    // Exported as a string, for Closure Compiler "advanced" mode.
     root['_'] = _;
   }
 
@@ -256,10 +257,10 @@
     var result = {};
     each(obj, function(value, index) {
       var key = iterator(value, index);
-      (result[key] || (result[key] = [])).push(value)
+      (result[key] || (result[key] = [])).push(value);
     });
     return result;
-  }
+  };
 
   // Use a comparator function to figure out at what index an object should
   // be inserted so as to maintain order. Uses binary search.

From cf6cc16f4308a7055bff8140f3fe33518c01ffd7 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 13 May 2011 17:09:15 -0400
Subject: [PATCH 315/533] Issue #207 -- add Data.js to the docs.

---
 index.html | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/index.html b/index.html
index 9cbc3a0a7..8e73aba63 100644
--- a/index.html
+++ b/index.html
@@ -1245,6 +1245,11 @@ _([1, 2, 3]).value();
         <a href="http://osteele.com/sources/javascript/functional/">Functional JavaScript</a>,
         which includes comprehensive higher-order function support as well as string lambdas.
       </p>
+      
+      <p>
+        Michael Aufreiter's <a href="http://substance.io/#michael/data-js">Data.js</a>,
+        a data manipulation + persistence library for JavaScript.
+      </p>
 
       <p>
         Python's <a href="http://docs.python.org/library/itertools.html">itertools</a>.

From 40af1652ebb1b07ae1dc7e754e9872b1db5a5a5f Mon Sep 17 00:00:00 2001
From: shinuza <samorigorse@gmail.com>
Date: Fri, 20 May 2011 09:13:58 +0200
Subject: [PATCH 316/533] Modified any/some test case to demonstrate issue #177
 Fixed any/some formatting to be consistent with the rest of underscore.js

---
 test/collections.js | 3 +++
 underscore.js       | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index e1dc5ebfc..91027f217 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -132,12 +132,15 @@ $(document).ready(function() {
   });
 
   test('collections: any', function() {
+    var nativeSome = Array.prototype.some;
+    Array.prototype.some = null;
     ok(!_.any([]), 'the empty set');
     ok(!_.any([false, false, false]), 'all false values');
     ok(_.any([false, false, true]), 'one true value');
     ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
     ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
     ok(_.some([false, false, true]), 'aliased as "some"');
+    Array.prototype.some = nativeSome;
   });
 
   test('collections: include', function() {
diff --git a/underscore.js b/underscore.js
index d007edf57..5c707e99f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -186,10 +186,10 @@
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function (value, index, list) {
-        if (result |= iterator.call(context, value, index, list)) return breaker;
+      if (result |= iterator.call(context, value, index, list)) return breaker;
     });
     return !!result;
-  }
+  };
 
   // Determine if a given value is included in the array or object using `===`.
   // Aliased as `contains`.

From 42487bf47dff4b0732977af2c6297b67ecec70af Mon Sep 17 00:00:00 2001
From: Dmitry Baranovskiy <Dmitry@Baranovskiy.com>
Date: Tue, 7 Jun 2011 09:48:34 +1000
Subject: [PATCH 317/533] Fixed isEqual if second object has isEqual
 implemented and added isObject method

---
 test/objects.js | 17 +++++++++++++++++
 underscore.js   |  6 ++++++
 2 files changed, 23 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index 93c441176..48971c079 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -77,6 +77,8 @@ $(document).ready(function() {
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
+    ok(_.isEqual({isEqual: function () { return true; }}, {}), 'first object implements `isEqual`');
+    ok(_.isEqual({}, {isEqual: function () { return true; }}), 'second object implements `isEqual`');
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
     ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
     equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, 'wrapped objects are equal');
@@ -136,6 +138,21 @@ $(document).ready(function() {
     ok(_.isArguments(iArguments), 'even from another frame');
   });
 
+  test("objects: isObject", function() {
+    ok(_.isObject(arguments), 'the arguments object is object');
+    ok(_.isObject([1, 2, 3]), 'and arrays');
+    ok(_.isObject($('html')[0]), 'and DOM element');
+    ok(_.isObject(iElement), 'even from another frame');
+    ok(_.isObject(function () {}), 'and functions');
+    ok(_.isObject(iFunction), 'even from another frame');
+    ok(!_.isObject(null), 'but not null');
+    ok(!_.isObject(undefined), 'and not undefined');
+    ok(!_.isObject('string'), 'and not string');
+    ok(!_.isObject(12), 'and not number');
+    ok(!_.isObject(true), 'and not boolean');
+    ok(_.isObject(new String('string')), 'but new String()');
+  });
+
   test("objects: isArray", function() {
     ok(!_.isArray(arguments), 'the arguments object is not an array');
     ok(_.isArray([1, 2, 3]), 'but arrays are');
diff --git a/underscore.js b/underscore.js
index 84fc889ee..61fdb6ed5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -600,6 +600,7 @@
     if (b._chain) b = b._wrapped;
     // One of them implements an isEqual()?
     if (a.isEqual) return a.isEqual(b);
+    if (b.isEqual) return b.isEqual(a);
     // Check dates' integer values.
     if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
     // Both are NaN?
@@ -641,6 +642,11 @@
     return toString.call(obj) === '[object Array]';
   };
 
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
     return !!(obj && hasOwnProperty.call(obj, 'callee'));

From b949d0345f11f67310cc06ff72a926f7814942a3 Mon Sep 17 00:00:00 2001
From: Cat Chen <cathsfz@gmail.com>
Date: Mon, 20 Jun 2011 22:30:35 +0800
Subject: [PATCH 318/533] updated _.delay test to use setTimeout to verify
 _.delay's behavior

---
 test/functions.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 95267e73a..2a1bd51bd 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -73,8 +73,8 @@ $(document).ready(function() {
   asyncTest("functions: delay", 2, function() {
     var delayed = false;
     _.delay(function(){ delayed = true; }, 100);
-    _.delay(function(){ ok(!delayed, "didn't delay the function quite yet"); }, 50);
-    _.delay(function(){ ok(delayed, 'delayed the function'); start(); }, 150);
+    setTimeout(function(){ ok(!delayed, "didn't delay the function quite yet"); }, 50);
+    setTimeout(function(){ ok(delayed, 'delayed the function'); start(); }, 150);
   });
 
   asyncTest("functions: defer", 1, function() {

From 0202f9f79b882723e3aa19598cc31492c07c3096 Mon Sep 17 00:00:00 2001
From: Florian Friesdorf <flo@chaoflow.net>
Date: Tue, 21 Jun 2011 18:31:40 +0200
Subject: [PATCH 319/533] make toArray return a clone in case of an array

In combination with backbone this makes coll.toArray() return an array
instead of just returning coll.models, enabling
coll.remove(coll.toArray()) whithout failing half way through.
---
 test/collections.js | 3 +++
 underscore.js       | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/collections.js b/test/collections.js
index 32a1ee1bf..912abaf26 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -197,6 +197,9 @@ $(document).ready(function() {
   test('collections: toArray', function() {
     ok(!_.isArray(arguments), 'arguments object is not an array');
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
+    var a = [1,2,3];
+    ok(_.toArray(a) !== a, 'array is cloned');
+    equals(_.toArray(a).join(', '), '1, 2, 3', 'cloned array contains same elements');
 
     var numbers = _.toArray({one : 1, two : 2, three : 3});
     equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
diff --git a/underscore.js b/underscore.js
index 61fdb6ed5..804a005e2 100644
--- a/underscore.js
+++ b/underscore.js
@@ -278,7 +278,7 @@
   _.toArray = function(iterable) {
     if (!iterable)                return [];
     if (iterable.toArray)         return iterable.toArray();
-    if (_.isArray(iterable))      return iterable;
+    if (_.isArray(iterable))      return slice.call(iterable);
     if (_.isArguments(iterable))  return slice.call(iterable);
     return _.values(iterable);
   };

From 9ab3ac44bbb39d21bb0ec1334fe9901e5b3f42bc Mon Sep 17 00:00:00 2001
From: Florian Friesdorf <flo@chaoflow.net>
Date: Sat, 25 Jun 2011 09:01:51 +0200
Subject: [PATCH 320/533] move underscore test into a div

more comfortable to include underscore with tests in some other project.
---
 test/collections.js |  2 +-
 test/test.html      | 35 ++++++++++++++++++-----------------
 2 files changed, 19 insertions(+), 18 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 912abaf26..9a4d49ec4 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -41,7 +41,7 @@ $(document).ready(function() {
     var doubled = _([1, 2, 3]).map(function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
 
-    var ids = _.map(document.body.childNodes, function(n){ return n.id; });
+    var ids = _.map($('div.underscore-test').children(), function(n){ return n.id; });
     ok(_.include(ids, 'qunit-header'), 'can use collection methods on NodeLists');
 
     var ids = _.map(document.images, function(n){ return n.id; });
diff --git a/test/test.html b/test/test.html
index c67acf596..f8609aa26 100644
--- a/test/test.html
+++ b/test/test.html
@@ -16,26 +16,27 @@
   <script type="text/javascript" src="speed.js"></script>
 </head>
 <body>
-  <h1 id="qunit-header">Underscore Test Suite</h1>
-  <h2 id="qunit-banner"></h2>
-  <h2 id="qunit-userAgent"></h2>
-  <ol id="qunit-tests"></ol>
-  <br />
-  <h1 class="qunit-header">Underscore Speed Suite</h1>
-  <p>
-    A representative sample of the functions are benchmarked here, to provide
-    a sense of how fast they might run in different browsers.
-    Each iteration runs on an array of 1000 elements.<br /><br />
-    For example, the 'intersect' test measures the number of times you can
-    find the intersection of two thousand-element arrays in one second.
-  </p>
-  <br />
+  <div class="underscore-test">
+    <h1 id="qunit-header">Underscore Test Suite</h1>
+    <h2 id="qunit-banner"></h2>
+    <h2 id="qunit-userAgent"></h2>
+    <ol id="qunit-tests"></ol>
+    <br />
+    <h1 class="qunit-header">Underscore Speed Suite</h1>
+    <p>
+      A representative sample of the functions are benchmarked here, to provide
+      a sense of how fast they might run in different browsers.
+      Each iteration runs on an array of 1000 elements.<br /><br />
+      For example, the 'intersect' test measures the number of times you can
+      find the intersection of two thousand-element arrays in one second.
+    </p>
+    <br />
 
-  <script type="text/html" id="template">
+    <script type="text/html" id="template">
       <%
       if (data) { data += 12345; }; %>
       <li><%= data %></li>
-  </script>
-
+    </script>
+  </div>
 </body>
 </html>

From 5eaf71f1013a554b08e6b7cd540fa5be7f594835 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 12 Jul 2011 15:22:39 -0400
Subject: [PATCH 321/533] removing somewhat silly isNumber check.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 804a005e2..43502f328 100644
--- a/underscore.js
+++ b/underscore.js
@@ -72,7 +72,7 @@
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
-    } else if (_.isNumber(obj.length)) {
+    } else if (obj.length) {
       for (var i = 0, l = obj.length; i < l; i++) {
         if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
       }

From fbae682e8fa29c7e4e2fb2c74ed98e81ac11284b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 12 Jul 2011 15:23:23 -0400
Subject: [PATCH 322/533] fixing comment for #239

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 43502f328..0ae93fb4a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -66,7 +66,7 @@
   // --------------------
 
   // The cornerstone, an `each` implementation, aka `forEach`.
-  // Handles objects implementing `forEach`, arrays, and raw objects.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
     if (obj == null) return;

From 942d63129b5e7490bdcd53ae1172938ca5764ec9 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 12 Jul 2011 15:27:42 -0400
Subject: [PATCH 323/533] Fixing silly commit. Thanks @cirwin

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 0ae93fb4a..66e71fc3f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -72,7 +72,7 @@
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
-    } else if (obj.length) {
+    } else if (obj.length || obj.length === 0) {
       for (var i = 0, l = obj.length; i < l; i++) {
         if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
       }

From 0ec859a142d2eb255b561c18f9d2598c589d95e6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 12 Jul 2011 16:48:30 -0400
Subject: [PATCH 324/533] Issue #225, adding _.union, _.difference, to
 complement _.without and _.intersection.

---
 test/arrays.js | 18 ++++++++++++++----
 underscore.js  | 19 +++++++++++++++----
 2 files changed, 29 insertions(+), 8 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index e031afe9b..32dd73a55 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -65,14 +65,24 @@ $(document).ready(function() {
     equals(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
   });
 
-  test("arrays: intersect", function() {
+  test("arrays: intersection", function() {
     var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho'];
-    equals(_.intersect(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
-    equals(_(stooges).intersect(leaders).join(''), 'moe', 'can perform an OO-style intersection');
-    var result = (function(){ return _.intersect(arguments, leaders); })('moe', 'curly', 'larry');
+    equals(_.intersection(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
+    equals(_(stooges).intersection(leaders).join(''), 'moe', 'can perform an OO-style intersection');
+    var result = (function(){ return _.intersection(arguments, leaders); })('moe', 'curly', 'larry');
     equals(result.join(''), 'moe', 'works on an arguments object');
   });
 
+  test("arrays: union", function() {
+    var result = _.union([1, 2, 3], [2, 30, 1], [1, 40]);
+    equals(result.join(' '), '1 2 3 30 40', 'takes the union of a list of arrays');
+  });
+
+  test("arrays: difference", function() {
+    var result = _.difference([1, 2, 3], [2, 30, 40]);
+    equals(result.join(' '), '1 3', 'takes the difference of two arrays');
+  });
+
   test('arrays: zip', function() {
     var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true];
     var stooges = _.zip(names, ages, leaders);
diff --git a/underscore.js b/underscore.js
index 66e71fc3f..0ac287e8e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -327,8 +327,7 @@
 
   // Return a version of the array that does not contain the specified value(s).
   _.without = function(array) {
-    var values = slice.call(arguments, 1);
-    return _.filter(array, function(value){ return !_.include(values, value); });
+    return _.difference(array, slice.call(arguments, 1));
   };
 
   // Produce a duplicate-free version of the array. If the array has already
@@ -341,9 +340,15 @@
     }, []);
   };
 
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(_.flatten(arguments));
+  };
+
   // Produce an array that contains every item shared between all the
-  // passed-in arrays.
-  _.intersect = function(array) {
+  // passed-in arrays. (Aliased as "intersect" for back-compat.)
+  _.intersection = _.intersect = function(array) {
     var rest = slice.call(arguments, 1);
     return _.filter(_.uniq(array), function(item) {
       return _.every(rest, function(other) {
@@ -352,6 +357,12 @@
     });
   };
 
+  // Take the difference between one array and another.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array, other) {
+    return _.filter(array, function(value){ return !_.include(other, value); });
+  };
+
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
   _.zip = function() {

From 727db393d5ad2584d96941d8b69e0b651308b694 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 12 Jul 2011 17:01:04 -0400
Subject: [PATCH 325/533] Amending length check as discussed in 942d63

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 0ac287e8e..5757609fa 100644
--- a/underscore.js
+++ b/underscore.js
@@ -72,7 +72,7 @@
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
-    } else if (obj.length || obj.length === 0) {
+    } else if (obj.length === +obj.length) {
       for (var i = 0, l = obj.length; i < l; i++) {
         if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
       }

From 5c2c3ce464474cd0db58796c908ebc16198ab9cb Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Tue, 12 Jul 2011 19:42:36 -0600
Subject: [PATCH 326/533] Rewrite `_.isEqual` and add support for comparing
 cyclic structures.

---
 test/objects.js | 40 ++++++++++++++++++++
 underscore.js   | 97 +++++++++++++++++++++++++++++--------------------
 2 files changed, 97 insertions(+), 40 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 48971c079..f1cc7e1f6 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -82,6 +82,46 @@ $(document).ready(function() {
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
     ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
     equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, 'wrapped objects are equal');
+
+    // Objects with circular references.
+    var circularA = {'abc': null}, circularB = {'abc': null};
+    circularA.abc = circularA;
+    circularB.abc = circularB;
+    ok(_.isEqual(circularA, circularB), 'objects with a circular reference');
+    circularA.def = 1;
+    circularB.def = 1;
+    ok(_.isEqual(circularA, circularB), 'objects with identical properties and a circular reference');
+    circularA.def = 1;
+    circularB.def = 0;
+    ok(!_.isEqual(circularA, circularB), 'objects with different properties and a circular reference');
+
+    // Arrays with circular references.
+    circularA = [];
+    circularB = [];
+    circularA.push(circularA);
+    circularB.push(circularB);
+    ok(_.isEqual(circularA, circularB), 'arrays with a circular reference');
+    circularA.push('abc');
+    circularB.push('abc');
+    ok(_.isEqual(circularA, circularB), 'arrays with identical indices and a circular reference');
+    circularA.push('hello');
+    circularB.push('goodbye');
+    ok(!_.isEqual(circularA, circularB), 'arrays with different properties and a circular reference');
+
+    // Hybrid cyclic structures.
+    circularA = [{'abc': null}];
+    circularB = [{'abc': null}];
+    circularA[0].abc = circularA;
+    circularB[0].abc = circularB;
+    circularA.push(circularA);
+    circularB.push(circularB);
+    ok(_.isEqual(circularA, circularB), 'cyclic structure');
+    circularA[0].def = 1;
+    circularB[0].def = 1;
+    ok(_.isEqual(circularA, circularB), 'cyclic structure with identical properties');
+    circularA[0].def = 1;
+    circularB[0].def = 0;
+    ok(!_.isEqual(circularA, circularB), 'cyclic structure with different properties');
   });
 
   test("objects: isEmpty", function() {
diff --git a/underscore.js b/underscore.js
index 5757609fa..6bc1ed9e4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -391,7 +391,6 @@
     return -1;
   };
 
-
   // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
   _.lastIndexOf = function(array, item) {
     if (array == null) return -1;
@@ -538,7 +537,6 @@
     };
   };
 
-
   // Object Functions
   // ----------------
 
@@ -596,44 +594,63 @@
   };
 
   // Perform a deep comparison to check if two objects are equal.
-  _.isEqual = function(a, b) {
-    // Check object identity.
-    if (a === b) return true;
-    // Different types?
-    var atype = typeof(a), btype = typeof(b);
-    if (atype != btype) return false;
-    // Basic equality test (watch out for coercions).
-    if (a == b) return true;
-    // One is falsy and the other truthy.
-    if ((!a && b) || (a && !b)) return false;
-    // Unwrap any wrapped objects.
-    if (a._chain) a = a._wrapped;
-    if (b._chain) b = b._wrapped;
-    // One of them implements an isEqual()?
-    if (a.isEqual) return a.isEqual(b);
-    if (b.isEqual) return b.isEqual(a);
-    // Check dates' integer values.
-    if (_.isDate(a) && _.isDate(b)) return a.getTime() === b.getTime();
-    // Both are NaN?
-    if (_.isNaN(a) && _.isNaN(b)) return false;
-    // Compare regular expressions.
-    if (_.isRegExp(a) && _.isRegExp(b))
-      return a.source     === b.source &&
-             a.global     === b.global &&
-             a.ignoreCase === b.ignoreCase &&
-             a.multiline  === b.multiline;
-    // If a is not an object by this point, we can't handle it.
-    if (atype !== 'object') return false;
-    // Check for different array lengths before comparing contents.
-    if (a.length && (a.length !== b.length)) return false;
-    // Nothing else worked, deep compare the contents.
-    var aKeys = _.keys(a), bKeys = _.keys(b);
-    // Different object sizes?
-    if (aKeys.length != bKeys.length) return false;
-    // Recursive comparison of contents.
-    for (var key in a) if (!(key in b) || !_.isEqual(a[key], b[key])) return false;
-    return true;
-  };
+  _.isEqual = (function() {
+    function eq(a, b, stack) {
+      // Identical objects are equal.
+      if (a === b) return true;
+      // A strict comparison is necessary because `null == undefined`.
+      if (a == null) return a === b;
+      // Compare `[[Class]]` names.
+      var className = toString.call(a);
+      if (className != toString.call(b)) return false;
+      // Compare functions by reference.
+      if (_.isFunction(a)) return _.isFunction(b) && a == b;
+      // Compare strings, numbers, dates, and booleans by value.
+      if (_.isString(a)) return _.isString(b) && String(a) == String(b);
+      if (_.isNumber(a)) return _.isNumber(b) && +a == +b;
+      if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
+      if (_.isBoolean(a)) return _.isBoolean(b) && +a == +b;
+      // Compare RegExps by their source patterns and flags.
+      if (_.isRegExp(a)) return _.isRegExp(b) && a.source == b.source &&
+                                a.global == b.global &&
+                                a.multiline == b.multiline &&
+                                a.ignoreCase == b.ignoreCase;
+      // Recursively compare objects and arrays.
+      if (typeof a != 'object') return false;
+      // Unwrap any wrapped objects.
+      if (a._chain) a = a._wrapped;
+      if (b._chain) b = b._wrapped;
+      // Invoke a custom `isEqual` method if one is provided.
+      if (a.isEqual) return a.isEqual(b);
+      if (b.isEqual) return b.isEqual(a);
+      // Compare array lengths to determine if a deep comparison is necessary.
+      if (a.length && (a.length !== b.length)) return false;
+      // Assume equality for cyclic structures.
+      var length = stack.length;
+      while (length--) {
+        if (stack[length] == a) return true;
+      }
+      // Add the object to the stack of traversed objects.
+      stack.push(a);
+      var result = true;
+      // Deep comparse the contents.
+      var aKeys = _.keys(a), bKeys = _.keys(b);
+      // Ensure that both objects contain the same number of properties.
+      if (result = aKeys.length == bKeys.length) {
+        // Recursively compare properties.
+        for (var key in a) {
+          if (!(result = key in b && eq(a[key], b[key], stack))) break;
+        }
+      }
+      // Remove the object from the stack of traversed objects.
+      stack.pop();
+      return result;
+    }
+    // Expose the recursive `isEqual` method.
+    return function(a, b) {
+      return eq(a, b, []);
+    };
+  })();
 
   // Is a given array or object empty?
   _.isEmpty = function(obj) {

From e21b346cbf265278145c253d4f5c784858ccfc3e Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Tue, 12 Jul 2011 19:54:56 -0600
Subject: [PATCH 327/533] `_.isEqual`: Compare object types rather than
 `[[Class]]` names.

---
 underscore.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index 6bc1ed9e4..0611f8e1d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -600,9 +600,9 @@
       if (a === b) return true;
       // A strict comparison is necessary because `null == undefined`.
       if (a == null) return a === b;
-      // Compare `[[Class]]` names.
-      var className = toString.call(a);
-      if (className != toString.call(b)) return false;
+      // Compare object types.
+      var typeA = typeof a;
+      if (typeA != typeof b) return false;
       // Compare functions by reference.
       if (_.isFunction(a)) return _.isFunction(b) && a == b;
       // Compare strings, numbers, dates, and booleans by value.
@@ -616,7 +616,7 @@
                                 a.multiline == b.multiline &&
                                 a.ignoreCase == b.ignoreCase;
       // Recursively compare objects and arrays.
-      if (typeof a != 'object') return false;
+      if (typeA != 'object') return false;
       // Unwrap any wrapped objects.
       if (a._chain) a = a._wrapped;
       if (b._chain) b = b._wrapped;

From 9d0b43221acd394d201d44a74d005e1d471b6bce Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Tue, 12 Jul 2011 20:22:05 -0600
Subject: [PATCH 328/533] `_.isEqual`: Move the internal `eq` method into the
 main closure. Remove strict type checking.

---
 underscore.js | 113 +++++++++++++++++++++++++-------------------------
 1 file changed, 56 insertions(+), 57 deletions(-)

diff --git a/underscore.js b/underscore.js
index 0611f8e1d..f636d0444 100644
--- a/underscore.js
+++ b/underscore.js
@@ -593,64 +593,63 @@
     return obj;
   };
 
-  // Perform a deep comparison to check if two objects are equal.
-  _.isEqual = (function() {
-    function eq(a, b, stack) {
-      // Identical objects are equal.
-      if (a === b) return true;
-      // A strict comparison is necessary because `null == undefined`.
-      if (a == null) return a === b;
-      // Compare object types.
-      var typeA = typeof a;
-      if (typeA != typeof b) return false;
-      // Compare functions by reference.
-      if (_.isFunction(a)) return _.isFunction(b) && a == b;
-      // Compare strings, numbers, dates, and booleans by value.
-      if (_.isString(a)) return _.isString(b) && String(a) == String(b);
-      if (_.isNumber(a)) return _.isNumber(b) && +a == +b;
-      if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
-      if (_.isBoolean(a)) return _.isBoolean(b) && +a == +b;
-      // Compare RegExps by their source patterns and flags.
-      if (_.isRegExp(a)) return _.isRegExp(b) && a.source == b.source &&
-                                a.global == b.global &&
-                                a.multiline == b.multiline &&
-                                a.ignoreCase == b.ignoreCase;
-      // Recursively compare objects and arrays.
-      if (typeA != 'object') return false;
-      // Unwrap any wrapped objects.
-      if (a._chain) a = a._wrapped;
-      if (b._chain) b = b._wrapped;
-      // Invoke a custom `isEqual` method if one is provided.
-      if (a.isEqual) return a.isEqual(b);
-      if (b.isEqual) return b.isEqual(a);
-      // Compare array lengths to determine if a deep comparison is necessary.
-      if (a.length && (a.length !== b.length)) return false;
-      // Assume equality for cyclic structures.
-      var length = stack.length;
-      while (length--) {
-        if (stack[length] == a) return true;
-      }
-      // Add the object to the stack of traversed objects.
-      stack.push(a);
-      var result = true;
-      // Deep comparse the contents.
-      var aKeys = _.keys(a), bKeys = _.keys(b);
-      // Ensure that both objects contain the same number of properties.
-      if (result = aKeys.length == bKeys.length) {
-        // Recursively compare properties.
-        for (var key in a) {
-          if (!(result = key in b && eq(a[key], b[key], stack))) break;
-        }
-      }
-      // Remove the object from the stack of traversed objects.
-      stack.pop();
-      return result;
+  // Internal recursive comparison function.
+  function eq(a, b, stack) {
+    // Identical objects are equal.
+    if (a === b) return true;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null) return a === b;
+    // Compare object types.
+    var typeA = typeof a;
+    if (typeA != typeof b) return false;
+    // The type comparison above prevents unwanted type coercion.
+    if (a == b) return true;
+    // Ensure that both values are truthy or falsy.
+    if ((!a && b) || (a && !b)) return false;
+    // `NaN` values are toxic.
+    if (_.isNaN(a) || _.isNaN(b)) return false;
+    if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
+    // Compare RegExps by their source patterns and flags.
+    if (_.isRegExp(a)) return _.isRegExp(b) && a.source == b.source &&
+                              a.global == b.global &&
+                              a.multiline == b.multiline &&
+                              a.ignoreCase == b.ignoreCase;
+    // Recursively compare objects and arrays.
+    if (typeA != 'object') return false;
+    // Unwrap any wrapped objects.
+    if (a._chain) a = a._wrapped;
+    if (b._chain) b = b._wrapped;
+    // Invoke a custom `isEqual` method if one is provided.
+    if (a.isEqual) return a.isEqual(b);
+    if (b.isEqual) return b.isEqual(a);
+    // Compare array lengths to determine if a deep comparison is necessary.
+    if (a.length && (a.length !== b.length)) return false;
+    // Assume equality for cyclic structures.
+    var length = stack.length;
+    while (length--) {
+      if (stack[length] == a) return true;
     }
-    // Expose the recursive `isEqual` method.
-    return function(a, b) {
-      return eq(a, b, []);
-    };
-  })();
+    // Add the object to the stack of traversed objects.
+    stack.push(a);
+    var result = true;
+    // Deep comparse the contents.
+    var aKeys = _.keys(a), bKeys = _.keys(b);
+    // Ensure that both objects contain the same number of properties.
+    if (result = aKeys.length == bKeys.length) {
+      // Recursively compare properties.
+      for (var key in a) {
+        if (!(result = key in b && eq(a[key], b[key], stack))) break;
+      }
+    }
+    // Remove the object from the stack of traversed objects.
+    stack.pop();
+    return result;
+  }
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, []);
+  };
 
   // Is a given array or object empty?
   _.isEmpty = function(obj) {

From cf812e77bc271dab9f6987466dc0e84ff88b5198 Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Tue, 12 Jul 2011 22:16:12 -0600
Subject: [PATCH 329/533] `_.isEqual`: Ensure that `0` and `-0` are not
 equivalent. `NaN` values should be equal.

---
 test/objects.js |  2 +-
 underscore.js   | 12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index f1cc7e1f6..c32a13ad7 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -73,7 +73,7 @@ $(document).ready(function() {
     ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
     ok(NaN != NaN, 'NaN is not equal to NaN (native equality)');
     ok(NaN !== NaN, 'NaN is not equal to NaN (native identity)');
-    ok(!_.isEqual(NaN, NaN), 'NaN is not equal to NaN');
+    ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
diff --git a/underscore.js b/underscore.js
index f636d0444..ca9133f04 100644
--- a/underscore.js
+++ b/underscore.js
@@ -596,7 +596,7 @@
   // Internal recursive comparison function.
   function eq(a, b, stack) {
     // Identical objects are equal.
-    if (a === b) return true;
+    if (a === b) return a != 0 || 1 / a == 1 / b;
     // A strict comparison is necessary because `null == undefined`.
     if (a == null) return a === b;
     // Compare object types.
@@ -606,8 +606,8 @@
     if (a == b) return true;
     // Ensure that both values are truthy or falsy.
     if ((!a && b) || (a && !b)) return false;
-    // `NaN` values are toxic.
-    if (_.isNaN(a) || _.isNaN(b)) return false;
+    // `NaN` values are equal.
+    if (_.isNaN(a)) return _.isNaN(b);
     if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
     // Compare RegExps by their source patterns and flags.
     if (_.isRegExp(a)) return _.isRegExp(b) && a.source == b.source &&
@@ -631,11 +631,11 @@
     }
     // Add the object to the stack of traversed objects.
     stack.push(a);
-    var result = true;
-    // Deep comparse the contents.
+    // Deep compare the contents.
     var aKeys = _.keys(a), bKeys = _.keys(b);
     // Ensure that both objects contain the same number of properties.
-    if (result = aKeys.length == bKeys.length) {
+    var result = aKeys.length == bKeys.length;
+    if (result) {
       // Recursively compare properties.
       for (var key in a) {
         if (!(result = key in b && eq(a[key], b[key], stack))) break;

From b6a02fa6bb08545bd21c24f823f4c541371689ed Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Tue, 12 Jul 2011 22:37:09 -0600
Subject: [PATCH 330/533] `_.isEqual`: Use a strict comparison to avoid an
 unnecessary division for `false` values.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index ca9133f04..1a68a9784 100644
--- a/underscore.js
+++ b/underscore.js
@@ -596,7 +596,7 @@
   // Internal recursive comparison function.
   function eq(a, b, stack) {
     // Identical objects are equal.
-    if (a === b) return a != 0 || 1 / a == 1 / b;
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
     // A strict comparison is necessary because `null == undefined`.
     if (a == null) return a === b;
     // Compare object types.

From cd236d4c47d296d20ae606e8a33ccc25ccd1188e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 11:09:51 -0400
Subject: [PATCH 331/533] Issue #243. _.functions now also returns the names of
 function defined in the prototype chain.

---
 test/objects.js | 4 ++++
 underscore.js   | 6 +++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 48971c079..78add1fed 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -22,6 +22,10 @@ $(document).ready(function() {
   test("objects: functions", function() {
     var obj = {a : 'dash', b : _.map, c : (/yo/), d : _.reduce};
     ok(_.isEqual(['b', 'd'], _.functions(obj)), 'can grab the function names of any passed-in object');
+
+    var Animal = function(){};
+    Animal.prototype.run = function(){};
+    equals(_.functions(new Animal).join(''), 'run', 'also looks up functions on the prototype');
   });
 
   test("objects: extend", function() {
diff --git a/underscore.js b/underscore.js
index 5757609fa..9857159eb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -559,7 +559,11 @@
   // Return a sorted list of the function names available on the object.
   // Aliased as `methods`
   _.functions = _.methods = function(obj) {
-    return _.filter(_.keys(obj), function(key){ return _.isFunction(obj[key]); }).sort();
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
   };
 
   // Extend a given object with all the properties in passed-in object(s).

From 174c897fced7bdfd4841103dcb53c468c79ffe37 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 12:21:08 -0400
Subject: [PATCH 332/533] Issue #103, change initial value detection for
 reduce()

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 9857159eb..bf004d3ca 100644
--- a/underscore.js
+++ b/underscore.js
@@ -100,7 +100,7 @@
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
-    var initial = memo !== void 0;
+    var initial = arguments.length > 2;
     if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);

From 5edc3761c683e0f64688fa9f8dc3a156702b7241 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 12:27:11 -0400
Subject: [PATCH 333/533] Issue #209, fix reduce without a memo for arrays that
 are sparse at the beginning.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index bf004d3ca..8a2a65622 100644
--- a/underscore.js
+++ b/underscore.js
@@ -107,7 +107,7 @@
       return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
     }
     each(obj, function(value, index, list) {
-      if (!initial && index === 0) {
+      if (!initial) {
         memo = value;
         initial = true;
       } else {

From 7573ac775110f333a344d41f3d6a485c90207261 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 12:36:27 -0400
Subject: [PATCH 334/533] Unit tests for sparse arrays.

---
 test/collections.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/collections.js b/test/collections.js
index 9a4d49ec4..a0ac266ac 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -77,6 +77,15 @@ $(document).ready(function() {
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
 
     ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+
+    // Sparse arrays:
+    equals(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+
+    var sparseArray  = [];
+    sparseArray[100] = 10;
+    sparseArray[200] = 20;
+
+    equals(_.reduce(sparseArray, function(a, b){ return a + b }), 30, 'initially-sparse arrays with no memo');
   });
 
   test('collections: reduceRight', function() {

From 347d7297f33107a25e892bd2e67b18d0d33c2454 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 12:41:17 -0400
Subject: [PATCH 335/533] function formatting.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 9b550da51..f1206a030 100644
--- a/underscore.js
+++ b/underscore.js
@@ -181,12 +181,12 @@
   // Determine if at least one element in the object matches a truth test.
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
-  var any = _.some = _.any = function (obj, iterator, context) {
+  var any = _.some = _.any = function(obj, iterator, context) {
     iterator = iterator || _.identity;
     var result = false;
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
-    each(obj, function (value, index, list) {
+    each(obj, function(value, index, list) {
       if (result |= iterator.call(context, value, index, list)) return breaker;
     });
     return !!result;

From 365eea6aa7570b738850a1652fdd51b13208fef9 Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Wed, 13 Jul 2011 10:48:16 -0600
Subject: [PATCH 336/533] `_.isEqual`: Streamline the deep comparison algorithm
 and remove the dependency on `_.keys`.

---
 test/objects.js |  6 ++++++
 underscore.js   | 15 ++++++++++-----
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index c32a13ad7..08206b913 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -65,6 +65,11 @@ $(document).ready(function() {
   });
 
   test("objects: isEqual", function() {
+    function Foo(){ this.own = 'a'; }
+    function Bar(){ this.own = 'a'; }
+    Foo.prototype.inherited = 1;
+    Bar.prototype.inherited = 2;
+
     var moe   = {name : 'moe', lucky : [13, 27, 34]};
     var clone = {name : 'moe', lucky : [13, 27, 34]};
     ok(moe != clone, 'basic equality between objects is false');
@@ -80,6 +85,7 @@ $(document).ready(function() {
     ok(_.isEqual({isEqual: function () { return true; }}, {}), 'first object implements `isEqual`');
     ok(_.isEqual({}, {isEqual: function () { return true; }}), 'second object implements `isEqual`');
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
+    ok(!_.isEqual(new Foo, new Bar), 'objects with different inherited properties are not equal');
     ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
     equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, 'wrapped objects are equal');
 
diff --git a/underscore.js b/underscore.js
index 1a68a9784..14d5c01ed 100644
--- a/underscore.js
+++ b/underscore.js
@@ -632,14 +632,19 @@
     // Add the object to the stack of traversed objects.
     stack.push(a);
     // Deep compare the contents.
-    var aKeys = _.keys(a), bKeys = _.keys(b);
+    var size = 0, sizeRight = 0, result = true, key;
+    for (key in a) {
+      // Count the expected number of properties.
+      size++;
+      // Deep compare each member.
+      if (!(result = key in b && eq(a[key], b[key], stack))) break;
+    }
     // Ensure that both objects contain the same number of properties.
-    var result = aKeys.length == bKeys.length;
     if (result) {
-      // Recursively compare properties.
-      for (var key in a) {
-        if (!(result = key in b && eq(a[key], b[key], stack))) break;
+      for (key in b) {
+        if (++sizeRight > size) break;
       }
+      result = size == sizeRight;
     }
     // Remove the object from the stack of traversed objects.
     stack.pop();

From 19beb29283cf5cdcf1c4f4ff2140378a01d31ceb Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 12:57:51 -0400
Subject: [PATCH 337/533] Revert "Issue #103, change initial value detection
 for reduce()"

This reverts commit 174c897fced7bdfd4841103dcb53c468c79ffe37.
---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index f1206a030..41cd7ce2a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -100,7 +100,7 @@
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
-    var initial = arguments.length > 2;
+    var initial = memo !== void 0;
     if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);

From 7eb7b08f7127d8fd4239312ae7c23b675484e8d3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 12:58:36 -0400
Subject: [PATCH 338/533] reverting a non-important change that broke
 reduceRight in IE.

---
 test/collections.js | 2 --
 1 file changed, 2 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 719e6a1aa..005ee169e 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -79,8 +79,6 @@ $(document).ready(function() {
     ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
 
     // Sparse arrays:
-    equals(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
-
     var sparseArray  = [];
     sparseArray[100] = 10;
     sparseArray[200] = 20;

From 47fb3d7f9c2e9e743ce05fb073105e15ca15bfc3 Mon Sep 17 00:00:00 2001
From: limeblack <limeblack7@gmail.com>
Date: Wed, 13 Jul 2011 11:19:34 -0700
Subject: [PATCH 339/533] Edited underscore.js via GitHub

---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 41cd7ce2a..ed09b2f68 100644
--- a/underscore.js
+++ b/underscore.js
@@ -387,7 +387,8 @@
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
+    var o,i=0;
+    while( o = array[i++] ) if (o === item) return i-1;
     return -1;
   };
 

From f099038a9d85116ea71c5c8914eb7eaa21a56e80 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 15:12:50 -0400
Subject: [PATCH 340/533] merging in faster indexOf patch ... arguably faster
 than the native implementation, but oh well. #245

---
 underscore.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/underscore.js b/underscore.js
index ed09b2f68..a73ab93ba 100644
--- a/underscore.js
+++ b/underscore.js
@@ -381,14 +381,13 @@
   // for **isSorted** to use binary search.
   _.indexOf = function(array, item, isSorted) {
     if (array == null) return -1;
-    var i, l;
+    var obj, i = 0;
     if (isSorted) {
       i = _.sortedIndex(array, item);
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    var o,i=0;
-    while( o = array[i++] ) if (o === item) return i-1;
+    while (obj = array[i++]) if (obj === item) return i - 1;
     return -1;
   };
 

From a6cba6885e8494e205cf0eaa1c788033ad02e1d8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 15:57:42 -0400
Subject: [PATCH 341/533] Revert "merging in faster indexOf patch ... arguably
 faster than the native implementation, but oh well. #245"

This reverts commit f099038a9d85116ea71c5c8914eb7eaa21a56e80.
---
 underscore.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index a73ab93ba..ed09b2f68 100644
--- a/underscore.js
+++ b/underscore.js
@@ -381,13 +381,14 @@
   // for **isSorted** to use binary search.
   _.indexOf = function(array, item, isSorted) {
     if (array == null) return -1;
-    var obj, i = 0;
+    var i, l;
     if (isSorted) {
       i = _.sortedIndex(array, item);
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    while (obj = array[i++]) if (obj === item) return i - 1;
+    var o,i=0;
+    while( o = array[i++] ) if (o === item) return i-1;
     return -1;
   };
 

From c1a556216ed41b1adaeb65dc10efbf7a21569018 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 15:57:52 -0400
Subject: [PATCH 342/533] Revert "Edited underscore.js via GitHub"

This reverts commit 47fb3d7f9c2e9e743ce05fb073105e15ca15bfc3.
---
 underscore.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index ed09b2f68..41cd7ce2a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -387,8 +387,7 @@
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    var o,i=0;
-    while( o = array[i++] ) if (o === item) return i-1;
+    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
     return -1;
   };
 

From a12d0035cb33e01c6a4eb9f8507c6f4f6cffb777 Mon Sep 17 00:00:00 2001
From: Kit Goncharov <ksgoncharov@gmail.com>
Date: Wed, 13 Jul 2011 14:24:28 -0600
Subject: [PATCH 343/533] `_.isEqual`: Ensure commutative equality for dates
 and RegExps.

---
 test/objects.js |  4 ++++
 underscore.js   | 27 ++++++++++++++++-----------
 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 08206b913..0b1685a88 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -79,9 +79,13 @@ $(document).ready(function() {
     ok(NaN != NaN, 'NaN is not equal to NaN (native equality)');
     ok(NaN !== NaN, 'NaN is not equal to NaN (native identity)');
     ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
+    ok(!_.isEqual(5, NaN), '`5` is not equal to `NaN`');
+    ok(!_.isEqual(false, NaN), '`false` is not equal to `NaN`');
     ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
     ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
+    ok(!_.isEqual({source: '(?:)', global: true, multiline: true, ignoreCase: true}, /(?:)/gim), 'RegExp-like objects and RegExps are not equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
+    ok(!_.isEqual(undefined, null), '`undefined` is not equal to `null`');
     ok(_.isEqual({isEqual: function () { return true; }}, {}), 'first object implements `isEqual`');
     ok(_.isEqual({}, {isEqual: function () { return true; }}), 'second object implements `isEqual`');
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
diff --git a/underscore.js b/underscore.js
index 14d5c01ed..9d95ebfbc 100644
--- a/underscore.js
+++ b/underscore.js
@@ -595,7 +595,8 @@
 
   // Internal recursive comparison function.
   function eq(a, b, stack) {
-    // Identical objects are equal.
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
     if (a === b) return a !== 0 || 1 / a == 1 / b;
     // A strict comparison is necessary because `null == undefined`.
     if (a == null) return a === b;
@@ -604,17 +605,21 @@
     if (typeA != typeof b) return false;
     // The type comparison above prevents unwanted type coercion.
     if (a == b) return true;
-    // Ensure that both values are truthy or falsy.
+    // Optimization; ensure that both values are truthy or falsy.
     if ((!a && b) || (a && !b)) return false;
     // `NaN` values are equal.
     if (_.isNaN(a)) return _.isNaN(b);
-    if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
+    // Compare dates by their millisecond values.
+    var isDateA = _.isDate(a), isDateB = _.isDate(b);
+    if (isDateA || isDateB) return isDateA && isDateB && a.getTime() == b.getTime();
     // Compare RegExps by their source patterns and flags.
-    if (_.isRegExp(a)) return _.isRegExp(b) && a.source == b.source &&
-                              a.global == b.global &&
-                              a.multiline == b.multiline &&
-                              a.ignoreCase == b.ignoreCase;
-    // Recursively compare objects and arrays.
+    var isRegExpA = _.isRegExp(a), isRegExpB = _.isRegExp(b);
+    if (isRegExpA || isRegExpB) return isRegExpA && isRegExpB &&
+                                       a.source == b.source &&
+                                       a.global == b.global &&
+                                       a.multiline == b.multiline &&
+                                       a.ignoreCase == b.ignoreCase;
+    // Ensure that both values are objects.
     if (typeA != 'object') return false;
     // Unwrap any wrapped objects.
     if (a._chain) a = a._wrapped;
@@ -629,9 +634,9 @@
     while (length--) {
       if (stack[length] == a) return true;
     }
-    // Add the object to the stack of traversed objects.
+    // Add the first object to the stack of traversed objects.
     stack.push(a);
-    // Deep compare the contents.
+    // Deep compare the two objects.
     var size = 0, sizeRight = 0, result = true, key;
     for (key in a) {
       // Count the expected number of properties.
@@ -646,7 +651,7 @@
       }
       result = size == sizeRight;
     }
-    // Remove the object from the stack of traversed objects.
+    // Remove the first object from the stack of traversed objects.
     stack.pop();
     return result;
   }

From 39b07d7b2cdbcf2f37b1239772ba58617f7c3650 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 17:02:12 -0400
Subject: [PATCH 344/533] Underscore.js 1.1.7

---
 docs/docco.css       |   2 +-
 docs/underscore.html | 210 +++++++++++++++++++++++--------------------
 index.html           |  66 ++++++++++----
 package.json         |   2 +-
 underscore-min.js    |  35 ++++----
 underscore.js        |   4 +-
 6 files changed, 186 insertions(+), 133 deletions(-)

diff --git a/docs/docco.css b/docs/docco.css
index 20f2753d4..5aa0a8d73 100644
--- a/docs/docco.css
+++ b/docs/docco.css
@@ -115,7 +115,7 @@ table td {
   }
     pre, tt, code {
       font-size: 12px; line-height: 18px;
-      font-family: Menlo, Monaco, Consolas, "Lucida Console", monospace;
+      font-family: Monaco, Consolas, "Lucida Console", monospace;
       margin: 0; padding: 0;
     }
 
diff --git a/docs/underscore.html b/docs/underscore.html
index 4294e7be1..fdcf8166c 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.6
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.7
 (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -26,17 +26,16 @@ for the old <code>require()</code> API. If we're not in CommonJS, add <code>_</c
 global object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">module</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
-    <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.6&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
-Handles objects implementing <code>forEach</code>, arrays, and raw objects.
+  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.7&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeForEach</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">===</span> <span class="nx">nativeForEach</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">obj</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-    <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="p">{</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">i</span> <span class="k">in</span> <span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">i</span><span class="p">],</span> <span class="nx">i</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
       <span class="p">}</span>
     <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
@@ -45,7 +44,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if avai
         <span class="p">}</span>
       <span class="p">}</span>
     <span class="p">}</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
@@ -54,7 +53,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
@@ -63,7 +62,7 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
       <span class="k">return</span> <span class="nx">initial</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span> <span class="o">&amp;&amp;</span> <span class="nx">index</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">memo</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
         <span class="nx">initial</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
       <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
@@ -72,7 +71,7 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
     <span class="p">});</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s2">&quot;Reduce of empty array with no initial value&quot;</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
@@ -81,7 +80,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
     <span class="p">}</span>
     <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
@@ -90,7 +89,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
 Aliased as <code>select</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
@@ -100,14 +99,14 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
@@ -117,18 +116,18 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
+    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">|=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
-    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
+    <span class="k">return</span> <span class="o">!!</span><span class="nx">result</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
 Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
@@ -137,14 +136,14 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">call</span> <span class="o">?</span> <span class="nx">method</span> <span class="o">||</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -152,7 +151,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -160,7 +159,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -170,7 +169,14 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Groups the object's values by a criterion produced by an iterator</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">groupBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{};</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">);</span>
+      <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">||</span> <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">[])).</span><span class="nx">push</span><span class="p">(</span><span class="nx">value</span><span class="p">);</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -179,59 +185,64 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">iterable</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
 with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
 check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">values</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">values</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.
 Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
-passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
+the passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">union</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
+passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersection</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">every</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Take the difference between one array and another.
+Only the elements present in just the first array will remain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.
@@ -246,13 +257,13 @@ for <strong>isSorted</strong> to use binary search.</p>             </td>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
@@ -271,7 +282,7 @@ the native Python <code>range()</code> function. See
     <span class="p">}</span>
 
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.
 We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
@@ -280,27 +291,27 @@ We check for <code>func.bind</code> first, to fail fast when <code>func</code> i
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Internal function used to implement <code>_.throttle</code> and <code>_.debounce</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">limit</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="nx">debounce</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Internal function used to implement <code>_.throttle</code> and <code>_.debounce</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">limit</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="nx">debounce</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">timeout</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">,</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
@@ -311,14 +322,14 @@ cleared.</p>             </td>             <td class="code">               <div
       <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span><span class="p">)</span> <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span> <span class="o">||</span> <span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
 during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">false</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
 be triggered. The function will be called after it stops being called for
 N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
 often you call it. Useful for lazy initialization.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">once</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">ran</span> <span class="o">=</span> <span class="kc">false</span><span class="p">,</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -326,120 +337,127 @@ often you call it. Useful for lazy initialization.</p>             </td>
       <span class="nx">ran</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
-      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span><span class="o">=</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span><span class="o">-</span><span class="mi">1</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">funcs</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">)];</span>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">key</span><span class="p">){</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]);</span> <span class="p">}).</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">names</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="nx">names</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">key</span><span class="p">);</span>
+    <span class="p">}</span>
+    <span class="k">return</span> <span class="nx">names</span><span class="p">.</span><span class="nx">sort</span><span class="p">();</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
       <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
 that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -460,31 +478,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 8e73aba63..0641e9059 100644
--- a/index.html
+++ b/index.html
@@ -118,11 +118,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.6)</a></td>
-        <td><i>27kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.1.7)</a></td>
+        <td><i>28kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.6)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.1.7)</a></td>
         <td><i>3kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -149,8 +149,9 @@
       <b>Arrays</b>
       <br />
       <span class="methods"><a href="#first">first</a>, <a href="#rest">rest</a>, <a href="#last">last</a>,
-      <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, <a href="#uniq">uniq</a>,
-      <a href="#intersect">intersect</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a>,
+      <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, 
+      <a href="#union">union</a>, <a href="#intersection">intersection</a>, <a href="#difference">difference</a>, 
+      <a href="#uniq">uniq</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a>,
       <a href="#lastIndexOf">lastIndexOf</a>, <a href="#range">range</a></span>
     </p>
 
@@ -555,6 +556,39 @@ _.flatten([1, [2], [3, [[[4]]]]]);
       <pre>
 _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
 =&gt; [2, 3, 4]
+</pre>
+
+      <p id="union">
+        <b class="header">union</b><code>_.union(*arrays)</code>
+        <br />
+        Computes the union of the passed-in <b>arrays</b>: the list of unique items,
+        in order, that are present in one or more of the <b>arrays</b>.
+      </p>
+      <pre>
+_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+=&gt; [1, 2, 3, 101, 10]
+</pre>
+
+      <p id="intersection">
+        <b class="header">intersection</b><code>_.intersection(*arrays)</code>
+        <br />
+        Computes the list of values that are the intersection of all the <b>arrays</b>.
+        Each value in the result is present in each of the <b>arrays</b>.
+      </p>
+      <pre>
+_.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+=&gt; [1, 2]
+</pre>
+
+      <p id="difference">
+        <b class="header">difference</b><code>_.difference(array, other)</code>
+        <br />
+        Similar to <b>without</b>, but returns the values from <b>array</b> that
+        are not present in <b>other</b>.
+      </p>
+      <pre>
+_.difference([1, 2, 3, 4, 5], [5, 2, 10]);
+=&gt; [1, 3, 4]
 </pre>
 
       <p id="uniq">
@@ -568,17 +602,6 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
       <pre>
 _.uniq([1, 2, 1, 3, 1, 4]);
 =&gt; [1, 2, 3, 4]
-</pre>
-
-      <p id="intersect">
-        <b class="header">intersect</b><code>_.intersect(*arrays)</code>
-        <br />
-        Computes the list of values that are the intersection of all the <b>arrays</b>.
-        Each value in the result is present in each of the <b>arrays</b>.
-      </p>
-      <pre>
-_.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
-=&gt; [1, 2]
 </pre>
 
       <p id="zip">
@@ -1257,6 +1280,17 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.1.7</b> &mdash; <small><i>July 13, 2011</i></small><br />
+        Added <tt>_.groupBy</tt>, which aggregates a collection into groups of like items.
+        Added <tt>_.untion</tt> and <tt>_.difference</tt>, to complement the 
+        (re-named) <tt>_.intersection</tt>.
+        Various improvements for support of sparse arrays.
+        <tt>_.toArray</tt> now returns a clone, if directly passed an array.
+        <tt>_.functions</tt> now also returns the names of functions that are present
+        in the prototype chain.
+      </p>
+            
       <p>
         <b class="header">1.1.6</b> &mdash; <small><i>April 18, 2011</i></small><br />
         Added <tt>_.after</tt>, which will return a function that only runs after
diff --git a/package.json b/package.json
index 86c918592..08396c4d9 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.1.6"
+  "version"       : "1.1.7"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 54bd0649f..5983694cf 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,26 +1,27 @@
-// Underscore.js 1.1.6
+// Underscore.js 1.1.7
 // (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
-(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.6";var h=b.each=b.forEach=function(a,c,d){if(a!=null)if(s&&a.forEach===s)a.forEach(c,d);else if(b.isNumber(a.length))for(var e=
-0,k=a.length;e<k;e++){if(e in a&&c.call(d,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(d,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);h(a,function(a,g,G){e[e.length]=c.call(b,a,g,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);h(a,function(a,b,f){!k&&b===0?(d=a,k=!0):d=c.call(e,d,a,b,f)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
+(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.7";var h=b.each=b.forEach=function(a,c,b){if(a!=null)if(s&&a.forEach===s)a.forEach(c,b);else if(a.length===
++a.length)for(var e=0,k=a.length;e<k;e++){if(e in a&&c.call(b,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(b,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);h(a,function(a,g,G){e[e.length]=c.call(b,a,g,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);h(a,function(a,b,f){k?d=c.call(e,d,a,b,f):(d=a,k=!0)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
 return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,g,f){if(c.call(b,a,g,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);h(a,function(a,g,f){c.call(b,a,g,f)&&(e[e.length]=a)});return e};
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+if(b.isRegExp(a)&&b.isRegExp(c))return a.source===c.source&&a.global===c.global&&a.ignoreCase===c.ignoreCase&&a.multiline===c.multiline;if(d!=="object")return!1;if(a.length&&a.length!==c.length)return!1;d=b.keys(a);var e=b.keys(c);if(d.length!=e.length)return!1;for(var f in a)if(!(f in c)||!b.isEqual(a[f],c[f]))return!1;return!0};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(l.call(a,c))return!1;return!0};b.isElement=function(a){return!!(a&&a.nodeType==
+1)};b.isArray=n||function(a){return E.call(a)==="[object Array]"};b.isObject=function(a){return a===Object(a)};b.isArguments=function(a){return!(!a||!l.call(a,"callee"))};b.isFunction=function(a){return!(!a||!a.constructor||!a.call||!a.apply)};b.isString=function(a){return!!(a===""||a&&a.charCodeAt&&a.substr)};b.isNumber=function(a){return!!(a===0||a&&a.toExponential&&a.toFixed)};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===!0||a===!1};b.isDate=function(a){return!(!a||!a.getTimezoneOffset||
+!a.setUTCFullYear)};b.isRegExp=function(a){return!(!a||!a.test||!a.exec||!(a.ignoreCase||a.ignoreCase===!1))};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){p._=C;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.mixin=function(a){h(b.functions(a),function(c){H(c,b[c]=a[c])})};var I=0;b.uniqueId=function(a){var b=I++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g};
+b.template=function(a,c){var d=b.templateSettings;d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');";d=new Function("obj",d);return c?d(c):d};
+var j=function(a){this._wrapped=a};b.prototype=j.prototype;var r=function(a,c){return c?b(a).chain():a},H=function(a,c){j.prototype[a]=function(){var a=f.call(arguments);D.call(a,this._wrapped);return r(c.apply(b,a),this._chain)}};b.mixin(b);h(["pop","push","reverse","shift","sort","splice","unshift"],function(a){var b=i[a];j.prototype[a]=function(){b.apply(this._wrapped,arguments);return r(this._wrapped,this._chain)}});h(["concat","join","slice"],function(a){var b=i[a];j.prototype[a]=function(){return r(b.apply(this._wrapped,
+arguments),this._chain)}});j.prototype.chain=function(){this._chain=!0;return this};j.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 41cd7ce2a..4f5601325 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.1.6
+//     Underscore.js 1.1.7
 //     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -60,7 +60,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.1.6';
+  _.VERSION = '1.1.7';
 
   // Collection Functions
   // --------------------

From 9e8fc8304046bdaa46d597e4260133464ebab19f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 13 Jul 2011 17:05:20 -0400
Subject: [PATCH 345/533] fixing silly typo.

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 0641e9059..de196cdea 100644
--- a/index.html
+++ b/index.html
@@ -1283,7 +1283,7 @@ _([1, 2, 3]).value();
       <p>
         <b class="header">1.1.7</b> &mdash; <small><i>July 13, 2011</i></small><br />
         Added <tt>_.groupBy</tt>, which aggregates a collection into groups of like items.
-        Added <tt>_.untion</tt> and <tt>_.difference</tt>, to complement the 
+        Added <tt>_.union</tt> and <tt>_.difference</tt>, to complement the 
         (re-named) <tt>_.intersection</tt>.
         Various improvements for support of sparse arrays.
         <tt>_.toArray</tt> now returns a clone, if directly passed an array.

From c7c57ca6ff0a7d175913e4c040450f5a15a9bdaa Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Fri, 15 Jul 2011 18:15:10 -0400
Subject: [PATCH 346/533] _.isEqual improvements

---
 test/objects.js |  9 +++++++--
 underscore.js   | 22 ++++++++++------------
 2 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 0b1685a88..4234f0fad 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -72,6 +72,8 @@ $(document).ready(function() {
 
     var moe   = {name : 'moe', lucky : [13, 27, 34]};
     var clone = {name : 'moe', lucky : [13, 27, 34]};
+	var isEqualObj = {isEqual: function (o) { return o.isEqual == this.isEqual; }, unique: {}};
+	var isEqualObjClone = {isEqual: isEqualObj.isEqual, unique: {}};
     ok(moe != clone, 'basic equality between objects is false');
     ok(_.isEqual(moe, clone), 'deep equality is true');
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
@@ -86,8 +88,11 @@ $(document).ready(function() {
     ok(!_.isEqual({source: '(?:)', global: true, multiline: true, ignoreCase: true}, /(?:)/gim), 'RegExp-like objects and RegExps are not equal');
     ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
     ok(!_.isEqual(undefined, null), '`undefined` is not equal to `null`');
-    ok(_.isEqual({isEqual: function () { return true; }}, {}), 'first object implements `isEqual`');
-    ok(_.isEqual({}, {isEqual: function () { return true; }}), 'second object implements `isEqual`');
+    ok(_.isEqual(isEqualObj, isEqualObj), 'both objects implement `isEqual`, same objects');
+    ok(_.isEqual(isEqualObj, isEqualObjClone), 'both objects implement `isEqual`, different objects');
+    ok(_.isEqual(isEqualObjClone, isEqualObj), 'both objects implement `isEqual`, different objects, swapped');
+    ok(!_.isEqual(isEqualObj, {}), 'first object implements `isEqual`');
+    ok(!_.isEqual({}, isEqualObj), 'second object implements `isEqual`');
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
     ok(!_.isEqual(new Foo, new Bar), 'objects with different inherited properties are not equal');
     ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
diff --git a/underscore.js b/underscore.js
index 9d95ebfbc..3ad38311b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -606,29 +606,27 @@
     // The type comparison above prevents unwanted type coercion.
     if (a == b) return true;
     // Optimization; ensure that both values are truthy or falsy.
-    if ((!a && b) || (a && !b)) return false;
+    if (!a != !b) return false;
     // `NaN` values are equal.
     if (_.isNaN(a)) return _.isNaN(b);
     // Compare dates by their millisecond values.
-    var isDateA = _.isDate(a), isDateB = _.isDate(b);
-    if (isDateA || isDateB) return isDateA && isDateB && a.getTime() == b.getTime();
+    if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
     // Compare RegExps by their source patterns and flags.
-    var isRegExpA = _.isRegExp(a), isRegExpB = _.isRegExp(b);
-    if (isRegExpA || isRegExpB) return isRegExpA && isRegExpB &&
-                                       a.source == b.source &&
-                                       a.global == b.global &&
-                                       a.multiline == b.multiline &&
-                                       a.ignoreCase == b.ignoreCase;
+    if (_.isRegExp(a))
+      return _.isRegExp(b) &&
+        a.source == b.source &&
+        a.global == b.global &&
+        a.multiline == b.multiline &&
+        a.ignoreCase == b.ignoreCase;
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
     // Unwrap any wrapped objects.
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
-    if (a.isEqual) return a.isEqual(b);
-    if (b.isEqual) return b.isEqual(a);
+    if (typeof a.isEqual == 'function') return a.isEqual(b);
     // Compare array lengths to determine if a deep comparison is necessary.
-    if (a.length && (a.length !== b.length)) return false;
+    if ('length' in a && (a.length !== b.length)) return false;
     // Assume equality for cyclic structures.
     var length = stack.length;
     while (length--) {

From 34f10467b3f6c476da14bf293359f58089b2067e Mon Sep 17 00:00:00 2001
From: Nadav <nadav@shesek.info>
Date: Wed, 20 Jul 2011 03:41:27 -0700
Subject: [PATCH 347/533] * Added _.escape() for escaping special HTML chars *
 Added support for auto-escaping of values using ```<%== ... %>```

---
 underscore.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 4f5601325..1cf51a7dc 100644
--- a/underscore.js
+++ b/underscore.js
@@ -733,6 +733,11 @@
     for (var i = 0; i < n; i++) iterator.call(context, i);
   };
 
+  // Escape string for HTML
+  _.escape = function(string) {
+    return (''+string).replace(/&(?!\w+;|#\d+;|#x[\da-f]+;)/gi, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
+  };
+
   // Add your own custom functions to the Underscore object, ensuring that
   // they're correctly added to the OOP wrapper as well.
   _.mixin = function(obj) {
@@ -753,7 +758,8 @@
   // following template settings to use alternative delimiters.
   _.templateSettings = {
     evaluate    : /<%([\s\S]+?)%>/g,
-    interpolate : /<%=([\s\S]+?)%>/g
+    interpolate : /<%=([\s\S]+?)%>/g,
+    encode      : /<%==([\s\S]+?)%>/g
   };
 
   // JavaScript micro-templating, similar to John Resig's implementation.
@@ -765,6 +771,9 @@
       'with(obj||{}){__p.push(\'' +
       str.replace(/\\/g, '\\\\')
          .replace(/'/g, "\\'")
+         .replace(c.encode, function(match, code) {
+           return "',_.escape(" + code.replace(/\\'/g, "'") + "),'";
+         })
          .replace(c.interpolate, function(match, code) {
            return "'," + code.replace(/\\'/g, "'") + ",'";
          })

From 75b21957c750fef21e2e24ad6bf902b06137a619 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 3 Aug 2011 11:16:57 -0400
Subject: [PATCH 348/533] Issue #252 #154 #148 documenting numeric length key
 caveat

---
 index.html | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/index.html b/index.html
index de196cdea..c2d37cd0a 100644
--- a/index.html
+++ b/index.html
@@ -1235,6 +1235,13 @@ _([1, 2, 3]).value();
         another type, if you're setting properties with names like "concat" and
         "charCodeAt". So be aware.
       </p>
+      
+      <p>
+        In a similar fashion, <tt>_.each</tt> and all of the other functions 
+        based on it are designed to be able to iterate over any Array-like
+        JavaScript object, including <tt>arguments</tt>, NodeLists, and more.
+        Passing hash-like objects with a numeric <tt>length</tt> key won't work.
+      </p>
 
 
       <h2>Links &amp; Suggested Reading</h2>

From 6cf647505fba5b0dc182d41cba1342cefe3acd35 Mon Sep 17 00:00:00 2001
From: Brian Haveri <brian.haveri@gmail.com>
Date: Thu, 4 Aug 2011 12:42:29 -0600
Subject: [PATCH 349/533] Added link to Underscore.php in the docs

---
 index.html | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/index.html b/index.html
index 87dee9701..3289b5d36 100644
--- a/index.html
+++ b/index.html
@@ -1256,6 +1256,14 @@ _([1, 2, 3]).value();
         available on GitHub.
       </p>
       
+      <p>
+        <a href="http://brianhaveri.github.com/Underscore.php/">Underscore.php</a>,
+        a PHP port of the functions that are applicable in both languages.
+        Includes OOP-wrapping and chaining.
+        The <a href="http://github.com/brianhaveri/Underscore.php">source</a> is
+        available on GitHub.
+      </p>
+      
       <p>
         <a href="https://github.com/edtsech/underscore.string">Underscore.string</a>,
         an Underscore extension that adds functions for string-manipulation: 

From eda751a2a43da386f87e92792df196b71e7252eb Mon Sep 17 00:00:00 2001
From: Brian Haveri <brian.haveri@gmail.com>
Date: Thu, 4 Aug 2011 12:42:29 -0600
Subject: [PATCH 350/533] Added link to Underscore.php in the docs

---
 index.html | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/index.html b/index.html
index de196cdea..9ab3f4d10 100644
--- a/index.html
+++ b/index.html
@@ -1247,6 +1247,14 @@ _([1, 2, 3]).value();
         available on GitHub.
       </p>
       
+      <p>
+        <a href="http://brianhaveri.github.com/Underscore.php/">Underscore.php</a>,
+        a PHP port of the functions that are applicable in both languages.
+        Includes OOP-wrapping and chaining.
+        The <a href="http://github.com/brianhaveri/Underscore.php">source</a> is
+        available on GitHub.
+      </p>
+      
       <p>
         <a href="https://github.com/edtsech/underscore.string">Underscore.string</a>,
         an Underscore extension that adds functions for string-manipulation: 

From 610b3471742db0ee117e5d6117875277cc396aba Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 11 Aug 2011 10:53:29 -0400
Subject: [PATCH 351/533] Adding Underscore-perl

---
 index.html | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/index.html b/index.html
index 3289b5d36..f04572ff9 100644
--- a/index.html
+++ b/index.html
@@ -1264,6 +1264,13 @@ _([1, 2, 3]).value();
         available on GitHub.
       </p>
       
+      <p>
+        <a href="http://vti.github.com/underscore-perl/">Underscore-perl</a>,
+        a Perl port of many of the Underscore.js functions, 
+        aimed at on Perl hashes and arrays, also 
+        <a href="https://github.com/vti/underscore-perl/">available on GitHub</a>.
+      </p>
+      
       <p>
         <a href="https://github.com/edtsech/underscore.string">Underscore.string</a>,
         an Underscore extension that adds functions for string-manipulation: 

From 791ac804732eaf9c12158054f11e6fd0df455d37 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 11 Aug 2011 10:53:29 -0400
Subject: [PATCH 352/533] Adding Underscore-perl

---
 index.html | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/index.html b/index.html
index 9ab3f4d10..3e605fb40 100644
--- a/index.html
+++ b/index.html
@@ -1255,6 +1255,13 @@ _([1, 2, 3]).value();
         available on GitHub.
       </p>
       
+      <p>
+        <a href="http://vti.github.com/underscore-perl/">Underscore-perl</a>,
+        a Perl port of many of the Underscore.js functions, 
+        aimed at on Perl hashes and arrays, also 
+        <a href="https://github.com/vti/underscore-perl/">available on GitHub</a>.
+      </p>
+      
       <p>
         <a href="https://github.com/edtsech/underscore.string">Underscore.string</a>,
         an Underscore extension that adds functions for string-manipulation: 

From f4cba513b96a12367cbf6f5e704b6bfbcfdb492e Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Thu, 25 Aug 2011 21:44:29 +0000
Subject: [PATCH 353/533] Added function shuffle, with test case.

---
 index.html          | 23 ++++++++++++++++++++++-
 test/collections.js |  7 +++++++
 underscore.js       | 15 +++++++++++++++
 3 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index f04572ff9..3254edcfc 100644
--- a/index.html
+++ b/index.html
@@ -65,6 +65,7 @@
         margin: 0px 0 30px;
       }
   </style>
+  <script type="text/javascript" src="underscore-min.js"></script>
 </head>
 <body>
 
@@ -141,7 +142,8 @@
       <a href="#any">any</a>, <a href="#include">include</a>,
       <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
       <a href="#max">max</a>, <a href="#min">min</a>,
-      <a href="#sortBy">sortBy</a>, <a href="#groupBy">groupBy</a>, <a href="#sortedIndex">sortedIndex</a>,
+      <a href="#sortBy">sortBy</a>, <a href="#groupBy">groupBy</a>,
+      <a href="#sortedIndex">sortedIndex</a>, <a href="#shuffle">shuffle</a>,
       <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
     </p>
 
@@ -464,6 +466,25 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
 =&gt; 3
 </pre>
 
+      <p id="shuffle">
+        <b class="header">shuffle</b><code>_.shuffle(list)</code>
+        <br />
+        Returns a shuffled <b>list</b>.
+      </p>
+      <pre>
+_.shuffle([1, 2, 3, 4, 5, 6]);
+=&gt; <span id="shuffled"></span>
+<small><i><b><a href="javascript:doShuffle();">(reshuffle)</a></b></i></small>
+</pre>
+      <script type="text/javascript">
+        function doShuffle() {
+          var el = document.getElementById("shuffled");
+          while (el.firstChild && el.removeChild(el.firstChild));
+          el.appendChild(document.createTextNode("[" + _.shuffle([1, 2, 3, 4, 5, 6]).join(', ') + "]"));
+        }
+        doShuffle();
+      </script>
+
       <p id="toArray">
         <b class="header">toArray</b><code>_.toArray(list)</code>
         <br />
diff --git a/test/collections.js b/test/collections.js
index 005ee169e..9afe95849 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -204,6 +204,13 @@ $(document).ready(function() {
     equals(index, 3, '35 should be inserted at index 3');
   });
 
+  test('collections: shuffle', function() {
+    var numbers = _.range(10);
+	var shuffled = _.shuffle(numbers).sort();
+	notStrictEqual(numbers, shuffled, 'original object is unmodified');
+    equals(shuffled.join(','), numbers.join(','), 'contains the same members before and after shuffle');
+  });
+
   test('collections: toArray', function() {
     ok(!_.isArray(arguments), 'arguments object is not an array');
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
diff --git a/underscore.js b/underscore.js
index 0d587b41c..a19f3186e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -239,6 +239,21 @@
     return result.value;
   };
 
+  // Shuffle an array.
+  _.shuffle = function(obj) {
+    var shuffled = [], rand;
+    each(obj, function(value, index, list) {
+      if (index == 0) {
+        shuffled[0] = value;
+      } else {
+        rand = Math.floor(Math.random() * (index + 1));
+        shuffled[index] = shuffled[rand];
+        shuffled[rand] = value;
+      }
+    });
+    return shuffled;
+  };
+
   // Sort the object's values by a criterion produced by an iterator.
   _.sortBy = function(obj, iterator, context) {
     return _.pluck(_.map(obj, function(value, index, list) {

From 9996ecae5c69eb4ba153edb271ca44a039c9f159 Mon Sep 17 00:00:00 2001
From: Ryan W Tenney <ryan@10e.us>
Date: Thu, 25 Aug 2011 22:13:11 +0000
Subject: [PATCH 354/533] Remove dupe inclusion of underscore-min.js. Get rid
 of 'reshuffle' in index.html.

---
 index.html | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/index.html b/index.html
index 3254edcfc..c33cc95d5 100644
--- a/index.html
+++ b/index.html
@@ -65,7 +65,6 @@
         margin: 0px 0 30px;
       }
   </style>
-  <script type="text/javascript" src="underscore-min.js"></script>
 </head>
 <body>
 
@@ -469,21 +468,12 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
       <p id="shuffle">
         <b class="header">shuffle</b><code>_.shuffle(list)</code>
         <br />
-        Returns a shuffled <b>list</b>.
+        Returns a shuffled copy of <b>list</b>.
       </p>
       <pre>
 _.shuffle([1, 2, 3, 4, 5, 6]);
-=&gt; <span id="shuffled"></span>
-<small><i><b><a href="javascript:doShuffle();">(reshuffle)</a></b></i></small>
+=&gt; [4, 1, 6, 3, 5, 2]
 </pre>
-      <script type="text/javascript">
-        function doShuffle() {
-          var el = document.getElementById("shuffled");
-          while (el.firstChild && el.removeChild(el.firstChild));
-          el.appendChild(document.createTextNode("[" + _.shuffle([1, 2, 3, 4, 5, 6]).join(', ') + "]"));
-        }
-        doShuffle();
-      </script>
 
       <p id="toArray">
         <b class="header">toArray</b><code>_.toArray(list)</code>

From a8f0445192aeac118b3f347a3abfc7bf5af51fd3 Mon Sep 17 00:00:00 2001
From: Malcolm Locke <malc@wholemeal.co.nz>
Date: Wed, 31 Aug 2011 22:39:05 +1200
Subject: [PATCH 355/533] Add an optional index argument to _.last()

This makes _.last() behave the same as _.first().  Passing an optional
second argument n will return the last n elements of the array.
---
 test/arrays.js | 2 ++
 underscore.js  | 7 ++++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 78cf098a0..bbf74e6da 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -26,6 +26,8 @@ $(document).ready(function() {
 
   test("arrays: last", function() {
     equals(_.last([1,2,3]), 3, 'can pull out the last element of an array');
+    equals(_.last([1,2,3], 0).join(', '), "", 'can pass an index to last');
+    equals(_.last([1,2,3], 2).join(', '), '2, 3', 'can pass an index to last');
     var result = (function(){ return _(arguments).last(); })(1, 2, 3, 4);
     equals(result, 4, 'works on an arguments object');
   });
diff --git a/underscore.js b/underscore.js
index 0d587b41c..7963394cb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -306,9 +306,10 @@
     return slice.call(array, (index == null) || guard ? 1 : index);
   };
 
-  // Get the last element of an array.
-  _.last = function(array) {
-    return array[array.length - 1];
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array.
+  _.last = function(array, n) {
+    return (n != null) ? slice.call(array, array.length - n) : array[array.length - 1];
   };
 
   // Trim out all falsy values from an array.

From e449b00a26d0bfc29c0be42f1ea98c7d8f5493b9 Mon Sep 17 00:00:00 2001
From: Malcolm Locke <malc@wholemeal.co.nz>
Date: Thu, 1 Sep 2011 01:10:10 +1200
Subject: [PATCH 356/533] Add guard check to _.last()

Allows _.last() to work as expected with _.map().
---
 test/arrays.js | 2 ++
 underscore.js  | 6 +++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index bbf74e6da..950e8417f 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -30,6 +30,8 @@ $(document).ready(function() {
     equals(_.last([1,2,3], 2).join(', '), '2, 3', 'can pass an index to last');
     var result = (function(){ return _(arguments).last(); })(1, 2, 3, 4);
     equals(result, 4, 'works on an arguments object');
+    result = _.map([[1,2,3],[1,2,3]], _.last);
+    equals(result.join(','), '3,3', 'works well with _.map');
   });
 
   test("arrays: compact", function() {
diff --git a/underscore.js b/underscore.js
index 7963394cb..239d7dd34 100644
--- a/underscore.js
+++ b/underscore.js
@@ -307,9 +307,9 @@
   };
 
   // Get the last element of an array. Passing **n** will return the last N
-  // values in the array.
-  _.last = function(array, n) {
-    return (n != null) ? slice.call(array, array.length - n) : array[array.length - 1];
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    return (n != null) && !guard ? slice.call(array, array.length - n) : array[array.length - 1];
   };
 
   // Trim out all falsy values from an array.

From bf3aa97c3614f032983afe0740813021e70a06dd Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Sun, 4 Sep 2011 19:34:19 -0400
Subject: [PATCH 357/533] reverting some changes to isEqual that were a little
 too aggressive

---
 test/objects.js |  4 ++--
 underscore.js   | 17 ++++++++++-------
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 4234f0fad..bb0f98553 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -72,8 +72,8 @@ $(document).ready(function() {
 
     var moe   = {name : 'moe', lucky : [13, 27, 34]};
     var clone = {name : 'moe', lucky : [13, 27, 34]};
-	var isEqualObj = {isEqual: function (o) { return o.isEqual == this.isEqual; }, unique: {}};
-	var isEqualObjClone = {isEqual: isEqualObj.isEqual, unique: {}};
+    var isEqualObj = {isEqual: function (o) { return o.isEqual == this.isEqual; }, unique: {}};
+    var isEqualObjClone = {isEqual: isEqualObj.isEqual, unique: {}};
     ok(moe != clone, 'basic equality between objects is false');
     ok(_.isEqual(moe, clone), 'deep equality is true');
     ok(_(moe).isEqual(clone), 'OO-style deep equality works');
diff --git a/underscore.js b/underscore.js
index 3ad38311b..7615b5d5e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -610,14 +610,16 @@
     // `NaN` values are equal.
     if (_.isNaN(a)) return _.isNaN(b);
     // Compare dates by their millisecond values.
-    if (_.isDate(a)) return _.isDate(b) && a.getTime() == b.getTime();
+    var isDateA = _.isDate(a), isDateB = _.isDate(b);
+    if (isDateA || isDateB) return isDateA && isDateB && a.getTime() == b.getTime();
     // Compare RegExps by their source patterns and flags.
-    if (_.isRegExp(a))
-      return _.isRegExp(b) &&
-        a.source == b.source &&
-        a.global == b.global &&
-        a.multiline == b.multiline &&
-        a.ignoreCase == b.ignoreCase;
+    var isRegExpA = _.isRegExp(a), isRegExpB = _.isRegExp(b);
+    if (isRegExpA || isRegExpB)
+        return isRegExpA && isRegExpB &&
+            a.source == b.source &&
+            a.global == b.global &&
+            a.multiline == b.multiline &&
+            a.ignoreCase == b.ignoreCase;
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
     // Unwrap any wrapped objects.
@@ -625,6 +627,7 @@
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
     if (typeof a.isEqual == 'function') return a.isEqual(b);
+    if (typeof b.isEqual == 'function') return b.isEqual(a);
     // Compare array lengths to determine if a deep comparison is necessary.
     if ('length' in a && (a.length !== b.length)) return false;
     // Assume equality for cyclic structures.

From 6f62f258cb4c1c45248c30c56cfd0ceea7051086 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Mon, 5 Sep 2011 12:25:59 -0600
Subject: [PATCH 358/533] Add support for comparing string, number, and boolean
 object wrappers. Ignore inherited properties when deep comparing objects. Use
 a more efficient `while` loop for comparing arrays and array-like objects.

---
 underscore.js | 75 +++++++++++++++++++++++++++++++++------------------
 1 file changed, 49 insertions(+), 26 deletions(-)

diff --git a/underscore.js b/underscore.js
index 7615b5d5e..825e9405d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -603,23 +603,29 @@
     // Compare object types.
     var typeA = typeof a;
     if (typeA != typeof b) return false;
-    // The type comparison above prevents unwanted type coercion.
-    if (a == b) return true;
     // Optimization; ensure that both values are truthy or falsy.
     if (!a != !b) return false;
-    // `NaN` values are equal.
-    if (_.isNaN(a)) return _.isNaN(b);
+    // Compare string objects by value.
+    var isStringA = _.isString(a), isStringB = _.isString(b);
+    if (isStringA || isStringB) return isStringA && isStringB && String(a) == String(b);
+    // Compare number objects by value. `NaN` values are equal.
+    var isNumberA = toString.call(a) == '[object Number]', isNumberB = toString.call(b) == '[object Number]';
+    if (isNumberA || isNumberB) return isNumberA && isNumberB && (_.isNaN(a) ? _.isNaN(b) : +a == +b);
+    // Compare boolean objects by value. The value of `true` is 1; the value of `false` is 0.
+    var isBooleanA = toString.call(a) == '[object Boolean]', isBooleanB = toString.call(b) == '[object Boolean]';
+    if (isBooleanA || isBooleanB) return isBooleanA && isBooleanB && +a == +b;
     // Compare dates by their millisecond values.
     var isDateA = _.isDate(a), isDateB = _.isDate(b);
     if (isDateA || isDateB) return isDateA && isDateB && a.getTime() == b.getTime();
     // Compare RegExps by their source patterns and flags.
     var isRegExpA = _.isRegExp(a), isRegExpB = _.isRegExp(b);
     if (isRegExpA || isRegExpB)
-        return isRegExpA && isRegExpB &&
-            a.source == b.source &&
-            a.global == b.global &&
-            a.multiline == b.multiline &&
-            a.ignoreCase == b.ignoreCase;
+      // Ensure commutative equality for RegExps.
+      return isRegExpA && isRegExpB &&
+             a.source == b.source &&
+             a.global == b.global &&
+             a.multiline == b.multiline &&
+             a.ignoreCase == b.ignoreCase;
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
     // Unwrap any wrapped objects.
@@ -627,30 +633,47 @@
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
     if (typeof a.isEqual == 'function') return a.isEqual(b);
-    if (typeof b.isEqual == 'function') return b.isEqual(a);
-    // Compare array lengths to determine if a deep comparison is necessary.
-    if ('length' in a && (a.length !== b.length)) return false;
-    // Assume equality for cyclic structures.
+    // If only `b` provides an `isEqual` method, `a` and `b` are not equal.
+    if (typeof b.isEqual == 'function') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
+    // adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
     var length = stack.length;
     while (length--) {
+      // Linear search. Performance is inversely proportional to the number of unique nested
+      // structures.
       if (stack[length] == a) return true;
     }
     // Add the first object to the stack of traversed objects.
     stack.push(a);
-    // Deep compare the two objects.
-    var size = 0, sizeRight = 0, result = true, key;
-    for (key in a) {
-      // Count the expected number of properties.
-      size++;
-      // Deep compare each member.
-      if (!(result = key in b && eq(a[key], b[key], stack))) break;
-    }
-    // Ensure that both objects contain the same number of properties.
-    if (result) {
-      for (key in b) {
-        if (++sizeRight > size) break;
+    var size = 0, result = true;
+    if (a.length === +a.length || b.length === +b.length) {
+      // Compare object lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare array-like object contents, ignoring non-numeric properties.
+        while (size--) {
+          // Ensure commutative equality for sparse arrays.
+          if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
+        }
+      }
+    } else {
+      // Deep compare objects.
+      for (var key in a) {
+        if (hasOwnProperty.call(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (hasOwnProperty.call(b, key) && !size--) break;
+        }
+        result = !size;
       }
-      result = size == sizeRight;
     }
     // Remove the first object from the stack of traversed objects.
     stack.pop();

From e9faa401082034b5ac6ce6dc3855db714451b747 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Mon, 5 Sep 2011 12:27:03 -0600
Subject: [PATCH 359/533] Add a comprehensive test suite for `isEqual`.

---
 test/objects.js | 290 ++++++++++++++++++++++++++++++++++++------------
 1 file changed, 222 insertions(+), 68 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index bb0f98553..6fc60f1e4 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -65,78 +65,232 @@ $(document).ready(function() {
   });
 
   test("objects: isEqual", function() {
-    function Foo(){ this.own = 'a'; }
-    function Bar(){ this.own = 'a'; }
-    Foo.prototype.inherited = 1;
-    Bar.prototype.inherited = 2;
+    function First() {
+      this.value = 1;
+    }
+    First.prototype.value = 1;
+    function Second() {
+      this.value = 1;
+    }
+    Second.prototype.value = 2;
 
-    var moe   = {name : 'moe', lucky : [13, 27, 34]};
-    var clone = {name : 'moe', lucky : [13, 27, 34]};
+    // Basic equality and identity comparisons.
+    ok(_.isEqual(null, null), "`null` is equal to `null`");
+    ok(_.isEqual(), "`undefined` is equal to `undefined`");
+
+    ok(!_.isEqual(0, -0), "`0` is not equal to `-0`");
+    ok(!_.isEqual(-0, 0), "Commutative equality is implemented for `0` and `-0`");
+    ok(!_.isEqual(null, undefined), "`null` is not equal to `undefined`");
+    ok(!_.isEqual(undefined, null), "Commutative equality is implemented for `null` and `undefined`");
+
+    // String object and primitive comparisons.
+    ok(_.isEqual("Curly", "Curly"), "Identical string primitives are equal");
+    ok(_.isEqual(new String("Curly"), new String("Curly")), "String objects with identical primitive values are equal");
+
+    ok(!_.isEqual("Curly", "Larry"), "String primitives with different values are not equal");
+    ok(!_.isEqual(new String("Curly"), "Curly"), "String primitives and their corresponding object wrappers are not equal");
+    ok(!_.isEqual("Curly", new String("Curly")), "Commutative equality is implemented for string objects and primitives");
+    ok(!_.isEqual(new String("Curly"), new String("Larry")), "String objects with different primitive values are not equal");
+    ok(!_.isEqual(new String("Curly"), {toString: function(){ return "Curly"; }}), "String objects and objects with a custom `toString` method are not equal");
+
+    // Number object and primitive comparisons.
+    ok(_.isEqual(75, 75), "Identical number primitives are equal");
+    ok(_.isEqual(new Number(75), new Number(75)), "Number objects with identical primitive values are equal");
+
+    ok(!_.isEqual(75, new Number(75)), "Number primitives and their corresponding object wrappers are not equal");
+    ok(!_.isEqual(new Number(75), 75), "Commutative equality is implemented for number objects and primitives");
+    ok(!_.isEqual(new Number(75), new Number(63)), "Number objects with different primitive values are not equal");
+    ok(!_.isEqual(new Number(63), {valueOf: function(){ return 63; }}), "Number objects and objects with a `valueOf` method are not equal");
+
+    // Comparisons involving `NaN`.
+    ok(_.isEqual(NaN, NaN), "`NaN` is equal to `NaN`");
+    ok(!_.isEqual(61, NaN), "A number primitive is not equal to `NaN`");
+    ok(!_.isEqual(new Number(79), NaN), "A number object is not equal to `NaN`");
+    ok(!_.isEqual(Infinity, NaN), "`Infinity` is not equal to `NaN`");
+
+    // Boolean object and primitive comparisons.
+    ok(_.isEqual(true, true), "Identical boolean primitives are equal");
+    ok(_.isEqual(new Boolean, new Boolean), "Boolean objects with identical primitive values are equal");
+    ok(!_.isEqual(true, new Boolean(true)), "Boolean primitives and their corresponding object wrappers are not equal");
+    ok(!_.isEqual(new Boolean(true), true), "Commutative equality is implemented for booleans");
+    ok(!_.isEqual(new Boolean(true), new Boolean), "Boolean objects with different primitive values are not equal");
+
+    // Common type coercions.
+    ok(!_.isEqual(true, new Boolean(false)), "Boolean objects are not equal to the boolean primitive `true`");
+    ok(!_.isEqual("75", 75), "String and number primitives with like values are not equal");
+    ok(!_.isEqual(new Number(63), new String(63)), "String and number objects with like values are not equal");
+    ok(!_.isEqual(75, "75"), "Commutative equality is implemented for like string and number values");
+    ok(!_.isEqual(0, ""), "Number and string primitives with like values are not equal");
+    ok(!_.isEqual(1, true), "Number and boolean primitives with like values are not equal");
+    ok(!_.isEqual(new Boolean(false), new Number(0)), "Boolean and number objects with like values are not equal");
+    ok(!_.isEqual(false, new String("")), "Boolean primitives and string objects with like values are not equal");
+    ok(!_.isEqual(12564504e5, new Date(2009, 9, 25)), "Dates and their corresponding numeric primitive values are not equal");
+
+    // Dates.
+    ok(_.isEqual(new Date(2009, 9, 25), new Date(2009, 9, 25)), "Date objects referencing identical times are equal");
+    ok(!_.isEqual(new Date(2009, 9, 25), new Date(2009, 11, 13)), "Date objects referencing different times are not equal");
+    ok(!_.isEqual(new Date(2009, 11, 13), {
+      getTime: function(){
+        return 12606876e5;
+      }
+    }), "Date objects and objects with a `getTime` method are not equal");
+    ok(!_.isEqual(new Date("Curly"), new Date("Curly")), "Invalid dates are not equal");
+
+    // Functions.
+    ok(!_.isEqual(First, Second), "Different functions with identical bodies and source code representations are not equal");
+
+    // RegExps.
+    ok(_.isEqual(/(?:)/gim, /(?:)/gim), "RegExps with equivalent patterns and flags are equal");
+    ok(!_.isEqual(/(?:)/g, /(?:)/gi), "RegExps with equivalent patterns and different flags are not equal");
+    ok(!_.isEqual(/Moe/gim, /Curly/gim), "RegExps with different patterns and equivalent flags are not equal");
+    ok(!_.isEqual(/(?:)/gi, /(?:)/g), "Commutative equality is implemented for RegExps");
+    ok(!_.isEqual(/Curly/g, {source: "Larry", global: true, ignoreCase: false, multiline: false}), "RegExps and RegExp-like objects are not equal");
+
+    // Empty arrays, array-like objects, and object literals.
+    ok(_.isEqual({}, {}), "Empty object literals are equal");
+    ok(_.isEqual([], []), "Empty array literals are equal");
+    ok(_.isEqual([{}], [{}]), "Empty nested arrays and objects are equal");
+    ok(_.isEqual({length: 0}, []), "Array-like objects and arrays are equal");
+    ok(_.isEqual([], {length: 0}), "Commutative equality is implemented for array-like objects");
+
+    ok(!_.isEqual({}, []), "Object literals and array literals are not equal");
+    ok(!_.isEqual([], {}), "Commutative equality is implemented for objects and arrays");
+
+    // Arrays with primitive and object values.
+    ok(_.isEqual([1, "Larry", true], [1, "Larry", true]), "Arrays containing identical primitives are equal");
+    ok(_.isEqual([/Moe/g, new Date(2009, 9, 25)], [/Moe/g, new Date(2009, 9, 25)]), "Arrays containing equivalent elements are equal");
+
+    // Multi-dimensional arrays.
+    var a = [new Number(47), false, "Larry", /Moe/, new Date(2009, 11, 13), ['running', 'biking', new String('programming')], {a: 47}];
+    var b = [new Number(47), false, "Larry", /Moe/, new Date(2009, 11, 13), ['running', 'biking', new String('programming')], {a: 47}];
+    ok(_.isEqual(a, b), "Arrays containing nested arrays and objects are recursively compared");
+
+    // Overwrite the methods defined in ES 5.1 section 15.4.4.
+    a.forEach = a.map = a.filter = a.every = a.indexOf = a.lastIndexOf = a.some = a.reduce = a.reduceRight = null;
+    b.join = b.pop = b.reverse = b.shift = b.slice = b.splice = b.concat = b.sort = b.unshift = null;
+
+    // Array elements and properties.
+    ok(_.isEqual(a, b), "Arrays containing equivalent elements and different non-numeric properties are equal");
+    a.push("White Rocks");
+    ok(!_.isEqual(a, b), "Arrays of different lengths are not equal");
+    a.push("East Boulder");
+    b.push("Gunbarrel Ranch", "Teller Farm");
+    ok(!_.isEqual(a, b), "Arrays of identical lengths containing different elements are not equal");
+
+    // Sparse arrays.
+    ok(_.isEqual(Array(3), Array(3)), "Sparse arrays of identical lengths are equal");
+    ok(!_.isEqual(Array(3), Array(6)), "Sparse arrays of different lengths are not equal");
+
+    // According to the Microsoft deviations spec, section 2.1.26, JScript 5.x treats `undefined`
+    // elements in arrays as elisions. Thus, sparse arrays and dense arrays containing `undefined`
+    // values are equivalent.
+    if (0 in [undefined]) {
+      ok(!_.isEqual(Array(3), [undefined, undefined, undefined]), "Sparse and dense arrays are not equal");
+      ok(!_.isEqual([undefined, undefined, undefined], Array(3)), "Commutative equality is implemented for sparse and dense arrays");
+    }
+
+    // Simple objects.
+    ok(_.isEqual({a: "Curly", b: 1, c: true}, {a: "Curly", b: 1, c: true}), "Objects containing identical primitives are equal");
+    ok(_.isEqual({a: /Curly/g, b: new Date(2009, 11, 13)}, {a: /Curly/g, b: new Date(2009, 11, 13)}), "Objects containing equivalent members are equal");
+    ok(!_.isEqual({a: 63, b: 75}, {a: 61, b: 55}), "Objects of identical sizes with different values are not equal");
+    ok(!_.isEqual({a: 63, b: 75}, {a: 61, c: 55}), "Objects of identical sizes with different property names are not equal");
+    ok(!_.isEqual({a: 1, b: 2}, {a: 1}), "Objects of different sizes are not equal");
+    ok(!_.isEqual({a: 1}, {a: 1, b: 2}), "Commutative equality is implemented for objects");
+    ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), "Objects with identical keys and different values are not equivalent");
+
+    // `A` contains nested objects and arrays.
+    a = {
+      name: new String("Moe Howard"),
+      age: new Number(77),
+      stooge: true,
+      hobbies: ["acting"],
+      film: {
+        name: "Sing a Song of Six Pants",
+        release: new Date(1947, 9, 30),
+        stars: [new String("Larry Fine"), "Shemp Howard"],
+        minutes: new Number(16),
+        seconds: 54
+      }
+    };
+
+    // `B` contains equivalent nested objects and arrays.
+    b = {
+      name: new String("Moe Howard"),
+      age: new Number(77),
+      stooge: true,
+      hobbies: ["acting"],
+      film: {
+        name: "Sing a Song of Six Pants",
+        release: new Date(1947, 9, 30),
+        stars: [new String("Larry Fine"), "Shemp Howard"],
+        minutes: new Number(16),
+        seconds: 54
+      }
+    };
+    ok(_.isEqual(a, b), "Objects with nested equivalent members are recursively compared");
+
+    // Instances.
+    ok(_.isEqual(new First, new First), "Object instances are equal");
+    ok(_.isEqual(new First, new Second), "Objects with different constructors and identical own properties are equal");
+    ok(_.isEqual({value: 1}, new First), "Object instances and objects sharing equivalent properties are identical");
+    ok(!_.isEqual({value: 2}, new Second), "The prototype chain of objects should not be examined");
+
+    // Circular Arrays.
+    (a = []).push(a);
+    (b = []).push(b);
+    ok(_.isEqual(a, b), "Arrays containing circular references are equal");
+    a.push(new String("Larry"));
+    b.push(new String("Larry"));
+    ok(_.isEqual(a, b), "Arrays containing circular references and equivalent properties are equal");
+    a.push("Shemp");
+    b.push("Curly");
+    ok(!_.isEqual(a, b), "Arrays containing circular references and different properties are not equal");
+
+    // Circular Objects.
+    a = {abc: null};
+    b = {abc: null};
+    a.abc = a;
+    b.abc = b;
+    ok(_.isEqual(a, b), "Objects containing circular references are equal");
+    a.def = 75;
+    b.def = 75;
+    ok(_.isEqual(a, b), "Objects containing circular references and equivalent properties are equal");
+    a.def = new Number(75);
+    b.def = new Number(63);
+    ok(!_.isEqual(a, b), "Objects containing circular references and different properties are not equal");
+
+    // Cyclic Structures.
+    a = [{abc: null}];
+    b = [{abc: null}];
+    (a[0].abc = a).push(a);
+    (b[0].abc = b).push(b);
+    ok(_.isEqual(a, b), "Cyclic structures are equal");
+    a[0].def = "Larry";
+    b[0].def = "Larry";
+    ok(_.isEqual(a, b), "Cyclic structures containing equivalent properties are equal");
+    a[0].def = new String("Larry");
+    b[0].def = new String("Curly");
+    ok(!_.isEqual(a, b), "Cyclic structures containing different properties are not equal");
+
+    // Complex Circular References.
+    a = {foo: {b: {foo: {c: {foo: null}}}}};
+    b = {foo: {b: {foo: {c: {foo: null}}}}};
+    a.foo.b.foo.c.foo = a;
+    b.foo.b.foo.c.foo = b;
+    ok(_.isEqual(a, b), "Cyclic structures with nested and identically-named properties are equal");
+
+    // Chaining.
+    ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'Chained objects containing different values are not equal');
+    equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, '`isEqual` can be chained');
+
+    // Custom `isEqual` methods.
     var isEqualObj = {isEqual: function (o) { return o.isEqual == this.isEqual; }, unique: {}};
     var isEqualObjClone = {isEqual: isEqualObj.isEqual, unique: {}};
-    ok(moe != clone, 'basic equality between objects is false');
-    ok(_.isEqual(moe, clone), 'deep equality is true');
-    ok(_(moe).isEqual(clone), 'OO-style deep equality works');
-    ok(!_.isEqual(5, NaN), '5 is not equal to NaN');
-    ok(NaN != NaN, 'NaN is not equal to NaN (native equality)');
-    ok(NaN !== NaN, 'NaN is not equal to NaN (native identity)');
-    ok(_.isEqual(NaN, NaN), 'NaN is equal to NaN');
-    ok(!_.isEqual(5, NaN), '`5` is not equal to `NaN`');
-    ok(!_.isEqual(false, NaN), '`false` is not equal to `NaN`');
-    ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
-    ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
-    ok(!_.isEqual({source: '(?:)', global: true, multiline: true, ignoreCase: true}, /(?:)/gim), 'RegExp-like objects and RegExps are not equal');
-    ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
-    ok(!_.isEqual(undefined, null), '`undefined` is not equal to `null`');
-    ok(_.isEqual(isEqualObj, isEqualObj), 'both objects implement `isEqual`, same objects');
-    ok(_.isEqual(isEqualObj, isEqualObjClone), 'both objects implement `isEqual`, different objects');
-    ok(_.isEqual(isEqualObjClone, isEqualObj), 'both objects implement `isEqual`, different objects, swapped');
-    ok(!_.isEqual(isEqualObj, {}), 'first object implements `isEqual`');
-    ok(!_.isEqual({}, isEqualObj), 'second object implements `isEqual`');
-    ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
-    ok(!_.isEqual(new Foo, new Bar), 'objects with different inherited properties are not equal');
-    ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
-    equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, 'wrapped objects are equal');
 
-    // Objects with circular references.
-    var circularA = {'abc': null}, circularB = {'abc': null};
-    circularA.abc = circularA;
-    circularB.abc = circularB;
-    ok(_.isEqual(circularA, circularB), 'objects with a circular reference');
-    circularA.def = 1;
-    circularB.def = 1;
-    ok(_.isEqual(circularA, circularB), 'objects with identical properties and a circular reference');
-    circularA.def = 1;
-    circularB.def = 0;
-    ok(!_.isEqual(circularA, circularB), 'objects with different properties and a circular reference');
-
-    // Arrays with circular references.
-    circularA = [];
-    circularB = [];
-    circularA.push(circularA);
-    circularB.push(circularB);
-    ok(_.isEqual(circularA, circularB), 'arrays with a circular reference');
-    circularA.push('abc');
-    circularB.push('abc');
-    ok(_.isEqual(circularA, circularB), 'arrays with identical indices and a circular reference');
-    circularA.push('hello');
-    circularB.push('goodbye');
-    ok(!_.isEqual(circularA, circularB), 'arrays with different properties and a circular reference');
-
-    // Hybrid cyclic structures.
-    circularA = [{'abc': null}];
-    circularB = [{'abc': null}];
-    circularA[0].abc = circularA;
-    circularB[0].abc = circularB;
-    circularA.push(circularA);
-    circularB.push(circularB);
-    ok(_.isEqual(circularA, circularB), 'cyclic structure');
-    circularA[0].def = 1;
-    circularB[0].def = 1;
-    ok(_.isEqual(circularA, circularB), 'cyclic structure with identical properties');
-    circularA[0].def = 1;
-    circularB[0].def = 0;
-    ok(!_.isEqual(circularA, circularB), 'cyclic structure with different properties');
+    ok(_.isEqual(isEqualObj, isEqualObjClone), 'Both objects implement identical `isEqual` methods');
+    ok(_.isEqual(isEqualObjClone, isEqualObj), 'Commutative equality is implemented for objects with custom `isEqual` methods');
+    ok(!_.isEqual(isEqualObj, {}), 'Objects that do not implement equivalent `isEqual` methods are not equal');
+    ok(!_.isEqual({}, isEqualObj), 'Commutative equality is implemented for objects with different `isEqual` methods');
   });
 
   test("objects: isEmpty", function() {

From 54245bc679d448427bebd71a8608283476b2d752 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Mon, 5 Sep 2011 12:34:09 -0600
Subject: [PATCH 360/533] `_.isEqual`: Add an early comparison for `NaN`
 values.

---
 underscore.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/underscore.js b/underscore.js
index 825e9405d..46f0ef685 100644
--- a/underscore.js
+++ b/underscore.js
@@ -605,12 +605,14 @@
     if (typeA != typeof b) return false;
     // Optimization; ensure that both values are truthy or falsy.
     if (!a != !b) return false;
+    // `NaN` values are equal.
+    if (_.isNaN(a)) return _.isNaN(b);
     // Compare string objects by value.
     var isStringA = _.isString(a), isStringB = _.isString(b);
     if (isStringA || isStringB) return isStringA && isStringB && String(a) == String(b);
-    // Compare number objects by value. `NaN` values are equal.
-    var isNumberA = toString.call(a) == '[object Number]', isNumberB = toString.call(b) == '[object Number]';
-    if (isNumberA || isNumberB) return isNumberA && isNumberB && (_.isNaN(a) ? _.isNaN(b) : +a == +b);
+    // Compare number objects by value.
+    var isNumberA = _.isNumber(a), isNumberB = _.isNumber(b);
+    if (isNumberA || isNumberB) return isNumberA && isNumberB && +a == +b;
     // Compare boolean objects by value. The value of `true` is 1; the value of `false` is 0.
     var isBooleanA = toString.call(a) == '[object Boolean]', isBooleanB = toString.call(b) == '[object Boolean]';
     if (isBooleanA || isBooleanB) return isBooleanA && isBooleanB && +a == +b;

From 4fa97eb2fa7c387913bead871767912ab22d5ee2 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Mon, 5 Sep 2011 15:51:09 -0600
Subject: [PATCH 361/533] `_.isBoolean` should return `true` for boolean object
 wrappers.

---
 test/objects.js | 6 +++---
 underscore.js   | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 6fc60f1e4..95e5ab829 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -318,14 +318,14 @@ $(document).ready(function() {
       parent.iElement   = document.createElement('div');\
       parent.iArguments = (function(){ return arguments; })(1, 2, 3);\
       parent.iArray     = [1, 2, 3];\
-      parent.iString    = 'hello';\
-      parent.iNumber    = 100;\
+      parent.iString    = new String('hello');\
+      parent.iNumber    = new Number(100);\
       parent.iFunction  = (function(){});\
       parent.iDate      = new Date();\
       parent.iRegExp    = /hi/;\
       parent.iNaN       = NaN;\
       parent.iNull      = null;\
-      parent.iBoolean   = false;\
+      parent.iBoolean   = new Boolean(false);\
       parent.iUndefined = undefined;\
     </script>"
   );
diff --git a/underscore.js b/underscore.js
index 46f0ef685..e2a2fb260 100644
--- a/underscore.js
+++ b/underscore.js
@@ -614,7 +614,7 @@
     var isNumberA = _.isNumber(a), isNumberB = _.isNumber(b);
     if (isNumberA || isNumberB) return isNumberA && isNumberB && +a == +b;
     // Compare boolean objects by value. The value of `true` is 1; the value of `false` is 0.
-    var isBooleanA = toString.call(a) == '[object Boolean]', isBooleanB = toString.call(b) == '[object Boolean]';
+    var isBooleanA = _.isBoolean(a), isBooleanB = _.isBoolean(b);
     if (isBooleanA || isBooleanB) return isBooleanA && isBooleanB && +a == +b;
     // Compare dates by their millisecond values.
     var isDateA = _.isDate(a), isDateB = _.isDate(b);
@@ -738,7 +738,7 @@
 
   // Is a given value a boolean?
   _.isBoolean = function(obj) {
-    return obj === true || obj === false;
+    return obj === true || obj === false || typeof obj == 'object' && toString.call(obj) == '[object Boolean]';
   };
 
   // Is a given value a date?

From 1facc0e4fee98df915d0ecd8f20ce56482ba6875 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 4 Oct 2011 15:56:26 -0400
Subject: [PATCH 362/533] merging in Tim Smart's gorgeous deep equality patch
 for _.isEqual

---
 underscore.js | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index fbd8e423b..fcd3d09c9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -631,22 +631,21 @@
     if (isDateA || isDateB) return isDateA && isDateB && a.getTime() == b.getTime();
     // Compare RegExps by their source patterns and flags.
     var isRegExpA = _.isRegExp(a), isRegExpB = _.isRegExp(b);
-    if (isRegExpA || isRegExpB)
+    if (isRegExpA || isRegExpB) {
       // Ensure commutative equality for RegExps.
       return isRegExpA && isRegExpB &&
              a.source == b.source &&
              a.global == b.global &&
              a.multiline == b.multiline &&
              a.ignoreCase == b.ignoreCase;
+    }
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
     // Unwrap any wrapped objects.
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
-    if (typeof a.isEqual == 'function') return a.isEqual(b);
-    // If only `b` provides an `isEqual` method, `a` and `b` are not equal.
-    if (typeof b.isEqual == 'function') return false;
+    if (_.isFunction(a.isEqual)) return a.isEqual(b);
     // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
     // adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
     var length = stack.length;
@@ -748,7 +747,7 @@
 
   // Is a given value a boolean?
   _.isBoolean = function(obj) {
-    return obj === true || obj === false || typeof obj == 'object' && toString.call(obj) == '[object Boolean]';
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
   };
 
   // Is a given value a date?

From 7d0e4169a9453da3c664f82327840a861244c574 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 4 Oct 2011 15:56:32 -0400
Subject: [PATCH 363/533] shortening module names.

---
 test/arrays.js      | 2 +-
 test/chaining.js    | 2 +-
 test/collections.js | 2 +-
 test/functions.js   | 2 +-
 test/objects.js     | 2 +-
 test/utility.js     | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 78cf098a0..2d69235c4 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-  module("Array-only functions (last, compact, uniq, and so on...)");
+  module("Arrays");
 
   test("arrays: first", function() {
     equals(_.first([1,2,3]), 1, 'can pull out the first element of an array');
diff --git a/test/chaining.js b/test/chaining.js
index e633ba5ad..64b0500ef 100644
--- a/test/chaining.js
+++ b/test/chaining.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-  module("Underscore chaining.");
+  module("Chaining");
 
   test("chaining: map/flatten/reduce", function() {
     var lyrics = [
diff --git a/test/collections.js b/test/collections.js
index 005ee169e..95e111591 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-  module("Collection functions (each, any, select, and so on...)");
+  module("Collections");
 
   test("collections: each", function() {
     _.each([1, 2, 3], function(num, i) {
diff --git a/test/functions.js b/test/functions.js
index 2a1bd51bd..af35e5eff 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-  module("Function functions (bind, bindAll, and so on...)");
+  module("Functions");
 
   test("functions: bind", function() {
     var context = {name : 'moe'};
diff --git a/test/objects.js b/test/objects.js
index ded65c317..e05c0ddc5 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-  module("Object functions (values, extend, isEqual, and so on...)");
+  module("Objects");
 
   test("objects: keys", function() {
     var exception = /object/;
diff --git a/test/utility.js b/test/utility.js
index 94252a654..58368a13e 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -1,6 +1,6 @@
 $(document).ready(function() {
 
-  module("Utility functions (uniqueId, template)");
+  module("Utility");
 
   test("utility: noConflict", function() {
     var underscore = _.noConflict();

From 348c93515cf56263828c683ebab055e6c800b63b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 4 Oct 2011 17:23:55 -0400
Subject: [PATCH 364/533] Issue #272 ... min and max of empty objects.

---
 test/collections.js | 6 ++++++
 underscore.js       | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/test/collections.js b/test/collections.js
index 90cdd3d87..cf1c815d6 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -177,6 +177,9 @@ $(document).ready(function() {
 
     var neg = _.max([1, 2, 3], function(num){ return -num; });
     equals(neg, 1, 'can perform a computation-based max');
+
+    equals(-Infinity, _.max({}), 'Maximum value of an empty object');
+    equals(-Infinity, _.max([]), 'Maximum value of an empty array');
   });
 
   test('collections: min', function() {
@@ -184,6 +187,9 @@ $(document).ready(function() {
 
     var neg = _.min([1, 2, 3], function(num){ return -num; });
     equals(neg, 3, 'can perform a computation-based min');
+
+    equals(Infinity, _.min({}), 'Minimum value of an empty object');
+    equals(Infinity, _.min([]), 'Minimum value of an empty array');
   });
 
   test('collections: sortBy', function() {
diff --git a/underscore.js b/underscore.js
index f59d040c7..0db66d0b6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -220,6 +220,7 @@
   // Return the maximum element or (element-based computation).
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+    if (!iterator && _.isEmpty(obj)) return -Infinity;
     var result = {computed : -Infinity};
     each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
@@ -231,6 +232,7 @@
   // Return the minimum element (or element-based computation).
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+    if (!iterator && _.isEmpty(obj)) return Infinity;
     var result = {computed : Infinity};
     each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;

From 221161ceccd224f9b0f871426ddd656f358a2f5b Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Tue, 4 Oct 2011 22:24:36 -0400
Subject: [PATCH 365/533] better isXXX checks; the current tests have too many
 false positives

---
 test/objects.js |  5 +++--
 underscore.js   | 17 +++++++++--------
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index e05c0ddc5..0e1f3e4f3 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -383,14 +383,15 @@ $(document).ready(function() {
     ok(!_.isNumber(arguments), 'the arguments object is not a number');
     ok(!_.isNumber(undefined), 'undefined is not a number');
     ok(_.isNumber(3 * 4 - 7 / 10), 'but numbers are');
-    ok(!_.isNumber(NaN), 'NaN is not a number');
+    ok(_.isNumber(NaN), 'NaN *is* a number');
     ok(_.isNumber(Infinity), 'Infinity is a number');
     ok(_.isNumber(iNumber), 'even from another frame');
+    ok(!_.isNumber('1'), 'numeric strings are not numbers');
   });
 
   test("objects: isBoolean", function() {
     ok(!_.isBoolean(2), 'a number is not a boolean');
-   	ok(!_.isBoolean("string"), 'a string is not a boolean');
+    ok(!_.isBoolean("string"), 'a string is not a boolean');
     ok(!_.isBoolean("false"), 'the string "false" is not a boolean');
     ok(!_.isBoolean("true"), 'the string "true" is not a boolean');
     ok(!_.isBoolean(arguments), 'the arguments object is not a boolean');
diff --git a/underscore.js b/underscore.js
index 0db66d0b6..182070eb3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -714,7 +714,8 @@
     return eq(a, b, []);
   };
 
-  // Is a given array or object empty?
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
   _.isEmpty = function(obj) {
     if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
     for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
@@ -729,7 +730,7 @@
   // Is a given value an array?
   // Delegates to ECMA5's native Array.isArray
   _.isArray = nativeIsArray || function(obj) {
-    return toString.call(obj) === '[object Array]';
+    return toString.call(obj) == '[object Array]';
   };
 
   // Is a given variable an object?
@@ -739,22 +740,22 @@
 
   // Is a given variable an arguments object?
   _.isArguments = function(obj) {
-    return !!(obj && hasOwnProperty.call(obj, 'callee'));
+    return toString.call(obj) == '[object Arguments]' || !!(obj && hasOwnProperty.call(obj, 'callee'));
   };
 
   // Is a given value a function?
   _.isFunction = function(obj) {
-    return !!(obj && obj.constructor && obj.call && obj.apply);
+    return toString.call(obj) == '[object Function]';
   };
 
   // Is a given value a string?
   _.isString = function(obj) {
-    return !!(obj === '' || (obj && obj.charCodeAt && obj.substr));
+    return toString.call(obj) == '[object String]';
   };
 
   // Is a given value a number?
   _.isNumber = function(obj) {
-    return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
+    return toString.call(obj) == '[object Number]';
   };
 
   // Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
@@ -770,12 +771,12 @@
 
   // Is a given value a date?
   _.isDate = function(obj) {
-    return !!(obj && obj.getTimezoneOffset && obj.setUTCFullYear);
+    return toString.call(obj) == '[object Date]';
   };
 
   // Is the given value a regular expression?
   _.isRegExp = function(obj) {
-    return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
+    return toString.call(obj) == '[object RegExp]';
   };
 
   // Is a given value equal to null?

From 6d9d071b2f3c0d375517163005ff27a04383c4d6 Mon Sep 17 00:00:00 2001
From: Pier Paolo Ramon <ramonpierre@gmail.com>
Date: Wed, 5 Oct 2011 14:06:18 +0200
Subject: [PATCH 366/533] Implemented _.init as per #319

---
 underscore.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/underscore.js b/underscore.js
index 0db66d0b6..dfc875d3a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -323,6 +323,14 @@
     return slice.call(array, (index == null) || guard ? 1 : index);
   };
 
+  // Returns everything but the last entry of the array. Especcialy useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.init = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
   // Get the last element of an array. Passing **n** will return the last N
   // values in the array. The **guard** check allows it to work with `_.map`.
   _.last = function(array, n, guard) {

From dcda142655619b92ba2f3cc8b904d473ad426e29 Mon Sep 17 00:00:00 2001
From: Pier Paolo Ramon <ramonpierre@gmail.com>
Date: Wed, 5 Oct 2011 14:14:51 +0200
Subject: [PATCH 367/533] Tests for _.init

---
 test/arrays.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/arrays.js b/test/arrays.js
index 02e282b8a..3d5cc3327 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -24,6 +24,15 @@ $(document).ready(function() {
     equals(_.flatten(result).join(','), '2,3,2,3', 'works well with _.map');
   });
 
+  test("arrays: init", function() {
+    equals(_.init([1,2,3,4,5]).join(", "), "1, 2, 3, 4", 'working init()');
+    equals(_.init([1,2,3,4],2).join(", "), "1, 2", 'init can take an index');
+    var result = (function(){ return _(arguments).init(); })(1, 2, 3, 4);
+    equals(result.join(", "), "1, 2, 3", 'init works on arguments object');
+    result = _.map([[1,2,3],[1,2,3]], _.init);
+    equals(_.flatten(result).join(','), '1,2,1,2', 'init works with _.map');
+  });
+
   test("arrays: last", function() {
     equals(_.last([1,2,3]), 3, 'can pull out the last element of an array');
     equals(_.last([1,2,3], 0).join(', '), "", 'can pass an index to last');

From ac191a28a54302613d706af1f04236af8f195e5b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 5 Oct 2011 15:32:34 -0400
Subject: [PATCH 368/533] merging in #324 as _.initial

---
 test/arrays.js | 14 +++++++-------
 underscore.js  |  2 +-
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 3d5cc3327..80da71f6f 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -24,13 +24,13 @@ $(document).ready(function() {
     equals(_.flatten(result).join(','), '2,3,2,3', 'works well with _.map');
   });
 
-  test("arrays: init", function() {
-    equals(_.init([1,2,3,4,5]).join(", "), "1, 2, 3, 4", 'working init()');
-    equals(_.init([1,2,3,4],2).join(", "), "1, 2", 'init can take an index');
-    var result = (function(){ return _(arguments).init(); })(1, 2, 3, 4);
-    equals(result.join(", "), "1, 2, 3", 'init works on arguments object');
-    result = _.map([[1,2,3],[1,2,3]], _.init);
-    equals(_.flatten(result).join(','), '1,2,1,2', 'init works with _.map');
+  test("arrays: initial", function() {
+    equals(_.initial([1,2,3,4,5]).join(", "), "1, 2, 3, 4", 'working initial()');
+    equals(_.initial([1,2,3,4],2).join(", "), "1, 2", 'initial can take an index');
+    var result = (function(){ return _(arguments).initial(); })(1, 2, 3, 4);
+    equals(result.join(", "), "1, 2, 3", 'initial works on arguments object');
+    result = _.map([[1,2,3],[1,2,3]], _.initial);
+    equals(_.flatten(result).join(','), '1,2,1,2', 'initial works with _.map');
   });
 
   test("arrays: last", function() {
diff --git a/underscore.js b/underscore.js
index dfc875d3a..e183d070a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -327,7 +327,7 @@
   // the arguments object. Passing **n** will return all the values in
   // the array, excluding the last N. The **guard** check allows it to work with
   // `_.map`.
-  _.init = function(array, n, guard) {
+  _.initial = function(array, n, guard) {
     return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
   };
 

From cc6a9d494d77ff910064d17719848445c05642ee Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 5 Oct 2011 16:19:00 -0400
Subject: [PATCH 369/533] Merging in escaping for Underscore templates, using
 <%- syntax. Sorry Eco.

---
 test/utility.js | 4 ++++
 underscore.js   | 6 +++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index 58368a13e..976b3b996 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -81,6 +81,10 @@ $(document).ready(function() {
     var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.');
     equals(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
 
+    var template = _.template("<i><%- value %></i>");
+    var result = template({value: "<script>"});
+    equals(result, '<i>&lt;script&gt;</i>');
+
     if (!$.browser.msie) {
       var fromHTML = _.template($('#template').html());
       equals(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
diff --git a/underscore.js b/underscore.js
index 1b2058f82..913278837 100644
--- a/underscore.js
+++ b/underscore.js
@@ -816,7 +816,7 @@
     for (var i = 0; i < n; i++) iterator.call(context, i);
   };
 
-  // Escape string for HTML
+  // Escape a string for HTML interpolation.
   _.escape = function(string) {
     return (''+string).replace(/&(?!\w+;|#\d+;|#x[\da-f]+;)/gi, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
   };
@@ -842,7 +842,7 @@
   _.templateSettings = {
     evaluate    : /<%([\s\S]+?)%>/g,
     interpolate : /<%=([\s\S]+?)%>/g,
-    encode      : /<%==([\s\S]+?)%>/g
+    escape      : /<%-([\s\S]+?)%>/g
   };
 
   // JavaScript micro-templating, similar to John Resig's implementation.
@@ -854,7 +854,7 @@
       'with(obj||{}){__p.push(\'' +
       str.replace(/\\/g, '\\\\')
          .replace(/'/g, "\\'")
-         .replace(c.encode, function(match, code) {
+         .replace(c.escape, function(match, code) {
            return "',_.escape(" + code.replace(/\\'/g, "'") + "),'";
          })
          .replace(c.interpolate, function(match, code) {

From 7304084e94841832ff00a3b4c4a7d3a79eb35e04 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 5 Oct 2011 17:30:20 -0400
Subject: [PATCH 370/533] Underscore.js 1.2.0

---
 docs/underscore.html | 226 +++++++++++++++++++++++++++----------------
 index.html           |  87 ++++++++++++++---
 package.json         |   2 +-
 underscore-min.js    |  44 +++++----
 underscore.js        |  20 ++--
 5 files changed, 248 insertions(+), 131 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index fdcf8166c..726b8976a 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.1.7
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.0
 (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -27,7 +27,7 @@ global object.</p>             </td>             <td class="code">
     <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.1.7&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -145,6 +145,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">computed</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="o">:</span> <span class="nx">value</span><span class="p">;</span>
@@ -153,13 +154,26 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="kc">Infinity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">computed</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="o">:</span> <span class="nx">value</span><span class="p">;</span>
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Shuffle an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">shuffle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">shuffled</span> <span class="o">=</span> <span class="p">[],</span> <span class="nx">rand</span><span class="p">;</span>
+    <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
+        <span class="nx">shuffled</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+      <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+        <span class="nx">rand</span> <span class="o">=</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">floor</span><span class="p">(</span><span class="nb">Math</span><span class="p">.</span><span class="nx">random</span><span class="p">()</span> <span class="o">*</span> <span class="p">(</span><span class="nx">index</span> <span class="o">+</span> <span class="mi">1</span><span class="p">));</span>
+        <span class="nx">shuffled</span><span class="p">[</span><span class="nx">index</span><span class="p">]</span> <span class="o">=</span> <span class="nx">shuffled</span><span class="p">[</span><span class="nx">rand</span><span class="p">];</span>
+        <span class="nx">shuffled</span><span class="p">[</span><span class="nx">rand</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
+      <span class="p">}</span>
+    <span class="p">});</span>
+    <span class="k">return</span> <span class="nx">shuffled</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -169,14 +183,14 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Groups the object's values by a criterion produced by an iterator</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">groupBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Groups the object's values by a criterion produced by an iterator</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">groupBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">);</span>
       <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">||</span> <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">[])).</span><span class="nx">push</span><span class="p">(</span><span class="nx">value</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -185,46 +199,58 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
 with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Returns everything but the last entry of the array. Especcialy useful on
+the arguments object. Passing <strong>n</strong> will return all the values in
+the array, excluding the last N. The <strong>guard</strong> check allows it to work with
+<code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">initial</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="p">((</span><span class="nx">n</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">n</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Get the last element of an array. Passing <strong>n</strong> will return the last N
+values in the array. The <strong>guard</strong> check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
 check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the last element of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.
-Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
+Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">[];</span>
+    <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">initial</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="mi">0</span> <span class="o">==</span> <span class="nx">i</span> <span class="o">||</span> <span class="p">(</span><span class="nx">isSorted</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">last</span><span class="p">(</span><span class="nx">memo</span><span class="p">)</span> <span class="o">!=</span> <span class="nx">el</span> <span class="o">:</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">el</span><span class="p">)))</span> <span class="p">{</span>
+        <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">el</span><span class="p">;</span>
+        <span class="nx">result</span><span class="p">[</span><span class="nx">result</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">];</span>
+      <span class="p">}</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
+    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
 the passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">union</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
 passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersection</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
@@ -232,17 +258,17 @@ passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Take the difference between one array and another.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Take the difference between one array and another.
 Only the elements present in just the first array will remain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.
@@ -257,13 +283,13 @@ for <strong>isSorted</strong> to use binary search.</p>             </td>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
@@ -282,7 +308,7 @@ the native Python <code>range()</code> function. See
     <span class="p">}</span>
 
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.
 We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
@@ -291,27 +317,27 @@ We check for <code>func.bind</code> first, to fail fast when <code>func</code> i
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Internal function used to implement <code>_.throttle</code> and <code>_.debounce</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">limit</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="nx">debounce</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Internal function used to implement <code>_.throttle</code> and <code>_.debounce</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">limit</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="nx">debounce</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">timeout</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">,</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
@@ -322,14 +348,14 @@ cleared.</p>             </td>             <td class="code">               <div
       <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span><span class="p">)</span> <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span> <span class="o">||</span> <span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
 during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">false</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
 be triggered. The function will be called after it stops being called for
 N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
 often you call it. Useful for lazy initialization.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">once</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">ran</span> <span class="o">=</span> <span class="kc">false</span><span class="p">,</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -337,14 +363,14 @@ often you call it. Useful for lazy initialization.</p>             </td>
       <span class="nx">ran</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -354,110 +380,141 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">names</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="nx">names</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">key</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">names</span><span class="p">.</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Check object identity.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Different types?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">atype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">btype</span> <span class="o">=</span> <span class="k">typeof</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!=</span> <span class="nx">btype</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Basic equality test (watch out for coercions).</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>One is falsy and the other truthy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="o">!</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">a</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>One of them implements an isEqual()?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">)</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Check dates' integer values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Both are NaN?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Compare regular expressions.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span>
-      <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">global</span>     <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span>  <span class="o">===</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>If a is not an object by this point, we can't handle it.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">atype</span> <span class="o">!==</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Check for different array lengths before comparing contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Nothing else worked, deep compare the contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">aKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">bKeys</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Different object sizes?</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">aKeys</span><span class="p">.</span><span class="nx">length</span> <span class="o">!=</span> <span class="nx">bKeys</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Recursive comparison of contents.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="o">||</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
-    <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
+See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Compare object types.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">typeA</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">a</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="k">typeof</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Optimization; ensure that both values are truthy or falsy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">a</span> <span class="o">!=</span> <span class="o">!</span><span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p><code>NaN</code> values are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare string objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isStringA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isStringB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isStringA</span> <span class="o">||</span> <span class="nx">isStringB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isStringA</span> <span class="o">&amp;&amp;</span> <span class="nx">isStringB</span> <span class="o">&amp;&amp;</span> <span class="nb">String</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Compare number objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isNumberA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isNumberB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isNumberA</span> <span class="o">||</span> <span class="nx">isNumberB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isNumberA</span> <span class="o">&amp;&amp;</span> <span class="nx">isNumberB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Compare boolean objects by value. The value of <code>true</code> is 1; the value of <code>false</code> is 0.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isBooleanA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isBooleanB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isBooleanA</span> <span class="o">||</span> <span class="nx">isBooleanB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isBooleanA</span> <span class="o">&amp;&amp;</span> <span class="nx">isBooleanB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Compare dates by their millisecond values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isDateA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isDateB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isDateA</span> <span class="o">||</span> <span class="nx">isDateB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isDateA</span> <span class="o">&amp;&amp;</span> <span class="nx">isDateB</span> <span class="o">&amp;&amp;</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Compare RegExps by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isRegExpA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isRegExpB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isRegExpA</span> <span class="o">||</span> <span class="nx">isRegExpB</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Ensure commutative equality for RegExps.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">return</span> <span class="nx">isRegExpA</span> <span class="o">&amp;&amp;</span> <span class="nx">isRegExpB</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">source</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">global</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">&amp;&amp;</span>
+             <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span><span class="p">;</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Ensure that both values are objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
+adapted from ES 5.1 section 15.12.3, abstract operation <code>JO</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">stack</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of unique nested
+structures.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">stack</span><span class="p">[</span><span class="nx">length</span><span class="p">]</span> <span class="o">==</span> <span class="nx">a</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">||</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Compare object lengths to determine if a deep comparison is necessary.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="nx">size</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+      <span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Deep compare array-like object contents, ignoring non-numeric properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">while</span> <span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Ensure commutative equality for sparse arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+        <span class="p">}</span>
+      <span class="p">}</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+        <span class="p">}</span>
+      <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
+          <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="k">break</span><span class="p">;</span>
+        <span class="p">}</span>
+        <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
+      <span class="p">}</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Remove the first object from the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">();</span>
+    <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="p">[]);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
 that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span> <span class="o">||</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="o">+</span><span class="nx">string</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&amp;(?!\w+;|#\d+;|#x[\da-f]+;)/gi</span><span class="p">,</span> <span class="s1">&#39;&amp;amp;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&lt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;lt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&gt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;gt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;quot;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;#x27;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\//g</span><span class="p">,</span><span class="s1">&#39;&amp;#x2F;&#39;</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
-    <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+    <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span><span class="p">,</span>
+    <span class="nx">escape</span>      <span class="o">:</span> <span class="sr">/&lt;%-([\s\S]+?)%&gt;/g</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -465,6 +522,9 @@ and correctly escapes quotes within interpolated code.</p>             </td>
       <span class="s1">&#39;with(obj||{}){__p.push(\&#39;&#39;</span> <span class="o">+</span>
       <span class="nx">str</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\/g</span><span class="p">,</span> <span class="s1">&#39;\\\\&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s2">&quot;\\&#39;&quot;</span><span class="p">)</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">escape</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+           <span class="k">return</span> <span class="s2">&quot;&#39;,_.escape(&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;),&#39;&quot;</span><span class="p">;</span>
+         <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">interpolate</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
            <span class="k">return</span> <span class="s2">&quot;&#39;,&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;,&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
@@ -478,31 +538,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index c33cc95d5..bf08b2dd7 100644
--- a/index.html
+++ b/index.html
@@ -49,6 +49,14 @@
       td {
         padding: 2px 12px 2px 0;
       }
+    ul {
+      list-style-type: circle;
+      padding: 0 0 0 20px;
+    }
+      li {
+        width: 500px;
+        margin-bottom: 10px;
+      }
     code, pre, tt {
       font-family: Monaco, Consolas, "Lucida Console", monospace;
       font-size: 12px;
@@ -118,11 +126,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.1.7)</a></td>
+        <td><a href="underscore.js">Development Version (1.2.0)</a></td>
         <td><i>28kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.1.7)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.2.0)</a></td>
         <td><i>3kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -149,7 +157,7 @@
     <p>
       <b>Arrays</b>
       <br />
-      <span class="methods"><a href="#first">first</a>, <a href="#rest">rest</a>, <a href="#last">last</a>,
+      <span class="methods"><a href="#first">first</a>, <a href="#initial">initial</a>, <a href="#last">last</a>, <a href="#rest">rest</a>,
       <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, 
       <a href="#union">union</a>, <a href="#intersection">intersection</a>, <a href="#difference">difference</a>, 
       <a href="#uniq">uniq</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a>,
@@ -468,7 +476,8 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
       <p id="shuffle">
         <b class="header">shuffle</b><code>_.shuffle(list)</code>
         <br />
-        Returns a shuffled copy of <b>list</b>.
+        Returns a shuffled copy of the <b>list</b>, using a version of the 
+        <a href="http://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle">Fisher-Yates shuffle</a>.
       </p>
       <pre>
 _.shuffle([1, 2, 3, 4, 5, 6]);
@@ -512,6 +521,29 @@ _.size({one : 1, two : 2, three : 3});
       <pre>
 _.first([5, 4, 3, 2, 1]);
 =&gt; 5
+</pre>
+
+      <p id="initial">
+        <b class="header">initial</b><code>_.initial(array, [n])</code>
+        <br />
+        Returns everything but the last entry of the array. Especially useful on
+        the arguments object. Pass <b>n</b> to exclude the last <b>n</b> elements
+        from the result.
+      </p>
+      <pre>
+_.initial([5, 4, 3, 2, 1]);
+=&gt; [5, 4, 3, 2]
+</pre>
+
+      <p id="last">
+        <b class="header">last</b><code>_.last(array, [n])</code>
+        <br />
+        Returns the last element of an <b>array</b>. Passing <b>n</b> will return
+        the last <b>n</b> elements of the array.
+      </p>
+      <pre>
+_.last([5, 4, 3, 2, 1]);
+=&gt; 1
 </pre>
 
       <p id="rest">
@@ -524,16 +556,6 @@ _.first([5, 4, 3, 2, 1]);
       <pre>
 _.rest([5, 4, 3, 2, 1]);
 =&gt; [4, 3, 2, 1]
-</pre>
-
-      <p id="last">
-        <b class="header">last</b><code>_.last(array)</code>
-        <br />
-        Returns the last element of an <b>array</b>.
-      </p>
-      <pre>
-_.last([5, 4, 3, 2, 1]);
-=&gt; 1
 </pre>
 
       <p id="compact">
@@ -1162,7 +1184,8 @@ _.uniqueId('contact_');
         for rendering. Useful for rendering complicated bits of HTML from JSON
         data sources. Template functions can both interpolate variables, using<br />
         <tt>&lt;%= &hellip; %&gt;</tt>, as well as execute arbitrary JavaScript code, with
-        <tt>&lt;% &hellip; %&gt;</tt>. When you evaluate a template function, pass in a
+        <tt>&lt;% &hellip; %&gt;</tt>. If you wish to interpolate a value, and have
+        it be HTML-escaped, use <tt>&lt;%- &hellip; %&gt;</tt> When you evaluate a template function, pass in a
         <b>context</b> object that has properties corresponding to the template's free
         variables. If you're writing a one-off, you can pass the <b>context</b>
         object as the second parameter to <b>template</b> in order to render
@@ -1175,7 +1198,11 @@ compiled({name : 'moe'});
 
 var list = "&lt;% _.each(people, function(name) { %&gt; &lt;li&gt;&lt;%= name %&gt;&lt;/li&gt; &lt;% }); %&gt;";
 _.template(list, {people : ['moe', 'curly', 'larry']});
-=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"</pre>
+=&gt; "&lt;li&gt;moe&lt;/li&gt;&lt;li&gt;curly&lt;/li&gt;&lt;li&gt;larry&lt;/li&gt;"
+
+var template = _.template("&lt;b&gt;&lt;%- value %&gt;&lt;/b&gt;");
+template({value : '&lt;script&gt;'});
+=&gt; "&lt;b&gt;&amp;lt;script&amp;gt;&lt;/b&gt;"</pre>
 
       <p>
         You can also use <tt>print</tt> from within JavaScript code.  This is
@@ -1315,6 +1342,34 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.2.0</b> &mdash; <small><i>Oct. 5, 2011</i></small><br />
+        <ul>
+          <li>
+            Underscore templates now support HTML escaping interpolations, using 
+            <tt>&lt;%- ... %&gt;</tt> syntax. The <tt>_.isEqual</tt> function now 
+            supports true deep equality comparisons, with checks for cyclic structures,
+            thanks to Kit Cambridge.
+          </li>
+          <li>
+            Ryan Tenney contributed <tt>_.shuffle</tt>, which uses a modified 
+            Fisher-Yates to give you a shuffled copy of an array. 
+          </li>
+          <li>
+            <tt>_.uniq</tt> can now be passed an optional iterator, to determine by 
+            what criteria an object should be considered unique.
+          </li>
+          <li>
+            <tt>_.last</tt> now takes an optional argument which will return the last
+            N elements of the list.
+          </li>
+          <li>
+            A new <tt>_.initial</tt> function was added, as a mirror of <tt>_.rest</tt>,
+            which returns all the initial values of a list (except the last N). 
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.1.7</b> &mdash; <small><i>July 13, 2011</i></small><br />
         Added <tt>_.groupBy</tt>, which aggregates a collection into groups of like items.
diff --git a/package.json b/package.json
index 08396c4d9..eb4eee826 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.1.7"
+  "version"       : "1.2.0"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 5983694cf..caa773615 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,27 +1,29 @@
-// Underscore.js 1.1.7
+// Underscore.js 1.2.0
 // (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
-(function(){var p=this,C=p._,m={},i=Array.prototype,n=Object.prototype,f=i.slice,D=i.unshift,E=n.toString,l=n.hasOwnProperty,s=i.forEach,t=i.map,u=i.reduce,v=i.reduceRight,w=i.filter,x=i.every,y=i.some,o=i.indexOf,z=i.lastIndexOf;n=Array.isArray;var F=Object.keys,q=Function.prototype.bind,b=function(a){return new j(a)};typeof module!=="undefined"&&module.exports?(module.exports=b,b._=b):p._=b;b.VERSION="1.1.7";var h=b.each=b.forEach=function(a,c,b){if(a!=null)if(s&&a.forEach===s)a.forEach(c,b);else if(a.length===
-+a.length)for(var e=0,k=a.length;e<k;e++){if(e in a&&c.call(b,a[e],e,a)===m)break}else for(e in a)if(l.call(a,e)&&c.call(b,a[e],e,a)===m)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(t&&a.map===t)return a.map(c,b);h(a,function(a,g,G){e[e.length]=c.call(b,a,g,G)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var k=d!==void 0;a==null&&(a=[]);if(u&&a.reduce===u)return e&&(c=b.bind(c,e)),k?a.reduce(c,d):a.reduce(c);h(a,function(a,b,f){k?d=c.call(e,d,a,b,f):(d=a,k=!0)});if(!k)throw new TypeError("Reduce of empty array with no initial value");
-return d};b.reduceRight=b.foldr=function(a,c,d,e){a==null&&(a=[]);if(v&&a.reduceRight===v)return e&&(c=b.bind(c,e)),d!==void 0?a.reduceRight(c,d):a.reduceRight(c);a=(b.isArray(a)?a.slice():b.toArray(a)).reverse();return b.reduce(a,c,d,e)};b.find=b.detect=function(a,c,b){var e;A(a,function(a,g,f){if(c.call(b,a,g,f))return e=a,!0});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.filter===w)return a.filter(c,b);h(a,function(a,g,f){c.call(b,a,g,f)&&(e[e.length]=a)});return e};
-b.reject=function(a,c,b){var e=[];if(a==null)return e;h(a,function(a,g,f){c.call(b,a,g,f)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=!0;if(a==null)return e;if(x&&a.every===x)return a.every(c,b);h(a,function(a,g,f){if(!(e=e&&c.call(b,a,g,f)))return m});return e};var A=b.some=b.any=function(a,c,d){c=c||b.identity;var e=!1;if(a==null)return e;if(y&&a.some===y)return a.some(c,d);h(a,function(a,b,f){if(e|=c.call(d,a,b,f))return m});return!!e};b.include=b.contains=function(a,c){var b=
-!1;if(a==null)return b;if(o&&a.indexOf===o)return a.indexOf(c)!=-1;A(a,function(a){if(b=a===c)return!0});return b};b.invoke=function(a,c){var d=f.call(arguments,2);return b.map(a,function(a){return(c.call?c||a:a[c]).apply(a,d)})};b.pluck=function(a,c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);var e={computed:-Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,
-c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);var e={computed:Infinity};h(a,function(a,b,f){b=c?c.call(d,a,b,f):a;b<e.computed&&(e={value:a,computed:b})});return e.value};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(a,b,f){return{value:a,criteria:c.call(d,a,b,f)}}).sort(function(a,b){var c=a.criteria,d=b.criteria;return c<d?-1:c>d?1:0}),"value")};b.groupBy=function(a,b){var d={};h(a,function(a,f){var g=b(a,f);(d[g]||(d[g]=[])).push(a)});return d};b.sortedIndex=function(a,c,d){d||
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+J++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape,function(a,b){return"',_.escape("+b.replace(/\\'/g,"'")+"),'"}).replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(a,
+b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",d=new Function("obj",d);return c?d(c):d};var m=function(a){this._wrapped=a};b.prototype=m.prototype;var t=function(a,c){return c?b(a).chain():a},I=function(a,c){m.prototype[a]=function(){var a=i.call(arguments);G.call(a,this._wrapped);return t(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),
+function(a){var b=k[a];m.prototype[a]=function(){b.apply(this._wrapped,arguments);return t(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];m.prototype[a]=function(){return t(b.apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=true;return this};m.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 913278837..eee91067d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.1.7
+//     Underscore.js 1.2.0
 //     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -60,7 +60,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.1.7';
+  _.VERSION = '1.2.0';
 
   // Collection Functions
   // --------------------
@@ -315,14 +315,6 @@
     return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
   };
 
-  // Returns everything but the first entry of the array. Aliased as `tail`.
-  // Especially useful on the arguments object. Passing an **index** will return
-  // the rest of the values in the array from that index onward. The **guard**
-  // check allows it to work with `_.map`.
-  _.rest = _.tail = function(array, index, guard) {
-    return slice.call(array, (index == null) || guard ? 1 : index);
-  };
-
   // Returns everything but the last entry of the array. Especcialy useful on
   // the arguments object. Passing **n** will return all the values in
   // the array, excluding the last N. The **guard** check allows it to work with
@@ -337,6 +329,14 @@
     return (n != null) && !guard ? slice.call(array, array.length - n) : array[array.length - 1];
   };
 
+  // Returns everything but the first entry of the array. Aliased as `tail`.
+  // Especially useful on the arguments object. Passing an **index** will return
+  // the rest of the values in the array from that index onward. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = function(array, index, guard) {
+    return slice.call(array, (index == null) || guard ? 1 : index);
+  };
+
   // Trim out all falsy values from an array.
   _.compact = function(array) {
     return _.filter(array, function(value){ return !!value; });

From dc9ec7ed389f355aced5de53d248c4599f72f192 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 5 Oct 2011 17:32:54 -0400
Subject: [PATCH 371/533] updating filesizes

---
 index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index bf08b2dd7..b1f381c7b 100644
--- a/index.html
+++ b/index.html
@@ -127,11 +127,11 @@
     <table>
       <tr>
         <td><a href="underscore.js">Development Version (1.2.0)</a></td>
-        <td><i>28kb, Uncompressed with Comments</i></td>
+        <td><i>32kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
         <td><a href="underscore-min.js">Production Version (1.2.0)</a></td>
-        <td><i>3kb, Minified and Gzipped</i></td>
+        <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
 

From 0ed3b65df163381f7d14184f399799985b77bcb0 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 5 Oct 2011 17:35:54 -0400
Subject: [PATCH 372/533] fixing bullet points.

---
 index.html | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index b1f381c7b..d6cddd49a 100644
--- a/index.html
+++ b/index.html
@@ -1346,11 +1346,14 @@ _([1, 2, 3]).value();
         <b class="header">1.2.0</b> &mdash; <small><i>Oct. 5, 2011</i></small><br />
         <ul>
           <li>
-            Underscore templates now support HTML escaping interpolations, using 
-            <tt>&lt;%- ... %&gt;</tt> syntax. The <tt>_.isEqual</tt> function now 
+            The <tt>_.isEqual</tt> function now 
             supports true deep equality comparisons, with checks for cyclic structures,
             thanks to Kit Cambridge.
           </li>
+          <li>
+            Underscore templates now support HTML escaping interpolations, using 
+            <tt>&lt;%- ... %&gt;</tt> syntax. 
+          </li>
           <li>
             Ryan Tenney contributed <tt>_.shuffle</tt>, which uses a modified 
             Fisher-Yates to give you a shuffled copy of an array. 

From f2a64227fdd72a5ad8aaee03e1cab81f13ae130e Mon Sep 17 00:00:00 2001
From: Kevin Malakoff <xmann.intl@gmail.com>
Date: Thu, 6 Oct 2011 15:50:51 +0200
Subject: [PATCH 373/533] Reimplemented _.isEqual tests and patch in a fresh
 branch.

---
 test/objects.js | 52 +++++++++++++++++++++++++++++++++++++++++++++++++
 underscore.js   | 13 +++++++++----
 2 files changed, 61 insertions(+), 4 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index e05c0ddc5..c131d920b 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -295,6 +295,58 @@ $(document).ready(function() {
     ok(_.isEqual(isEqualObjClone, isEqualObj), 'Commutative equality is implemented for objects with custom `isEqual` methods');
     ok(!_.isEqual(isEqualObj, {}), 'Objects that do not implement equivalent `isEqual` methods are not equal');
     ok(!_.isEqual({}, isEqualObj), 'Commutative equality is implemented for objects with different `isEqual` methods');
+
+    // Custom `isEqual` methods - comparing different types
+    LocalizedString = (function() {
+      function LocalizedString(id) { this.id = id; this.string = (this.id===10)? 'Bonjour': ''; }
+      LocalizedString.prototype.isEqual = function(that) {
+        if (_.isString(that)) return this.string == that;
+        else if (that instanceof LocalizedString) return this.id == that.id;
+        return false;
+      };
+      return LocalizedString;
+    })();
+    var localized_string1 = new LocalizedString(10), localized_string2 = new LocalizedString(10), localized_string3 = new LocalizedString(11);
+    ok(_.isEqual(localized_string1, localized_string2), 'comparing same typed instances with same ids');
+    ok(!_.isEqual(localized_string1, localized_string3), 'comparing same typed instances with different ids');
+    ok(_.isEqual(localized_string1, 'Bonjour'), 'comparing different typed instances with same values');
+    ok(_.isEqual('Bonjour', localized_string1), 'comparing different typed instances with same values');
+    ok(!_.isEqual('Bonjour', localized_string3), 'comparing two localized strings with different ids');
+    ok(!_.isEqual(localized_string1, 'Au revoir'), 'comparing different typed instances with different values');
+    ok(!_.isEqual('Au revoir', localized_string1), 'comparing different typed instances with different values');
+
+    // Custom `isEqual` methods - comparing with serialized data
+    Date.prototype.toJSON = function() {
+      return {
+        _type:'Date',
+        year:this.getUTCFullYear(),
+        month:this.getUTCMonth(),
+        day:this.getUTCDate(),
+        hours:this.getUTCHours(),
+        minutes:this.getUTCMinutes(),
+        seconds:this.getUTCSeconds()
+      };
+    };
+    Date.prototype.isEqual = function(that) {
+      var this_date_components = this.toJSON();
+      var that_date_components = (that instanceof Date) ? that.toJSON() : that;
+      delete this_date_components['_type']; delete that_date_components['_type']
+      return _.isEqual(this_date_components, that_date_components);
+    };
+
+    var date = new Date();
+    var date_json = {
+      _type:'Date',
+      year:date.getUTCFullYear(),
+      month:date.getUTCMonth(),
+      day:date.getUTCDate(),
+      hours:date.getUTCHours(),
+      minutes:date.getUTCMinutes(),
+      seconds:date.getUTCSeconds()
+    };
+
+    ok(_.isEqual(date_json, date), 'serialized date matches date');
+    ok(_.isEqual(date, date_json), 'date matches serialized date');
   });
 
   test("objects: isEmpty", function() {
diff --git a/underscore.js b/underscore.js
index eee91067d..610533673 100644
--- a/underscore.js
+++ b/underscore.js
@@ -635,7 +635,15 @@
     // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
     if (a === b) return a !== 0 || 1 / a == 1 / b;
     // A strict comparison is necessary because `null == undefined`.
-    if (a == null) return a === b;
+    if ((a == null) || (b == null)) return a === b;
+    // Either one is undefined
+    if ((a === void 0) || (b === void 0)) return false;
+    // Unwrap any wrapped objects.
+    if (a._chain) a = a._wrapped;
+    if (b._chain) b = b._wrapped;
+    // One of them implements an isEqual()
+    if (a.isEqual) return a.isEqual(b);
+    if (b.isEqual) return b.isEqual(a);
     // Compare object types.
     var typeA = typeof a;
     if (typeA != typeof b) return false;
@@ -667,9 +675,6 @@
     }
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
-    // Unwrap any wrapped objects.
-    if (a._chain) a = a._wrapped;
-    if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
     if (_.isFunction(a.isEqual)) return a.isEqual(b);
     // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is

From 81c9dc2f1fdd324846ddaa0c0fe255be114f91e6 Mon Sep 17 00:00:00 2001
From: Kevin Malakoff <xmann.intl@gmail.com>
Date: Thu, 6 Oct 2011 18:23:42 +0200
Subject: [PATCH 374/533] yuchi spotted duplication

---
 underscore.js | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index 610533673..73ffa58ce 100644
--- a/underscore.js
+++ b/underscore.js
@@ -641,9 +641,9 @@
     // Unwrap any wrapped objects.
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
-    // One of them implements an isEqual()
-    if (a.isEqual) return a.isEqual(b);
-    if (b.isEqual) return b.isEqual(a);
+    // Invoke a custom `isEqual` method if one is provided.
+    if (_.isFunction(a.isEqual)) return a.isEqual(b);
+    if (_.isFunction(b.isEqual)) return b.isEqual(a);
     // Compare object types.
     var typeA = typeof a;
     if (typeA != typeof b) return false;
@@ -675,8 +675,6 @@
     }
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
-    // Invoke a custom `isEqual` method if one is provided.
-    if (_.isFunction(a.isEqual)) return a.isEqual(b);
     // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
     // adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
     var length = stack.length;

From 69bb2e03fab1dae907a64b275204074e20f165f3 Mon Sep 17 00:00:00 2001
From: Kevin Malakoff <xmann.intl@gmail.com>
Date: Thu, 6 Oct 2011 18:51:24 +0200
Subject: [PATCH 375/533] Reducant check spotted by kitcambridge.

---
 underscore.js | 2 --
 1 file changed, 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 73ffa58ce..d19e26960 100644
--- a/underscore.js
+++ b/underscore.js
@@ -636,8 +636,6 @@
     if (a === b) return a !== 0 || 1 / a == 1 / b;
     // A strict comparison is necessary because `null == undefined`.
     if ((a == null) || (b == null)) return a === b;
-    // Either one is undefined
-    if ((a === void 0) || (b === void 0)) return false;
     // Unwrap any wrapped objects.
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;

From 2085963d190b7d69331a99fb25a93d31d002bd4c Mon Sep 17 00:00:00 2001
From: Jason Davies <jason@jasondavies.com>
Date: Sat, 15 Oct 2011 11:09:49 +0100
Subject: [PATCH 376/533] Fix typo.

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index ab31da513..f95bf17bd 100644
--- a/index.html
+++ b/index.html
@@ -776,7 +776,7 @@ _.functions(_);
         <b class="header">extend</b><code>_.extend(destination, *sources)</code>
         <br />
         Copy all of the properties in the <b>source</b> objects over to the
-        <b>destination</b> object. It's in-order, to the last source will override
+        <b>destination</b> object. It's in-order, so the last source will override
         properties of the same name in previous arguments.
       </p>
       <pre>

From e6381d8ee7c82f838bfcba6cdeccfca924e65041 Mon Sep 17 00:00:00 2001
From: jrburke <jrburke@gmail.com>
Date: Mon, 17 Oct 2011 17:58:03 -0700
Subject: [PATCH 377/533] Opt in to AMD registration.

---
 underscore.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/underscore.js b/underscore.js
index d19e26960..ba9b8aea3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -57,6 +57,19 @@
   } else {
     // Exported as a string, for Closure Compiler "advanced" mode.
     root['_'] = _;
+
+    // Register as a module with AMD. Use a named module since underscore
+    // can be used in optimization schemes that do not understand anonymous
+    // modules, and the if it is used on a page with an AMD loader, a load
+    // error could occur. This work is done in addition to exporting a global
+    // on root since the web page could use an AMD loader to load the module
+    // but still want to use the global reference. Test pages are a good
+    // example.
+    if (typeof define === 'function' && define.amd) {
+      define('underscore', function() {
+        return _;
+      });
+    }
   }
 
   // Current version.

From 0513f60b63f08636dc0908730c7d4334aa322773 Mon Sep 17 00:00:00 2001
From: Tony Lukasavage <anthony.lukasavage@gmail.com>
Date: Tue, 18 Oct 2011 11:50:46 -0300
Subject: [PATCH 378/533] add support for CommonJS implementations that do not
 support modules.exports.

---
 underscore.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/underscore.js b/underscore.js
index d19e26960..f09221580 100644
--- a/underscore.js
+++ b/underscore.js
@@ -54,6 +54,8 @@
   if (typeof module !== 'undefined' && module.exports) {
     module.exports = _;
     _._ = _;
+  } else if (exports !== 'undefined') {
+    exports._ = _;
   } else {
     // Exported as a string, for Closure Compiler "advanced" mode.
     root['_'] = _;

From 1054e24c4fe417f98adc3caeb8ec9cce7b39cdd1 Mon Sep 17 00:00:00 2001
From: Tony Lukasavage <anthony.lukasavage@gmail.com>
Date: Tue, 18 Oct 2011 13:27:18 -0300
Subject: [PATCH 379/533] made the exports check safe

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index f09221580..47a330b06 100644
--- a/underscore.js
+++ b/underscore.js
@@ -54,7 +54,7 @@
   if (typeof module !== 'undefined' && module.exports) {
     module.exports = _;
     _._ = _;
-  } else if (exports !== 'undefined') {
+  } else if (typeof exports !== 'undefined' && exports) {
     exports._ = _;
   } else {
     // Exported as a string, for Closure Compiler "advanced" mode.

From 6123870dabb2b1ff8dc52be66c76de0248d78ddc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Oct 2011 15:02:06 -0400
Subject: [PATCH 380/533] Fixes #336 ... adds find alias for detect, and
 reorders to make the ES5 versions canonical.

---
 index.html | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/index.html b/index.html
index 5faace35f..3353f7d0f 100644
--- a/index.html
+++ b/index.html
@@ -144,7 +144,7 @@
       <br />
       <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>,
       <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>,
-      <a href="#detect">detect</a>, <a href="#select">select</a>,
+      <a href="#find">find</a>, <a href="#filter">filter</a>,
       <a href="#reject">reject</a>, <a href="#all">all</a>,
       <a href="#any">any</a>, <a href="#include">include</a>,
       <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
@@ -312,8 +312,9 @@ var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []);
 =&gt; [4, 5, 2, 3, 0, 1]
 </pre>
 
-      <p id="detect">
-        <b class="header">detect</b><code>_.detect(list, iterator, [context])</code>
+      <p id="find">
+        <b class="header">find</b><code>_.find(list, iterator, [context])</code>
+        <span class="alias">Alias: <b>detect</b></span>
         <br />
         Looks through each value in the <b>list</b>, returning the first one that
         passes a truth test (<b>iterator</b>). The function returns as
@@ -321,20 +322,20 @@ var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []);
         entire list.
       </p>
       <pre>
-var even = _.detect([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+var even = _.find([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 =&gt; 2
 </pre>
 
-      <p id="select">
-        <b class="header">select</b><code>_.select(list, iterator, [context])</code>
-        <span class="alias">Alias: <b>filter</b></span>
+      <p id="filter">
+        <b class="header">filter</b><code>_.filter(list, iterator, [context])</code>
+        <span class="alias">Alias: <b>select</b></span>
         <br />
         Looks through each value in the <b>list</b>, returning an array of all
         the values that pass a truth test (<b>iterator</b>). Delegates to the
         native <b>filter</b> method, if it exists.
       </p>
       <pre>
-var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
+var evens = _.filter([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
 =&gt; [2, 4, 6]
 </pre>
 
@@ -342,7 +343,7 @@ var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
         <b class="header">reject</b><code>_.reject(list, iterator, [context])</code>
         <br />
         Returns the values in <b>list</b> without the elements that the truth
-        test (<b>iterator</b>) passes. The opposite of <b>select</b>.
+        test (<b>iterator</b>) passes. The opposite of <b>filter</b>.
       </p>
       <pre>
 var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
@@ -951,7 +952,7 @@ _.clone({name : 'moe'});
       </p>
       <pre>
 _([1,2,3,200]).chain().
-  select(function(num) { return num % 2 == 0; }).
+  filter(function(num) { return num % 2 == 0; }).
   tap(console.log).
   map(function(num) { return num * num }).
   value();

From e79586515c5f635650afc32976826e01463dcd1d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Oct 2011 16:07:23 -0400
Subject: [PATCH 381/533] Issue #329 -- significant change to _.isEqual
 semantics.

---
 test/objects.js | 12 ++++++------
 underscore.js   | 41 +++++++++++++++--------------------------
 2 files changed, 21 insertions(+), 32 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index c131d920b..5fc4b6a0a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -154,8 +154,8 @@ $(document).ready(function() {
     ok(_.isEqual({}, {}), "Empty object literals are equal");
     ok(_.isEqual([], []), "Empty array literals are equal");
     ok(_.isEqual([{}], [{}]), "Empty nested arrays and objects are equal");
-    ok(_.isEqual({length: 0}, []), "Array-like objects and arrays are equal");
-    ok(_.isEqual([], {length: 0}), "Commutative equality is implemented for array-like objects");
+    ok(!_.isEqual({length: 0}, []), "Array-like objects and arrays are not equal.");
+    ok(!_.isEqual([], {length: 0}), "Commutative equality is implemented for array-like objects");
 
     ok(!_.isEqual({}, []), "Object literals and array literals are not equal");
     ok(!_.isEqual([], {}), "Commutative equality is implemented for objects and arrays");
@@ -174,7 +174,7 @@ $(document).ready(function() {
     b.join = b.pop = b.reverse = b.shift = b.slice = b.splice = b.concat = b.sort = b.unshift = null;
 
     // Array elements and properties.
-    ok(_.isEqual(a, b), "Arrays containing equivalent elements and different non-numeric properties are equal");
+    ok(!_.isEqual(a, b), "Arrays containing equivalent elements and different non-numeric properties are not equal");
     a.push("White Rocks");
     ok(!_.isEqual(a, b), "Arrays of different lengths are not equal");
     a.push("East Boulder");
@@ -183,7 +183,7 @@ $(document).ready(function() {
 
     // Sparse arrays.
     ok(_.isEqual(Array(3), Array(3)), "Sparse arrays of identical lengths are equal");
-    ok(!_.isEqual(Array(3), Array(6)), "Sparse arrays of different lengths are not equal");
+    ok(_.isEqual(Array(3), Array(6)), "Sparse arrays of different lengths are equal when both are empty");
 
     // According to the Microsoft deviations spec, section 2.1.26, JScript 5.x treats `undefined`
     // elements in arrays as elisions. Thus, sparse arrays and dense arrays containing `undefined`
@@ -235,8 +235,8 @@ $(document).ready(function() {
 
     // Instances.
     ok(_.isEqual(new First, new First), "Object instances are equal");
-    ok(_.isEqual(new First, new Second), "Objects with different constructors and identical own properties are equal");
-    ok(_.isEqual({value: 1}, new First), "Object instances and objects sharing equivalent properties are identical");
+    ok(!_.isEqual(new First, new Second), "Objects with different constructors and identical own properties are not equal");
+    ok(!_.isEqual({value: 1}, new First), "Object instances and objects sharing equivalent properties are not identical");
     ok(!_.isEqual({value: 2}, new Second), "The prototype chain of objects should not be examined");
 
     // Circular Arrays.
diff --git a/underscore.js b/underscore.js
index d19e26960..5e9d4f3e2 100644
--- a/underscore.js
+++ b/underscore.js
@@ -673,6 +673,8 @@
     }
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
+    // Objects with different constructors are not equal.
+    if (a.constructor !== b.constructor) return false;
     // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
     // adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
     var length = stack.length;
@@ -684,34 +686,21 @@
     // Add the first object to the stack of traversed objects.
     stack.push(a);
     var size = 0, result = true;
-    if (a.length === +a.length || b.length === +b.length) {
-      // Compare object lengths to determine if a deep comparison is necessary.
-      size = a.length;
-      result = size == b.length;
-      if (result) {
-        // Deep compare array-like object contents, ignoring non-numeric properties.
-        while (size--) {
-          // Ensure commutative equality for sparse arrays.
-          if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
-        }
+    // Deep compare objects.
+    for (var key in a) {
+      if (hasOwnProperty.call(a, key)) {
+        // Count the expected number of properties.
+        size++;
+        // Deep compare each member.
+        if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
       }
-    } else {
-      // Deep compare objects.
-      for (var key in a) {
-        if (hasOwnProperty.call(a, key)) {
-          // Count the expected number of properties.
-          size++;
-          // Deep compare each member.
-          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
-        }
-      }
-      // Ensure that both objects contain the same number of properties.
-      if (result) {
-        for (key in b) {
-          if (hasOwnProperty.call(b, key) && !size--) break;
-        }
-        result = !size;
+    }
+    // Ensure that both objects contain the same number of properties.
+    if (result) {
+      for (key in b) {
+        if (hasOwnProperty.call(b, key) && !size--) break;
       }
+      result = !size;
     }
     // Remove the first object from the stack of traversed objects.
     stack.pop();

From 86eedd2a7b2d02c282ce130c508b0c4f4e494789 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Oct 2011 16:51:45 -0400
Subject: [PATCH 382/533] Fixes #335, exporting for Titanium.

---
 underscore.js | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/underscore.js b/underscore.js
index 84c966ce3..1cb07d815 100644
--- a/underscore.js
+++ b/underscore.js
@@ -48,13 +48,13 @@
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
-  // Export the Underscore object for **CommonJS**, with backwards-compatibility
-  // for the old `require()` API. If we're not in CommonJS, add `_` to the
-  // global object.
-  if (typeof module !== 'undefined' && module.exports) {
-    module.exports = _;
-    _._ = _;
-  } else if (typeof exports !== 'undefined' && exports) {
+  // Export the Underscore object for **Node.js** and **"CommonJS"**, with
+  // backwards-compatibility for the old `require()` API. If we're not in
+  // CommonJS, add `_` to the global object.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
     exports._ = _;
   } else {
     // Exported as a string, for Closure Compiler "advanced" mode.

From 7fc616943e6ecc43662cb5595f2e839a2ed0172e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 18 Oct 2011 23:26:59 -0400
Subject: [PATCH 383/533] Issue #329, special check for the common and magical
 'length' property.

---
 test/objects.js | 2 +-
 underscore.js   | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 5fc4b6a0a..e02a76ae4 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -183,7 +183,7 @@ $(document).ready(function() {
 
     // Sparse arrays.
     ok(_.isEqual(Array(3), Array(3)), "Sparse arrays of identical lengths are equal");
-    ok(_.isEqual(Array(3), Array(6)), "Sparse arrays of different lengths are equal when both are empty");
+    ok(!_.isEqual(Array(3), Array(6)), "Sparse arrays of different lengths are not equal when both are empty");
 
     // According to the Microsoft deviations spec, section 2.1.26, JScript 5.x treats `undefined`
     // elements in arrays as elisions. Thus, sparse arrays and dense arrays containing `undefined`
diff --git a/underscore.js b/underscore.js
index 1cb07d815..d219bc206 100644
--- a/underscore.js
+++ b/underscore.js
@@ -675,6 +675,8 @@
     }
     // Ensure that both values are objects.
     if (typeA != 'object') return false;
+    // Arrays or Arraylikes with different lengths are not equal.
+    if (a.length !== b.length) return false;
     // Objects with different constructors are not equal.
     if (a.constructor !== b.constructor) return false;
     // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is

From 6241343b33959ced28eb7744f85168ef9106c544 Mon Sep 17 00:00:00 2001
From: jrburke <jrburke@gmail.com>
Date: Wed, 19 Oct 2011 10:07:39 -0700
Subject: [PATCH 384/533] If register as an AMD module, do not create a global,
 since the goal is to not leak out globals in that case.

---
 underscore.js | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/underscore.js b/underscore.js
index c3fe0a53a..2e27c26ac 100644
--- a/underscore.js
+++ b/underscore.js
@@ -56,22 +56,17 @@
       exports = module.exports = _;
     }
     exports._ = _;
-  } else {
-    // Exported as a string, for Closure Compiler "advanced" mode.
-    root['_'] = _;
-
+  } else if (typeof define === 'function' && define.amd) {
     // Register as a module with AMD. Use a named module since underscore
     // can be used in optimization schemes that do not understand anonymous
     // modules, and the if it is used on a page with an AMD loader, a load
-    // error could occur. This work is done in addition to exporting a global
-    // on root since the web page could use an AMD loader to load the module
-    // but still want to use the global reference. Test pages are a good
-    // example.
-    if (typeof define === 'function' && define.amd) {
-      define('underscore', function() {
-        return _;
-      });
-    }
+    // error could occur.
+    define('underscore', function() {
+      return _;
+    });
+  } else {
+    // Exported as a string, for Closure Compiler "advanced" mode.
+    root['_'] = _;
   }
 
   // Current version.

From 3587febd8e45aa53a8eeeae61f5e04899031dfb3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 19 Oct 2011 14:47:20 -0400
Subject: [PATCH 385/533] Comment formatting.

---
 underscore.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index d219bc206..f2c8c94b7 100644
--- a/underscore.js
+++ b/underscore.js
@@ -679,12 +679,12 @@
     if (a.length !== b.length) return false;
     // Objects with different constructors are not equal.
     if (a.constructor !== b.constructor) return false;
-    // Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
-    // adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
     var length = stack.length;
     while (length--) {
-      // Linear search. Performance is inversely proportional to the number of unique nested
-      // structures.
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
       if (stack[length] == a) return true;
     }
     // Add the first object to the stack of traversed objects.

From 4b2de2e107465a1916d762fbfebede68a9c55fc9 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 19 Oct 2011 15:59:53 -0400
Subject: [PATCH 386/533] Fixes #341, flattening arrays in the context of
 taking a union shouldn't be deep. Adding a shallow parameter to _.flatten()

---
 test/arrays.js | 14 ++++++++++----
 underscore.js  |  6 +++---
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 80da71f6f..c648f081b 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -50,10 +50,13 @@ $(document).ready(function() {
   });
 
   test("arrays: flatten", function() {
-    var list = [1, [2], [3, [[[4]]]]];
-    equals(_.flatten(list).join(', '), '1, 2, 3, 4', 'can flatten nested arrays');
-    var result = (function(){ return _.flatten(arguments); })(1, [2], [3, [[[4]]]]);
-    equals(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
+    if (window.JSON) {
+      var list = [1, [2], [3, [[[4]]]]];
+      equals(JSON.stringify(_.flatten(list)), '[1,2,3,4]', 'can flatten nested arrays');
+      equals(JSON.stringify(_.flatten(list, true)), '[1,2,3,[[[4]]]]', 'can shallowly flatten nested arrays');
+      var result = (function(){ return _.flatten(arguments); })(1, [2], [3, [[[4]]]]);
+      equals(JSON.stringify(result), '[1,2,3,4]', 'works on an arguments object');
+    }
   });
 
   test("arrays: without", function() {
@@ -97,6 +100,9 @@ $(document).ready(function() {
   test("arrays: union", function() {
     var result = _.union([1, 2, 3], [2, 30, 1], [1, 40]);
     equals(result.join(' '), '1 2 3 30 40', 'takes the union of a list of arrays');
+
+    var result = _.union([1, 2, 3], [2, 30, 1], [1, 40, [1]]);
+    equals(result.join(' '), '1 2 3 30 40 1', 'takes the union of a list of nested arrays');
   });
 
   test("arrays: difference", function() {
diff --git a/underscore.js b/underscore.js
index f2c8c94b7..f2f42898f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -345,9 +345,9 @@
   };
 
   // Return a completely flattened version of an array.
-  _.flatten = function(array) {
+  _.flatten = function(array, shallow) {
     return _.reduce(array, function(memo, value) {
-      if (_.isArray(value)) return memo.concat(_.flatten(value));
+      if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
       memo[memo.length] = value;
       return memo;
     }, []);
@@ -377,7 +377,7 @@
   // Produce an array that contains the union: each distinct element from all of
   // the passed-in arrays.
   _.union = function() {
-    return _.uniq(_.flatten(arguments));
+    return _.uniq(_.flatten(arguments, true));
   };
 
   // Produce an array that contains every item shared between all the

From f1ba2057317cac2a7d396ac2ac330d40f8481175 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 19 Oct 2011 16:01:13 -0400
Subject: [PATCH 387/533] cleaning up AMD comment.

---
 underscore.js | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/underscore.js b/underscore.js
index 04f48d0c1..55b72818d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -57,10 +57,7 @@
     }
     exports._ = _;
   } else if (typeof define === 'function' && define.amd) {
-    // Register as a module with AMD. Use a named module since underscore
-    // can be used in optimization schemes that do not understand anonymous
-    // modules, and the if it is used on a page with an AMD loader, a load
-    // error could occur.
+    // Register as a named module with AMD.
     define('underscore', function() {
       return _;
     });

From 3fbb9bb0dd0ae5340642ed5ba4ab46465a63e1c6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 19 Oct 2011 16:15:40 -0400
Subject: [PATCH 388/533] Fixes #339 -- incorrect memoization example in docs.

---
 index.html | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index 3353f7d0f..eae7510e1 100644
--- a/index.html
+++ b/index.html
@@ -751,10 +751,9 @@ jQuery('#underscore_button').bind('click', buttonView.onClick);
         as the key.
       </p>
       <pre>
-var fibonacci = function(n) {
+var fibonacci = _.memoize(function(n) {
   return n &lt; 2 ? n : fibonacci(n - 1) + fibonacci(n - 2);
-};
-var fastFibonacci = _.memoize(fibonacci);
+});
 </pre>
 
       <p id="delay">

From 00cd88cfa64cb81fac1a383842c172b7c180d783 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 19 Oct 2011 16:51:53 -0400
Subject: [PATCH 389/533] Enhancing _.bind() to support binding constructors
 ... which you would never, ever want to do.

---
 test/functions.js |  7 +++++++
 underscore.js     | 18 ++++++++++++++----
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index af35e5eff..05155eca9 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -29,6 +29,13 @@ $(document).ready(function() {
     _.bind(func, 0, 0, 'can bind a function to `0`')();
     _.bind(func, '', '', 'can bind a function to an empty string')();
     _.bind(func, false, false, 'can bind a function to `false`')();
+
+    // These tests are only meaningful when using a browser without a native bind function
+    // To test this with a modern browser, set underscore's nativeBind to undefined
+    var F = function () { return this; };
+    var Boundf = _.bind(F, {hello: "moe curly"});
+    equal(new Boundf().hello, undefined, "function should not be bound to the context, to comply with ECMAScript 5");
+    equal(Boundf().hello, "moe curly", "When called without the new operator, it's OK to be bound to the context");
   });
 
   test("functions: bindAll", function() {
diff --git a/underscore.js b/underscore.js
index 55b72818d..a50ac4b81 100644
--- a/underscore.js
+++ b/underscore.js
@@ -464,15 +464,25 @@
   // Function (ahem) Functions
   // ------------------
 
+  // Reusable constructor function for prototype setting.
+  var ctor = function(){};
+
   // Create a function bound to a given object (assigning `this`, and arguments,
   // optionally). Binding with arguments is also known as `curry`.
   // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
   // We check for `func.bind` first, to fail fast when `func` is undefined.
-  _.bind = function(func, obj) {
+  _.bind = function bind(func, context) {
+    var bound, args;
     if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
-    var args = slice.call(arguments, 2);
-    return function() {
-      return func.apply(obj, args.concat(slice.call(arguments)));
+    if (!_.isFunction(func)) throw new TypeError;
+    args = slice.call(arguments, 2);
+    return bound = function() {
+      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+      ctor.prototype = func.prototype;
+      var self = new ctor;
+      var result = func.apply(self, args.concat(slice.call(arguments)));
+      if (Object(result) === result) return result;
+      return self;
     };
   };
 

From 42e04ecc7a4c7cef44ce42076141c38dacdce6ab Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Wed, 19 Oct 2011 23:53:00 -0400
Subject: [PATCH 390/533] execution time optimisations for `_.isArguments`,
 stricter es3 fallback

---
 underscore.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/underscore.js b/underscore.js
index 182070eb3..27b458428 100644
--- a/underscore.js
+++ b/underscore.js
@@ -739,9 +739,16 @@
   };
 
   // Is a given variable an arguments object?
-  _.isArguments = function(obj) {
-    return toString.call(obj) == '[object Arguments]' || !!(obj && hasOwnProperty.call(obj, 'callee'));
-  };
+  _.isArguments = toString.call(arguments) == '[object Arguments]'
+    ? function(obj) {
+      return toString.call(obj) == '[object Arguments]';
+    }
+    : function(obj) {
+      return obj
+        ? hasOwnProperty.call(obj, 'callee')
+          && hasOwnProperty.call(obj, 'length')
+        : false;
+    };
 
   // Is a given value a function?
   _.isFunction = function(obj) {

From 4d6e2c6ed4b3b5c91d4cc4170f67e71dc948ae13 Mon Sep 17 00:00:00 2001
From: Michael Ficarra <github@michael.ficarra.me>
Date: Thu, 20 Oct 2011 18:08:08 -0300
Subject: [PATCH 391/533] isNaN comment

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index a50ac4b81..381583ab4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -774,9 +774,9 @@
     return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
   };
 
-  // Is the given value `NaN`? `NaN` happens to be the only value in JavaScript
-  // that does not equal itself.
+  // Is the given value `NaN`?
   _.isNaN = function(obj) {
+    // `NaN` is the only value for which `===` is not reflexive.
     return obj !== obj;
   };
 

From 96fdf6fbac96b47c127c5908c96d3c1e640a31ad Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 21 Oct 2011 14:44:38 -0400
Subject: [PATCH 392/533] Adding the ability to _.groupBy(list, 'account_id')

---
 test/collections.js | 6 ++++++
 underscore.js       | 6 ++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index cf1c815d6..009d2f327 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -202,6 +202,12 @@ $(document).ready(function() {
     var parity = _.groupBy([1, 2, 3, 4, 5, 6], function(num){ return num % 2; });
     ok('0' in parity && '1' in parity, 'created a group for each value');
     equals(parity[0].join(', '), '2, 4, 6', 'put each even number in the right group');
+
+    var list = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"];
+    var grouped = _.groupBy(list, 'length');
+    equals(grouped['3'].join(' '), 'one two six ten');
+    equals(grouped['4'].join(' '), 'four five nine');
+    equals(grouped['5'].join(' '), 'three seven eight');
   });
 
   test('collections: sortedIndex', function() {
diff --git a/underscore.js b/underscore.js
index a50ac4b81..16b076276 100644
--- a/underscore.js
+++ b/underscore.js
@@ -276,9 +276,11 @@
     }), 'value');
   };
 
-  // Groups the object's values by a criterion produced by an iterator
-  _.groupBy = function(obj, iterator) {
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = function(obj, val) {
     var result = {};
+    var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
     each(obj, function(value, index) {
       var key = iterator(value, index);
       (result[key] || (result[key] = [])).push(value);

From 38b1fe0dd385df94016b4275743d8be7a69891b1 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 10:12:43 -0400
Subject: [PATCH 393/533] Fixes #345.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 86493a085..82dab85e2 100644
--- a/underscore.js
+++ b/underscore.js
@@ -205,8 +205,8 @@
     var found = false;
     if (obj == null) return found;
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
-    any(obj, function(value) {
-      if (found = value === target) return true;
+    found = any(obj, function(value) {
+      if (value === target) return true;
     });
     return found;
   };

From 43878e8ef0d4370054cd9aab297b3f0a55ac0722 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 11:28:26 -0400
Subject: [PATCH 394/533] Merging in #321

---
 underscore.js | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/underscore.js b/underscore.js
index 5d2aece34..72237d180 100644
--- a/underscore.js
+++ b/underscore.js
@@ -758,16 +758,15 @@
   };
 
   // Is a given variable an arguments object?
-  _.isArguments = toString.call(arguments) == '[object Arguments]'
-    ? function(obj) {
+  if (toString.call(arguments) == '[object Arguments]') {
+    _.isArguments = function(obj) {
       return toString.call(obj) == '[object Arguments]';
-    }
-    : function(obj) {
-      return obj
-        ? hasOwnProperty.call(obj, 'callee')
-          && hasOwnProperty.call(obj, 'length')
-        : false;
     };
+  } else {
+    _.isArguments = function(obj) {
+      return !!(obj && hasOwnProperty.call(obj, 'callee'));
+    };
+  }
 
   // Is a given value a function?
   _.isFunction = function(obj) {

From 456a69c559f65330d6a3c981b5b99c8a1ca538f2 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 11:51:47 -0400
Subject: [PATCH 395/533] fixing documentation for throttle.

---
 index.html | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/index.html b/index.html
index eae7510e1..1b4f4313f 100644
--- a/index.html
+++ b/index.html
@@ -798,11 +798,12 @@ $(window).scroll(throttled);
       <p id="debounce">
         <b class="header">debounce</b><code>_.debounce(function, wait)</code>
         <br />
-        Repeated calls to a debounced function will postpone it's execution
-        until after <b>wait</b> milliseconds have elapsed. Useful for implementing
-        behavior that should only happen <i>after</i> the input has stopped arriving.
-        For example: rendering a preview of a Markdown comment, recalculating a
-        layout after the window has stopped being resized...
+        Calling a debounced function will postpone its execution until after 
+        <b>wait</b> milliseconds have elapsed since the last time the function 
+        was invoked. Useful for implementing behavior that should only happen 
+        <i>after</i> the input has stopped arriving. For example: rendering a 
+        preview of a Markdown comment, recalculating a layout after the window 
+        has stopped being resized...
       </p>
       <pre>
 var lazyLayout = _.debounce(calculateLayout, 300);

From bceb77e325839277b2a03b34d1247e7d555cd0ac Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 12:05:59 -0400
Subject: [PATCH 396/533] Fixes #170, #266 ... throttle now starts at the
 beginning of the call.

---
 test/functions.js |  3 ++-
 underscore.js     | 36 +++++++++++++++++++-----------------
 2 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 05155eca9..fa74f26ea 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -90,7 +90,7 @@ $(document).ready(function() {
     _.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
   });
 
-  asyncTest("functions: throttle", 1, function() {
+  asyncTest("functions: throttle", 2, function() {
     var counter = 0;
     var incr = function(){ counter++; };
     var throttledIncr = _.throttle(incr, 100);
@@ -99,6 +99,7 @@ $(document).ready(function() {
     setTimeout(throttledIncr, 140);
     setTimeout(throttledIncr, 220);
     setTimeout(throttledIncr, 240);
+    _.delay(function(){ ok(counter == 1, "incr throttle was called immediately"); }, 40);
     _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 400);
   });
 
diff --git a/underscore.js b/underscore.js
index 72237d180..d5279f4b6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -520,8 +520,23 @@
     return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
   };
 
-  // Internal function used to implement `_.throttle` and `_.debounce`.
-  var limit = function(func, wait, debounce) {
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var ran = false;
+    return function() {
+      if (!ran) {
+        ran = true;
+        setTimeout(function(){ ran = false; }, wait);
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds.
+  _.debounce = function(func, wait) {
     var timeout;
     return function() {
       var context = this, args = arguments;
@@ -529,24 +544,11 @@
         timeout = null;
         func.apply(context, args);
       };
-      if (debounce) clearTimeout(timeout);
-      if (debounce || !timeout) timeout = setTimeout(throttler, wait);
+      if (timeout) clearTimeout(timeout);
+      timeout = setTimeout(throttler, wait);
     };
   };
 
-  // Returns a function, that, when invoked, will only be triggered at most once
-  // during a given window of time.
-  _.throttle = function(func, wait) {
-    return limit(func, wait, false);
-  };
-
-  // Returns a function, that, as long as it continues to be invoked, will not
-  // be triggered. The function will be called after it stops being called for
-  // N milliseconds.
-  _.debounce = function(func, wait) {
-    return limit(func, wait, true);
-  };
-
   // Returns a function that will be executed at most one time, no matter how
   // often you call it. Useful for lazy initialization.
   _.once = function(func) {

From cfec39fd4e1dd790a92c348ff98dee1252c851b4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 12:06:55 -0400
Subject: [PATCH 397/533] Revert "Fixes #170, #266 ... throttle now starts at
 the beginning of the call."

This reverts commit bceb77e325839277b2a03b34d1247e7d555cd0ac.
---
 test/functions.js |  3 +--
 underscore.js     | 36 +++++++++++++++++-------------------
 2 files changed, 18 insertions(+), 21 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index fa74f26ea..05155eca9 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -90,7 +90,7 @@ $(document).ready(function() {
     _.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
   });
 
-  asyncTest("functions: throttle", 2, function() {
+  asyncTest("functions: throttle", 1, function() {
     var counter = 0;
     var incr = function(){ counter++; };
     var throttledIncr = _.throttle(incr, 100);
@@ -99,7 +99,6 @@ $(document).ready(function() {
     setTimeout(throttledIncr, 140);
     setTimeout(throttledIncr, 220);
     setTimeout(throttledIncr, 240);
-    _.delay(function(){ ok(counter == 1, "incr throttle was called immediately"); }, 40);
     _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 400);
   });
 
diff --git a/underscore.js b/underscore.js
index d5279f4b6..72237d180 100644
--- a/underscore.js
+++ b/underscore.js
@@ -520,23 +520,8 @@
     return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
   };
 
-  // Returns a function, that, when invoked, will only be triggered at most once
-  // during a given window of time.
-  _.throttle = function(func, wait) {
-    var ran = false;
-    return function() {
-      if (!ran) {
-        ran = true;
-        setTimeout(function(){ ran = false; }, wait);
-        return func.apply(this, arguments);
-      }
-    };
-  };
-
-  // Returns a function, that, as long as it continues to be invoked, will not
-  // be triggered. The function will be called after it stops being called for
-  // N milliseconds.
-  _.debounce = function(func, wait) {
+  // Internal function used to implement `_.throttle` and `_.debounce`.
+  var limit = function(func, wait, debounce) {
     var timeout;
     return function() {
       var context = this, args = arguments;
@@ -544,11 +529,24 @@
         timeout = null;
         func.apply(context, args);
       };
-      if (timeout) clearTimeout(timeout);
-      timeout = setTimeout(throttler, wait);
+      if (debounce) clearTimeout(timeout);
+      if (debounce || !timeout) timeout = setTimeout(throttler, wait);
     };
   };
 
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    return limit(func, wait, false);
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds.
+  _.debounce = function(func, wait) {
+    return limit(func, wait, true);
+  };
+
   // Returns a function that will be executed at most one time, no matter how
   // often you call it. Useful for lazy initialization.
   _.once = function(func) {

From b4d950334052ee5e03f697122f7554ebfba9aeb3 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 13:13:24 -0400
Subject: [PATCH 398/533] fixes #170, fixes #266 ... reimplementing throttle in
 terms of debounce.

---
 test/functions.js | 20 ++++++++++++++++++--
 underscore.js     | 42 +++++++++++++++++++++++++-----------------
 2 files changed, 43 insertions(+), 19 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 05155eca9..5bcf215b7 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -90,16 +90,32 @@ $(document).ready(function() {
     _.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
   });
 
-  asyncTest("functions: throttle", 1, function() {
+  asyncTest("functions: throttle", 2, function() {
     var counter = 0;
     var incr = function(){ counter++; };
     var throttledIncr = _.throttle(incr, 100);
     throttledIncr(); throttledIncr(); throttledIncr();
+    setTimeout(throttledIncr, 70);
     setTimeout(throttledIncr, 120);
     setTimeout(throttledIncr, 140);
+    setTimeout(throttledIncr, 190);
     setTimeout(throttledIncr, 220);
     setTimeout(throttledIncr, 240);
-    _.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 400);
+    _.delay(function(){ ok(counter == 1, "incr was called immediately"); }, 30);
+    _.delay(function(){ ok(counter == 4, "incr was throttled"); start(); }, 400);
+  });
+
+  asyncTest("functions: throttle arguments", 2, function() {
+    var value = 0;
+    var update = function(val){ value = val; };
+    var throttledUpdate = _.throttle(update, 100);
+    throttledUpdate(1); throttledUpdate(2); throttledUpdate(3);
+    setTimeout(function(){ throttledUpdate(4); }, 120);
+    setTimeout(function(){ throttledUpdate(5); }, 140);
+    setTimeout(function(){ throttledUpdate(6); }, 260);
+    setTimeout(function(){ throttledUpdate(7); }, 270);
+    _.delay(function(){ ok(value == 1, "updated to latest value"); }, 40);
+    _.delay(function(){ ok(value == 7, "updated to latest value"); start(); }, 400);
   });
 
   asyncTest("functions: debounce", 1, function() {
diff --git a/underscore.js b/underscore.js
index 72237d180..04f3311cd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -520,8 +520,29 @@
     return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
   };
 
-  // Internal function used to implement `_.throttle` and `_.debounce`.
-  var limit = function(func, wait, debounce) {
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var timeout, context, args, throttling, finishThrottle;
+    finishThrottle = _.debounce(function(){ throttling = false; }, wait);
+    return function() {
+      context = this; args = arguments;
+      var throttler = function() {
+        timeout = null;
+        func.apply(context, args);
+        finishThrottle();
+      };
+      if (!timeout) timeout = setTimeout(throttler, wait);
+      if (!throttling) func.apply(context, args);
+      if (finishThrottle) finishThrottle();
+      throttling = true;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds.
+  _.debounce = function(func, wait) {
     var timeout;
     return function() {
       var context = this, args = arguments;
@@ -529,24 +550,11 @@
         timeout = null;
         func.apply(context, args);
       };
-      if (debounce) clearTimeout(timeout);
-      if (debounce || !timeout) timeout = setTimeout(throttler, wait);
+      clearTimeout(timeout);
+      timeout = setTimeout(throttler, wait);
     };
   };
 
-  // Returns a function, that, when invoked, will only be triggered at most once
-  // during a given window of time.
-  _.throttle = function(func, wait) {
-    return limit(func, wait, false);
-  };
-
-  // Returns a function, that, as long as it continues to be invoked, will not
-  // be triggered. The function will be called after it stops being called for
-  // N milliseconds.
-  _.debounce = function(func, wait) {
-    return limit(func, wait, true);
-  };
-
   // Returns a function that will be executed at most one time, no matter how
   // often you call it. Useful for lazy initialization.
   _.once = function(func) {

From 3c54f7911339261f0e54dc3451d8ae981ca42df9 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 13:19:15 -0400
Subject: [PATCH 399/533] fixes #347

---
 test/objects.js | 4 ++++
 underscore.js   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index 967ba6b21..7e6cd7cc1 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -66,6 +66,10 @@ $(document).ready(function() {
 
     clone.lucky.push(101);
     equals(_.last(moe.lucky), 101, 'changes to deep attributes are shared with the original');
+
+    equals(_.clone(undefined), void 0, 'non objects should not be changed by clone');
+    equals(_.clone(1), 1, 'non objects should not be changed by clone');
+    equals(_.clone(null), null, 'non objects should not be changed by clone');
   });
 
   test("objects: isEqual", function() {
diff --git a/underscore.js b/underscore.js
index 04f3311cd..5470fa6b3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -645,6 +645,7 @@
 
   // Create a (shallow-cloned) duplicate of an object.
   _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
     return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
   };
 

From bffdb50f9bb1f44252c5d5e53c48afef5065ad4a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 14:23:36 -0400
Subject: [PATCH 400/533] Underscore.js 1.2.1

---
 docs/underscore.html | 297 +++++++++++++++++++++++--------------------
 index.html           |  72 +++++++----
 package.json         |   2 +-
 underscore-min.js    |  47 +++----
 underscore.js        |   4 +-
 5 files changed, 236 insertions(+), 186 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index 726b8976a..6e44f0cf8 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.0
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.1
 (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -21,13 +21,18 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
     <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">,</span>
-    <span class="nx">nativeBind</span>         <span class="o">=</span> <span class="nx">FuncProto</span><span class="p">.</span><span class="nx">bind</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>CommonJS</strong>, with backwards-compatibility
-for the old <code>require()</code> API. If we're not in CommonJS, add <code>_</code> to the
-global object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">module</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-    <span class="nx">_</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+    <span class="nx">nativeBind</span>         <span class="o">=</span> <span class="nx">FuncProto</span><span class="p">.</span><span class="nx">bind</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>Node.js</strong> and <strong>"CommonJS"</strong>, with
+backwards-compatibility for the old <code>require()</code> API. If we're not in
+CommonJS, add <code>_</code> to the global object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">module</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="p">)</span> <span class="p">{</span>
+      <span class="nx">exports</span> <span class="o">=</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+    <span class="p">}</span>
+    <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+  <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">define</span> <span class="o">===</span> <span class="s1">&#39;function&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">define</span><span class="p">.</span><span class="nx">amd</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Register as a named module with AMD.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">define</span><span class="p">(</span><span class="s1">&#39;underscore&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">_</span><span class="p">;</span>
+    <span class="p">});</span>
+  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -44,7 +49,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if avai
         <span class="p">}</span>
       <span class="p">}</span>
     <span class="p">}</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
@@ -53,7 +58,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
@@ -71,7 +76,7 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
     <span class="p">});</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s2">&quot;Reduce of empty array with no initial value&quot;</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
@@ -80,7 +85,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
     <span class="p">}</span>
     <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
@@ -89,7 +94,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
 Aliased as <code>select</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
@@ -99,14 +104,14 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
@@ -116,7 +121,7 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
@@ -127,23 +132,23 @@ Aliased as <code>any</code>.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">|=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="o">!!</span><span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
 Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-    <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">found</span> <span class="o">=</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="nx">found</span> <span class="o">=</span> <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">call</span> <span class="o">?</span> <span class="nx">method</span> <span class="o">||</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
@@ -152,7 +157,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="kc">Infinity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
@@ -161,7 +166,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Shuffle an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">shuffle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Shuffle an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">shuffle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">shuffled</span> <span class="o">=</span> <span class="p">[],</span> <span class="nx">rand</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
@@ -173,7 +178,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">shuffled</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -183,14 +188,16 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Groups the object's values by a criterion produced by an iterator</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">groupBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Groups the object's values by a criterion. Pass either a string attribute
+to group by, or a function that returns the criterion.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">groupBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">val</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{};</span>
+    <span class="kd">var</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">val</span><span class="p">)</span> <span class="o">?</span> <span class="nx">val</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">val</span><span class="p">];</span> <span class="p">};</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">)</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">);</span>
       <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">||</span> <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">[])).</span><span class="nx">push</span><span class="p">(</span><span class="nx">value</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -199,42 +206,42 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
 with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Returns everything but the last entry of the array. Especcialy useful on
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Returns everything but the last entry of the array. Especcialy useful on
 the arguments object. Passing <strong>n</strong> will return all the values in
 the array, excluding the last N. The <strong>guard</strong> check allows it to work with
 <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">initial</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="p">((</span><span class="nx">n</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">n</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Get the last element of an array. Passing <strong>n</strong> will return the last N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Get the last element of an array. Passing <strong>n</strong> will return the last N
 values in the array. The <strong>guard</strong> check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
 check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">shallow</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">shallow</span> <span class="o">?</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.
 Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">;</span>
@@ -247,10 +254,10 @@ Aliased as <code>unique</code>.</p>             </td>             <td class="cod
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
 the passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">union</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="kc">true</span><span class="p">));</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
 passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersection</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
@@ -258,17 +265,17 @@ passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Take the difference between one array and another.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Take the difference between one array and another.
 Only the elements present in just the first array will remain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.
@@ -283,13 +290,13 @@ for <strong>isSorted</strong> to use binary search.</p>             </td>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
@@ -308,36 +315,61 @@ the native Python <code>range()</code> function. See
     <span class="p">}</span>
 
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Reusable constructor function for prototype setting.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ctor</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(){};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.
-We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span> <span class="nx">bind</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">bound</span><span class="p">,</span> <span class="nx">args</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">bind</span> <span class="o">===</span> <span class="nx">nativeBind</span> <span class="o">&amp;&amp;</span> <span class="nx">nativeBind</span><span class="p">)</span> <span class="k">return</span> <span class="nx">nativeBind</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
-    <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
-    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">func</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">;</span>
+    <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">bound</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="k">this</span> <span class="k">instanceof</span> <span class="nx">bound</span><span class="p">))</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+      <span class="nx">ctor</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span>
+      <span class="kd">var</span> <span class="nx">self</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">ctor</span><span class="p">;</span>
+      <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">self</span><span class="p">,</span> <span class="nx">args</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)));</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nb">Object</span><span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="o">===</span> <span class="nx">result</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
+      <span class="k">return</span> <span class="nx">self</span><span class="p">;</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Internal function used to implement <code>_.throttle</code> and <code>_.debounce</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">limit</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="nx">debounce</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
+during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">timeout</span><span class="p">,</span> <span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">,</span> <span class="nx">throttling</span><span class="p">,</span> <span class="nx">finishThrottle</span><span class="p">;</span>
+    <span class="nx">finishThrottle</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
+      <span class="kd">var</span> <span class="nx">throttler</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+        <span class="nx">timeout</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
+        <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+        <span class="nx">finishThrottle</span><span class="p">();</span>
+      <span class="p">};</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">throttling</span><span class="p">)</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">finishThrottle</span><span class="p">)</span> <span class="nx">finishThrottle</span><span class="p">();</span>
+      <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
+be triggered. The function will be called after it stops being called for
+N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">timeout</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">,</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
@@ -345,17 +377,10 @@ cleared.</p>             </td>             <td class="code">               <div
         <span class="nx">timeout</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
         <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
       <span class="p">};</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span><span class="p">)</span> <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">debounce</span> <span class="o">||</span> <span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
+      <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
+      <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
-during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">false</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
-be triggered. The function will be called after it stops being called for
-N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">limit</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">,</span> <span class="kc">true</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
 often you call it. Useful for lazy initialization.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">once</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">ran</span> <span class="o">=</span> <span class="kc">false</span><span class="p">,</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -363,14 +388,14 @@ often you call it. Useful for lazy initialization.</p>             </td>
       <span class="nx">ran</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -380,84 +405,80 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">names</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="nx">names</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">key</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">names</span><span class="p">.</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
-See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Compare object types.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">typeA</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">a</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="k">typeof</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Optimization; ensure that both values are truthy or falsy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">a</span> <span class="o">!=</span> <span class="o">!</span><span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p><code>NaN</code> values are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare string objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isStringA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isStringB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isStringA</span> <span class="o">||</span> <span class="nx">isStringB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isStringA</span> <span class="o">&amp;&amp;</span> <span class="nx">isStringB</span> <span class="o">&amp;&amp;</span> <span class="nb">String</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Compare number objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isNumberA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isNumberB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isNumberA</span> <span class="o">||</span> <span class="nx">isNumberB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isNumberA</span> <span class="o">&amp;&amp;</span> <span class="nx">isNumberB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Compare boolean objects by value. The value of <code>true</code> is 1; the value of <code>false</code> is 0.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isBooleanA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isBooleanB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isBooleanA</span> <span class="o">||</span> <span class="nx">isBooleanB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isBooleanA</span> <span class="o">&amp;&amp;</span> <span class="nx">isBooleanB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Compare dates by their millisecond values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isDateA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isDateB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isDateA</span> <span class="o">||</span> <span class="nx">isDateB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isDateA</span> <span class="o">&amp;&amp;</span> <span class="nx">isDateB</span> <span class="o">&amp;&amp;</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Compare RegExps by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isRegExpA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isRegExpB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isRegExpA</span> <span class="o">||</span> <span class="nx">isRegExpB</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Ensure commutative equality for RegExps.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">return</span> <span class="nx">isRegExpA</span> <span class="o">&amp;&amp;</span> <span class="nx">isRegExpB</span> <span class="o">&amp;&amp;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
+See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">b</span> <span class="o">==</span> <span class="kc">null</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare object types.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">typeA</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">a</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="k">typeof</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Optimization; ensure that both values are truthy or falsy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">a</span> <span class="o">!=</span> <span class="o">!</span><span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p><code>NaN</code> values are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Compare string objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isStringA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isStringB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isStringA</span> <span class="o">||</span> <span class="nx">isStringB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isStringA</span> <span class="o">&amp;&amp;</span> <span class="nx">isStringB</span> <span class="o">&amp;&amp;</span> <span class="nb">String</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Compare number objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isNumberA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isNumberB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isNumberA</span> <span class="o">||</span> <span class="nx">isNumberB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isNumberA</span> <span class="o">&amp;&amp;</span> <span class="nx">isNumberB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Compare boolean objects by value. The value of <code>true</code> is 1; the value of <code>false</code> is 0.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isBooleanA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isBooleanB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isBooleanA</span> <span class="o">||</span> <span class="nx">isBooleanB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isBooleanA</span> <span class="o">&amp;&amp;</span> <span class="nx">isBooleanB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Compare dates by their millisecond values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isDateA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isDateB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isDateA</span> <span class="o">||</span> <span class="nx">isDateB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isDateA</span> <span class="o">&amp;&amp;</span> <span class="nx">isDateB</span> <span class="o">&amp;&amp;</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Compare RegExps by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isRegExpA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isRegExpB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">isRegExpA</span> <span class="o">||</span> <span class="nx">isRegExpB</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Ensure commutative equality for RegExps.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">return</span> <span class="nx">isRegExpA</span> <span class="o">&amp;&amp;</span> <span class="nx">isRegExpB</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">source</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">global</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">&amp;&amp;</span>
              <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span><span class="p">;</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Ensure that both values are objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic structures is
-adapted from ES 5.1 section 15.12.3, abstract operation <code>JO</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">stack</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of unique nested
-structures.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">stack</span><span class="p">[</span><span class="nx">length</span><span class="p">]</span> <span class="o">==</span> <span class="nx">a</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
-    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">||</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Compare object lengths to determine if a deep comparison is necessary.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="nx">size</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-      <span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Deep compare array-like object contents, ignoring non-numeric properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">while</span> <span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Ensure commutative equality for sparse arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
-        <span class="p">}</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Ensure that both values are objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Arrays or Arraylikes with different lengths are not equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Objects with different constructors are not equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic
+structures is adapted from ES 5.1 section 15.12.3, abstract operation <code>JO</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">stack</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of
+unique nested structures.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">stack</span><span class="p">[</span><span class="nx">length</span><span class="p">]</span> <span class="o">==</span> <span class="nx">a</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
       <span class="p">}</span>
-    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
-        <span class="p">}</span>
-      <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
-          <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="k">break</span><span class="p">;</span>
-        <span class="p">}</span>
-        <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="k">break</span><span class="p">;</span>
       <span class="p">}</span>
+      <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
     <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Remove the first object from the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
   <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given array or object empty?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given array, string, or object empty?
+An "empty" object has no enumerable own-properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
@@ -465,56 +486,60 @@ structures.</p>             </td>             <td class="code">               <d
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">call</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">apply</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">;</span>
+    <span class="p">};</span>
+  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+    <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
+    <span class="p">};</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Function]&#39;</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="s1">&#39;&#39;</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">charCodeAt</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">substr</span><span class="p">));</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object String]&#39;</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">===</span> <span class="mi">0</span> <span class="o">||</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toExponential</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">toFixed</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>? <code>NaN</code> happens to be the only value in JavaScript
-that does not equal itself.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p><code>NaN</code> is the only value for which <code>===</code> is not reflexive.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span> <span class="o">||</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">getTimezoneOffset</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">setUTCFullYear</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">test</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">exec</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">||</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">===</span> <span class="kc">false</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Date]&#39;</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object RegExp]&#39;</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="o">+</span><span class="nx">string</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&amp;(?!\w+;|#\d+;|#x[\da-f]+;)/gi</span><span class="p">,</span> <span class="s1">&#39;&amp;amp;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&lt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;lt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&gt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;gt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;quot;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;#x27;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\//g</span><span class="p">,</span><span class="s1">&#39;&amp;#x2F;&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">escape</span>      <span class="o">:</span> <span class="sr">/&lt;%-([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -538,31 +563,31 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-131">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-131">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 1b4f4313f..8c8e7c914 100644
--- a/index.html
+++ b/index.html
@@ -126,11 +126,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.2.0)</a></td>
-        <td><i>32kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.2.1)</a></td>
+        <td><i>33kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.2.0)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.2.1)</a></td>
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -454,11 +454,16 @@ _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });
         <b class="header">groupBy</b><code>_.groupBy(list, iterator)</code>
         <br />
         Splits a collection into sets, grouped by the result of running each
-        value through <b>iterator</b>.
+        value through <b>iterator</b>. If <b>iterator</b> is a string instead of
+        a function, groups by the property named by <b>iterator</b> on each of
+        the values.
       </p>
       <pre>
 _.groupBy([1.3, 2.1, 2.4], function(num){ return Math.floor(num); });
 =&gt; {1: [1.3], 2: [2.1, 2.4]}
+
+_.groupBy(['one', 'two', 'three'], 'length');
+=&gt; {3: ["one", "two"], 5: ["three"]}
 </pre>
 
       <p id="sortedIndex">
@@ -1265,26 +1270,6 @@ _([1, 2, 3]).value();
 =&gt; [1, 2, 3]
 </pre>
 
-      <h2 id="duck_typing">Duck Typing</h2>
-
-      <p>
-        The <b>isType</b> (<tt>isArray</tt>, <tt>isFunction</tt>, <tt>isString</tt> ...) family of type-checking
-        functions use property detection to do their work, which, although
-        orders of magnitude faster than the alternative, isn't entirely safe when dealing
-        with objects that are used as hashes, where arbitrary strings are being
-        set for the keys. It's entirely possible for an object to masquerade as
-        another type, if you're setting properties with names like "concat" and
-        "charCodeAt". So be aware.
-      </p>
-      
-      <p>
-        In a similar fashion, <tt>_.each</tt> and all of the other functions 
-        based on it are designed to be able to iterate over any Array-like
-        JavaScript object, including <tt>arguments</tt>, NodeLists, and more.
-        Passing hash-like objects with a numeric <tt>length</tt> key won't work.
-      </p>
-
-
       <h2>Links &amp; Suggested Reading</h2>
 
       <p>
@@ -1343,6 +1328,45 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.2.1</b> &mdash; <small><i>Oct. 24, 2011</i></small><br />
+        <ul>
+          <li>
+            Several important bug fixes for <tt>_.isEqual</tt>, which should now 
+            do better on mutated Arrays, and on non-Array objects with 
+            <tt>length</tt> properties. <small>(#329)</small>
+          </li>
+          <li>
+            <b>jrburke</b> contributed Underscore exporting for AMD module loaders,
+            and <b>tonylukasavage</b> for Appcelerator Titanium. 
+            <small>(#335, #338)</small>
+          </li>
+          <li>
+            You can now <tt>_.groupBy(list, 'property')</tt> as a shortcut for
+            grouping values by a particular common property.
+          </li>
+          <li>
+            <tt>_.throttle</tt>'d functions now fire immediately upon invocation, 
+            and are rate-limited thereafter <small>(#170, #266)</small>.
+          </li>
+          <li>
+            Most of the <tt>_.is[Type]</tt> checks no longer ducktype.
+          </li>
+          <li>
+            The <tt>_.bind</tt> function now also works on constructors, a-la
+            ES5 ... but you would never want to use <tt>_.bind</tt> on a 
+            constructor function.
+          </li>
+          <li>
+            <tt>_.clone</tt> no longer wraps non-object types in Objects.
+          </li>
+          <li>
+            <tt>_.find</tt> and <tt>_.filter</tt> are now the preferred names for
+            <tt>_.detect</tt> and <tt>_.select</tt>.
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.2.0</b> &mdash; <small><i>Oct. 5, 2011</i></small><br />
         <ul>
diff --git a/package.json b/package.json
index eb4eee826..54f839863 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.2.0"
+  "version"       : "1.2.1"
 }
diff --git a/underscore-min.js b/underscore-min.js
index caa773615..ad3756028 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,29 +1,30 @@
-// Underscore.js 1.2.0
+// Underscore.js 1.2.1
 // (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
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+b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);if(!c&&b.isEmpty(a))return-Infinity;var e={computed:-Infinity};j(a,function(a,b,h){b=c?c.call(d,a,b,h):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);if(!c&&b.isEmpty(a))return Infinity;var e={computed:Infinity};j(a,function(a,b,h){b=c?c.call(d,a,b,h):a;b<e.computed&&(e={value:a,computed:b})});return e.value};b.shuffle=function(a){var b=[],d;
+j(a,function(a,g){g==0?b[0]=a:(d=Math.floor(Math.random()*(g+1)),b[g]=b[d],b[d]=a)});return b};b.sortBy=function(a,c,d){return b.pluck(b.map(a,function(a,b,f){return{value:a,criteria:c.call(d,a,b,f)}}).sort(function(a,b){var c=a.criteria,d=b.criteria;return c<d?-1:c>d?1:0}),"value")};b.groupBy=function(a,c){var d={},e=b.isFunction(c)?c:function(a){return a[c]};j(a,function(a,b){var c=e(a,b);(d[c]||(d[c]=[])).push(a)});return d};b.sortedIndex=function(a,c,d){d||(d=b.identity);for(var e=0,g=a.length;e<
+g;){var f=e+g>>1;d(a[f])<d(c)?e=f+1:g=f}return e};b.toArray=function(a){return!a?[]:a.toArray?a.toArray():b.isArray(a)?i.call(a):b.isArguments(a)?i.call(a):b.values(a)};b.size=function(a){return b.toArray(a).length};b.first=b.head=function(a,b,d){return b!=null&&!d?i.call(a,0,b):a[0]};b.initial=function(a,b,d){return i.call(a,0,a.length-(b==null||d?1:b))};b.last=function(a,b,d){return b!=null&&!d?i.call(a,a.length-b):a[a.length-1]};b.rest=b.tail=function(a,b,d){return i.call(a,b==null||d?1:b)};b.compact=
+function(a){return b.filter(a,function(a){return!!a})};b.flatten=function(a,c){return b.reduce(a,function(a,e){if(b.isArray(e))return a.concat(c?e:b.flatten(e));a[a.length]=e;return a},[])};b.without=function(a){return b.difference(a,i.call(arguments,1))};b.uniq=b.unique=function(a,c,d){var d=d?b.map(a,d):a,e=[];b.reduce(d,function(d,f,h){if(0==h||(c===true?b.last(d)!=f:!b.include(d,f)))d[d.length]=f,e[e.length]=a[h];return d},[]);return e};b.union=function(){return b.uniq(b.flatten(arguments,true))};
+b.intersection=b.intersect=function(a){var c=i.call(arguments,1);return b.filter(b.uniq(a),function(a){return b.every(c,function(c){return b.indexOf(c,a)>=0})})};b.difference=function(a,c){return b.filter(a,function(a){return!b.include(c,a)})};b.zip=function(){for(var a=i.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),e=0;e<c;e++)d[e]=b.pluck(a,""+e);return d};b.indexOf=function(a,c,d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(q&&a.indexOf===q)return a.indexOf(c);
+for(d=0,e=a.length;d<e;d++)if(a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(C&&a.lastIndexOf===C)return a.lastIndexOf(b);for(var d=a.length;d--;)if(a[d]===b)return d;return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);for(var d=arguments[2]||1,e=Math.max(Math.ceil((b-a)/d),0),g=0,f=Array(e);g<e;)f[g++]=a,a+=d;return f};var E=function(){};b.bind=function(a,c){var d,e;if(a.bind===s&&s)return s.apply(a,i.call(arguments,1));if(!b.isFunction(a))throw new TypeError;
+e=i.call(arguments,2);return d=function(){if(!(this instanceof d))return a.apply(c,e.concat(i.call(arguments)));E.prototype=a.prototype;var b=new E,f=a.apply(b,e.concat(i.call(arguments)));return Object(f)===f?f:b}};b.bindAll=function(a){var c=i.call(arguments,1);c.length==0&&(c=b.functions(a));j(c,function(c){a[c]=b.bind(a[c],a)});return a};b.memoize=function(a,c){var d={};c||(c=b.identity);return function(){var b=c.apply(this,arguments);return m.call(d,b)?d[b]:d[b]=a.apply(this,arguments)}};b.delay=
+function(a,b){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(i.call(arguments,1)))};b.throttle=function(a,c){var d,e,g,f,h;h=b.debounce(function(){f=false},c);return function(){e=this;g=arguments;var b;d||(d=setTimeout(function(){d=null;a.apply(e,g);h()},c));f||a.apply(e,g);h&&h();f=true}};b.debounce=function(a,b){var d;return function(){var e=this,g=arguments;clearTimeout(d);d=setTimeout(function(){d=null;a.apply(e,
+g)},b)}};b.once=function(a){var b=false,d;return function(){if(b)return d;b=true;return d=a.apply(this,arguments)}};b.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=i.call(arguments);return function(){for(var b=i.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return function(){if(--a<1)return b.apply(this,arguments)}};b.keys=H||function(a){if(a!==Object(a))throw new TypeError("Invalid object");
+var b=[],d;for(d in a)m.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){var c=[],d;for(d in a)b.isFunction(a[d])&&c.push(d);return c.sort()};b.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){j(i.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return!b.isObject(a)?a:b.isArray(a)?a.slice():b.extend({},
+a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,b){return u(a,b,[])};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(m.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=p||function(a){return l.call(a)=="[object Array]"};b.isObject=function(a){return a===Object(a)};b.isArguments=l.call(arguments)=="[object Arguments]"?function(a){return l.call(a)=="[object Arguments]"}:function(a){return!(!a||!m.call(a,
+"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===
+void 0};b.noConflict=function(){r._=F;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.escape=function(a){return(""+a).replace(/&(?!\w+;|#\d+;|#x[\da-f]+;)/gi,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#x27;").replace(/\//g,"&#x2F;")};b.mixin=function(a){j(b.functions(a),function(c){I(c,b[c]=a[c])})};var J=0;b.uniqueId=function(a){var b=J++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,
+interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape,function(a,b){return"',_.escape("+b.replace(/\\'/g,"'")+"),'"}).replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+"__p.push('"}).replace(/\r/g,
+"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",d=new Function("obj",d);return c?d(c):d};var n=function(a){this._wrapped=a};b.prototype=n.prototype;var t=function(a,c){return c?b(a).chain():a},I=function(a,c){n.prototype[a]=function(){var a=i.call(arguments);G.call(a,this._wrapped);return t(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];n.prototype[a]=function(){b.apply(this._wrapped,arguments);return t(this._wrapped,
+this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];n.prototype[a]=function(){return t(b.apply(this._wrapped,arguments),this._chain)}});n.prototype.chain=function(){this._chain=true;return this};n.prototype.value=function(){return this._wrapped}})();
diff --git a/underscore.js b/underscore.js
index 5470fa6b3..ab4c26094 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.2.0
+//     Underscore.js 1.2.1
 //     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -67,7 +67,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.2.0';
+  _.VERSION = '1.2.1';
 
   // Collection Functions
   // --------------------

From 9fcaac97b6d4d5e243c5fc9eab27979f8f5fbf59 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 14:39:14 -0400
Subject: [PATCH 401/533] Removing a redundant finishThrottle check, renaming
 vars.

---
 underscore.js | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/underscore.js b/underscore.js
index ab4c26094..60cf2ca8c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -523,18 +523,18 @@
   // Returns a function, that, when invoked, will only be triggered at most once
   // during a given window of time.
   _.throttle = function(func, wait) {
-    var timeout, context, args, throttling, finishThrottle;
-    finishThrottle = _.debounce(function(){ throttling = false; }, wait);
+    var context, args, timeout, throttling;
+    var whenDone = _.debounce(function(){ throttling = false; }, wait);
     return function() {
       context = this; args = arguments;
-      var throttler = function() {
+      var later = function() {
         timeout = null;
         func.apply(context, args);
-        finishThrottle();
+        whenDone();
       };
-      if (!timeout) timeout = setTimeout(throttler, wait);
+      if (!timeout) timeout = setTimeout(later, wait);
       if (!throttling) func.apply(context, args);
-      if (finishThrottle) finishThrottle();
+      whenDone();
       throttling = true;
     };
   };
@@ -546,12 +546,12 @@
     var timeout;
     return function() {
       var context = this, args = arguments;
-      var throttler = function() {
+      var later = function() {
         timeout = null;
         func.apply(context, args);
       };
       clearTimeout(timeout);
-      timeout = setTimeout(throttler, wait);
+      timeout = setTimeout(later, wait);
     };
   };
 

From 29f4478a86c0dfcdb92ef0ef76e1fc19f18f293d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 24 Oct 2011 16:16:18 -0400
Subject: [PATCH 402/533] Fixing _.throttle() to only execute once if called
 once. #170 comments.

---
 test/functions.js | 16 ++++++++++++++++
 underscore.js     | 12 ++++++++----
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 5bcf215b7..3df3e961e 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -118,6 +118,22 @@ $(document).ready(function() {
     _.delay(function(){ ok(value == 7, "updated to latest value"); start(); }, 400);
   });
 
+  asyncTest("functions: throttle once", 1, function() {
+    var counter = 0;
+    var incr = function(){ counter++; };
+    var throttledIncr = _.throttle(incr, 100);
+    throttledIncr();
+    _.delay(function(){ ok(counter == 1, "incr was called once"); start(); }, 220);
+  });
+
+  asyncTest("functions: throttle twice", 1, function() {
+    var counter = 0;
+    var incr = function(){ counter++; };
+    var throttledIncr = _.throttle(incr, 100);
+    throttledIncr(); throttledIncr();
+    _.delay(function(){ ok(counter == 2, "incr was called twice"); start(); }, 220);
+  });
+
   asyncTest("functions: debounce", 1, function() {
     var counter = 0;
     var incr = function(){ counter++; };
diff --git a/underscore.js b/underscore.js
index 60cf2ca8c..2462d767f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -523,17 +523,21 @@
   // Returns a function, that, when invoked, will only be triggered at most once
   // during a given window of time.
   _.throttle = function(func, wait) {
-    var context, args, timeout, throttling;
-    var whenDone = _.debounce(function(){ throttling = false; }, wait);
+    var context, args, timeout, throttling, more;
+    var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
     return function() {
       context = this; args = arguments;
       var later = function() {
         timeout = null;
-        func.apply(context, args);
+        if (more) func.apply(context, args);
         whenDone();
       };
       if (!timeout) timeout = setTimeout(later, wait);
-      if (!throttling) func.apply(context, args);
+      if (throttling) {
+        more = true;
+      } else {
+        func.apply(context, args);
+      }
       whenDone();
       throttling = true;
     };

From ad65e8cb03a9191203cd280290c13b49ebcd86c9 Mon Sep 17 00:00:00 2001
From: "Neil E. Pearson" <neil@helium.net.au>
Date: Tue, 25 Oct 2011 16:40:50 +1100
Subject: [PATCH 403/533] Fixed _.template() HTML escaping for when _ isn't in
 scope, due to noConflict() and minification.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 2462d767f..1f7df5ad5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -899,8 +899,8 @@
          .replace(/\n/g, '\\n')
          .replace(/\t/g, '\\t')
          + "');}return __p.join('');";
-    var func = new Function('obj', tmpl);
-    return data ? func(data) : func;
+    var func = new Function('obj', '_', tmpl);
+    return data ? func(data, _) : function(data) { return func(data, _) };
   };
 
   // The OOP Wrapper

From a0b3feca858db697efbfe4a5d6e9a03cc5adefe1 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Tue, 25 Oct 2011 22:45:48 -0600
Subject: [PATCH 404/533] `_.isEqual`: Use `[[Class]]` checking for consistency
 and performance.

* Objects with different `[[Class]]` names are no longer equivalent.
* String, number, and boolean primitives and their corresponding wrappers (e.g., `"5"` and `new String("5")`) are now equivalent.
* Arrays are now recursively compared by their numeric properties only. All non-numeric properties are ignored.
---
 test/objects.js |  16 ++++----
 underscore.js   | 104 ++++++++++++++++++++++++++----------------------
 2 files changed, 64 insertions(+), 56 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 7e6cd7cc1..702e5682b 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -94,19 +94,19 @@ $(document).ready(function() {
     // String object and primitive comparisons.
     ok(_.isEqual("Curly", "Curly"), "Identical string primitives are equal");
     ok(_.isEqual(new String("Curly"), new String("Curly")), "String objects with identical primitive values are equal");
+    ok(_.isEqual(new String("Curly"), "Curly"), "String primitives and their corresponding object wrappers are equal");
+    ok(_.isEqual("Curly", new String("Curly")), "Commutative equality is implemented for string objects and primitives");
 
     ok(!_.isEqual("Curly", "Larry"), "String primitives with different values are not equal");
-    ok(!_.isEqual(new String("Curly"), "Curly"), "String primitives and their corresponding object wrappers are not equal");
-    ok(!_.isEqual("Curly", new String("Curly")), "Commutative equality is implemented for string objects and primitives");
     ok(!_.isEqual(new String("Curly"), new String("Larry")), "String objects with different primitive values are not equal");
     ok(!_.isEqual(new String("Curly"), {toString: function(){ return "Curly"; }}), "String objects and objects with a custom `toString` method are not equal");
 
     // Number object and primitive comparisons.
     ok(_.isEqual(75, 75), "Identical number primitives are equal");
     ok(_.isEqual(new Number(75), new Number(75)), "Number objects with identical primitive values are equal");
+    ok(_.isEqual(75, new Number(75)), "Number primitives and their corresponding object wrappers are equal");
+    ok(_.isEqual(new Number(75), 75), "Commutative equality is implemented for number objects and primitives");
 
-    ok(!_.isEqual(75, new Number(75)), "Number primitives and their corresponding object wrappers are not equal");
-    ok(!_.isEqual(new Number(75), 75), "Commutative equality is implemented for number objects and primitives");
     ok(!_.isEqual(new Number(75), new Number(63)), "Number objects with different primitive values are not equal");
     ok(!_.isEqual(new Number(63), {valueOf: function(){ return 63; }}), "Number objects and objects with a `valueOf` method are not equal");
 
@@ -119,8 +119,8 @@ $(document).ready(function() {
     // Boolean object and primitive comparisons.
     ok(_.isEqual(true, true), "Identical boolean primitives are equal");
     ok(_.isEqual(new Boolean, new Boolean), "Boolean objects with identical primitive values are equal");
-    ok(!_.isEqual(true, new Boolean(true)), "Boolean primitives and their corresponding object wrappers are not equal");
-    ok(!_.isEqual(new Boolean(true), true), "Commutative equality is implemented for booleans");
+    ok(_.isEqual(true, new Boolean(true)), "Boolean primitives and their corresponding object wrappers are equal");
+    ok(_.isEqual(new Boolean(true), true), "Commutative equality is implemented for booleans");
     ok(!_.isEqual(new Boolean(true), new Boolean), "Boolean objects with different primitive values are not equal");
 
     // Common type coercions.
@@ -178,7 +178,7 @@ $(document).ready(function() {
     b.join = b.pop = b.reverse = b.shift = b.slice = b.splice = b.concat = b.sort = b.unshift = null;
 
     // Array elements and properties.
-    ok(!_.isEqual(a, b), "Arrays containing equivalent elements and different non-numeric properties are not equal");
+    ok(_.isEqual(a, b), "Arrays containing equivalent elements and different non-numeric properties are equal");
     a.push("White Rocks");
     ok(!_.isEqual(a, b), "Arrays of different lengths are not equal");
     a.push("East Boulder");
@@ -240,7 +240,7 @@ $(document).ready(function() {
     // Instances.
     ok(_.isEqual(new First, new First), "Object instances are equal");
     ok(!_.isEqual(new First, new Second), "Objects with different constructors and identical own properties are not equal");
-    ok(!_.isEqual({value: 1}, new First), "Object instances and objects sharing equivalent properties are not identical");
+    ok(!_.isEqual({value: 1}, new First), "Object instances and objects sharing equivalent properties are not equal");
     ok(!_.isEqual({value: 2}, new Second), "The prototype chain of objects should not be examined");
 
     // Circular Arrays.
diff --git a/underscore.js b/underscore.js
index 2462d767f..19f407acd 100644
--- a/underscore.js
+++ b/underscore.js
@@ -667,48 +667,40 @@
     // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
     if (a === b) return a !== 0 || 1 / a == 1 / b;
     // A strict comparison is necessary because `null == undefined`.
-    if ((a == null) || (b == null)) return a === b;
+    if (a == null || b == null) return a === b;
     // Unwrap any wrapped objects.
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
     if (_.isFunction(a.isEqual)) return a.isEqual(b);
     if (_.isFunction(b.isEqual)) return b.isEqual(a);
-    // Compare object types.
-    var typeA = typeof a;
-    if (typeA != typeof b) return false;
-    // Optimization; ensure that both values are truthy or falsy.
-    if (!a != !b) return false;
-    // `NaN` values are equal.
-    if (_.isNaN(a)) return _.isNaN(b);
-    // Compare string objects by value.
-    var isStringA = _.isString(a), isStringB = _.isString(b);
-    if (isStringA || isStringB) return isStringA && isStringB && String(a) == String(b);
-    // Compare number objects by value.
-    var isNumberA = _.isNumber(a), isNumberB = _.isNumber(b);
-    if (isNumberA || isNumberB) return isNumberA && isNumberB && +a == +b;
-    // Compare boolean objects by value. The value of `true` is 1; the value of `false` is 0.
-    var isBooleanA = _.isBoolean(a), isBooleanB = _.isBoolean(b);
-    if (isBooleanA || isBooleanB) return isBooleanA && isBooleanB && +a == +b;
-    // Compare dates by their millisecond values.
-    var isDateA = _.isDate(a), isDateB = _.isDate(b);
-    if (isDateA || isDateB) return isDateA && isDateB && a.getTime() == b.getTime();
-    // Compare RegExps by their source patterns and flags.
-    var isRegExpA = _.isRegExp(a), isRegExpB = _.isRegExp(b);
-    if (isRegExpA || isRegExpB) {
-      // Ensure commutative equality for RegExps.
-      return isRegExpA && isRegExpB &&
-             a.source == b.source &&
-             a.global == b.global &&
-             a.multiline == b.multiline &&
-             a.ignoreCase == b.ignoreCase;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return String(a) == String(b);
+      case '[object Number]':
+      case '[object Boolean]':
+        // Coerce numbers, dates, and booleans to numeric primitive values.
+        a = +a;
+        b = +b;
+        // `NaN`s are equivalent, but non-reflexive.
+        return a != a ? b != b : a == b;
+      case '[object Date]':
+        // Compare dates by their millisecond representations. Invalid dates are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
     }
-    // Ensure that both values are objects.
-    if (typeA != 'object') return false;
-    // Arrays or Arraylikes with different lengths are not equal.
-    if (a.length !== b.length) return false;
-    // Objects with different constructors are not equal.
-    if (a.constructor !== b.constructor) return false;
+    if (typeof a != 'object' || typeof b != 'object') return false;
     // Assume equality for cyclic structures. The algorithm for detecting cyclic
     // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
     var length = stack.length;
@@ -720,21 +712,37 @@
     // Add the first object to the stack of traversed objects.
     stack.push(a);
     var size = 0, result = true;
-    // Deep compare objects.
-    for (var key in a) {
-      if (hasOwnProperty.call(a, key)) {
-        // Count the expected number of properties.
-        size++;
-        // Deep compare each member.
-        if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          // Ensure commutative equality for sparse arrays.
+          if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
+        }
       }
-    }
-    // Ensure that both objects contain the same number of properties.
-    if (result) {
-      for (key in b) {
-        if (hasOwnProperty.call(b, key) && !size--) break;
+    } else {
+      // Objects with different constructors are not equivalent.
+      if ("constructor" in a == "constructor" in b && a.constructor != b.constructor) return false;
+      // Deep compare objects.
+      for (var key in a) {
+        if (hasOwnProperty.call(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (hasOwnProperty.call(b, key) && !size--) break;
+        }
+        result = !size;
       }
-      result = !size;
     }
     // Remove the first object from the stack of traversed objects.
     stack.pop();

From ed3c05e74c4e332929b00e1613fcdd88988721a3 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Tue, 25 Oct 2011 23:20:31 -0600
Subject: [PATCH 405/533] `_.isEqual`: Fix an erroneous check for the
 `constructor` property.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 19f407acd..bac024592 100644
--- a/underscore.js
+++ b/underscore.js
@@ -726,7 +726,7 @@
       }
     } else {
       // Objects with different constructors are not equivalent.
-      if ("constructor" in a == "constructor" in b && a.constructor != b.constructor) return false;
+      if ("constructor" in a != "constructor" in b || a.constructor != b.constructor) return false;
       // Deep compare objects.
       for (var key in a) {
         if (hasOwnProperty.call(a, key)) {

From 3d1605f241775d9a976a174f60175ed1c4e4ee06 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Wed, 26 Oct 2011 11:35:49 -0600
Subject: [PATCH 406/533] `_.isEqual`: Ensure that an `egal` comparison is
 performed for number objects and primitives.

---
 test/objects.js |  2 ++
 underscore.js   | 12 +++++++-----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 702e5682b..6d432033a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -106,6 +106,8 @@ $(document).ready(function() {
     ok(_.isEqual(new Number(75), new Number(75)), "Number objects with identical primitive values are equal");
     ok(_.isEqual(75, new Number(75)), "Number primitives and their corresponding object wrappers are equal");
     ok(_.isEqual(new Number(75), 75), "Commutative equality is implemented for number objects and primitives");
+    ok(!_.isEqual(new Number(0), -0), "`new Number(0)` and `-0` are not equal");
+    ok(!_.isEqual(0, new Number(-0)), "Commutative equality is implemented for `new Number(0)` and `-0`");
 
     ok(!_.isEqual(new Number(75), new Number(63)), "Number objects with different primitive values are not equal");
     ok(!_.isEqual(new Number(63), {valueOf: function(){ return 63; }}), "Number objects and objects with a `valueOf` method are not equal");
diff --git a/underscore.js b/underscore.js
index bac024592..934f3f83e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -684,14 +684,16 @@
         // equivalent to `new String("5")`.
         return String(a) == String(b);
       case '[object Number]':
-      case '[object Boolean]':
-        // Coerce numbers, dates, and booleans to numeric primitive values.
         a = +a;
         b = +b;
-        // `NaN`s are equivalent, but non-reflexive.
-        return a != a ? b != b : a == b;
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != a ? b != b : (a == 0 ? 1 / a == 1 / b : a == b);
       case '[object Date]':
-        // Compare dates by their millisecond representations. Invalid dates are not equivalent.
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
         return +a == +b;
       // RegExps are compared by their source patterns and flags.
       case '[object RegExp]':

From 81bad47bc0067728a9f0014436ab3919578b3e83 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Fri, 28 Oct 2011 17:02:20 -0400
Subject: [PATCH 407/533] style, clarity

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 1f7df5ad5..02c50d14a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -206,7 +206,7 @@
     if (obj == null) return found;
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     found = any(obj, function(value) {
-      if (value === target) return true;
+      return value === target;
     });
     return found;
   };

From efd29e12cdf9208f8ee59ed67b67efc38633d71b Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@gmail.com>
Date: Sun, 30 Oct 2011 20:45:56 -0600
Subject: [PATCH 408/533] `_.isEqual`: Issue #355.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 934f3f83e..dff3daaf3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -741,7 +741,7 @@
       // Ensure that both objects contain the same number of properties.
       if (result) {
         for (key in b) {
-          if (hasOwnProperty.call(b, key) && !size--) break;
+          if (hasOwnProperty.call(b, key) && !(size--)) break;
         }
         result = !size;
       }

From 7f23d279a8704c51791375b636ff532b9d476e45 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 31 Oct 2011 10:40:45 -0400
Subject: [PATCH 409/533] Fixes #335.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 1f7df5ad5..80a1867f3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -732,7 +732,7 @@
     // Ensure that both objects contain the same number of properties.
     if (result) {
       for (key in b) {
-        if (hasOwnProperty.call(b, key) && !size--) break;
+        if (hasOwnProperty.call(b, key) && !(size--)) break;
       }
       result = !size;
     }

From ba96d168ec08436d01a97871bb7d2fcaefe79186 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 31 Oct 2011 12:31:02 -0400
Subject: [PATCH 410/533] Fixes Issue #350 -- Making _.escape dumber to allow
 double-escaping of HTML entities.

---
 test/utility.js | 5 +++++
 underscore.js   | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index 976b3b996..f1f0bfb56 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -41,6 +41,11 @@ $(document).ready(function() {
     equals(_('champ').myReverse(), 'pmahc', 'mixed in a function to the OOP wrapper');
   });
 
+  test("utility: _.escape", function() {
+    equals(_.escape("Curly & Moe"), "Curly &amp; Moe");
+    equals(_.escape("Curly &amp; Moe"), "Curly &amp;amp; Moe");
+  });
+
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
diff --git a/underscore.js b/underscore.js
index 88f8dd93e..3737ddc1b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -849,7 +849,7 @@
 
   // Escape a string for HTML interpolation.
   _.escape = function(string) {
-    return (''+string).replace(/&(?!\w+;|#\d+;|#x[\da-f]+;)/gi, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
+    return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
   };
 
   // Add your own custom functions to the Underscore object, ensuring that

From aa916b8cfe565dc206d85c4cb74fbb6c499067a7 Mon Sep 17 00:00:00 2001
From: kapooostin <kapooostin@gmail.com>
Date: Mon, 31 Oct 2011 23:14:17 +0400
Subject: [PATCH 411/533] Added explicit definition of global context for
 compatibility with Adobe JS

Signed-off-by: kapooostin <kapooostin@gmail.com>
---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 88f8dd93e..bb2a40cf4 100644
--- a/underscore.js
+++ b/underscore.js
@@ -959,4 +959,4 @@
     return this._wrapped;
   };
 
-})();
+}).call(this);

From aedab9c7dd7c737445acc306db8f274c4423862c Mon Sep 17 00:00:00 2001
From: Jeff McGee <JeffAMcGee@gmail.com>
Date: Thu, 3 Nov 2011 18:47:07 -0500
Subject: [PATCH 412/533] fixed any() for strings on IE8

---
 test/collections.js | 2 ++
 underscore.js       | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/collections.js b/test/collections.js
index 009d2f327..1726629eb 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -140,6 +140,8 @@ $(document).ready(function() {
     ok(!_.any([]), 'the empty set');
     ok(!_.any([false, false, false]), 'all false values');
     ok(_.any([false, false, true]), 'one true value');
+    ok(_.any([null, 0, 'yes', false]), 'a string');
+    ok(!_.any([null, 0, '', false]), 'falsy values');
     ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
     ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
     ok(_.some([false, false, true]), 'aliased as "some"');
diff --git a/underscore.js b/underscore.js
index d27970bbe..6ade0c57d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -194,7 +194,7 @@
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
-      if (result |= iterator.call(context, value, index, list)) return breaker;
+      if (result = result||iterator.call(context, value, index, list)) return breaker;
     });
     return !!result;
   };

From 5d21f2f6019341fbd2aa330312005b6ed4aac640 Mon Sep 17 00:00:00 2001
From: Jeff McGee <JeffAMcGee@gmail.com>
Date: Thu, 3 Nov 2011 23:16:47 -0500
Subject: [PATCH 413/533] changed implementation of any to short-circuit when
 result is truthy

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 6ade0c57d..6be62ff3b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -194,7 +194,7 @@
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
-      if (result = result||iterator.call(context, value, index, list)) return breaker;
+      if (result || (result = iterator.call(context, value, index, list))) return breaker;
     });
     return !!result;
   };

From 05c107576b0bf9ce8e0bdb4433987f70e7e82aa3 Mon Sep 17 00:00:00 2001
From: David Hirtle <wachunga@gmail.com>
Date: Tue, 8 Nov 2011 01:13:08 -0800
Subject: [PATCH 414/533] Fix bug with _.last(a, n) incorrectly handling n >
 a.length

---
 test/arrays.js | 2 ++
 underscore.js  | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/arrays.js b/test/arrays.js
index c648f081b..ae00faf0a 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -7,6 +7,7 @@ $(document).ready(function() {
     equals(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"');
     equals(_.first([1,2,3], 0).join(', '), "", 'can pass an index to first');
     equals(_.first([1,2,3], 2).join(', '), '1, 2', 'can pass an index to first');
+    equals(_.first([1,2,3], 5).join(', '), '1, 2, 3', 'can pass an index to first');
     var result = (function(){ return _.first(arguments); })(4, 3, 2, 1);
     equals(result, 4, 'works on an arguments object.');
     result = _.map([[1,2,3],[1,2,3]], _.first);
@@ -37,6 +38,7 @@ $(document).ready(function() {
     equals(_.last([1,2,3]), 3, 'can pull out the last element of an array');
     equals(_.last([1,2,3], 0).join(', '), "", 'can pass an index to last');
     equals(_.last([1,2,3], 2).join(', '), '2, 3', 'can pass an index to last');
+    equals(_.last([1,2,3], 5).join(', '), '1, 2, 3', 'can pass an index to last');
     var result = (function(){ return _(arguments).last(); })(1, 2, 3, 4);
     equals(result, 4, 'works on an arguments object');
     result = _.map([[1,2,3],[1,2,3]], _.last);
diff --git a/underscore.js b/underscore.js
index d27970bbe..7f936f600 100644
--- a/underscore.js
+++ b/underscore.js
@@ -335,7 +335,7 @@
   // Get the last element of an array. Passing **n** will return the last N
   // values in the array. The **guard** check allows it to work with `_.map`.
   _.last = function(array, n, guard) {
-    return (n != null) && !guard ? slice.call(array, array.length - n) : array[array.length - 1];
+    return (n != null) && !guard ? slice.call(array, Math.max(array.length - n, 0)) : array[array.length - 1];
   };
 
   // Returns everything but the first entry of the array. Aliased as `tail`.

From f04c6bf779b288cf7a2bcd68840d28fb253c3438 Mon Sep 17 00:00:00 2001
From: Dan Tillberg <dan@tillberg.us>
Date: Thu, 10 Nov 2011 11:55:21 -0500
Subject: [PATCH 415/533] _.after(0, callback) now fires callback immediately

---
 test/functions.js | 1 +
 underscore.js     | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 3df3e961e..f084b015e 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -188,6 +188,7 @@ $(document).ready(function() {
 
     equals(testAfter(5, 5), 1, "after(N) should fire after being called N times");
     equals(testAfter(5, 4), 0, "after(N) should not fire unless called N times");
+    equals(testAfter(0, 0), 1, "after(0) should fire immediately");
   });
 
 });
diff --git a/underscore.js b/underscore.js
index d27970bbe..7420e87d1 100644
--- a/underscore.js
+++ b/underscore.js
@@ -595,9 +595,9 @@
 
   // Returns a function that will only be executed after being called N times.
   _.after = function(times, func) {
-    return function() {
+    return times ? function() {
       if (--times < 1) { return func.apply(this, arguments); }
-    };
+    } : func();
   };
 
   // Object Functions

From 0acab3dcd316c71de50cd10932c77df3a74a57e4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Nov 2011 14:04:13 -0500
Subject: [PATCH 416/533] Fixes #369 -- adding extra semicolons to templtes in
 case you forget.

---
 test/utility.js | 3 +++
 underscore.js   | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index f1f0bfb56..0f53bd510 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -51,6 +51,9 @@ $(document).ready(function() {
     var result = basicTemplate({thing : 'This'});
     equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
 
+    var sansSemicolonTemplate = _.template("A <% this %> B");
+    equals(sansSemicolonTemplate(), "A  B");
+
     var backslashTemplate = _.template("<%= thing %> is \\ridanculous");
     equals(backslashTemplate({thing: 'This'}), "This is \\ridanculous");
 
diff --git a/underscore.js b/underscore.js
index 3737ddc1b..9aced7791 100644
--- a/underscore.js
+++ b/underscore.js
@@ -893,7 +893,7 @@
          })
          .replace(c.evaluate || null, function(match, code) {
            return "');" + code.replace(/\\'/g, "'")
-                              .replace(/[\r\n\t]/g, ' ') + "__p.push('";
+                              .replace(/[\r\n\t]/g, ' ') + ";__p.push('";
          })
          .replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')

From 51b8293ceed3e2db6e81f927e1f68f0ecdccae30 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Nov 2011 14:14:30 -0500
Subject: [PATCH 417/533] re-styling previous commit.

---
 underscore.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 8032357c3..bf0e70792 100644
--- a/underscore.js
+++ b/underscore.js
@@ -595,9 +595,10 @@
 
   // Returns a function that will only be executed after being called N times.
   _.after = function(times, func) {
-    return times ? function() {
+    if (times <= 0) return func();
+    return function() {
       if (--times < 1) { return func.apply(this, arguments); }
-    } : func();
+    };
   };
 
   // Object Functions

From f29785a0b7871ddbc6dd86da233ae9031d57c857 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Nov 2011 14:27:44 -0500
Subject: [PATCH 418/533] cleaning up _.last implementation.

---
 underscore.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 0079954ec..8a8233335 100644
--- a/underscore.js
+++ b/underscore.js
@@ -335,7 +335,11 @@
   // Get the last element of an array. Passing **n** will return the last N
   // values in the array. The **guard** check allows it to work with `_.map`.
   _.last = function(array, n, guard) {
-    return (n != null) && !guard ? slice.call(array, Math.max(array.length - n, 0)) : array[array.length - 1];
+    if ((n != null) && !guard) {
+      return slice.call(array, Math.max(array.length - n, 0));
+    } else {
+      return array[array.length - 1];
+    }
   };
 
   // Returns everything but the first entry of the array. Aliased as `tail`.

From 135f93e520f4dfb10aa7b5fe9178c3178449e773 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Nov 2011 14:39:19 -0500
Subject: [PATCH 419/533] Fixes #360, documenting _.escape.

---
 index.html | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 8c8e7c914..b2d4a850b 100644
--- a/index.html
+++ b/index.html
@@ -192,7 +192,7 @@
       <span class="methods"><a href="#noConflict">noConflict</a>,
       <a href="#identity">identity</a>, <a href="#times">times</a>, 
       <a href="#mixin">mixin</a>, <a href="#uniqueId">uniqueId</a>, 
-      <a href="#template">template</a></span>
+      <a href="#escape">escape</a>, <a href="#template">template</a></span>
     </p>
 
     <p>
@@ -1183,6 +1183,16 @@ _("fabio").capitalize();
 _.uniqueId('contact_');
 =&gt; 'contact_104'</pre>
 
+      <p id="escape">
+        <b class="header">escape</b><code>_.escape(string)</code>
+        <br />
+        Escapes a string for insertion into HTML, replacing 
+        <tt>&amp;</tt>, <tt>&lt;</tt>, <tt>&gt;</tt>, <tt>&quot;</tt>, <tt>&#x27;</tt>, and <tt>&#x2F;</tt> characters.
+      </p>
+      <pre>
+_.escape('Curly, Larry &amp; Moe');
+=&gt; "Curly, Larry &amp;amp; Moe"</pre>
+
       <p id="template">
         <b class="header">template</b><code>_.template(templateString, [context])</code>
         <br />

From 8c346141dc9687c5952991195eefe1988cf92124 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 14 Nov 2011 15:28:19 -0500
Subject: [PATCH 420/533] Underscore.js 1.2.2

---
 docs/underscore.html | 165 ++++++++++++++++++++++++-------------------
 index.html           |  29 +++++++-
 package.json         |   2 +-
 underscore-min.js    |  48 ++++++-------
 underscore.js        |   4 +-
 5 files changed, 146 insertions(+), 102 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index 6e44f0cf8..d2dafbd59 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.1
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.2
 (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -32,7 +32,7 @@ CommonJS, add <code>_</code> to the global object.</p>             </td>
       <span class="k">return</span> <span class="nx">_</span><span class="p">;</span>
     <span class="p">});</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.2&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -129,7 +129,7 @@ Aliased as <code>any</code>.</p>             </td>             <td class="code">
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">|=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">||</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="o">!!</span><span class="nx">result</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
@@ -138,7 +138,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">target</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="nx">found</span> <span class="o">=</span> <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
+      <span class="k">return</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
@@ -225,7 +225,11 @@ the array, excluding the last N. The <strong>guard</strong> check allows it to w
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="p">((</span><span class="nx">n</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">n</span><span class="p">));</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Get the last element of an array. Passing <strong>n</strong> will return the last N
 values in the array. The <strong>guard</strong> check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
+    <span class="k">if</span> <span class="p">((</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">n</span><span class="p">,</span> <span class="mi">0</span><span class="p">));</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
+    <span class="p">}</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
@@ -353,18 +357,22 @@ cleared.</p>             </td>             <td class="code">               <div
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
 during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">timeout</span><span class="p">,</span> <span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">,</span> <span class="nx">throttling</span><span class="p">,</span> <span class="nx">finishThrottle</span><span class="p">;</span>
-    <span class="nx">finishThrottle</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">,</span> <span class="nx">timeout</span><span class="p">,</span> <span class="nx">throttling</span><span class="p">,</span> <span class="nx">more</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">whenDone</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="nx">more</span> <span class="o">=</span> <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
-      <span class="kd">var</span> <span class="nx">throttler</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">later</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
         <span class="nx">timeout</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
-        <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
-        <span class="nx">finishThrottle</span><span class="p">();</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">more</span><span class="p">)</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+        <span class="nx">whenDone</span><span class="p">();</span>
       <span class="p">};</span>
-      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
-      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">throttling</span><span class="p">)</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">finishThrottle</span><span class="p">)</span> <span class="nx">finishThrottle</span><span class="p">();</span>
+      <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">timeout</span><span class="p">)</span> <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">later</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">throttling</span><span class="p">)</span> <span class="p">{</span>
+        <span class="nx">more</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
+      <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+        <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+      <span class="p">}</span>
+      <span class="nx">whenDone</span><span class="p">();</span>
       <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
@@ -373,12 +381,12 @@ N milliseconds.</p>             </td>             <td class="code">
     <span class="kd">var</span> <span class="nx">timeout</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">context</span> <span class="o">=</span> <span class="k">this</span><span class="p">,</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
-      <span class="kd">var</span> <span class="nx">throttler</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+      <span class="kd">var</span> <span class="nx">later</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
         <span class="nx">timeout</span> <span class="o">=</span> <span class="kc">null</span><span class="p">;</span>
         <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
       <span class="p">};</span>
       <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
-      <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">throttler</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
+      <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">later</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
 often you call it. Useful for lazy initialization.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">once</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
@@ -406,6 +414,7 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">times</span> <span class="o">&lt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="nx">func</span><span class="p">();</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
     <span class="p">};</span>
@@ -447,49 +456,61 @@ order to perform operations on intermediate results within the chain.</p>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
-See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">((</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="p">(</span><span class="nx">b</span> <span class="o">==</span> <span class="kc">null</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span> <span class="o">||</span> <span class="nx">b</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare object types.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">typeA</span> <span class="o">=</span> <span class="k">typeof</span> <span class="nx">a</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="k">typeof</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Optimization; ensure that both values are truthy or falsy.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">a</span> <span class="o">!=</span> <span class="o">!</span><span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p><code>NaN</code> values are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">a</span><span class="p">))</span> <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>Compare string objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isStringA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isStringB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isStringA</span> <span class="o">||</span> <span class="nx">isStringB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isStringA</span> <span class="o">&amp;&amp;</span> <span class="nx">isStringB</span> <span class="o">&amp;&amp;</span> <span class="nb">String</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Compare number objects by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isNumberA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isNumberB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isNumberA</span> <span class="o">||</span> <span class="nx">isNumberB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isNumberA</span> <span class="o">&amp;&amp;</span> <span class="nx">isNumberB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Compare boolean objects by value. The value of <code>true</code> is 1; the value of <code>false</code> is 0.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isBooleanA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isBooleanB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isBooleanA</span> <span class="o">||</span> <span class="nx">isBooleanB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isBooleanA</span> <span class="o">&amp;&amp;</span> <span class="nx">isBooleanB</span> <span class="o">&amp;&amp;</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Compare dates by their millisecond values.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isDateA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isDateB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isDateA</span> <span class="o">||</span> <span class="nx">isDateB</span><span class="p">)</span> <span class="k">return</span> <span class="nx">isDateA</span> <span class="o">&amp;&amp;</span> <span class="nx">isDateB</span> <span class="o">&amp;&amp;</span> <span class="nx">a</span><span class="p">.</span><span class="nx">getTime</span><span class="p">()</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">getTime</span><span class="p">();</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Compare RegExps by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">isRegExpA</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">a</span><span class="p">),</span> <span class="nx">isRegExpB</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">isRegExpA</span> <span class="o">||</span> <span class="nx">isRegExpB</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Ensure commutative equality for RegExps.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">return</span> <span class="nx">isRegExpA</span> <span class="o">&amp;&amp;</span> <span class="nx">isRegExpB</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">source</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">global</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">&amp;&amp;</span>
-             <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span><span class="p">;</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Ensure that both values are objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">typeA</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Arrays or Arraylikes with different lengths are not equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">length</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Objects with different constructors are not equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic
+    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare <code>[[Class]]</code> names.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">className</span> <span class="o">=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">className</span> <span class="o">!=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="k">switch</span> <span class="p">(</span><span class="nx">className</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Strings, numbers, dates, and booleans are compared by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object String]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Primitives and their corresponding object wrappers are equivalent; thus, <code>"5"</code> is
+equivalent to <code>new String("5")</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nb">String</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+      <span class="k">case</span> <span class="s1">&#39;[object Number]&#39;</span><span class="o">:</span>
+        <span class="nx">a</span> <span class="o">=</span> <span class="o">+</span><span class="nx">a</span><span class="p">;</span>
+        <span class="nx">b</span> <span class="o">=</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p><code>NaN</code>s are equivalent, but non-reflexive. An <code>egal</code> comparison is performed for
+other numeric values.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nx">a</span> <span class="o">!=</span> <span class="nx">a</span> <span class="o">?</span> <span class="nx">b</span> <span class="o">!=</span> <span class="nx">b</span> <span class="o">:</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="mi">0</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">);</span>
+      <span class="k">case</span> <span class="s1">&#39;[object Date]&#39;</span><span class="o">:</span>
+      <span class="k">case</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Coerce dates and booleans to numeric primitive values. Dates are compared by their
+millisecond representations. Note that invalid dates with millisecond representations
+of <code>NaN</code> are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>RegExps are compared by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object RegExp]&#39;</span><span class="o">:</span>
+        <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
+               <span class="nx">a</span><span class="p">.</span><span class="nx">global</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
+               <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">&amp;&amp;</span>
+               <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span><span class="p">;</span>
+    <span class="p">}</span>
+    <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span> <span class="o">||</span> <span class="k">typeof</span> <span class="nx">b</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic
 structures is adapted from ES 5.1 section 15.12.3, abstract operation <code>JO</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">stack</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of
+    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of
 unique nested structures.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">stack</span><span class="p">[</span><span class="nx">length</span><span class="p">]</span> <span class="o">==</span> <span class="nx">a</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
-    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Recursively compare objects and arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">className</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Compare array lengths to determine if a deep comparison is necessary.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="nx">size</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+      <span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Deep compare the contents, ignoring non-numeric properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">while</span> <span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Ensure commutative equality for sparse arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+        <span class="p">}</span>
       <span class="p">}</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="k">break</span><span class="p">;</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Objects with different constructors are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="s2">&quot;constructor&quot;</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s2">&quot;constructor&quot;</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">||</span> <span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+        <span class="p">}</span>
+      <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
+          <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">))</span> <span class="k">break</span><span class="p">;</span>
+        <span class="p">}</span>
+        <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
       <span class="p">}</span>
-      <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Remove the first object from the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">();</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Remove the first object from the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given array, string, or object empty?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Is a given array, string, or object empty?
 An "empty" object has no enumerable own-properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">;</span>
     <span class="p">};</span>
@@ -497,49 +518,49 @@ Delegates to ECMA5's native Array.isArray</p>             </td>             <td
     <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Function]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object String]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p><code>NaN</code> is the only value for which <code>===</code> is not reflexive.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p><code>NaN</code> is the only value for which <code>===</code> is not reflexive.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span> <span class="o">||</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Date]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object RegExp]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="o">+</span><span class="nx">string</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&amp;(?!\w+;|#\d+;|#x[\da-f]+;)/gi</span><span class="p">,</span> <span class="s1">&#39;&amp;amp;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&lt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;lt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&gt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;gt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;quot;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;#x27;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\//g</span><span class="p">,</span><span class="s1">&#39;&amp;#x2F;&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="o">+</span><span class="nx">string</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&amp;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;amp;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&lt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;lt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&gt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;gt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;quot;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;#x27;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\//g</span><span class="p">,</span><span class="s1">&#39;&amp;#x2F;&#39;</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">escape</span>      <span class="o">:</span> <span class="sr">/&lt;%-([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -555,42 +576,42 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">evaluate</span> <span class="o">||</span> <span class="kc">null</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
            <span class="k">return</span> <span class="s2">&quot;&#39;);&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
-                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;__p.push(&#39;&quot;</span><span class="p">;</span>
+                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;;__p.push(&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\r/g</span><span class="p">,</span> <span class="s1">&#39;\\r&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/g</span><span class="p">,</span> <span class="s1">&#39;\\n&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\t/g</span><span class="p">,</span> <span class="s1">&#39;\\t&#39;</span><span class="p">)</span>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
-    <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
-    <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="o">:</span> <span class="nx">func</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+    <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="s1">&#39;_&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">)</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">)</span> <span class="p">};</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-131">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-131">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
-<span class="p">})();</span>
+<span class="p">}).</span><span class="nx">call</span><span class="p">(</span><span class="k">this</span><span class="p">);</span>
 
 </pre></div>             </td>           </tr>                </tbody>     </table>   </div> </body> </html> 
\ No newline at end of file
diff --git a/index.html b/index.html
index b2d4a850b..fe8321aef 100644
--- a/index.html
+++ b/index.html
@@ -126,11 +126,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.2.1)</a></td>
-        <td><i>33kb, Uncompressed with Comments</i></td>
+        <td><a href="underscore.js">Development Version (1.2.2)</a></td>
+        <td><i>34kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.2.1)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.2.2)</a></td>
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -1338,6 +1338,29 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.2.2</b> &mdash; <small><i>Nov. 14, 2011</i></small><br />
+        <ul>
+          <li>
+            Continued tweaks to <tt>_.isEqual</tt> semantics. Now JS primitives are
+            considered equivalent to their wrapped versions, and arrays are compared
+            by their numeric properties only <small>(#351)</small>.
+          </li>
+          <li>
+            <tt>_.escape</tt> no longer tries to be smart about not double-escaping
+            already-escaped HTML entities. Now it just escapes regardless <small>(#350)</small>.
+          </li>
+          <li>
+            In <tt>_.template</tt>, you may now leave semicolons out of evaluated
+            statements if you wish: <tt>&lt;% }) %&gt;</tt> <small>(#369)</small>.
+          </li>
+          <li>
+            <tt>_.after(callback, 0)</tt> will now trigger the callback immediately,
+            making "after" easier to use with asynchronous APIs <small>(#366)</small>. 
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.2.1</b> &mdash; <small><i>Oct. 24, 2011</i></small><br />
         <ul>
diff --git a/package.json b/package.json
index 54f839863..8481b773a 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.2.1"
+  "version"       : "1.2.2"
 }
diff --git a/underscore-min.js b/underscore-min.js
index ad3756028..fadc96eca 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,30 +1,30 @@
-// Underscore.js 1.2.1
+// Underscore.js 1.2.2
 // (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
-(function(){function u(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(b.isFunction(a.isEqual))return a.isEqual(c);if(b.isFunction(c.isEqual))return c.isEqual(a);var e=typeof a;if(e!=typeof c)return false;if(!a!=!c)return false;if(b.isNaN(a))return b.isNaN(c);var g=b.isString(a),f=b.isString(c);if(g||f)return g&&f&&String(a)==String(c);g=b.isNumber(a);f=b.isNumber(c);if(g||f)return g&&f&&+a==+c;g=b.isBoolean(a);f=b.isBoolean(c);
-if(g||f)return g&&f&&+a==+c;g=b.isDate(a);f=b.isDate(c);if(g||f)return g&&f&&a.getTime()==c.getTime();g=b.isRegExp(a);f=b.isRegExp(c);if(g||f)return g&&f&&a.source==c.source&&a.global==c.global&&a.multiline==c.multiline&&a.ignoreCase==c.ignoreCase;if(e!="object")return false;if(a.length!==c.length)return false;if(a.constructor!==c.constructor)return false;for(e=d.length;e--;)if(d[e]==a)return true;d.push(a);var e=0,g=true,h;for(h in a)if(m.call(a,h)&&(e++,!(g=m.call(c,h)&&u(a[h],c[h],d))))break;if(g){for(h in c)if(m.call(c,
-h)&&!e--)break;g=!e}d.pop();return g}var r=this,F=r._,o={},k=Array.prototype,p=Object.prototype,i=k.slice,G=k.unshift,l=p.toString,m=p.hasOwnProperty,v=k.forEach,w=k.map,x=k.reduce,y=k.reduceRight,z=k.filter,A=k.every,B=k.some,q=k.indexOf,C=k.lastIndexOf,p=Array.isArray,H=Object.keys,s=Function.prototype.bind,b=function(a){return new n(a)};if(typeof exports!=="undefined"){if(typeof module!=="undefined"&&module.exports)exports=module.exports=b;exports._=b}else typeof define==="function"&&define.amd?
-define("underscore",function(){return b}):r._=b;b.VERSION="1.2.1";var j=b.each=b.forEach=function(a,c,b){if(a!=null)if(v&&a.forEach===v)a.forEach(c,b);else if(a.length===+a.length)for(var e=0,g=a.length;e<g;e++){if(e in a&&c.call(b,a[e],e,a)===o)break}else for(e in a)if(m.call(a,e)&&c.call(b,a[e],e,a)===o)break};b.map=function(a,c,b){var e=[];if(a==null)return e;if(w&&a.map===w)return a.map(c,b);j(a,function(a,f,h){e[e.length]=c.call(b,a,f,h)});return e};b.reduce=b.foldl=b.inject=function(a,c,d,e){var g=
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+null;a.apply(e,f)},b)}};b.once=function(a){var b=false,d;return function(){if(b)return d;b=true;return d=a.apply(this,arguments)}};b.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments));return b.apply(this,d)}};b.compose=function(){var a=i.call(arguments);return function(){for(var b=i.call(arguments),d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return a<=0?b():function(){if(--a<1)return b.apply(this,arguments)}};b.keys=H||function(a){if(a!==
+Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)m.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){var c=[],d;for(d in a)b.isFunction(a[d])&&c.push(d);return c.sort()};b.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){j(i.call(arguments,1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return!b.isObject(a)?
+a:b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,b){return r(a,b,[])};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(m.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=p||function(a){return l.call(a)=="[object Array]"};b.isObject=function(a){return a===Object(a)};b.isArguments=l.call(arguments)=="[object Arguments]"?function(a){return l.call(a)=="[object Arguments]"}:
+function(a){return!(!a||!m.call(a,"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};
+b.isUndefined=function(a){return a===void 0};b.noConflict=function(){s._=F;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.escape=function(a){return(""+a).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#x27;").replace(/\//g,"&#x2F;")};b.mixin=function(a){j(b.functions(a),function(c){I(c,b[c]=a[c])})};var J=0;b.uniqueId=function(a){var b=J++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,
+interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape,function(a,b){return"',_.escape("+b.replace(/\\'/g,"'")+"),'"}).replace(d.interpolate,function(a,b){return"',"+b.replace(/\\'/g,"'")+",'"}).replace(d.evaluate||null,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ")+";__p.push('"}).replace(/\r/g,
+"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",e=new Function("obj","_",d);return c?e(c,b):function(a){return e(a,b)}};var n=function(a){this._wrapped=a};b.prototype=n.prototype;var u=function(a,c){return c?b(a).chain():a},I=function(a,c){n.prototype[a]=function(){var a=i.call(arguments);G.call(a,this._wrapped);return u(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];n.prototype[a]=function(){b.apply(this._wrapped,
+arguments);return u(this._wrapped,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];n.prototype[a]=function(){return u(b.apply(this._wrapped,arguments),this._chain)}});n.prototype.chain=function(){this._chain=true;return this};n.prototype.value=function(){return this._wrapped}}).call(this);
diff --git a/underscore.js b/underscore.js
index b6a6e104f..5579c07d3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.2.1
+//     Underscore.js 1.2.2
 //     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -67,7 +67,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.2.1';
+  _.VERSION = '1.2.2';
 
   // Collection Functions
   // --------------------

From 5c00abcf8786974ece0d6d01cfb4ba9740fa05a4 Mon Sep 17 00:00:00 2001
From: Jan Raasch <janraasch@gmail.com>
Date: Tue, 15 Nov 2011 22:46:18 +0100
Subject: [PATCH 421/533] Provided _.indexOf and _.lastIndexOf with proper
 sparse array support.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 5579c07d3..467f4ef8f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -432,7 +432,7 @@
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    for (i = 0, l = array.length; i < l; i++) if (array[i] === item) return i;
+    for (i = 0, l = array.length; i < l; i++) if (!_.isUndefined(array[i]) && array[i] === item) return i;
     return -1;
   };
 
@@ -441,7 +441,7 @@
     if (array == null) return -1;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
-    while (i--) if (array[i] === item) return i;
+    while (i--) if (!_.isUndefined(array[i]) && array[i] === item) return i;
     return -1;
   };
 

From bf7a351fd6048f096ce2de6b6a2d486c496d940c Mon Sep 17 00:00:00 2001
From: Jan Raasch <janraasch@gmail.com>
Date: Tue, 15 Nov 2011 23:55:04 +0100
Subject: [PATCH 422/533] (Actually) Provided _.indexOf and _.lastIndexOf with
 proper sparse array support.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 467f4ef8f..821084409 100644
--- a/underscore.js
+++ b/underscore.js
@@ -432,7 +432,7 @@
       return array[i] === item ? i : -1;
     }
     if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
-    for (i = 0, l = array.length; i < l; i++) if (!_.isUndefined(array[i]) && array[i] === item) return i;
+    for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
     return -1;
   };
 
@@ -441,7 +441,7 @@
     if (array == null) return -1;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
     var i = array.length;
-    while (i--) if (!_.isUndefined(array[i]) && array[i] === item) return i;
+    while (i--) if (i in array && array[i] === item) return i;
     return -1;
   };
 

From 5e7d75d6f63c94b84007f67ea34889616065b396 Mon Sep 17 00:00:00 2001
From: Andrea Zicchetti <andrea.zicchetti@gmail.com>
Date: Fri, 18 Nov 2011 17:12:53 +0100
Subject: [PATCH 423/533] Fixed a scope issue with the returned template
 function

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 5579c07d3..f351721eb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -915,7 +915,7 @@
          .replace(/\t/g, '\\t')
          + "');}return __p.join('');";
     var func = new Function('obj', '_', tmpl);
-    return data ? func(data, _) : function(data) { return func(data, _) };
+    return data ? func(data, _) : function(data) { return func.call(this,data, _) };
   };
 
   // The OOP Wrapper

From 7c9516321cfaa6dafe23c43db0886a8c7ad58f69 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 18 Nov 2011 11:19:15 -0500
Subject: [PATCH 424/533] Update underscore.js

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index f351721eb..1cfa6fd6f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -915,7 +915,7 @@
          .replace(/\t/g, '\\t')
          + "');}return __p.join('');";
     var func = new Function('obj', '_', tmpl);
-    return data ? func(data, _) : function(data) { return func.call(this,data, _) };
+    return data ? func(data, _) : function(data) { return func.call(this, data, _) };
   };
 
   // The OOP Wrapper

From 55cddd94752a9ce965f92614e395559b223c6934 Mon Sep 17 00:00:00 2001
From: Zak Johnson <zakj@nox.cx>
Date: Fri, 18 Nov 2011 19:52:35 -0800
Subject: [PATCH 425/533] Add missing comma to index.html

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index fe8321aef..fd00cec9e 100644
--- a/index.html
+++ b/index.html
@@ -180,7 +180,7 @@
       <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#defaults">defaults</a>, <a href="#clone">clone</a>, <a href="#tap">tap</a>,
       <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
       <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
-      <a href="#isNumber">isNumber</a>, <a href="#isBoolean">isBoolean</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>
+      <a href="#isNumber">isNumber</a>, <a href="#isBoolean">isBoolean</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>,
       <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>,
       <a href="#isUndefined">isUndefined</a>
       </span>

From 65d5d60bfa2878b7d30ef4e32c310fa0a87ba1d6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 23 Nov 2011 10:40:08 -0500
Subject: [PATCH 426/533] Fixes #372 -- preserve dynamic scope for _.template
 functions.

---
 test/utility.js | 6 ++++++
 underscore.js   | 5 ++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index 0f53bd510..e49d5e27f 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -93,6 +93,12 @@ $(document).ready(function() {
     var result = template({value: "<script>"});
     equals(result, '<i>&lt;script&gt;</i>');
 
+    var stooge = {
+      name: "Moe",
+      template: _.template("I'm <%= this.name %>")
+    };
+    equals(stooge.template(), "I'm Moe");
+
     if (!$.browser.msie) {
       var fromHTML = _.template($('#template').html());
       equals(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
diff --git a/underscore.js b/underscore.js
index 5579c07d3..6574cccfa 100644
--- a/underscore.js
+++ b/underscore.js
@@ -915,7 +915,10 @@
          .replace(/\t/g, '\\t')
          + "');}return __p.join('');";
     var func = new Function('obj', '_', tmpl);
-    return data ? func(data, _) : function(data) { return func(data, _) };
+    if (data) return func(data, _);
+    return function(data) {
+      return func.call(this, data, _);
+    };
   };
 
   // The OOP Wrapper

From 7653c5fe09f3cd6929698ca6dea5deb7bc0b537b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 23 Nov 2011 12:42:22 -0500
Subject: [PATCH 427/533] Issue #309, adding symmetric difference as
 _.symDifference, and making _.difference accept any number of arguments.

---
 test/arrays.js |  8 ++++++++
 underscore.js  | 15 ++++++++++++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index ae00faf0a..1c910355f 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -110,6 +110,14 @@ $(document).ready(function() {
   test("arrays: difference", function() {
     var result = _.difference([1, 2, 3], [2, 30, 40]);
     equals(result.join(' '), '1 3', 'takes the difference of two arrays');
+
+    var result = _.difference([1, 2, 3, 4], [2, 30, 40], [1, 11, 111]);
+    equals(result.join(' '), '3 4', 'takes the difference of three arrays');
+  });
+
+  test("arrays: symDifference", function() {
+    var result = _.symDifference([1, 2, 3], [2, 22, 222], [3, 33, 333], [222, 333, 444], [5]);
+    equals(result.join(' '), '1 22 33 444 5', 'takes the symmetric difference');
   });
 
   test('arrays: zip', function() {
diff --git a/underscore.js b/underscore.js
index 6574cccfa..6c9492ace 100644
--- a/underscore.js
+++ b/underscore.js
@@ -402,10 +402,19 @@
     });
   };
 
-  // Take the difference between one array and another.
+  // Take the difference between one array and a number of other arrays.
   // Only the elements present in just the first array will remain.
-  _.difference = function(array, other) {
-    return _.filter(array, function(value){ return !_.include(other, value); });
+  _.difference = function(array) {
+    var rest = _.flatten(slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.include(rest, value); });
+  };
+
+  // Take the symmetric difference between a list of arrays. Only the elements
+  // present in one of the input arrays will remain.
+  _.symDifference = function() {
+    return _.reduce(arguments, function(memo, array) {
+      return _.union(_.difference(memo, array), _.difference(array, memo));
+    });
   };
 
   // Zip together multiple lists into a single array -- elements that share

From 3c6a8ccd73c88e0329df094d210c03620c21e8e2 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Thu, 1 Dec 2011 13:51:10 -0500
Subject: [PATCH 428/533] underscore: Fix cross-browser object enumeration
 issues. [jddalton]

---
 underscore.js | 221 +++++++++++++++++++++++++++++++++-----------------
 1 file changed, 145 insertions(+), 76 deletions(-)

diff --git a/underscore.js b/underscore.js
index 86e262343..5e1474c3e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -24,7 +24,8 @@
   var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
 
   // Create quick reference variables for speed access to core prototypes.
-  var slice            = ArrayProto.slice,
+  var concat           = ArrayProto.concat,
+      slice            = ArrayProto.slice,
       unshift          = ArrayProto.unshift,
       toString         = ObjProto.toString,
       hasOwnProperty   = ObjProto.hasOwnProperty;
@@ -72,6 +73,38 @@
   // Collection Functions
   // --------------------
 
+  // list of possible shadowed properties of Object.prototype
+  var shadowed = [
+    'constructor', 'hasOwnProperty', 'isPrototypeOf',
+    'propertyIsEnumerable', 'toLocaleString',
+    'toString', 'valueOf'
+  ];
+
+  // IE < 9 skips enumerable properties shadowing non-enumerable ones
+  var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
+    function(obj, iterator) {
+      // because IE < 9 can't set the [[Enumerable]] attribute of an existing
+      // property and the `constructor` property of a prototype defaults to
+      // non-enumerable, we manually skip the `constructor` property when we
+      // think we are iterating over a `prototype` object.
+      var ctor = obj.constructor;
+      var skipCtor = ctor && ctor.prototype && ctor.prototype.constructor == ctor;
+      for (var key, i = 0; key = shadowed[i]; i++) {
+        if (!(skipCtor && key == 'constructor') &&
+            hasOwnProperty.call(obj, key) &&
+            iterator(obj[key], key, obj) === breaker) {
+          break;
+        }
+      }
+    };
+
+  var simpleEach = function(obj, iterator, index) {
+    index || (index = 0);
+    for(var l = obj.length; index < l; index++) {
+      iterator(obj[index]);
+    }
+  };
+
   // The cornerstone, an `each` implementation, aka `forEach`.
   // Handles objects with the built-in `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
@@ -79,16 +112,42 @@
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
-    } else if (obj.length === +obj.length) {
-      for (var i = 0, l = obj.length; i < l; i++) {
-        if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
-      }
     } else {
-      for (var key in obj) {
-        if (hasOwnProperty.call(obj, key)) {
-          if (iterator.call(context, obj[key], key, obj) === breaker) return;
-        }
+      var fn = iterator;
+      var i = -1;
+      var l = obj.length;
+      if (context) {
+        iterator = function() { return fn.call(context, obj[i], i, obj); };
       }
+      if (l === l >>> 0) {
+        while (++i < l) {
+          if (i in obj && iterator(obj[i], i, obj) == breaker) return;
+        }
+      } else {
+        forProps(obj, iterator, true);
+      }
+    }
+  };
+
+  // Iterates over an object's properties, executing the `callback` for each.
+  var forProps = function(obj, iterator, ownOnly, context) {
+    var done = !obj;
+    var skipProto = typeof obj == 'function';
+
+    for (var key in obj) {
+      // Opera < 12 and Safari < 5.1 (if the prototype or a property on the prototype has been set)
+      // incorrectly set a function's `prototype` property [[Enumerable]] value
+      // to true. Because of this we standardize on skipping the the `prototype`
+      // property of functions regardless of their [[Enumerable]] value.
+      if (done =
+          !(skipProto && key == 'prototype') &&
+          (!ownOnly || ownOnly && hasOwnProperty.call(obj, key)) &&
+          iterator.call(context, obj[key], key, obj) === breaker) {
+        break;
+      }
+    }
+    if (!done && forShadowed) {
+      forShadowed(obj, iterator, context);
     }
   };
 
@@ -189,7 +248,7 @@
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
   var any = _.some = _.any = function(obj, iterator, context) {
-    iterator = iterator || _.identity;
+    iterator || (iterator = _.identity);
     var result = false;
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
@@ -228,7 +287,7 @@
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
     if (!iterator && _.isEmpty(obj)) return -Infinity;
-    var result = {computed : -Infinity};
+    var result = { computed : -Infinity };
     each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed >= result.computed && (result = {value : value, computed : computed});
@@ -240,7 +299,7 @@
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
     if (!iterator && _.isEmpty(obj)) return Infinity;
-    var result = {computed : Infinity};
+    var result = { computed : Infinity };
     each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed < result.computed && (result = {value : value, computed : computed});
@@ -267,11 +326,12 @@
   _.sortBy = function(obj, iterator, context) {
     return _.pluck(_.map(obj, function(value, index, list) {
       return {
-        value : value,
-        criteria : iterator.call(context, value, index, list)
+        value: value,
+        criteria: iterator.call(context, value, index, list)
       };
     }).sort(function(left, right) {
-      var a = left.criteria, b = right.criteria;
+      var a = left.criteria;
+      var b = right.criteria;
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };
@@ -292,7 +352,8 @@
   // be inserted so as to maintain order. Uses binary search.
   _.sortedIndex = function(array, obj, iterator) {
     iterator || (iterator = _.identity);
-    var low = 0, high = array.length;
+    var low = 0;
+    var high = array.length;
     while (low < high) {
       var mid = (low + high) >> 1;
       iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
@@ -302,10 +363,9 @@
 
   // Safely convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
-    if (!iterable)                return [];
-    if (iterable.toArray)         return iterable.toArray();
-    if (_.isArray(iterable))      return slice.call(iterable);
-    if (_.isArguments(iterable))  return slice.call(iterable);
+    if (!iterable) return [];
+    if (iterable.toArray) return iterable.toArray();
+    if (_.isArray(iterable) || _.isArguments(iterable)) return slice.call(iterable);
     return _.values(iterable);
   };
 
@@ -420,10 +480,9 @@
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
   _.zip = function() {
-    var args = slice.call(arguments);
-    var length = _.max(_.pluck(args, 'length'));
+    var length = _.max(_.pluck(arguments, 'length'));
     var results = new Array(length);
-    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
+    for (var i = 0; i < length; i++) results[i] = _.pluck(arguments, i);
     return results;
   };
 
@@ -472,7 +531,6 @@
       range[idx++] = start;
       start += step;
     }
-
     return range;
   };
 
@@ -492,10 +550,10 @@
     if (!_.isFunction(func)) throw new TypeError;
     args = slice.call(arguments, 2);
     return bound = function() {
-      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+      if (!(this instanceof bound)) return func.apply(context, concat.apply(args, arguments));
       ctor.prototype = func.prototype;
       var self = new ctor;
-      var result = func.apply(self, args.concat(slice.call(arguments)));
+      var result = func.apply(self, concat.apply(args, arguments));
       if (Object(result) === result) return result;
       return self;
     };
@@ -504,16 +562,20 @@
   // Bind all of an object's methods to that object. Useful for ensuring that
   // all callbacks defined on an object belong to it.
   _.bindAll = function(obj) {
-    var funcs = slice.call(arguments, 1);
-    if (funcs.length == 0) funcs = _.functions(obj);
-    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    var i = 1;
+    var funcs = arguments;
+    if (funcs.length < 2) {
+      i = 0;
+      funcs = _.functions(obj);
+    }
+    simpleEach(funcs, function(f) { obj[f] = _.bind(obj[f], obj); }, i);
     return obj;
   };
 
   // Memoize an expensive function by storing its results.
   _.memoize = function(func, hasher) {
-    var memo = {};
     hasher || (hasher = _.identity);
+    var memo = {};
     return function() {
       var key = hasher.apply(this, arguments);
       return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
@@ -588,7 +650,7 @@
   // conditionally execute the original function.
   _.wrap = function(func, wrapper) {
     return function() {
-      var args = [func].concat(slice.call(arguments));
+      var args = concat.apply([func], arguments);
       return wrapper.apply(this, args);
     };
   };
@@ -596,9 +658,9 @@
   // Returns a function that is the composition of a list of functions, each
   // consuming the return value of the function that follows.
   _.compose = function() {
-    var funcs = slice.call(arguments);
+    var funcs = arguments;
     return function() {
-      var args = slice.call(arguments);
+      var args = arguments;
       for (var i = funcs.length - 1; i >= 0; i--) {
         args = [funcs[i].apply(this, args)];
       }
@@ -622,7 +684,9 @@
   _.keys = nativeKeys || function(obj) {
     if (obj !== Object(obj)) throw new TypeError('Invalid object');
     var keys = [];
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
+    forProps(obj, function(value, key) {
+      keys[keys.length] = key;
+    }, true);
     return keys;
   };
 
@@ -635,29 +699,29 @@
   // Aliased as `methods`
   _.functions = _.methods = function(obj) {
     var names = [];
-    for (var key in obj) {
-      if (_.isFunction(obj[key])) names.push(key);
-    }
+    forProps(obj, function(value, key) {
+      if (_.isFunction(value)) names[names.length] = key;
+    });
     return names.sort();
   };
 
   // Extend a given object with all the properties in passed-in object(s).
   _.extend = function(obj) {
-    each(slice.call(arguments, 1), function(source) {
-      for (var prop in source) {
-        if (source[prop] !== void 0) obj[prop] = source[prop];
-      }
-    });
+    simpleEach(arguments, function(source) {
+      forProps(source, function(value, key) {
+        if (value !== void 0) obj[key] = value;
+      });
+    }, 1);
     return obj;
   };
 
   // Fill in a given object with default properties.
   _.defaults = function(obj) {
-    each(slice.call(arguments, 1), function(source) {
-      for (var prop in source) {
-        if (obj[prop] == null) obj[prop] = source[prop];
-      }
-    });
+    simpleEach(arguments, function(source) {
+      forProps(source, function(value, key) {
+        if (obj[key] == null) obj[key] = value;
+      });
+    }, 1);
     return obj;
   };
 
@@ -686,8 +750,8 @@
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
-    if (_.isFunction(a.isEqual)) return a.isEqual(b);
-    if (_.isFunction(b.isEqual)) return b.isEqual(a);
+    if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
+    if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
     // Compare `[[Class]]` names.
     var className = toString.call(a);
     if (className != toString.call(b)) return false;
@@ -696,13 +760,11 @@
       case '[object String]':
         // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
         // equivalent to `new String("5")`.
-        return String(a) == String(b);
+        return a == String(b);
       case '[object Number]':
-        a = +a;
-        b = +b;
         // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
         // other numeric values.
-        return a != a ? b != b : (a == 0 ? 1 / a == 1 / b : a == b);
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
       case '[object Date]':
       case '[object Boolean]':
         // Coerce dates and booleans to numeric primitive values. Dates are compared by their
@@ -742,21 +804,19 @@
       }
     } else {
       // Objects with different constructors are not equivalent.
-      if ("constructor" in a != "constructor" in b || a.constructor != b.constructor) return false;
+      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
       // Deep compare objects.
-      for (var key in a) {
-        if (hasOwnProperty.call(a, key)) {
-          // Count the expected number of properties.
-          size++;
-          // Deep compare each member.
-          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
-        }
-      }
+      forProps(a, function(value, key) {
+        // Count the expected number of properties.
+        size++;
+        // Deep compare each member.
+        if (!(result = hasOwnProperty.call(b, key) && eq(value, b[key], stack))) return breaker;
+      }, true);
       // Ensure that both objects contain the same number of properties.
       if (result) {
-        for (key in b) {
-          if (hasOwnProperty.call(b, key) && !(size--)) break;
-        }
+        forProps(b, function() {
+          return !(size--) && breaker;
+        }, true);
         result = !size;
       }
     }
@@ -773,9 +833,15 @@
   // Is a given array, string, or object empty?
   // An "empty" object has no enumerable own-properties.
   _.isEmpty = function(obj) {
-    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
-    return true;
+    var result = toString.call(obj);
+    if (result == '[object Array]' || result == '[object String]') {
+      return !obj.length;
+    }
+    forProps(obj, function() {
+      result = false;
+      return breaker;
+    }, true);
+    return !!result;
   };
 
   // Is a given value a DOM element?
@@ -795,11 +861,11 @@
   };
 
   // Is a given variable an arguments object?
-  if (toString.call(arguments) == '[object Arguments]') {
-    _.isArguments = function(obj) {
-      return toString.call(obj) == '[object Arguments]';
-    };
-  } else {
+  _.isArguments = function(obj) {
+    return toString.call(obj) == '[object Arguments]';
+  };
+
+  if (!_.isArguments(arguments)) {
     _.isArguments = function(obj) {
       return !!(obj && hasOwnProperty.call(obj, 'callee'));
     };
@@ -879,7 +945,7 @@
   // Add your own custom functions to the Underscore object, ensuring that
   // they're correctly added to the OOP wrapper as well.
   _.mixin = function(obj) {
-    each(_.functions(obj), function(name){
+    simpleEach(_.functions(obj), function(name){
       addToWrapper(name, _[name] = obj[name]);
     });
   };
@@ -949,6 +1015,9 @@
   // A method to easily add functions to the OOP wrapper.
   var addToWrapper = function(name, func) {
     wrapper.prototype[name] = function() {
+      // avoid applying unshift generically to the arguments object because
+      // Opera < 9.50 will pave the value at index 0 without incrimenting the
+      // other index/values
       var args = slice.call(arguments);
       unshift.call(args, this._wrapped);
       return result(func.apply(_, args), this._chain);
@@ -959,7 +1028,7 @@
   _.mixin(_);
 
   // Add all mutator Array functions to the wrapper.
-  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+  simpleEach(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
     var method = ArrayProto[name];
     wrapper.prototype[name] = function() {
       method.apply(this._wrapped, arguments);
@@ -968,7 +1037,7 @@
   });
 
   // Add all accessor Array functions to the wrapper.
-  each(['concat', 'join', 'slice'], function(name) {
+  simpleEach(['concat', 'join', 'slice'], function(name) {
     var method = ArrayProto[name];
     wrapper.prototype[name] = function() {
       return result(method.apply(this._wrapped, arguments), this._chain);

From ed4826ca19bafb2b9ec6aba3f34ec7edafc05d40 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 2 Dec 2011 18:35:45 -0500
Subject: [PATCH 429/533] merging in @jdalton's #385

---
 underscore.js | 76 +++++++++++++++++++++++++--------------------------
 1 file changed, 37 insertions(+), 39 deletions(-)

diff --git a/underscore.js b/underscore.js
index 5e1474c3e..e535966b3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -73,38 +73,6 @@
   // Collection Functions
   // --------------------
 
-  // list of possible shadowed properties of Object.prototype
-  var shadowed = [
-    'constructor', 'hasOwnProperty', 'isPrototypeOf',
-    'propertyIsEnumerable', 'toLocaleString',
-    'toString', 'valueOf'
-  ];
-
-  // IE < 9 skips enumerable properties shadowing non-enumerable ones
-  var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
-    function(obj, iterator) {
-      // because IE < 9 can't set the [[Enumerable]] attribute of an existing
-      // property and the `constructor` property of a prototype defaults to
-      // non-enumerable, we manually skip the `constructor` property when we
-      // think we are iterating over a `prototype` object.
-      var ctor = obj.constructor;
-      var skipCtor = ctor && ctor.prototype && ctor.prototype.constructor == ctor;
-      for (var key, i = 0; key = shadowed[i]; i++) {
-        if (!(skipCtor && key == 'constructor') &&
-            hasOwnProperty.call(obj, key) &&
-            iterator(obj[key], key, obj) === breaker) {
-          break;
-        }
-      }
-    };
-
-  var simpleEach = function(obj, iterator, index) {
-    index || (index = 0);
-    for(var l = obj.length; index < l; index++) {
-      iterator(obj[index]);
-    }
-  };
-
   // The cornerstone, an `each` implementation, aka `forEach`.
   // Handles objects with the built-in `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
@@ -119,6 +87,7 @@
       if (context) {
         iterator = function() { return fn.call(context, obj[i], i, obj); };
       }
+      // If we're dealing with an array or array-like object...
       if (l === l >>> 0) {
         while (++i < l) {
           if (i in obj && iterator(obj[i], i, obj) == breaker) return;
@@ -129,6 +98,38 @@
     }
   };
 
+  // A simple each, for when we know we're dealing with an array.
+  var simpleEach = function(obj, iterator, index) {
+    index || (index = 0);
+    for (var l = obj.length; index < l; index++) {
+      iterator(obj[index]);
+    }
+  };
+
+  // List of possible shadowed properties on Object.prototype.
+  var shadowed = [
+    'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
+    'toLocaleString', 'toString', 'valueOf'
+  ];
+
+  // IE < 9 skips enumerable properties shadowing non-enumerable ones.
+  var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
+    function(obj, iterator) {
+      // because IE < 9 can't set the `[[Enumerable]]` attribute of an existing
+      // property and the `constructor` property of a prototype defaults to
+      // non-enumerable, we manually skip the `constructor` property when we
+      // think we are iterating over a `prototype` object.
+      var ctor = obj.constructor;
+      var skipCtor = ctor && ctor.prototype && ctor.prototype.constructor == ctor;
+      for (var key, i = 0; key = shadowed[i]; i++) {
+        if (!(skipCtor && key == 'constructor') &&
+            hasOwnProperty.call(obj, key) &&
+            iterator(obj[key], key, obj) === breaker) {
+          break;
+        }
+      }
+    };
+
   // Iterates over an object's properties, executing the `callback` for each.
   var forProps = function(obj, iterator, ownOnly, context) {
     var done = !obj;
@@ -287,7 +288,7 @@
   _.max = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
     if (!iterator && _.isEmpty(obj)) return -Infinity;
-    var result = { computed : -Infinity };
+    var result = {computed : -Infinity};
     each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed >= result.computed && (result = {value : value, computed : computed});
@@ -299,7 +300,7 @@
   _.min = function(obj, iterator, context) {
     if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
     if (!iterator && _.isEmpty(obj)) return Infinity;
-    var result = { computed : Infinity };
+    var result = {computed : Infinity};
     each(obj, function(value, index, list) {
       var computed = iterator ? iterator.call(context, value, index, list) : value;
       computed < result.computed && (result = {value : value, computed : computed});
@@ -326,8 +327,8 @@
   _.sortBy = function(obj, iterator, context) {
     return _.pluck(_.map(obj, function(value, index, list) {
       return {
-        value: value,
-        criteria: iterator.call(context, value, index, list)
+        value : value,
+        criteria : iterator.call(context, value, index, list)
       };
     }).sort(function(left, right) {
       var a = left.criteria;
@@ -1015,9 +1016,6 @@
   // A method to easily add functions to the OOP wrapper.
   var addToWrapper = function(name, func) {
     wrapper.prototype[name] = function() {
-      // avoid applying unshift generically to the arguments object because
-      // Opera < 9.50 will pave the value at index 0 without incrimenting the
-      // other index/values
       var args = slice.call(arguments);
       unshift.call(args, this._wrapped);
       return result(func.apply(_, args), this._chain);

From 4a5c2ac818ed856813a7e7633f203cf186b942af Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Sat, 3 Dec 2011 02:49:07 -0500
Subject: [PATCH 430/533] underscore: Add unit tests and cleanup code for
 for-in issues. [jddalton]

---
 test/arrays.js      | 12 ++++++--
 test/collections.js |  6 ++--
 test/objects.js     | 73 ++++++++++++++++++++++++++++++++++++++++-----
 underscore.js       | 24 ++++++++-------
 4 files changed, 91 insertions(+), 24 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 1c910355f..7e2c7328b 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -127,9 +127,12 @@ $(document).ready(function() {
   });
 
   test("arrays: indexOf", function() {
-    var numbers = [1, 2, 3];
+    var numbers = [1];
+    numbers[2] = 3;
     numbers.indexOf = null;
-    equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
+    equals(_.indexOf(numbers, 3), 2, 'can compute indexOf, even without the native function');
+    equals(_.indexOf(numbers, void 0), -1, 'handles sparse arrays correctly');
+
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
     equals(result, 1, 'works on an arguments object');
     equals(_.indexOf(null, 2), -1, 'handles nulls properly');
@@ -148,10 +151,13 @@ $(document).ready(function() {
   });
 
   test("arrays: lastIndexOf", function() {
-    var numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0];
+    var numbers = [1, 0, 1, 0, 0, 1, 0];
+    numbers[8] = 0;
     numbers.lastIndexOf = null;
     equals(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function');
     equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
+    equals(_.lastIndexOf(numbers, void 0), -1, 'handles sparse arrays correctly');
+
     var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
     equals(result, 5, 'works on an arguments object');
     equals(_.indexOf(null, 2), -1, 'handles nulls properly');
diff --git a/test/collections.js b/test/collections.js
index 1726629eb..b05bed8b6 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -16,11 +16,11 @@ $(document).ready(function() {
     equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
 
     answers = [];
-    var obj = {one : 1, two : 2, three : 3};
+    var obj = {one: 1, two: 2, three: 3, toString: 1};
     obj.constructor.prototype.four = 4;
     _.each(obj, function(value, key){ answers.push(key); });
-    equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
+    equals(answers.sort().join(', '), 'one, three, toString, two', 'iterating over objects works, and ignores the object prototype.');
 
     answer = null;
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
@@ -233,7 +233,7 @@ $(document).ready(function() {
     equals(_.toArray(a).join(', '), '1, 2, 3', 'cloned array contains same elements');
 
     var numbers = _.toArray({one : 1, two : 2, three : 3});
-    equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
+    equals(numbers.sort().join(', '), '1, 2, 3', 'object flattened into array');
   });
 
   test('collections: size', function() {
diff --git a/test/objects.js b/test/objects.js
index 6d432033a..42bea76a8 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -4,8 +4,30 @@ $(document).ready(function() {
 
   test("objects: keys", function() {
     var exception = /object/;
-    equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
-    // the test above is not safe because it relies on for-in enumeration order
+    equals(
+      _.keys({one: 1, two: 2}).sort().join(', '),
+      'one, two',
+      'can extract the keys from an object'
+    );
+
+    equals(
+      _.keys({
+        constructor: 'a',
+        hasOwnProperty: 'b',
+        isPrototypeOf: 'c',
+        propertyIsEnumerable: 'd',
+        toLocaleString: 'e',
+        toString: 'f',
+        valueOf: 'g'
+      }).sort().join(', '),
+      'constructor, hasOwnProperty, isPrototypeOf, propertyIsEnumerable, toLocaleString, toString, valueOf',
+      'keys of shadowing properties'
+    );
+
+    var fn = function(){};
+    fn.x = fn.y = fn.z = fn.prototype.a = 1;
+    equals(_.keys(fn).sort().join(', '), 'x, y, z', 'keys of functions works, and ignores the prototype property');
+
     var a = []; a[1] = 0;
     equals(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
     raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
@@ -16,7 +38,7 @@ $(document).ready(function() {
   });
 
   test("objects: values", function() {
-    equals(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
+    equals(_.values({one : 1, two : 2}).sort().join(', '), '1, 2', 'can extract the values from an object');
   });
 
   test("objects: functions", function() {
@@ -30,20 +52,38 @@ $(document).ready(function() {
 
   test("objects: extend", function() {
     var result;
+    var expected = {
+      constructor: 'a',
+      hasOwnProperty: 'b',
+      isPrototypeOf: 'c',
+      propertyIsEnumerable: 'd',
+      toLocaleString: 'e',
+      toString: 'f',
+      valueOf: 'g'
+    };
+
     equals(_.extend({}, {a:'b'}).a, 'b', 'can extend an object with the attributes of another');
     equals(_.extend({a:'x'}, {a:'b'}).a, 'b', 'properties in source override destination');
     equals(_.extend({x:'x'}, {a:'b'}).x, 'x', 'properties not in source dont get overriden');
+
+    result = _.extend({}, expected);
+    ok(_.isEqual(result, expected), 'extend with shadow properties');
+
     result = _.extend({x:'x'}, {a:'a'}, {b:'b'});
     ok(_.isEqual(result, {x:'x', a:'a', b:'b'}), 'can extend from multiple source objects');
+
     result = _.extend({x:'x'}, {a:'a', x:2}, {a:'b'});
     ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
+
     result = _.extend({}, {a: void 0, b: null});
     equals(_.keys(result).join(''), 'b', 'extend does not copy undefined values');
   });
 
   test("objects: defaults", function() {
     var result;
-    var options = {zero: 0, one: 1, empty: "", nan: NaN, string: "string"};
+    var Options = function() { this.empty = ''; this.string = 'string'; this.zero = 0; };
+    _.extend(Options.prototype, {nan: NaN, one:1});
+    var options = new Options;
 
     _.defaults(options, {zero: 1, one: 10, twenty: 20});
     equals(options.zero, 0, 'value exists');
@@ -57,9 +97,14 @@ $(document).ready(function() {
   });
 
   test("objects: clone", function() {
-    var moe = {name : 'moe', lucky : [13, 27, 34]};
+    var toString = function() { return this.name; };
+    var valueOf = function() { return this.name; };
+    var moe = {name : 'moe', lucky : [13, 27, 34], toString: toString, valueOf: valueOf};
+
     var clone = _.clone(moe);
     equals(clone.name, 'moe', 'the clone as the attributes of the original');
+    equals(clone.toString, toString, 'cloned own toString method');
+    equals(clone.valueOf, valueOf, 'cloned own valueOf method');
 
     clone.name = 'curly';
     ok(clone.name == 'curly' && moe.name == 'moe', 'clones can change shallow attributes without affecting the original');
@@ -82,6 +127,16 @@ $(document).ready(function() {
     }
     Second.prototype.value = 2;
 
+    var obj = {
+      constructor: 'a',
+      hasOwnProperty: 'b',
+      isPrototypeOf: 'c',
+      propertyIsEnumerable: 'd',
+      toLocaleString: 'e',
+      toString: 'f',
+      valueOf: 'g'
+    };
+
     // Basic equality and identity comparisons.
     ok(_.isEqual(null, null), "`null` is equal to `null`");
     ok(_.isEqual(), "`undefined` is equal to `undefined`");
@@ -208,6 +263,10 @@ $(document).ready(function() {
     ok(!_.isEqual({a: 1}, {a: 1, b: 2}), "Commutative equality is implemented for objects");
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), "Objects with identical keys and different values are not equivalent");
 
+    // Objects with shadowing properties
+    ok(!_.isEqual({}, {toString: 1}), "Object with custom toString is not equal to {}");
+    ok(_.isEqual({toString: 1, valueOf: 2}, {toString: 1, valueOf: 2}), "Objects with equivalent shadow properties");
+
     // `A` contains nested objects and arrays.
     a = {
       name: new String("Moe Howard"),
@@ -358,7 +417,7 @@ $(document).ready(function() {
   test("objects: isEmpty", function() {
     ok(!_([1]).isEmpty(), '[1] is not empty');
     ok(_.isEmpty([]), '[] is empty');
-    ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
+    ok(!_.isEmpty({valueOf: 1}), '{valueOf: 1} is not empty');
     ok(_.isEmpty({}), '{} is empty');
     ok(_.isEmpty(new RegExp('')), 'objects with prototype properties are empty');
     ok(_.isEmpty(null), 'null is empty');
@@ -388,7 +447,7 @@ $(document).ready(function() {
       parent.iNaN       = NaN;\
       parent.iNull      = null;\
       parent.iBoolean   = new Boolean(false);\
-      parent.iUndefined = undefined;\
+      parent.iUndefined = void 0;\
     </script>"
   );
   iDoc.close();
diff --git a/underscore.js b/underscore.js
index e535966b3..ef515d167 100644
--- a/underscore.js
+++ b/underscore.js
@@ -84,6 +84,8 @@
       var fn = iterator;
       var i = -1;
       var l = obj.length;
+
+      // We optimized for common use by only binding a context when it's passed
       if (context) {
         iterator = function() { return fn.call(context, obj[i], i, obj); };
       }
@@ -98,7 +100,7 @@
     }
   };
 
-  // A simple each, for when we know we're dealing with an array.
+  // A simple each, for dealing with non-sparse arrays and arguments objects
   var simpleEach = function(obj, iterator, index) {
     index || (index = 0);
     for (var l = obj.length; index < l; index++) {
@@ -112,15 +114,15 @@
     'toLocaleString', 'toString', 'valueOf'
   ];
 
-  // IE < 9 skips enumerable properties shadowing non-enumerable ones.
+  // IE < 9 makes properties, shadowing non-enumerable ones, non-enumerable too
   var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
     function(obj, iterator) {
-      // because IE < 9 can't set the `[[Enumerable]]` attribute of an existing
+      // Because IE < 9 can't set the `[[Enumerable]]` attribute of an existing
       // property and the `constructor` property of a prototype defaults to
       // non-enumerable, we manually skip the `constructor` property when we
       // think we are iterating over a `prototype` object.
       var ctor = obj.constructor;
-      var skipCtor = ctor && ctor.prototype && ctor.prototype.constructor == ctor;
+      var skipCtor = ctor && ctor.prototype && ctor.prototype.constructor === ctor;
       for (var key, i = 0; key = shadowed[i]; i++) {
         if (!(skipCtor && key == 'constructor') &&
             hasOwnProperty.call(obj, key) &&
@@ -131,24 +133,25 @@
     };
 
   // Iterates over an object's properties, executing the `callback` for each.
-  var forProps = function(obj, iterator, ownOnly, context) {
+  var forProps = function(obj, iterator, ownOnly) {
     var done = !obj;
     var skipProto = typeof obj == 'function';
 
     for (var key in obj) {
-      // Opera < 12 and Safari < 5.1 (if the prototype or a property on the prototype has been set)
+      // Firefox < 3.6, Opera > 9.50 - Opera < 12, and Safari < 5.1
+      // (if the prototype or a property on the prototype has been set)
       // incorrectly set a function's `prototype` property [[Enumerable]] value
       // to true. Because of this we standardize on skipping the the `prototype`
       // property of functions regardless of their [[Enumerable]] value.
       if (done =
           !(skipProto && key == 'prototype') &&
           (!ownOnly || ownOnly && hasOwnProperty.call(obj, key)) &&
-          iterator.call(context, obj[key], key, obj) === breaker) {
+          iterator(obj[key], key, obj) === breaker) {
         break;
       }
     }
     if (!done && forShadowed) {
-      forShadowed(obj, iterator, context);
+      forShadowed(obj, iterator);
     }
   };
 
@@ -1016,9 +1019,8 @@
   // A method to easily add functions to the OOP wrapper.
   var addToWrapper = function(name, func) {
     wrapper.prototype[name] = function() {
-      var args = slice.call(arguments);
-      unshift.call(args, this._wrapped);
-      return result(func.apply(_, args), this._chain);
+      unshift.call(arguments, this._wrapped);
+      return result(func.apply(_, arguments), this._chain);
     };
   };
 

From 649f629bb172f73f771b4716ef9a469199a5d531 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Sat, 3 Dec 2011 22:06:54 -0500
Subject: [PATCH 431/533] underscore: Allow _.reduce and _.reduceRight to have
 an explicitly undefined value. [jddalton]

---
 test/collections.js | 25 +++++++++++++++----------
 test/objects.js     | 13 ++++++-------
 underscore.js       | 12 +++++++-----
 3 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 1726629eb..857ae3731 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -1,4 +1,4 @@
-$(document).ready(function() {
+$(document).ready(function($, undefined) {
 
   module("Collections");
 
@@ -8,7 +8,7 @@ $(document).ready(function() {
     });
 
     var answers = [];
-    _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
+    _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier); }, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
 
     answers = [];
@@ -75,15 +75,14 @@ $(document).ready(function() {
       ifnull = ex;
     }
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
-
     ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+    equals(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+    raises(function() { _.reduce([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
-    // Sparse arrays:
-    var sparseArray  = [];
-    sparseArray[100] = 10;
-    sparseArray[200] = 20;
-
-    equals(_.reduce(sparseArray, function(a, b){ return a + b }), 30, 'initially-sparse arrays with no memo');
+    var sparseArray = [];
+    sparseArray[0] = 20;
+    sparseArray[2] = -5;
+    equals(_.reduce(sparseArray, function(a, b){ return a - b }), 25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: reduceRight', function() {
@@ -103,8 +102,14 @@ $(document).ready(function() {
       ifnull = ex;
     }
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
-
     ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+    equals(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+    raises(function() { _.reduceRight([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
+
+    var sparseArray = [];
+    sparseArray[0] = 20;
+    sparseArray[2] = -5;
+    equals(_.reduceRight(sparseArray, function(a, b){ return a - b }), -25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: detect', function() {
diff --git a/test/objects.js b/test/objects.js
index 6d432033a..fbcc02a39 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -1,18 +1,17 @@
-$(document).ready(function() {
+$(document).ready(function($, undefined) {
 
   module("Objects");
 
   test("objects: keys", function() {
-    var exception = /object/;
     equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
     // the test above is not safe because it relies on for-in enumeration order
     var a = []; a[1] = 0;
     equals(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
-    raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
-    raises(function() { _.keys(void 0); }, exception, 'throws an error for `undefined` values');
-    raises(function() { _.keys(1); }, exception, 'throws an error for number primitives');
-    raises(function() { _.keys('a'); }, exception, 'throws an error for string primitives');
-    raises(function() { _.keys(true); }, exception, 'throws an error for boolean primitives');
+    raises(function() { _.keys(null); }, TypeError, 'throws an error for `null` values');
+    raises(function() { _.keys(void 0); }, TypeError, 'throws an error for `undefined` values');
+    raises(function() { _.keys(1); }, TypeError, 'throws an error for number primitives');
+    raises(function() { _.keys('a'); }, TypeError, 'throws an error for string primitives');
+    raises(function() { _.keys(true); }, TypeError, 'throws an error for boolean primitives');
   });
 
   test("objects: values", function() {
diff --git a/underscore.js b/underscore.js
index e535966b3..19f374db9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -167,7 +167,7 @@
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
-    var initial = memo !== void 0;
+    var initial = arguments.length > 2;
     if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
@@ -181,20 +181,22 @@
         memo = iterator.call(context, memo, value, index, list);
       }
     });
-    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
+    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
     return memo;
   };
 
   // The right-associative version of reduce, also known as `foldr`.
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
     if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
-      return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
     }
-    var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
-    return _.reduce(reversed, iterator, memo, context);
+    var reversed = _.toArray(obj).reverse();
+    if (context && !initial) iterator = _.bind(iterator, context);
+    return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
   };
 
   // Return the first value which passes a truth test. Aliased as `detect`.

From 3df51e7004de9de948421ed4f253f13f98f4fb86 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 5 Dec 2011 11:45:03 -0500
Subject: [PATCH 432/533] fixing typo.

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index e535966b3..721722962 100644
--- a/underscore.js
+++ b/underscore.js
@@ -385,7 +385,7 @@
     return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
   };
 
-  // Returns everything but the last entry of the array. Especcialy useful on
+  // Returns everything but the last entry of the array. Especially useful on
   // the arguments object. Passing **n** will return all the values in
   // the array, excluding the last N. The **guard** check allows it to work with
   // `_.map`.

From 2c5661ebb30461d7a004372318617ded7a332ae7 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Tue, 6 Dec 2011 01:16:56 -0500
Subject: [PATCH 433/533] underscore: Avoid regression and cleanup comments.
 [jddalton]

---
 test/objects.js |  2 +-
 underscore.js   | 13 +++++++------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 5edea3710..73c56376d 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -262,7 +262,7 @@ $(document).ready(function($, undefined) {
     ok(!_.isEqual({a: 1}, {a: 1, b: 2}), "Commutative equality is implemented for objects");
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), "Objects with identical keys and different values are not equivalent");
 
-    // Objects with shadowing properties
+    // Objects with properties that shadow non-enumerable ones.
     ok(!_.isEqual({}, {toString: 1}), "Object with custom toString is not equal to {}");
     ok(_.isEqual({toString: 1, valueOf: 2}, {toString: 1, valueOf: 2}), "Objects with equivalent shadow properties");
 
diff --git a/underscore.js b/underscore.js
index c6587c99b..34fd319d5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -25,8 +25,8 @@
 
   // Create quick reference variables for speed access to core prototypes.
   var concat           = ArrayProto.concat,
+      push             = ArrayProto.push,
       slice            = ArrayProto.slice,
-      unshift          = ArrayProto.unshift,
       toString         = ObjProto.toString,
       hasOwnProperty   = ObjProto.hasOwnProperty;
 
@@ -85,7 +85,7 @@
       var i = -1;
       var l = obj.length;
 
-      // We optimized for common use by only binding a context when it's passed
+      // We optimize for common use by only binding a context when it's passed.
       if (context) {
         iterator = function() { return fn.call(context, obj[i], i, obj); };
       }
@@ -100,7 +100,7 @@
     }
   };
 
-  // A simple each, for dealing with non-sparse arrays and arguments objects
+  // A simple each, for dealing with non-sparse arrays and arguments objects.
   var simpleEach = function(obj, iterator, index) {
     index || (index = 0);
     for (var l = obj.length; index < l; index++) {
@@ -114,7 +114,7 @@
     'toLocaleString', 'toString', 'valueOf'
   ];
 
-  // IE < 9 makes properties, shadowing non-enumerable ones, non-enumerable too
+  // IE < 9 makes properties, shadowing non-enumerable ones, non-enumerable too.
   var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
     function(obj, iterator) {
       // Because IE < 9 can't set the `[[Enumerable]]` attribute of an existing
@@ -1021,8 +1021,9 @@
   // A method to easily add functions to the OOP wrapper.
   var addToWrapper = function(name, func) {
     wrapper.prototype[name] = function() {
-      unshift.call(arguments, this._wrapped);
-      return result(func.apply(_, arguments), this._chain);
+      var args = [this._wrapped];
+      push.apply(args, arguments);
+      return result(func.apply(_, args), this._chain);
     };
   };
 

From b3290c127afa939b70075735fdf714c0abb2be1c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 6 Dec 2011 14:08:47 -0500
Subject: [PATCH 434/533] style tweaks.

---
 underscore.js | 62 +++++++++++++++++++++++++--------------------------
 1 file changed, 30 insertions(+), 32 deletions(-)

diff --git a/underscore.js b/underscore.js
index 34fd319d5..1640fecf8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -21,7 +21,9 @@
   var breaker = {};
 
   // Save bytes in the minified (but not gzipped) version:
-  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+  var ArrayProto = Array.prototype,
+      ObjProto = Object.prototype,
+      FuncProto = Function.prototype;
 
   // Create quick reference variables for speed access to core prototypes.
   var concat           = ArrayProto.concat,
@@ -46,6 +48,12 @@
     nativeKeys         = Object.keys,
     nativeBind         = FuncProto.bind;
 
+  // List of possible shadowed properties on Object.prototype.
+  var shadowed = [
+    'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
+    'toLocaleString', 'toString', 'valueOf'
+  ];
+
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
@@ -57,13 +65,11 @@
       exports = module.exports = _;
     }
     exports._ = _;
+  // Register as a named module with AMD.
   } else if (typeof define === 'function' && define.amd) {
-    // Register as a named module with AMD.
-    define('underscore', function() {
-      return _;
-    });
+    define('underscore', function() { return _; });
+  // Exported as a string, for Closure Compiler "advanced" mode.
   } else {
-    // Exported as a string, for Closure Compiler "advanced" mode.
     root['_'] = _;
   }
 
@@ -79,24 +85,23 @@
   var each = _.each = _.forEach = function(obj, iterator, context) {
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
-      obj.forEach(iterator, context);
+      return obj.forEach(iterator, context);
+    }
+    var fn = iterator;
+    var i = -1;
+    var l = obj.length;
+    // We optimize for common use by only binding a context when it's passed.
+    if (context) {
+      iterator = function() { return fn.call(context, obj[i], i, obj); };
+    }
+    // If we're dealing with an array or array-like object...
+    if (l === l >>> 0) {
+      while (++i < l) {
+        if (i in obj && iterator(obj[i], i, obj) == breaker) return;
+      }
+    // Otherwise, delegate to `forProps` over an object's keys and values.
     } else {
-      var fn = iterator;
-      var i = -1;
-      var l = obj.length;
-
-      // We optimize for common use by only binding a context when it's passed.
-      if (context) {
-        iterator = function() { return fn.call(context, obj[i], i, obj); };
-      }
-      // If we're dealing with an array or array-like object...
-      if (l === l >>> 0) {
-        while (++i < l) {
-          if (i in obj && iterator(obj[i], i, obj) == breaker) return;
-        }
-      } else {
-        forProps(obj, iterator, true);
-      }
+      forProps(obj, iterator, true);
     }
   };
 
@@ -108,12 +113,6 @@
     }
   };
 
-  // List of possible shadowed properties on Object.prototype.
-  var shadowed = [
-    'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
-    'toLocaleString', 'toString', 'valueOf'
-  ];
-
   // IE < 9 makes properties, shadowing non-enumerable ones, non-enumerable too.
   var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
     function(obj, iterator) {
@@ -136,13 +135,12 @@
   var forProps = function(obj, iterator, ownOnly) {
     var done = !obj;
     var skipProto = typeof obj == 'function';
-
     for (var key in obj) {
       // Firefox < 3.6, Opera > 9.50 - Opera < 12, and Safari < 5.1
       // (if the prototype or a property on the prototype has been set)
-      // incorrectly set a function's `prototype` property [[Enumerable]] value
+      // incorrectly set a function's `prototype` property `[[Enumerable]]` value
       // to true. Because of this we standardize on skipping the the `prototype`
-      // property of functions regardless of their [[Enumerable]] value.
+      // property of functions regardless of their `[[Enumerable]]` value.
       if (done =
           !(skipProto && key == 'prototype') &&
           (!ownOnly || ownOnly && hasOwnProperty.call(obj, key)) &&

From 9e4192729375c8eab68913d36de9fbb8ffbbdfcc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 6 Dec 2011 17:33:43 -0500
Subject: [PATCH 435/533] rolling back to the previous implementation of 'each'
 ... cancels out #385

---
 test/arrays.js      |  12 +--
 test/collections.js |  33 +++---
 test/objects.js     |  86 +++-------------
 underscore.js       | 242 ++++++++++++++++----------------------------
 4 files changed, 117 insertions(+), 256 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 7e2c7328b..1c910355f 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -127,12 +127,9 @@ $(document).ready(function() {
   });
 
   test("arrays: indexOf", function() {
-    var numbers = [1];
-    numbers[2] = 3;
+    var numbers = [1, 2, 3];
     numbers.indexOf = null;
-    equals(_.indexOf(numbers, 3), 2, 'can compute indexOf, even without the native function');
-    equals(_.indexOf(numbers, void 0), -1, 'handles sparse arrays correctly');
-
+    equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
     equals(result, 1, 'works on an arguments object');
     equals(_.indexOf(null, 2), -1, 'handles nulls properly');
@@ -151,13 +148,10 @@ $(document).ready(function() {
   });
 
   test("arrays: lastIndexOf", function() {
-    var numbers = [1, 0, 1, 0, 0, 1, 0];
-    numbers[8] = 0;
+    var numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0];
     numbers.lastIndexOf = null;
     equals(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function');
     equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
-    equals(_.lastIndexOf(numbers, void 0), -1, 'handles sparse arrays correctly');
-
     var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
     equals(result, 5, 'works on an arguments object');
     equals(_.indexOf(null, 2), -1, 'handles nulls properly');
diff --git a/test/collections.js b/test/collections.js
index a3c2886e3..1726629eb 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -1,4 +1,4 @@
-$(document).ready(function($, undefined) {
+$(document).ready(function() {
 
   module("Collections");
 
@@ -8,7 +8,7 @@ $(document).ready(function($, undefined) {
     });
 
     var answers = [];
-    _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier); }, {multiplier : 5});
+    _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
     equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
 
     answers = [];
@@ -16,11 +16,11 @@ $(document).ready(function($, undefined) {
     equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
 
     answers = [];
-    var obj = {one: 1, two: 2, three: 3, toString: 1};
+    var obj = {one : 1, two : 2, three : 3};
     obj.constructor.prototype.four = 4;
     _.each(obj, function(value, key){ answers.push(key); });
+    equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
-    equals(answers.sort().join(', '), 'one, three, toString, two', 'iterating over objects works, and ignores the object prototype.');
 
     answer = null;
     _.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
@@ -75,14 +75,15 @@ $(document).ready(function($, undefined) {
       ifnull = ex;
     }
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
-    ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
-    equals(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
-    raises(function() { _.reduce([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
-    var sparseArray = [];
-    sparseArray[0] = 20;
-    sparseArray[2] = -5;
-    equals(_.reduce(sparseArray, function(a, b){ return a - b }), 25, 'initially-sparse arrays with no memo');
+    ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+
+    // Sparse arrays:
+    var sparseArray  = [];
+    sparseArray[100] = 10;
+    sparseArray[200] = 20;
+
+    equals(_.reduce(sparseArray, function(a, b){ return a + b }), 30, 'initially-sparse arrays with no memo');
   });
 
   test('collections: reduceRight', function() {
@@ -102,14 +103,8 @@ $(document).ready(function($, undefined) {
       ifnull = ex;
     }
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
-    ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
-    equals(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
-    raises(function() { _.reduceRight([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
-    var sparseArray = [];
-    sparseArray[0] = 20;
-    sparseArray[2] = -5;
-    equals(_.reduceRight(sparseArray, function(a, b){ return a - b }), -25, 'initially-sparse arrays with no memo');
+    ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
   });
 
   test('collections: detect', function() {
@@ -238,7 +233,7 @@ $(document).ready(function($, undefined) {
     equals(_.toArray(a).join(', '), '1, 2, 3', 'cloned array contains same elements');
 
     var numbers = _.toArray({one : 1, two : 2, three : 3});
-    equals(numbers.sort().join(', '), '1, 2, 3', 'object flattened into array');
+    equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
   });
 
   test('collections: size', function() {
diff --git a/test/objects.js b/test/objects.js
index 73c56376d..6d432033a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -1,43 +1,22 @@
-$(document).ready(function($, undefined) {
+$(document).ready(function() {
 
   module("Objects");
 
   test("objects: keys", function() {
-    equals(
-      _.keys({one: 1, two: 2}).sort().join(', '),
-      'one, two',
-      'can extract the keys from an object'
-    );
-
-    equals(
-      _.keys({
-        constructor: 'a',
-        hasOwnProperty: 'b',
-        isPrototypeOf: 'c',
-        propertyIsEnumerable: 'd',
-        toLocaleString: 'e',
-        toString: 'f',
-        valueOf: 'g'
-      }).sort().join(', '),
-      'constructor, hasOwnProperty, isPrototypeOf, propertyIsEnumerable, toLocaleString, toString, valueOf',
-      'keys of shadowing properties'
-    );
-
-    var fn = function(){};
-    fn.x = fn.y = fn.z = fn.prototype.a = 1;
-    equals(_.keys(fn).sort().join(', '), 'x, y, z', 'keys of functions works, and ignores the prototype property');
-
+    var exception = /object/;
+    equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
+    // the test above is not safe because it relies on for-in enumeration order
     var a = []; a[1] = 0;
     equals(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
-    raises(function() { _.keys(null); }, TypeError, 'throws an error for `null` values');
-    raises(function() { _.keys(void 0); }, TypeError, 'throws an error for `undefined` values');
-    raises(function() { _.keys(1); }, TypeError, 'throws an error for number primitives');
-    raises(function() { _.keys('a'); }, TypeError, 'throws an error for string primitives');
-    raises(function() { _.keys(true); }, TypeError, 'throws an error for boolean primitives');
+    raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
+    raises(function() { _.keys(void 0); }, exception, 'throws an error for `undefined` values');
+    raises(function() { _.keys(1); }, exception, 'throws an error for number primitives');
+    raises(function() { _.keys('a'); }, exception, 'throws an error for string primitives');
+    raises(function() { _.keys(true); }, exception, 'throws an error for boolean primitives');
   });
 
   test("objects: values", function() {
-    equals(_.values({one : 1, two : 2}).sort().join(', '), '1, 2', 'can extract the values from an object');
+    equals(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
   });
 
   test("objects: functions", function() {
@@ -51,38 +30,20 @@ $(document).ready(function($, undefined) {
 
   test("objects: extend", function() {
     var result;
-    var expected = {
-      constructor: 'a',
-      hasOwnProperty: 'b',
-      isPrototypeOf: 'c',
-      propertyIsEnumerable: 'd',
-      toLocaleString: 'e',
-      toString: 'f',
-      valueOf: 'g'
-    };
-
     equals(_.extend({}, {a:'b'}).a, 'b', 'can extend an object with the attributes of another');
     equals(_.extend({a:'x'}, {a:'b'}).a, 'b', 'properties in source override destination');
     equals(_.extend({x:'x'}, {a:'b'}).x, 'x', 'properties not in source dont get overriden');
-
-    result = _.extend({}, expected);
-    ok(_.isEqual(result, expected), 'extend with shadow properties');
-
     result = _.extend({x:'x'}, {a:'a'}, {b:'b'});
     ok(_.isEqual(result, {x:'x', a:'a', b:'b'}), 'can extend from multiple source objects');
-
     result = _.extend({x:'x'}, {a:'a', x:2}, {a:'b'});
     ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
-
     result = _.extend({}, {a: void 0, b: null});
     equals(_.keys(result).join(''), 'b', 'extend does not copy undefined values');
   });
 
   test("objects: defaults", function() {
     var result;
-    var Options = function() { this.empty = ''; this.string = 'string'; this.zero = 0; };
-    _.extend(Options.prototype, {nan: NaN, one:1});
-    var options = new Options;
+    var options = {zero: 0, one: 1, empty: "", nan: NaN, string: "string"};
 
     _.defaults(options, {zero: 1, one: 10, twenty: 20});
     equals(options.zero, 0, 'value exists');
@@ -96,14 +57,9 @@ $(document).ready(function($, undefined) {
   });
 
   test("objects: clone", function() {
-    var toString = function() { return this.name; };
-    var valueOf = function() { return this.name; };
-    var moe = {name : 'moe', lucky : [13, 27, 34], toString: toString, valueOf: valueOf};
-
+    var moe = {name : 'moe', lucky : [13, 27, 34]};
     var clone = _.clone(moe);
     equals(clone.name, 'moe', 'the clone as the attributes of the original');
-    equals(clone.toString, toString, 'cloned own toString method');
-    equals(clone.valueOf, valueOf, 'cloned own valueOf method');
 
     clone.name = 'curly';
     ok(clone.name == 'curly' && moe.name == 'moe', 'clones can change shallow attributes without affecting the original');
@@ -126,16 +82,6 @@ $(document).ready(function($, undefined) {
     }
     Second.prototype.value = 2;
 
-    var obj = {
-      constructor: 'a',
-      hasOwnProperty: 'b',
-      isPrototypeOf: 'c',
-      propertyIsEnumerable: 'd',
-      toLocaleString: 'e',
-      toString: 'f',
-      valueOf: 'g'
-    };
-
     // Basic equality and identity comparisons.
     ok(_.isEqual(null, null), "`null` is equal to `null`");
     ok(_.isEqual(), "`undefined` is equal to `undefined`");
@@ -262,10 +208,6 @@ $(document).ready(function($, undefined) {
     ok(!_.isEqual({a: 1}, {a: 1, b: 2}), "Commutative equality is implemented for objects");
     ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), "Objects with identical keys and different values are not equivalent");
 
-    // Objects with properties that shadow non-enumerable ones.
-    ok(!_.isEqual({}, {toString: 1}), "Object with custom toString is not equal to {}");
-    ok(_.isEqual({toString: 1, valueOf: 2}, {toString: 1, valueOf: 2}), "Objects with equivalent shadow properties");
-
     // `A` contains nested objects and arrays.
     a = {
       name: new String("Moe Howard"),
@@ -416,7 +358,7 @@ $(document).ready(function($, undefined) {
   test("objects: isEmpty", function() {
     ok(!_([1]).isEmpty(), '[1] is not empty');
     ok(_.isEmpty([]), '[] is empty');
-    ok(!_.isEmpty({valueOf: 1}), '{valueOf: 1} is not empty');
+    ok(!_.isEmpty({one : 1}), '{one : 1} is not empty');
     ok(_.isEmpty({}), '{} is empty');
     ok(_.isEmpty(new RegExp('')), 'objects with prototype properties are empty');
     ok(_.isEmpty(null), 'null is empty');
@@ -446,7 +388,7 @@ $(document).ready(function($, undefined) {
       parent.iNaN       = NaN;\
       parent.iNull      = null;\
       parent.iBoolean   = new Boolean(false);\
-      parent.iUndefined = void 0;\
+      parent.iUndefined = undefined;\
     </script>"
   );
   iDoc.close();
diff --git a/underscore.js b/underscore.js
index 1640fecf8..86e262343 100644
--- a/underscore.js
+++ b/underscore.js
@@ -21,14 +21,11 @@
   var breaker = {};
 
   // Save bytes in the minified (but not gzipped) version:
-  var ArrayProto = Array.prototype,
-      ObjProto = Object.prototype,
-      FuncProto = Function.prototype;
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
 
   // Create quick reference variables for speed access to core prototypes.
-  var concat           = ArrayProto.concat,
-      push             = ArrayProto.push,
-      slice            = ArrayProto.slice,
+  var slice            = ArrayProto.slice,
+      unshift          = ArrayProto.unshift,
       toString         = ObjProto.toString,
       hasOwnProperty   = ObjProto.hasOwnProperty;
 
@@ -48,12 +45,6 @@
     nativeKeys         = Object.keys,
     nativeBind         = FuncProto.bind;
 
-  // List of possible shadowed properties on Object.prototype.
-  var shadowed = [
-    'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',
-    'toLocaleString', 'toString', 'valueOf'
-  ];
-
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
@@ -65,11 +56,13 @@
       exports = module.exports = _;
     }
     exports._ = _;
-  // Register as a named module with AMD.
   } else if (typeof define === 'function' && define.amd) {
-    define('underscore', function() { return _; });
-  // Exported as a string, for Closure Compiler "advanced" mode.
+    // Register as a named module with AMD.
+    define('underscore', function() {
+      return _;
+    });
   } else {
+    // Exported as a string, for Closure Compiler "advanced" mode.
     root['_'] = _;
   }
 
@@ -85,71 +78,17 @@
   var each = _.each = _.forEach = function(obj, iterator, context) {
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
-      return obj.forEach(iterator, context);
-    }
-    var fn = iterator;
-    var i = -1;
-    var l = obj.length;
-    // We optimize for common use by only binding a context when it's passed.
-    if (context) {
-      iterator = function() { return fn.call(context, obj[i], i, obj); };
-    }
-    // If we're dealing with an array or array-like object...
-    if (l === l >>> 0) {
-      while (++i < l) {
-        if (i in obj && iterator(obj[i], i, obj) == breaker) return;
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
       }
-    // Otherwise, delegate to `forProps` over an object's keys and values.
     } else {
-      forProps(obj, iterator, true);
-    }
-  };
-
-  // A simple each, for dealing with non-sparse arrays and arguments objects.
-  var simpleEach = function(obj, iterator, index) {
-    index || (index = 0);
-    for (var l = obj.length; index < l; index++) {
-      iterator(obj[index]);
-    }
-  };
-
-  // IE < 9 makes properties, shadowing non-enumerable ones, non-enumerable too.
-  var forShadowed = !{valueOf:0}.propertyIsEnumerable('valueOf') &&
-    function(obj, iterator) {
-      // Because IE < 9 can't set the `[[Enumerable]]` attribute of an existing
-      // property and the `constructor` property of a prototype defaults to
-      // non-enumerable, we manually skip the `constructor` property when we
-      // think we are iterating over a `prototype` object.
-      var ctor = obj.constructor;
-      var skipCtor = ctor && ctor.prototype && ctor.prototype.constructor === ctor;
-      for (var key, i = 0; key = shadowed[i]; i++) {
-        if (!(skipCtor && key == 'constructor') &&
-            hasOwnProperty.call(obj, key) &&
-            iterator(obj[key], key, obj) === breaker) {
-          break;
+      for (var key in obj) {
+        if (hasOwnProperty.call(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
         }
       }
-    };
-
-  // Iterates over an object's properties, executing the `callback` for each.
-  var forProps = function(obj, iterator, ownOnly) {
-    var done = !obj;
-    var skipProto = typeof obj == 'function';
-    for (var key in obj) {
-      // Firefox < 3.6, Opera > 9.50 - Opera < 12, and Safari < 5.1
-      // (if the prototype or a property on the prototype has been set)
-      // incorrectly set a function's `prototype` property `[[Enumerable]]` value
-      // to true. Because of this we standardize on skipping the the `prototype`
-      // property of functions regardless of their `[[Enumerable]]` value.
-      if (done =
-          !(skipProto && key == 'prototype') &&
-          (!ownOnly || ownOnly && hasOwnProperty.call(obj, key)) &&
-          iterator(obj[key], key, obj) === breaker) {
-        break;
-      }
-    }
-    if (!done && forShadowed) {
-      forShadowed(obj, iterator);
     }
   };
 
@@ -168,7 +107,7 @@
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
-    var initial = arguments.length > 2;
+    var initial = memo !== void 0;
     if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
@@ -182,22 +121,20 @@
         memo = iterator.call(context, memo, value, index, list);
       }
     });
-    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
+    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
     return memo;
   };
 
   // The right-associative version of reduce, also known as `foldr`.
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
-    var initial = arguments.length > 2;
     if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
-      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+      return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
     }
-    var reversed = _.toArray(obj).reverse();
-    if (context && !initial) iterator = _.bind(iterator, context);
-    return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
+    var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
+    return _.reduce(reversed, iterator, memo, context);
   };
 
   // Return the first value which passes a truth test. Aliased as `detect`.
@@ -252,7 +189,7 @@
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
   var any = _.some = _.any = function(obj, iterator, context) {
-    iterator || (iterator = _.identity);
+    iterator = iterator || _.identity;
     var result = false;
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
@@ -334,8 +271,7 @@
         criteria : iterator.call(context, value, index, list)
       };
     }).sort(function(left, right) {
-      var a = left.criteria;
-      var b = right.criteria;
+      var a = left.criteria, b = right.criteria;
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };
@@ -356,8 +292,7 @@
   // be inserted so as to maintain order. Uses binary search.
   _.sortedIndex = function(array, obj, iterator) {
     iterator || (iterator = _.identity);
-    var low = 0;
-    var high = array.length;
+    var low = 0, high = array.length;
     while (low < high) {
       var mid = (low + high) >> 1;
       iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
@@ -367,9 +302,10 @@
 
   // Safely convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
-    if (!iterable) return [];
-    if (iterable.toArray) return iterable.toArray();
-    if (_.isArray(iterable) || _.isArguments(iterable)) return slice.call(iterable);
+    if (!iterable)                return [];
+    if (iterable.toArray)         return iterable.toArray();
+    if (_.isArray(iterable))      return slice.call(iterable);
+    if (_.isArguments(iterable))  return slice.call(iterable);
     return _.values(iterable);
   };
 
@@ -388,7 +324,7 @@
     return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
   };
 
-  // Returns everything but the last entry of the array. Especially useful on
+  // Returns everything but the last entry of the array. Especcialy useful on
   // the arguments object. Passing **n** will return all the values in
   // the array, excluding the last N. The **guard** check allows it to work with
   // `_.map`.
@@ -484,9 +420,10 @@
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
   _.zip = function() {
-    var length = _.max(_.pluck(arguments, 'length'));
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
     var results = new Array(length);
-    for (var i = 0; i < length; i++) results[i] = _.pluck(arguments, i);
+    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
     return results;
   };
 
@@ -535,6 +472,7 @@
       range[idx++] = start;
       start += step;
     }
+
     return range;
   };
 
@@ -554,10 +492,10 @@
     if (!_.isFunction(func)) throw new TypeError;
     args = slice.call(arguments, 2);
     return bound = function() {
-      if (!(this instanceof bound)) return func.apply(context, concat.apply(args, arguments));
+      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
       ctor.prototype = func.prototype;
       var self = new ctor;
-      var result = func.apply(self, concat.apply(args, arguments));
+      var result = func.apply(self, args.concat(slice.call(arguments)));
       if (Object(result) === result) return result;
       return self;
     };
@@ -566,20 +504,16 @@
   // Bind all of an object's methods to that object. Useful for ensuring that
   // all callbacks defined on an object belong to it.
   _.bindAll = function(obj) {
-    var i = 1;
-    var funcs = arguments;
-    if (funcs.length < 2) {
-      i = 0;
-      funcs = _.functions(obj);
-    }
-    simpleEach(funcs, function(f) { obj[f] = _.bind(obj[f], obj); }, i);
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
     return obj;
   };
 
   // Memoize an expensive function by storing its results.
   _.memoize = function(func, hasher) {
-    hasher || (hasher = _.identity);
     var memo = {};
+    hasher || (hasher = _.identity);
     return function() {
       var key = hasher.apply(this, arguments);
       return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
@@ -654,7 +588,7 @@
   // conditionally execute the original function.
   _.wrap = function(func, wrapper) {
     return function() {
-      var args = concat.apply([func], arguments);
+      var args = [func].concat(slice.call(arguments));
       return wrapper.apply(this, args);
     };
   };
@@ -662,9 +596,9 @@
   // Returns a function that is the composition of a list of functions, each
   // consuming the return value of the function that follows.
   _.compose = function() {
-    var funcs = arguments;
+    var funcs = slice.call(arguments);
     return function() {
-      var args = arguments;
+      var args = slice.call(arguments);
       for (var i = funcs.length - 1; i >= 0; i--) {
         args = [funcs[i].apply(this, args)];
       }
@@ -688,9 +622,7 @@
   _.keys = nativeKeys || function(obj) {
     if (obj !== Object(obj)) throw new TypeError('Invalid object');
     var keys = [];
-    forProps(obj, function(value, key) {
-      keys[keys.length] = key;
-    }, true);
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
     return keys;
   };
 
@@ -703,29 +635,29 @@
   // Aliased as `methods`
   _.functions = _.methods = function(obj) {
     var names = [];
-    forProps(obj, function(value, key) {
-      if (_.isFunction(value)) names[names.length] = key;
-    });
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
     return names.sort();
   };
 
   // Extend a given object with all the properties in passed-in object(s).
   _.extend = function(obj) {
-    simpleEach(arguments, function(source) {
-      forProps(source, function(value, key) {
-        if (value !== void 0) obj[key] = value;
-      });
-    }, 1);
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) {
+        if (source[prop] !== void 0) obj[prop] = source[prop];
+      }
+    });
     return obj;
   };
 
   // Fill in a given object with default properties.
   _.defaults = function(obj) {
-    simpleEach(arguments, function(source) {
-      forProps(source, function(value, key) {
-        if (obj[key] == null) obj[key] = value;
-      });
-    }, 1);
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) {
+        if (obj[prop] == null) obj[prop] = source[prop];
+      }
+    });
     return obj;
   };
 
@@ -754,8 +686,8 @@
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
-    if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
-    if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
+    if (_.isFunction(a.isEqual)) return a.isEqual(b);
+    if (_.isFunction(b.isEqual)) return b.isEqual(a);
     // Compare `[[Class]]` names.
     var className = toString.call(a);
     if (className != toString.call(b)) return false;
@@ -764,11 +696,13 @@
       case '[object String]':
         // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
         // equivalent to `new String("5")`.
-        return a == String(b);
+        return String(a) == String(b);
       case '[object Number]':
+        a = +a;
+        b = +b;
         // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
         // other numeric values.
-        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+        return a != a ? b != b : (a == 0 ? 1 / a == 1 / b : a == b);
       case '[object Date]':
       case '[object Boolean]':
         // Coerce dates and booleans to numeric primitive values. Dates are compared by their
@@ -808,19 +742,21 @@
       }
     } else {
       // Objects with different constructors are not equivalent.
-      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
+      if ("constructor" in a != "constructor" in b || a.constructor != b.constructor) return false;
       // Deep compare objects.
-      forProps(a, function(value, key) {
-        // Count the expected number of properties.
-        size++;
-        // Deep compare each member.
-        if (!(result = hasOwnProperty.call(b, key) && eq(value, b[key], stack))) return breaker;
-      }, true);
+      for (var key in a) {
+        if (hasOwnProperty.call(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
+        }
+      }
       // Ensure that both objects contain the same number of properties.
       if (result) {
-        forProps(b, function() {
-          return !(size--) && breaker;
-        }, true);
+        for (key in b) {
+          if (hasOwnProperty.call(b, key) && !(size--)) break;
+        }
         result = !size;
       }
     }
@@ -837,15 +773,9 @@
   // Is a given array, string, or object empty?
   // An "empty" object has no enumerable own-properties.
   _.isEmpty = function(obj) {
-    var result = toString.call(obj);
-    if (result == '[object Array]' || result == '[object String]') {
-      return !obj.length;
-    }
-    forProps(obj, function() {
-      result = false;
-      return breaker;
-    }, true);
-    return !!result;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
+    return true;
   };
 
   // Is a given value a DOM element?
@@ -865,11 +795,11 @@
   };
 
   // Is a given variable an arguments object?
-  _.isArguments = function(obj) {
-    return toString.call(obj) == '[object Arguments]';
-  };
-
-  if (!_.isArguments(arguments)) {
+  if (toString.call(arguments) == '[object Arguments]') {
+    _.isArguments = function(obj) {
+      return toString.call(obj) == '[object Arguments]';
+    };
+  } else {
     _.isArguments = function(obj) {
       return !!(obj && hasOwnProperty.call(obj, 'callee'));
     };
@@ -949,7 +879,7 @@
   // Add your own custom functions to the Underscore object, ensuring that
   // they're correctly added to the OOP wrapper as well.
   _.mixin = function(obj) {
-    simpleEach(_.functions(obj), function(name){
+    each(_.functions(obj), function(name){
       addToWrapper(name, _[name] = obj[name]);
     });
   };
@@ -1019,8 +949,8 @@
   // A method to easily add functions to the OOP wrapper.
   var addToWrapper = function(name, func) {
     wrapper.prototype[name] = function() {
-      var args = [this._wrapped];
-      push.apply(args, arguments);
+      var args = slice.call(arguments);
+      unshift.call(args, this._wrapped);
       return result(func.apply(_, args), this._chain);
     };
   };
@@ -1029,7 +959,7 @@
   _.mixin(_);
 
   // Add all mutator Array functions to the wrapper.
-  simpleEach(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
     var method = ArrayProto[name];
     wrapper.prototype[name] = function() {
       method.apply(this._wrapped, arguments);
@@ -1038,7 +968,7 @@
   });
 
   // Add all accessor Array functions to the wrapper.
-  simpleEach(['concat', 'join', 'slice'], function(name) {
+  each(['concat', 'join', 'slice'], function(name) {
     var method = ArrayProto[name];
     wrapper.prototype[name] = function() {
       return result(method.apply(this._wrapped, arguments), this._chain);

From c67eaf672b57ce60625837131d7ac925cfc9d835 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 7 Dec 2011 09:29:11 -0500
Subject: [PATCH 436/533] adding back style and implementation tweaks from #385

---
 underscore.js | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/underscore.js b/underscore.js
index 86e262343..6c06acbab 100644
--- a/underscore.js
+++ b/underscore.js
@@ -189,7 +189,7 @@
   // Delegates to **ECMAScript 5**'s native `some` if available.
   // Aliased as `any`.
   var any = _.some = _.any = function(obj, iterator, context) {
-    iterator = iterator || _.identity;
+    iterator || (iterator = _.identity);
     var result = false;
     if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
@@ -588,7 +588,7 @@
   // conditionally execute the original function.
   _.wrap = function(func, wrapper) {
     return function() {
-      var args = [func].concat(slice.call(arguments));
+      var args = concat.apply([func], arguments);
       return wrapper.apply(this, args);
     };
   };
@@ -596,9 +596,9 @@
   // Returns a function that is the composition of a list of functions, each
   // consuming the return value of the function that follows.
   _.compose = function() {
-    var funcs = slice.call(arguments);
+    var funcs = arguments;
     return function() {
-      var args = slice.call(arguments);
+      var args = arguments;
       for (var i = funcs.length - 1; i >= 0; i--) {
         args = [funcs[i].apply(this, args)];
       }
@@ -686,8 +686,8 @@
     if (a._chain) a = a._wrapped;
     if (b._chain) b = b._wrapped;
     // Invoke a custom `isEqual` method if one is provided.
-    if (_.isFunction(a.isEqual)) return a.isEqual(b);
-    if (_.isFunction(b.isEqual)) return b.isEqual(a);
+    if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
+    if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
     // Compare `[[Class]]` names.
     var className = toString.call(a);
     if (className != toString.call(b)) return false;
@@ -696,13 +696,11 @@
       case '[object String]':
         // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
         // equivalent to `new String("5")`.
-        return String(a) == String(b);
+        return a == String(b);
       case '[object Number]':
-        a = +a;
-        b = +b;
         // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
         // other numeric values.
-        return a != a ? b != b : (a == 0 ? 1 / a == 1 / b : a == b);
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
       case '[object Date]':
       case '[object Boolean]':
         // Coerce dates and booleans to numeric primitive values. Dates are compared by their
@@ -742,7 +740,7 @@
       }
     } else {
       // Objects with different constructors are not equivalent.
-      if ("constructor" in a != "constructor" in b || a.constructor != b.constructor) return false;
+      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
       // Deep compare objects.
       for (var key in a) {
         if (hasOwnProperty.call(a, key)) {
@@ -795,11 +793,10 @@
   };
 
   // Is a given variable an arguments object?
-  if (toString.call(arguments) == '[object Arguments]') {
-    _.isArguments = function(obj) {
-      return toString.call(obj) == '[object Arguments]';
-    };
-  } else {
+  _.isArguments = function(obj) {
+    return toString.call(obj) == '[object Arguments]';
+  };
+  if (!_.isArguments(arguments)) {
     _.isArguments = function(obj) {
       return !!(obj && hasOwnProperty.call(obj, 'callee'));
     };

From cf1d69227b3a7ccba6cea46a9a5b8e4b3cb10f6e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 7 Dec 2011 09:30:55 -0500
Subject: [PATCH 437/533] adding concat reference

---
 underscore.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/underscore.js b/underscore.js
index 6c06acbab..6e01bbad1 100644
--- a/underscore.js
+++ b/underscore.js
@@ -25,6 +25,7 @@
 
   // Create quick reference variables for speed access to core prototypes.
   var slice            = ArrayProto.slice,
+      concat           = ArrayProto.concat,
       unshift          = ArrayProto.unshift,
       toString         = ObjProto.toString,
       hasOwnProperty   = ObjProto.hasOwnProperty;

From 770f0876b360c69f519c726dc4c55b4821067c6a Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 7 Dec 2011 09:35:07 -0500
Subject: [PATCH 438/533] re-adding 649f62

---
 test/collections.js | 20 ++++++++++++++------
 underscore.js       | 12 +++++++-----
 2 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 1726629eb..499432ac1 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -77,13 +77,13 @@ $(document).ready(function() {
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
 
     ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+    equals(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+    raises(function() { _.reduce([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
-    // Sparse arrays:
-    var sparseArray  = [];
-    sparseArray[100] = 10;
-    sparseArray[200] = 20;
-
-    equals(_.reduce(sparseArray, function(a, b){ return a + b }), 30, 'initially-sparse arrays with no memo');
+    var sparseArray = [];
+    sparseArray[0] = 20;
+    sparseArray[2] = -5;
+    equals(_.reduce(sparseArray, function(a, b){ return a - b }), 25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: reduceRight', function() {
@@ -105,6 +105,14 @@ $(document).ready(function() {
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
 
     ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+
+    equals(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+    raises(function() { _.reduceRight([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
+
+    var sparseArray = [];
+    sparseArray[0] = 20;
+    sparseArray[2] = -5;
+    equals(_.reduceRight(sparseArray, function(a, b){ return a - b }), -25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: detect', function() {
diff --git a/underscore.js b/underscore.js
index 6e01bbad1..22446234d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -108,7 +108,7 @@
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
-    var initial = memo !== void 0;
+    var initial = arguments.length > 2;
     if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
@@ -122,20 +122,22 @@
         memo = iterator.call(context, memo, value, index, list);
       }
     });
-    if (!initial) throw new TypeError("Reduce of empty array with no initial value");
+    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
     return memo;
   };
 
   // The right-associative version of reduce, also known as `foldr`.
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
     if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
-      return memo !== void 0 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
     }
-    var reversed = (_.isArray(obj) ? obj.slice() : _.toArray(obj)).reverse();
-    return _.reduce(reversed, iterator, memo, context);
+    var reversed = _.toArray(obj).reverse();
+    if (context && !initial) iterator = _.bind(iterator, context);
+    return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
   };
 
   // Return the first value which passes a truth test. Aliased as `detect`.

From 813bb57bf07d507790c6d0957dd113f0cbff0f5e Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 7 Dec 2011 10:12:08 -0500
Subject: [PATCH 439/533] Underscore.js 1.2.3

---
 docs/underscore.html | 66 +++++++++++++++++++++++---------------------
 index.html           | 28 +++++++++++++++----
 package.json         |  2 +-
 test/arrays.js       |  5 ----
 underscore-min.js    | 48 ++++++++++++++++----------------
 underscore.js        | 14 ++--------
 6 files changed, 86 insertions(+), 77 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index d2dafbd59..fffbe9cbb 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,11 +1,12 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.2
-(c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.3
+(c) 2009-2011 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
 </code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets returned to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="p">{};</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">FuncProto</span> <span class="o">=</span> <span class="nb">Function</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>            <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
+      <span class="nx">concat</span>           <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">concat</span><span class="p">,</span>
       <span class="nx">unshift</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
       <span class="nx">toString</span>         <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
       <span class="nx">hasOwnProperty</span>   <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
@@ -32,7 +33,7 @@ CommonJS, add <code>_</code> to the global object.</p>             </td>
       <span class="k">return</span> <span class="nx">_</span><span class="p">;</span>
     <span class="p">});</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.2&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.3&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -60,7 +61,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
+    <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&gt;</span> <span class="mi">2</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduce</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">===</span> <span class="nx">nativeReduce</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -74,17 +75,19 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
         <span class="nx">memo</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
       <span class="p">}</span>
     <span class="p">});</span>
-    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s2">&quot;Reduce of empty array with no initial value&quot;</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Reduce of empty array with no initial value&#39;</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&gt;</span> <span class="mi">2</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeReduceRight</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">===</span> <span class="nx">nativeReduceRight</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">context</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
-      <span class="k">return</span> <span class="nx">memo</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
+      <span class="k">return</span> <span class="nx">initial</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">)</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">reduceRight</span><span class="p">(</span><span class="nx">iterator</span><span class="p">);</span>
     <span class="p">}</span>
-    <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)).</span><span class="nx">reverse</span><span class="p">();</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">reverse</span><span class="p">();</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">context</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
+    <span class="k">return</span> <span class="nx">initial</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">);</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
@@ -124,7 +127,7 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">;</span>
+    <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeSome</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span> <span class="o">===</span> <span class="nx">nativeSome</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">some</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -269,9 +272,10 @@ passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Take the difference between one array and another.
-Only the elements present in just the first array will remain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">other</span><span class="p">)</span> <span class="p">{</span>
-    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Take the difference between one array and a number of other arrays.
+Only the elements present in just the first array will remain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+    <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
@@ -292,13 +296,13 @@ for <strong>isSorted</strong> to use binary search.</p>             </td>
       <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span> <span class="o">?</span> <span class="nx">i</span> <span class="o">:</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
-    <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">i</span> <span class="k">in</span> <span class="nx">array</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-    <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
+    <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">i</span> <span class="k">in</span> <span class="nx">array</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
@@ -400,14 +404,14 @@ often you call it. Useful for lazy initialization.</p>             </td>
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">));</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">concat</span><span class="p">.</span><span class="nx">apply</span><span class="p">([</span><span class="nx">func</span><span class="p">],</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span>
         <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">funcs</span><span class="p">[</span><span class="nx">i</span><span class="p">].</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">)];</span>
       <span class="p">}</span>
@@ -457,15 +461,13 @@ order to perform operations on intermediate results within the chain.</p>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
 See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span> <span class="o">||</span> <span class="nx">b</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare <code>[[Class]]</code> names.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">className</span> <span class="o">=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare <code>[[Class]]</code> names.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">className</span> <span class="o">=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">className</span> <span class="o">!=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">switch</span> <span class="p">(</span><span class="nx">className</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Strings, numbers, dates, and booleans are compared by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object String]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Primitives and their corresponding object wrappers are equivalent; thus, <code>"5"</code> is
-equivalent to <code>new String("5")</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nb">String</span><span class="p">(</span><span class="nx">a</span><span class="p">)</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-      <span class="k">case</span> <span class="s1">&#39;[object Number]&#39;</span><span class="o">:</span>
-        <span class="nx">a</span> <span class="o">=</span> <span class="o">+</span><span class="nx">a</span><span class="p">;</span>
-        <span class="nx">b</span> <span class="o">=</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p><code>NaN</code>s are equivalent, but non-reflexive. An <code>egal</code> comparison is performed for
-other numeric values.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nx">a</span> <span class="o">!=</span> <span class="nx">a</span> <span class="o">?</span> <span class="nx">b</span> <span class="o">!=</span> <span class="nx">b</span> <span class="o">:</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="mi">0</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">b</span><span class="p">);</span>
+equivalent to <code>new String("5")</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nx">a</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+      <span class="k">case</span> <span class="s1">&#39;[object Number]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p><code>NaN</code>s are equivalent, but non-reflexive. An <code>egal</code> comparison is performed for
+other numeric values.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nx">a</span> <span class="o">!=</span> <span class="o">+</span><span class="nx">a</span> <span class="o">?</span> <span class="nx">b</span> <span class="o">!=</span> <span class="o">+</span><span class="nx">b</span> <span class="o">:</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="mi">0</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">);</span>
       <span class="k">case</span> <span class="s1">&#39;[object Date]&#39;</span><span class="o">:</span>
       <span class="k">case</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Coerce dates and booleans to numeric primitive values. Dates are compared by their
 millisecond representations. Note that invalid dates with millisecond representations
@@ -485,7 +487,7 @@ unique nested structures.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Deep compare the contents, ignoring non-numeric properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">while</span> <span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Ensure commutative equality for sparse arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
       <span class="p">}</span>
-    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Objects with different constructors are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="s2">&quot;constructor&quot;</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s2">&quot;constructor&quot;</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">||</span> <span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Objects with different constructors are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">||</span> <span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
       <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
@@ -510,11 +512,10 @@ Delegates to ECMA5's native Array.isArray</p>             </td>             <td
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">)</span> <span class="p">{</span>
-    <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">;</span>
-    <span class="p">};</span>
-  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">;</span>
+  <span class="p">};</span>
+  <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">arguments</span><span class="p">))</span> <span class="p">{</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
     <span class="p">};</span>
@@ -583,7 +584,10 @@ and correctly escapes quotes within interpolated code.</p>             </td>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\t/g</span><span class="p">,</span> <span class="s1">&#39;\\t&#39;</span><span class="p">)</span>
          <span class="o">+</span> <span class="s2">&quot;&#39;);}return __p.join(&#39;&#39;);&quot;</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">func</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Function</span><span class="p">(</span><span class="s1">&#39;obj&#39;</span><span class="p">,</span> <span class="s1">&#39;_&#39;</span><span class="p">,</span> <span class="nx">tmpl</span><span class="p">);</span>
-    <span class="k">return</span> <span class="nx">data</span> <span class="o">?</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">)</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">)</span> <span class="p">};</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="k">return</span> <span class="nx">func</span><span class="p">(</span><span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">);</span>
+    <span class="k">return</span> <span class="kd">function</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
+      <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">);</span>
+    <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
 underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
diff --git a/index.html b/index.html
index fd00cec9e..745311283 100644
--- a/index.html
+++ b/index.html
@@ -126,11 +126,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.2.2)</a></td>
+        <td><a href="underscore.js">Development Version (1.2.3)</a></td>
         <td><i>34kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.2.2)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.2.3)</a></td>
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -159,7 +159,7 @@
       <br />
       <span class="methods"><a href="#first">first</a>, <a href="#initial">initial</a>, <a href="#last">last</a>, <a href="#rest">rest</a>,
       <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, 
-      <a href="#union">union</a>, <a href="#intersection">intersection</a>, <a href="#difference">difference</a>, 
+      <a href="#union">union</a>, <a href="#intersection">intersection</a>, <a href="#difference">difference</a>,
       <a href="#uniq">uniq</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a>,
       <a href="#lastIndexOf">lastIndexOf</a>, <a href="#range">range</a></span>
     </p>
@@ -620,10 +620,10 @@ _.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]);
 </pre>
 
       <p id="difference">
-        <b class="header">difference</b><code>_.difference(array, other)</code>
+        <b class="header">difference</b><code>_.difference(array, *others)</code>
         <br />
         Similar to <b>without</b>, but returns the values from <b>array</b> that
-        are not present in <b>other</b>.
+        are not present in the <b>other</b> arrays.
       </p>
       <pre>
 _.difference([1, 2, 3, 4, 5], [5, 2, 10]);
@@ -1338,6 +1338,24 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.2.3</b> &mdash; <small><i>Dec. 7, 2011</i></small><br />
+        <ul>
+          <li>
+            Dynamic scope is now preserved for compiled <tt>_.template</tt> functions,
+            so you can use the value of <tt>this</tt> if you like.
+          </li>
+          <li>
+            Sparse array support of <tt>_.indexOf</tt>, <tt>_.lastIndexOf</tt>.
+          </li>
+          <li>
+            Both <tt>_.reduce</tt> and <tt>_.reduceRight</tt> can now be passed an
+            explicitly <tt>undefined</tt> value. (There's no reason why you'd 
+            want to do this.)
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.2.2</b> &mdash; <small><i>Nov. 14, 2011</i></small><br />
         <ul>
diff --git a/package.json b/package.json
index 8481b773a..eda11ad52 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.2.2"
+  "version"       : "1.2.3"
 }
diff --git a/test/arrays.js b/test/arrays.js
index 1c910355f..b3b1ce15e 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -115,11 +115,6 @@ $(document).ready(function() {
     equals(result.join(' '), '3 4', 'takes the difference of three arrays');
   });
 
-  test("arrays: symDifference", function() {
-    var result = _.symDifference([1, 2, 3], [2, 22, 222], [3, 33, 333], [222, 333, 444], [5]);
-    equals(result.join(' '), '1 22 33 444 5', 'takes the symmetric difference');
-  });
-
   test('arrays: zip', function() {
     var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true];
     var stooges = _.zip(names, ages, leaders);
diff --git a/underscore-min.js b/underscore-min.js
index fadc96eca..a2a40e4c0 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,30 +1,30 @@
-// Underscore.js 1.2.2
-// (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore.js 1.2.3
+// (c) 2009-2011 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
-(function(){function r(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(b.isFunction(a.isEqual))return a.isEqual(c);if(b.isFunction(c.isEqual))return c.isEqual(a);var e=l.call(a);if(e!=l.call(c))return false;switch(e){case "[object String]":return String(a)==String(c);case "[object Number]":return a=+a,c=+c,a!=a?c!=c:a==0?1/a==1/c:a==c;case "[object Date]":case "[object Boolean]":return+a==+c;case "[object RegExp]":return a.source==
+(function(){function r(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual&&b.isFunction(a.isEqual))return a.isEqual(c);if(c.isEqual&&b.isFunction(c.isEqual))return c.isEqual(a);var e=l.call(a);if(e!=l.call(c))return false;switch(e){case "[object String]":return a==String(c);case "[object Number]":return a!=+a?c!=+c:a==0?1/a==1/c:a==+c;case "[object Date]":case "[object Boolean]":return+a==+c;case "[object RegExp]":return a.source==
 c.source&&a.global==c.global&&a.multiline==c.multiline&&a.ignoreCase==c.ignoreCase}if(typeof a!="object"||typeof c!="object")return false;for(var f=d.length;f--;)if(d[f]==a)return true;d.push(a);var f=0,g=true;if(e=="[object Array]"){if(f=a.length,g=f==c.length)for(;f--;)if(!(g=f in a==f in c&&r(a[f],c[f],d)))break}else{if("constructor"in a!="constructor"in c||a.constructor!=c.constructor)return false;for(var h in a)if(m.call(a,h)&&(f++,!(g=m.call(c,h)&&r(a[h],c[h],d))))break;if(g){for(h in c)if(m.call(c,
-h)&&!f--)break;g=!f}}d.pop();return g}var s=this,F=s._,o={},k=Array.prototype,p=Object.prototype,i=k.slice,G=k.unshift,l=p.toString,m=p.hasOwnProperty,v=k.forEach,w=k.map,x=k.reduce,y=k.reduceRight,z=k.filter,A=k.every,B=k.some,q=k.indexOf,C=k.lastIndexOf,p=Array.isArray,H=Object.keys,t=Function.prototype.bind,b=function(a){return new n(a)};if(typeof exports!=="undefined"){if(typeof module!=="undefined"&&module.exports)exports=module.exports=b;exports._=b}else typeof define==="function"&&define.amd?
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-return e};var D=b.some=b.any=function(a,c,d){var c=c||b.identity,e=false;if(a==null)return e;if(B&&a.some===B)return a.some(c,d);j(a,function(a,b,h){if(e||(e=c.call(d,a,b,h)))return o});return!!e};b.include=b.contains=function(a,c){var b=false;if(a==null)return b;return q&&a.indexOf===q?a.indexOf(c)!=-1:b=D(a,function(a){return a===c})};b.invoke=function(a,c){var d=i.call(arguments,2);return b.map(a,function(a){return(c.call?c||a:a[c]).apply(a,d)})};b.pluck=function(a,c){return b.map(a,function(a){return a[c]})};
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diff --git a/underscore.js b/underscore.js
index 22446234d..b6b28137d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,5 +1,5 @@
-//     Underscore.js 1.2.2
-//     (c) 2011 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore.js 1.2.3
+//     (c) 2009-2011 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
 //     Oliver Steele's Functional, and John Resig's Micro-Templating.
@@ -68,7 +68,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.2.2';
+  _.VERSION = '1.2.3';
 
   // Collection Functions
   // --------------------
@@ -412,14 +412,6 @@
     return _.filter(array, function(value){ return !_.include(rest, value); });
   };
 
-  // Take the symmetric difference between a list of arrays. Only the elements
-  // present in one of the input arrays will remain.
-  _.symDifference = function() {
-    return _.reduce(arguments, function(memo, array) {
-      return _.union(_.difference(memo, array), _.difference(array, memo));
-    });
-  };
-
   // Zip together multiple lists into a single array -- elements that share
   // an index go together.
   _.zip = function() {

From 81cb0d3a8617b47cbef86c500bad19bddecd7c46 Mon Sep 17 00:00:00 2001
From: Stuart Knightley <stuart@stuartk.com>
Date: Thu, 8 Dec 2011 11:33:31 -0800
Subject: [PATCH 440/533] Add failing test for Javascript in templates

Uses an escaped character in Javascript embedded in a template. Gets
incorrectly replaced when templating.
---
 test/utility.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/utility.js b/test/utility.js
index e49d5e27f..c609dc2c3 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -63,6 +63,10 @@ $(document).ready(function() {
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
     equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
+    var escapedCharsInJavascriptTemplate = _.template("<ul><% _.each(numbers.split('\\n'), function(item) { %><li><%= item %></li><% }) %></ul>");
+    result = escapedCharsInJavascriptTemplate({numbers: "one\ntwo\nthree\nfour"});
+    equals(result, "<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>", 'Can use escaped characters (e.g. \\n) in Javascript')
+
     var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"thumbnail\" rel=\"<%= p %>\"></div><% }); %>");
     result = namespaceCollisionTemplate({
       pageCount: 3,

From c8ecb47765b06c8ba39176f77162c4180352d33d Mon Sep 17 00:00:00 2001
From: Stuart Knightley <stuart@stuartk.com>
Date: Thu, 8 Dec 2011 11:36:20 -0800
Subject: [PATCH 441/533] Templating fix for when an escaped character is used
 in Javascript

If an escaped character (e.g. \n) is used in embedded Javascript inside
a template then it gets escaped to \\n. If someone has put an escaped
character in their JS then they probably want it left that way.

This commit replaces \\s with a single \ when inside evaluation tags,
reverting the previous template escaping.
---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index b6b28137d..cd2d2bb0a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -909,7 +909,8 @@
          })
          .replace(c.evaluate || null, function(match, code) {
            return "');" + code.replace(/\\'/g, "'")
-                              .replace(/[\r\n\t]/g, ' ') + ";__p.push('";
+                              .replace(/[\r\n\t]/g, ' ')
+                              .replace(/\\\\/g, '\\') + ";__p.push('";
          })
          .replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')

From eb42c856c4ab57df0d57dac750aa3f81286f1c7d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 16 Dec 2011 10:05:32 -0500
Subject: [PATCH 442/533] Fixes #406

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 745311283..ca2ec79ba 100644
--- a/index.html
+++ b/index.html
@@ -1049,7 +1049,7 @@ _.isString("moe");
       <p id="isNumber">
         <b class="header">isNumber</b><code>_.isNumber(object)</code>
         <br />
-        Returns <i>true</i> if <b>object</b> is a Number.
+        Returns <i>true</i> if <b>object</b> is a Number (including <tt>NaN</tt>).
       </p>
       <pre>
 _.isNumber(8.4 * 5);

From 3c5686f7842a2f52e1692348a848124d3578b993 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 16 Dec 2011 12:41:20 -0500
Subject: [PATCH 443/533] Fixes #403

---
 test/collections.js | 7 +++++--
 test/functions.js   | 7 +++----
 underscore.js       | 1 +
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 499432ac1..e66dac48b 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -49,6 +49,9 @@ $(document).ready(function() {
 
     var ifnull = _.map(null, function(){});
     ok(_.isArray(ifnull) && ifnull.length === 0, 'handles a null properly');
+
+    var length = _.map(Array(2), function(v) { return v; }).length;
+    equals(length, 2, "can preserve a sparse array's length");
   });
 
   test('collections: reduce', function() {
@@ -83,7 +86,7 @@ $(document).ready(function() {
     var sparseArray = [];
     sparseArray[0] = 20;
     sparseArray[2] = -5;
-    equals(_.reduce(sparseArray, function(a, b){ return a - b }), 25, 'initially-sparse arrays with no memo');
+    equals(_.reduce(sparseArray, function(a, b){ return a - b; }), 25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: reduceRight', function() {
@@ -112,7 +115,7 @@ $(document).ready(function() {
     var sparseArray = [];
     sparseArray[0] = 20;
     sparseArray[2] = -5;
-    equals(_.reduceRight(sparseArray, function(a, b){ return a - b }), -25, 'initially-sparse arrays with no memo');
+    equals(_.reduceRight(sparseArray, function(a, b){ return a - b; }), -25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: detect', function() {
diff --git a/test/functions.js b/test/functions.js
index f084b015e..fdaddcc96 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -112,10 +112,9 @@ $(document).ready(function() {
     throttledUpdate(1); throttledUpdate(2); throttledUpdate(3);
     setTimeout(function(){ throttledUpdate(4); }, 120);
     setTimeout(function(){ throttledUpdate(5); }, 140);
-    setTimeout(function(){ throttledUpdate(6); }, 260);
-    setTimeout(function(){ throttledUpdate(7); }, 270);
-    _.delay(function(){ ok(value == 1, "updated to latest value"); }, 40);
-    _.delay(function(){ ok(value == 7, "updated to latest value"); start(); }, 400);
+    setTimeout(function(){ throttledUpdate(6); }, 250);
+    _.delay(function(){ equals(value, 1, "updated to latest value"); }, 40);
+    _.delay(function(){ equals(value, 6, "updated to latest value"); start(); }, 400);
   });
 
   asyncTest("functions: throttle once", 1, function() {
diff --git a/underscore.js b/underscore.js
index b6b28137d..748ea920c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -102,6 +102,7 @@
     each(obj, function(value, index, list) {
       results[results.length] = iterator.call(context, value, index, list);
     });
+    if (obj.length === +obj.length) results.length = obj.length;
     return results;
   };
 

From b27ed66d77375accd845ec85c31a6f405f4cdb24 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 16 Dec 2011 12:47:32 -0500
Subject: [PATCH 444/533] Fixes #397

---
 underscore.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 748ea920c..fb055a454 100644
--- a/underscore.js
+++ b/underscore.js
@@ -955,8 +955,11 @@
   each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
     var method = ArrayProto[name];
     wrapper.prototype[name] = function() {
-      method.apply(this._wrapped, arguments);
-      return result(this._wrapped, this._chain);
+      var wrapped = this._wrapped;
+      method.apply(wrapped, arguments);
+      var length = wrapped.length;
+      if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0];
+      return result(wrapped, this._chain);
     };
   });
 

From 5ca27ffed139bb14aad12040c05f9b88a7ab8597 Mon Sep 17 00:00:00 2001
From: Bob Remeika <bremeika@yammer-inc.com>
Date: Tue, 20 Dec 2011 01:51:51 -0800
Subject: [PATCH 445/533] Fixes #409 - Unexpected arguments passed to wrapper
 function in _.wrap when the first argument of calling the wrapper function is
 an array

---
 test/functions.js | 5 +++++
 underscore.js     | 3 +--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index fdaddcc96..78721af16 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -163,6 +163,11 @@ $(document).ready(function() {
     var obj   = {name : "Moe"};
     obj.hi    = _.wrap(inner, function(fn){ return fn() + this.name; });
     equals(obj.hi(), "Hello Moe");
+
+    var noop    = function(){};
+    var wrapped = _.wrap(noop, function(fn){ return Array.prototype.slice.call(arguments, 0); });
+    var ret     = wrapped(['whats', 'your'], 'vector', 'victor');
+    same(ret, [noop, ['whats', 'your'], 'vector', 'victor']);
   });
 
   test("functions: compose", function() {
diff --git a/underscore.js b/underscore.js
index 9cf1de923..638ae6a6c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -25,7 +25,6 @@
 
   // Create quick reference variables for speed access to core prototypes.
   var slice            = ArrayProto.slice,
-      concat           = ArrayProto.concat,
       unshift          = ArrayProto.unshift,
       toString         = ObjProto.toString,
       hasOwnProperty   = ObjProto.hasOwnProperty;
@@ -584,7 +583,7 @@
   // conditionally execute the original function.
   _.wrap = function(func, wrapper) {
     return function() {
-      var args = concat.apply([func], arguments);
+      var args = [func].concat(slice.call(arguments, 0));
       return wrapper.apply(this, args);
     };
   };

From 6baf8e877b94046cefb0b1bb514f38511dd47719 Mon Sep 17 00:00:00 2001
From: Vladimir Chernis <iamvlad@gmail.com>
Date: Thu, 22 Dec 2011 11:26:44 -0800
Subject: [PATCH 446/533] doc for bind: currying -> partial application

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index ca2ec79ba..7bdc7afa3 100644
--- a/index.html
+++ b/index.html
@@ -715,7 +715,7 @@ _.range(0);
         Bind a <b>function</b> to an <b>object</b>, meaning that whenever
         the function is called, the value of <i>this</i> will be the <b>object</b>.
         Optionally, bind <b>arguments</b> to the <b>function</b> to pre-fill them,
-        also known as <b>currying</b>.
+        also known as <b>partial application</b>.
       </p>
       <pre>
 var func = function(greeting){ return greeting + ': ' + this.name };

From 2206092e25f66f3a0dbb05c24509a7831b1863fe Mon Sep 17 00:00:00 2001
From: fredericksgary <fredericksgary@gmail.com>
Date: Thu, 22 Dec 2011 14:21:28 -0500
Subject: [PATCH 447/533] Use _.isFunction so ClojureScript doesn't break
 underscore

Clojurescript adds a call method to strings, so passing a string to
_.invoke produces the wrong behavior.
---
 test/collections.js | 13 +++++++++++++
 underscore.js       |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/test/collections.js b/test/collections.js
index e66dac48b..46bcdf2af 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -180,6 +180,19 @@ $(document).ready(function() {
     equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
   });
 
+  // Relevant when using ClojureScript
+  test('collections: invoke when strings have a call method', function() {
+    String.prototype.call = function(){return 42;}
+    var list = [[5, 1, 7], [3, 2, 1]];
+    var s = "foo";
+    equals(s.call(), 42, "call function exists");
+    var result = _.invoke(list, 'sort');
+    equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
+    equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
+    delete String.prototype.call;
+    equals(s.call, undefined, "call function removed");
+  });
+
   test('collections: pluck', function() {
     var people = [{name : 'moe', age : 30}, {name : 'curly', age : 50}];
     equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'pulls names out of objects');
diff --git a/underscore.js b/underscore.js
index 638ae6a6c..73b3873f1 100644
--- a/underscore.js
+++ b/underscore.js
@@ -218,7 +218,7 @@
   _.invoke = function(obj, method) {
     var args = slice.call(arguments, 2);
     return _.map(obj, function(value) {
-      return (method.call ? method || value : value[method]).apply(value, args);
+      return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
     });
   };
 

From 0d463de74adad6538bbff14997b8ba560b736301 Mon Sep 17 00:00:00 2001
From: Alan Hogan <contact@alanhogan.com>
Date: Thu, 22 Dec 2011 18:03:03 -0800
Subject: [PATCH 448/533] Extends definitions of throttle & debounce to make
 usage extra-clear.

---
 index.html | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index ca2ec79ba..6d866454a 100644
--- a/index.html
+++ b/index.html
@@ -794,6 +794,13 @@ _.defer(function(){ alert('deferred'); });
         will only actually call the wrapped function at most once per every <b>wait</b>
         milliseconds. Useful for rate-limiting events that occur faster than you
         can keep up with.
+        <br />
+        <br />
+        This method returns a function; it does
+        not itself execute its first argument. You should call <code>_.throttle</code>
+        only <em>once</em> for each function you wish to debounce (not repeatedly!).
+        It is the function returned from that once call to <code>_.throttle</code>
+        that you should invoke on each occurrance of the event you wish to throttle.
       </p>
       <pre>
 var throttled = _.throttle(updatePosition, 100);
@@ -808,7 +815,18 @@ $(window).scroll(throttled);
         was invoked. Useful for implementing behavior that should only happen 
         <i>after</i> the input has stopped arriving. For example: rendering a 
         preview of a Markdown comment, recalculating a layout after the window 
-        has stopped being resized...
+        has stopped being resized, etc.
+        <br />
+        <br />
+        Please note that the first invocation of a debounced function will *not*
+        immediately execute it, but rather, the first execution will be at least <var>wait</var>
+        milliseconds later.
+        <br />
+        <br />
+        As with <code>throttle</code>, this method returns a function; it does
+        not itself execute its first argument. You should call <code>_.debounce</code>
+        only <em>once</em> for each function you wish to debounce, and you should
+        call the returned function every time the event you wish to debounce occurs.
       </p>
       <pre>
 var lazyLayout = _.debounce(calculateLayout, 300);

From 3a225eada5f06fd7c3e146225d61c860a8db0a82 Mon Sep 17 00:00:00 2001
From: Alan Hogan <contact@alanhogan.com>
Date: Fri, 23 Dec 2011 16:48:56 -0800
Subject: [PATCH 449/533] Typo

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 6d866454a..9ec7b5f88 100644
--- a/index.html
+++ b/index.html
@@ -798,7 +798,7 @@ _.defer(function(){ alert('deferred'); });
         <br />
         This method returns a function; it does
         not itself execute its first argument. You should call <code>_.throttle</code>
-        only <em>once</em> for each function you wish to debounce (not repeatedly!).
+        only <em>once</em> for each function you wish to throttle (not repeatedly!).
         It is the function returned from that once call to <code>_.throttle</code>
         that you should invoke on each occurrance of the event you wish to throttle.
       </p>

From 62c814d9fee214c19cf29695ded2eaab6bbaf0f8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 30 Dec 2011 15:07:22 -0500
Subject: [PATCH 450/533] Fixes #408: _.chain(object) as well as
 _(object).chain()

---
 test/chaining.js | 12 ++++++++++++
 underscore.js    |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/test/chaining.js b/test/chaining.js
index 64b0500ef..0e3d5f385 100644
--- a/test/chaining.js
+++ b/test/chaining.js
@@ -32,6 +32,18 @@ $(document).ready(function() {
     equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
   });
 
+  test("chaining: select/reject/sortBy in functional style", function() {
+    var numbers = [1,2,3,4,5,6,7,8,9,10];
+    numbers = _.chain(numbers).select(function(n) {
+      return n % 2 == 0;
+    }).reject(function(n) {
+      return n % 4 == 0;
+    }).sortBy(function(n) {
+      return -n;
+    }).value();
+    equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
+  });
+
   test("chaining: reverse/concat/unshift/pop/map", function() {
     var numbers = [1,2,3,4,5];
     numbers = _(numbers).chain()
diff --git a/underscore.js b/underscore.js
index 73b3873f1..8111346a2 100644
--- a/underscore.js
+++ b/underscore.js
@@ -923,6 +923,11 @@
     };
   };
 
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
   // The OOP Wrapper
   // ---------------
 

From 7157d0187f46d274804d88469b1c7479da6bc80b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 4 Jan 2012 15:22:33 -0500
Subject: [PATCH 451/533] removing voluminous verbose verbiage

---
 index.html | 30 +++++++-----------------------
 1 file changed, 7 insertions(+), 23 deletions(-)

diff --git a/index.html b/index.html
index 9ec7b5f88..c5719e795 100644
--- a/index.html
+++ b/index.html
@@ -790,17 +790,11 @@ _.defer(function(){ alert('deferred'); });
       <p id="throttle">
         <b class="header">throttle</b><code>_.throttle(function, wait)</code>
         <br />
-        Returns a throttled version of the function, that, when invoked repeatedly, 
-        will only actually call the wrapped function at most once per every <b>wait</b>
+        Creates and returns a new, throttled version of the passed function, 
+        that, when invoked repeatedly, will only actually call the original function 
+        at most once per every <b>wait</b>
         milliseconds. Useful for rate-limiting events that occur faster than you
         can keep up with.
-        <br />
-        <br />
-        This method returns a function; it does
-        not itself execute its first argument. You should call <code>_.throttle</code>
-        only <em>once</em> for each function you wish to throttle (not repeatedly!).
-        It is the function returned from that once call to <code>_.throttle</code>
-        that you should invoke on each occurrance of the event you wish to throttle.
       </p>
       <pre>
 var throttled = _.throttle(updatePosition, 100);
@@ -810,23 +804,13 @@ $(window).scroll(throttled);
       <p id="debounce">
         <b class="header">debounce</b><code>_.debounce(function, wait)</code>
         <br />
-        Calling a debounced function will postpone its execution until after 
-        <b>wait</b> milliseconds have elapsed since the last time the function 
+        Creates and returns a new debounced version of the passed function that
+        will postpone its execution until after 
+        <b>wait</b> milliseconds have elapsed since the last time it  
         was invoked. Useful for implementing behavior that should only happen 
         <i>after</i> the input has stopped arriving. For example: rendering a 
         preview of a Markdown comment, recalculating a layout after the window 
-        has stopped being resized, etc.
-        <br />
-        <br />
-        Please note that the first invocation of a debounced function will *not*
-        immediately execute it, but rather, the first execution will be at least <var>wait</var>
-        milliseconds later.
-        <br />
-        <br />
-        As with <code>throttle</code>, this method returns a function; it does
-        not itself execute its first argument. You should call <code>_.debounce</code>
-        only <em>once</em> for each function you wish to debounce, and you should
-        call the returned function every time the event you wish to debounce occurs.
+        has stopped being resized, and so on.
       </p>
       <pre>
 var lazyLayout = _.debounce(calculateLayout, 300);

From 69ed6177ab27382ccac35ffdb596f2f2d117e323 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 4 Jan 2012 16:00:36 -0500
Subject: [PATCH 452/533] Fixes #411. Partially adding _.templateSettings could
 break template strings containing the words 'null' or 'undefined'.

---
 index.html      |  9 +++++----
 test/utility.js |  3 +++
 underscore.js   | 11 ++++++++---
 3 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/index.html b/index.html
index c5719e795..2ec286681 100644
--- a/index.html
+++ b/index.html
@@ -1235,10 +1235,11 @@ compiled({epithet: "stooge"});
       <p>
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.
-        Define an <b>interpolate</b> regex, and an (optional) <b>evaluate</b> regex
-        to match expressions that should be inserted and evaluated, respectively.
-        If no <b>evaluate</b> regex is provided, your templates will only be 
-        capable of interpolating values. 
+        Define an <b>interpolate</b> regex to match expressions that should be 
+        interpolated verbatim, an <b>escape</b> regex to match expressions that should 
+        be inserted after being HTML escaped, and an <b>evaluate</b> regex to match
+        expressions that should be evaluated without insertion into the resulting
+        string. You may define or omit any combination of the three.
         For example, to perform
         <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a>
         style templating:
diff --git a/test/utility.js b/test/utility.js
index c609dc2c3..30ba3a940 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -144,6 +144,9 @@ $(document).ready(function() {
 
     var mustache = _.template("Hello {{planet}}!");
     equals(mustache({planet : "World"}), "Hello World!", "can mimic mustache.js");
+
+    var templateWithNull = _.template("a null undefined {{planet}}");
+    equals(templateWithNull({planet : "world"}), "a null undefined world", "can handle missing escape and evaluate settings");
   });
 
 });
diff --git a/underscore.js b/underscore.js
index 8111346a2..76e3f7910 100644
--- a/underscore.js
+++ b/underscore.js
@@ -892,6 +892,11 @@
     escape      : /<%-([\s\S]+?)%>/g
   };
 
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /.^/;
+
   // JavaScript micro-templating, similar to John Resig's implementation.
   // Underscore templating handles arbitrary delimiters, preserves whitespace,
   // and correctly escapes quotes within interpolated code.
@@ -901,13 +906,13 @@
       'with(obj||{}){__p.push(\'' +
       str.replace(/\\/g, '\\\\')
          .replace(/'/g, "\\'")
-         .replace(c.escape, function(match, code) {
+         .replace(c.escape || noMatch, function(match, code) {
            return "',_.escape(" + code.replace(/\\'/g, "'") + "),'";
          })
-         .replace(c.interpolate, function(match, code) {
+         .replace(c.interpolate || noMatch, function(match, code) {
            return "'," + code.replace(/\\'/g, "'") + ",'";
          })
-         .replace(c.evaluate || null, function(match, code) {
+         .replace(c.evaluate || noMatch, function(match, code) {
            return "');" + code.replace(/\\'/g, "'")
                               .replace(/[\r\n\t]/g, ' ')
                               .replace(/\\\\/g, '\\') + ";__p.push('";

From 4946c549b2f236245aa619109b44308a6641ada5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 4 Jan 2012 16:17:00 -0500
Subject: [PATCH 453/533] Underscore.js 1.2.4

---
 LICENSE              |  2 +-
 docs/underscore.html | 48 ++++++++++++++++++++++++++------------------
 index.html           | 42 +++++++++++++++++++++++++++++---------
 package.json         |  2 +-
 underscore-min.js    | 47 ++++++++++++++++++++++---------------------
 underscore.js        |  6 +++---
 6 files changed, 89 insertions(+), 58 deletions(-)

diff --git a/LICENSE b/LICENSE
index 58c73b9e9..61d28c08e 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2011 Jeremy Ashkenas, DocumentCloud
+Copyright (c) 2009-2012 Jeremy Ashkenas, DocumentCloud
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
diff --git a/docs/underscore.html b/docs/underscore.html
index fffbe9cbb..b4e9f4349 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,12 +1,11 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.3
-(c) 2009-2011 Jeremy Ashkenas, DocumentCloud Inc.
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.4
+(c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
 Oliver Steele's Functional, and John Resig's Micro-Templating.
 For all details and documentation:
 http://documentcloud.github.com/underscore
 </code></pre>             </td>             <td class="code">               <div class="highlight"><pre><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-2">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-2">&#182;</a>               </div>               <h2>Baseline setup</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-3">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-3">&#182;</a>               </div>               <p>Establish the root object, <code>window</code> in the browser, or <code>global</code> on the server.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">root</span> <span class="o">=</span> <span class="k">this</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-4">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-4">&#182;</a>               </div>               <p>Save the previous value of the <code>_</code> variable.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">previousUnderscore</span> <span class="o">=</span> <span class="nx">root</span><span class="p">.</span><span class="nx">_</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               <p>Establish the object that gets returned to break out of a loop iteration.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">breaker</span> <span class="o">=</span> <span class="p">{};</span></pre></div>             </td>           </tr>                               <tr id="section-6">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-6">&#182;</a>               </div>               <p>Save bytes in the minified (but not gzipped) version:</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ArrayProto</span> <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">ObjProto</span> <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">prototype</span><span class="p">,</span> <span class="nx">FuncProto</span> <span class="o">=</span> <span class="nb">Function</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-7">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-7">&#182;</a>               </div>               <p>Create quick reference variables for speed access to core prototypes.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">slice</span>            <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">slice</span><span class="p">,</span>
-      <span class="nx">concat</span>           <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">concat</span><span class="p">,</span>
       <span class="nx">unshift</span>          <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">unshift</span><span class="p">,</span>
       <span class="nx">toString</span>         <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">toString</span><span class="p">,</span>
       <span class="nx">hasOwnProperty</span>   <span class="o">=</span> <span class="nx">ObjProto</span><span class="p">.</span><span class="nx">hasOwnProperty</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-8">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-8">&#182;</a>               </div>               <p>All <strong>ECMAScript 5</strong> native function implementations that we hope to use
@@ -33,7 +32,7 @@ CommonJS, add <code>_</code> to the global object.</p>             </td>
       <span class="k">return</span> <span class="nx">_</span><span class="p">;</span>
     <span class="p">});</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.3&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.4&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -58,6 +57,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">);</span>
     <span class="p">});</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="nx">results</span><span class="p">.</span><span class="nx">length</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
@@ -147,7 +147,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">call</span> <span class="o">?</span> <span class="nx">method</span> <span class="o">||</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
+      <span class="k">return</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">method</span><span class="p">)</span> <span class="o">?</span> <span class="nx">method</span> <span class="o">||</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
@@ -404,7 +404,7 @@ often you call it. Useful for lazy initialization.</p>             </td>
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">concat</span><span class="p">.</span><span class="nx">apply</span><span class="p">([</span><span class="nx">func</span><span class="p">],</span> <span class="nx">arguments</span><span class="p">);</span>
+      <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">0</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
@@ -561,7 +561,9 @@ following template settings to use alternative delimiters.</p>             </td>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">escape</span>      <span class="o">:</span> <span class="sr">/&lt;%-([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>When customizing <code>templateSettings</code>, if you don't want to define an
+interpolation, evaluation or escaping regex, we need one that is
+guaranteed not to match.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">noMatch</span> <span class="o">=</span> <span class="sr">/.^/</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -569,15 +571,16 @@ and correctly escapes quotes within interpolated code.</p>             </td>
       <span class="s1">&#39;with(obj||{}){__p.push(\&#39;&#39;</span> <span class="o">+</span>
       <span class="nx">str</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\/g</span><span class="p">,</span> <span class="s1">&#39;\\\\&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s2">&quot;\\&#39;&quot;</span><span class="p">)</span>
-         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">escape</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">escape</span> <span class="o">||</span> <span class="nx">noMatch</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
            <span class="k">return</span> <span class="s2">&quot;&#39;,_.escape(&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;),&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
-         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">interpolate</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">interpolate</span> <span class="o">||</span> <span class="nx">noMatch</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
            <span class="k">return</span> <span class="s2">&quot;&#39;,&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;,&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
-         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">evaluate</span> <span class="o">||</span> <span class="kc">null</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+         <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">evaluate</span> <span class="o">||</span> <span class="nx">noMatch</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
            <span class="k">return</span> <span class="s2">&quot;&#39;);&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
-                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;;__p.push(&#39;&quot;</span><span class="p">;</span>
+                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span>
+                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\\\/g</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;;__p.push(&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\r/g</span><span class="p">,</span> <span class="s1">&#39;\\r&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/g</span><span class="p">,</span> <span class="s1">&#39;\\n&#39;</span><span class="p">)</span>
@@ -588,31 +591,36 @@ and correctly escapes quotes within interpolated code.</p>             </td>
     <span class="k">return</span> <span class="kd">function</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>Add a "chain" function, which will delegate to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">();</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
-      <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
+      <span class="kd">var</span> <span class="nx">wrapped</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+      <span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
+      <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">wrapped</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+      <span class="k">if</span> <span class="p">((</span><span class="nx">name</span> <span class="o">==</span> <span class="s1">&#39;shift&#39;</span> <span class="o">||</span> <span class="nx">name</span> <span class="o">==</span> <span class="s1">&#39;splice&#39;</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="k">delete</span> <span class="nx">wrapped</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
+      <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-131">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-131">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-132">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-132">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 5ca6c97f9..d1e7d002b 100644
--- a/index.html
+++ b/index.html
@@ -126,11 +126,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.2.3)</a></td>
+        <td><a href="underscore.js">Development Version (1.2.4)</a></td>
         <td><i>34kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.2.3)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.2.4)</a></td>
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -232,7 +232,7 @@ var lyrics = [
   {line : 4, words : "He sleeps all night and he works all day"}
 ];
 
-_(lyrics).chain()
+_.chain(lyrics)
   .map(function(line) { return line.words.split(' '); })
   .flatten()
   .reduce(function(counts, word) {
@@ -958,11 +958,11 @@ _.clone({name : 'moe'});
         The primary purpose of this method is to "tap into" a method chain, in order to perform operations on intermediate results within the chain.
       </p>
       <pre>
-_([1,2,3,200]).chain().
-  filter(function(num) { return num % 2 == 0; }).
-  tap(console.log).
-  map(function(num) { return num * num }).
-  value();
+_.chain([1,2,3,200])
+  .filter(function(num) { return num % 2 == 0; })
+  .tap(console.log)
+  .map(function(num) { return num * num })
+  .value();
 =&gt; [2, 200]
 =&gt; [4, 40000]
 </pre>
@@ -1257,7 +1257,7 @@ template({name : "Mustache"});
       <h2>Chaining</h2>
 
       <p id="chain">
-        <b class="header">chain</b><code>_(obj).chain()</code>
+        <b class="header">chain</b><code>_.chain(obj)</code>
         <br />
         Returns a wrapped object. Calling methods on this object will continue
         to return wrapped objects until <tt>value</tt> is used. (
@@ -1265,7 +1265,7 @@ template({name : "Mustache"});
       </p>
       <pre>
 var stooges = [{name : 'curly', age : 25}, {name : 'moe', age : 21}, {name : 'larry', age : 23}];
-var youngest = _(stooges).chain()
+var youngest = _.chain(stooges)
   .sortBy(function(stooge){ return stooge.age; })
   .map(function(stooge){ return stooge.name + ' is ' + stooge.age; })
   .first()
@@ -1341,6 +1341,28 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.2.4</b> &mdash; <small><i>Jan. 4, 2012</i></small><br />
+        <ul>
+          <li>
+            You now can (and probably should) write <tt>_.chain(list)</tt> 
+            instead of <tt>_(list).chain()</tt>.
+          </li>
+          <li>
+            Fix for escaped characters in Underscore templates, and for supporting
+            customizations of <tt>_.templateSettings</tt> that only define one or
+            two of the required regexes.
+          </li>
+          <li>
+            Fix for passing an array as the first argument to an <tt>_.wrap</tt>'d function.
+          </li>
+          <li>
+            Improved compatibility with ClojureScript, which adds a <tt>call</tt>
+            function to <tt>String.prototype</tt>.
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.2.3</b> &mdash; <small><i>Dec. 7, 2011</i></small><br />
         <ul>
diff --git a/package.json b/package.json
index eda11ad52..b65c188e8 100644
--- a/package.json
+++ b/package.json
@@ -8,5 +8,5 @@
   "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.2.3"
+  "version"       : "1.2.4"
 }
diff --git a/underscore-min.js b/underscore-min.js
index a2a40e4c0..122914e24 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,5 +1,5 @@
-// Underscore.js 1.2.3
-// (c) 2009-2011 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore.js 1.2.4
+// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
@@ -7,24 +7,25 @@
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diff --git a/underscore.js b/underscore.js
index 76e3f7910..c8cd1fd0e 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,5 +1,5 @@
-//     Underscore.js 1.2.3
-//     (c) 2009-2011 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore.js 1.2.4
+//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
 //     Oliver Steele's Functional, and John Resig's Micro-Templating.
@@ -67,7 +67,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.2.3';
+  _.VERSION = '1.2.4';
 
   // Collection Functions
   // --------------------

From 2d5db78c8663875689fd69dbe40fde8f99b56767 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 4 Jan 2012 17:58:42 -0500
Subject: [PATCH 454/533] New Underscore.js website

---
 .gitignore                      |   1 +
 docs/images/background.png      | Bin 0 -> 2108 bytes
 docs/images/bright_squares.png  | Bin 0 -> 41651 bytes
 docs/images/goovepaper.png      | Bin 0 -> 40723 bytes
 docs/images/subtle_freckles.png | Bin 0 -> 14882 bytes
 docs/images/underscore.png      | Bin 0 -> 3643 bytes
 index.html                      | 422 ++++++++++++++++++++------------
 7 files changed, 270 insertions(+), 153 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 docs/images/background.png
 create mode 100644 docs/images/bright_squares.png
 create mode 100644 docs/images/goovepaper.png
 create mode 100644 docs/images/subtle_freckles.png
 create mode 100644 docs/images/underscore.png

diff --git a/.gitignore b/.gitignore
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diff --git a/index.html b/index.html
index d1e7d002b..82ee1d26d 100644
--- a/index.html
+++ b/index.html
@@ -6,37 +6,81 @@
   <title>Underscore.js</title>
   <style>
     body {
-      font-size: 16px;
-      line-height: 24px;
-      background: #f0f0e5;
-      color: #252519;
-      font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif;
+      font-size: 14px;
+      line-height: 22px;
+      background: #f4f4f4 url(docs/images/background.png);
+      color: #000;
+      font-family: Helvetica Neue, Helvetica, Arial;      
     }
+    .interface {
+      font-family: "Lucida Grande", "Lucida Sans Unicode", Helvetica, Arial, sans-serif !important;
+    }
+    div#sidebar {
+      background: #fff;
+      position: fixed;
+      top: 0; left: 0; bottom: 0;
+      width: 200px;
+      overflow-y: auto;
+      overflow-x: hidden;
+      padding: 15px 0 30px 30px;
+      border-right: 1px solid #bbb;
+      box-shadow: 0 0 20px #ccc; -webkit-box-shadow: 0 0 20px #ccc; -moz-box-shadow: 0 0 20px #ccc;
+    }
+    a.toc_title, a.toc_title:visited {
+      display: block;
+      color: black;
+      font-weight: bold;
+      margin-top: 15px;
+    }
+      a.toc_title:hover {
+        text-decoration: underline;
+      }
+      #sidebar .version {
+        font-size: 10px;
+        font-weight: normal;
+      }
+    ul.toc_section {
+      font-size: 11px;
+      line-height: 14px;
+      margin: 5px 0 0 0;
+      padding-left: 0px;
+      list-style-type: none;
+      font-family: Lucida Grande;
+    }
+      .toc_section li {
+        cursor: pointer;
+        margin: 0 0 3px 0;
+      }
+        .toc_section li a {
+          text-decoration: none;
+          color: black;
+        }
+          .toc_section li a:hover {
+            text-decoration: underline;
+          }  
     div.container {
-      width: 720px;
-      margin: 50px 0 50px 50px;
+      width: 550px;
+      margin: 40px 0 50px 260px;
     }
     p {
+      margin: 20px 0;
       width: 550px;
     }
-      #documentation p {
-        margin-bottom: 4px;
-      }
     a, a:visited {
-      padding: 0 2px;
-      text-decoration: none;
-      background: #dadaba;
-      color: #252519;
+      color: #444;
     }
     a:active, a:hover {
       color: #000;
-      background: #f0c095;
     }
     h1, h2, h3, h4, h5, h6 {
-      margin-top: 40px;
+      padding-top: 20px;
     }
+      h2 {
+        font-size: 20px;
+      }
     b.header {
-      font-size: 18px;
+      font-size: 16px;
+      line-height: 30px;
     }
     span.alias {
       font-size: 14px;
@@ -57,28 +101,168 @@
         width: 500px;
         margin-bottom: 10px;
       }
-    code, pre, tt {
-      font-family: Monaco, Consolas, "Lucida Console", monospace;
-      font-size: 12px;
-      line-height: 18px;
-      color: #555529;
-    }
-      code {
-        margin-left: 20px;
-      }
-      pre {
+      code, pre, tt {
+        font-family: Monaco, Consolas, "Lucida Console", monospace;
         font-size: 12px;
-        padding: 2px 0 2px 12px;
-        border-left: 6px solid #aaaa99;
-        margin: 0px 0 30px;
+        line-height: 18px;
+        font-style: normal;
       }
+        tt {
+          padding: 0px 3px;
+          background: #fff;
+          border: 1px solid #ddd;
+          zoom: 1;
+        }
+        code {
+          margin-left: 20px;
+        }
+        pre {
+          font-size: 12px;
+          padding: 2px 0 2px 15px;
+          border-left: 5px solid #bbb;
+          margin: 0px 0 30px;
+        }
   </style>
 </head>
 <body>
+  
+  <div id="sidebar" class="interface">
+
+    <a class="toc_title" href="#">
+      Underscore.js <span class="version">(1.2.4)</span>
+    </a>
+    
+    <a class="toc_title" href="#">
+      Introduction
+    </a>
+
+    <a class="toc_title" href="#collections">
+      Collections
+    </a>
+    <ul class="toc_section">
+      <li>- <a href="#each">each</a></li>
+      <li>- <a href="#map">map</a></li>
+      <li>- <a href="#reduce">reduce</a></li>
+      <li>- <a href="#reduceRight">reduceRight</a></li>
+      <li>- <a href="#find">find</a></li>
+      <li>- <a href="#filter">filter</a></li>
+      <li>- <a href="#reject">reject</a></li>
+      <li>- <a href="#all">all</a></li>
+      <li>- <a href="#any">any</a></li>
+      <li>- <a href="#include">include</a></li>
+      <li>- <a href="#invoke">invoke</a></li>
+      <li>- <a href="#pluck">pluck</a></li>
+      <li>- <a href="#max">max</a></li>
+      <li>- <a href="#min">min</a></li>
+      <li>- <a href="#sortBy">sortBy</a></li>
+      <li>- <a href="#groupBy">groupBy</a></li>
+      <li>- <a href="#sortedIndex">sortedIndex</a></li>
+      <li>- <a href="#shuffle">shuffle</a></li>
+      <li>- <a href="#toArray">toArray</a></li>
+      <li>- <a href="#size">size</a></li>
+    </ul>
+
+    <a class="toc_title" href="#arrays">
+      Arrays
+    </a>
+    <ul class="toc_section">
+      <li>- <a href="#first">first</a></li>
+      <li>- <a href="#initial">initial</a></li>
+      <li>- <a href="#last">last</a></li>
+      <li>- <a href="#rest">rest</a></li>
+      <li>- <a href="#compact">compact</a></li>
+      <li>- <a href="#flatten">flatten</a></li>
+      <li>- <a href="#without">without</a></li>
+      <li>- <a href="#union">union</a></li>
+      <li>- <a href="#intersection">intersection</a></li>
+      <li>- <a href="#difference">difference</a></li>
+      <li>- <a href="#uniq">uniq</a></li>
+      <li>- <a href="#zip">zip</a></li>
+      <li>- <a href="#indexOf">indexOf</a></li>
+      <li>- <a href="#lastIndexOf">lastIndexOf</a></li>
+      <li>- <a href="#range">range</a></li>
+    </ul>
+
+    <a class="toc_title" href="#functions">
+      Functions
+    </a>
+    <ul class="toc_section">
+      <li>- <a href="#bind">bind</a></li>
+      <li>- <a href="#bindAll">bindAll</a></li>
+      <li>- <a href="#memoize">memoize</a></li>
+      <li>- <a href="#delay">delay</a></li>
+      <li>- <a href="#defer">defer</a></li>
+      <li>- <a href="#throttle">throttle</a></li>
+      <li>- <a href="#debounce">debounce</a></li>
+      <li>- <a href="#once">once</a></li>
+      <li>- <a href="#after">after</a></li>
+      <li>- <a href="#wrap">wrap</a></li>
+      <li>- <a href="#compose">compose</a></li>
+    </ul>
+
+    <a class="toc_title" href="#objects">
+      Objects
+    </a>
+    <ul class="toc_section">
+      <li>- <a href="#keys">keys</a></li>
+      <li>- <a href="#values">values</a></li>
+      <li>- <a href="#functions">functions</a></li>
+      <li>- <a href="#extend">extend</a></li>
+      <li>- <a href="#defaults">defaults</a></li>
+      <li>- <a href="#clone">clone</a></li>
+      <li>- <a href="#tap">tap</a></li>
+      <li>- <a href="#isEqual">isEqual</a></li>
+      <li>- <a href="#isEmpty">isEmpty</a></li>
+      <li>- <a href="#isElement">isElement</a></li>
+      <li>- <a href="#isArray">isArray</a></li>
+      <li>- <a href="#isArguments">isArguments</a></li>
+      <li>- <a href="#isFunction">isFunction</a></li>
+      <li>- <a href="#isString">isString</a></li>
+      <li>- <a href="#isNumber">isNumber</a></li>
+      <li>- <a href="#isBoolean">isBoolean</a></li>
+      <li>- <a href="#isDate">isDate</a></li>
+      <li>- <a href="#isRegExp">isRegExp</a></li>
+      <li>- <a href="#isNaN">isNaN</a></li>
+      <li>- <a href="#isNull">isNull</a></li>
+      <li>- <a href="#isUndefined">isUndefined</a></li>
+    </ul>
+
+    <a class="toc_title" href="#utility">
+      Utility
+    </a>    
+    <ul class="toc_section">
+      <li>- <a href="#noConflict">noConflict</a></li>
+      <li>- <a href="#identity">identity</a></li>
+      <li>- <a href="#times">times</a></li>
+      <li>- <a href="#mixin">mixin</a></li>
+      <li>- <a href="#uniqueId">uniqueId</a></li>
+      <li>- <a href="#escape">escape</a></li>
+      <li>- <a href="#template">template</a></li>
+    </ul>
+
+    <a class="toc_title" href="#chaining">
+      Chaining
+    </a>
+    <ul class="toc_section">
+      <li>- <a href="#chain">chain</a></li>
+      <li>- <a href="#value">value</a></li>
+    </ul>
+    
+    <a class="toc_title" href="#links">
+      Links
+    </a>
+    
+    <a class="toc_title" href="#changelog">
+      Change Log
+    </a>
+    
+  </div>
 
   <div class="container">
 
-    <h1>Underscore.js</h1>
+    <p id="introduction">
+      <img style="width: 396px; height: 69px;" src="docs/images/underscore.png" alt="Underscore.js" />
+    </p>
 
     <p>
       <a href="http://github.com/documentcloud/underscore/">Underscore</a> is a
@@ -135,122 +319,9 @@
       </tr>
     </table>
 
-    <h2>Table of Contents</h2>
-    
-    <a href="#styles">Object-Oriented and Functional Styles</a>
-
-    <p>
-      <b>Collections</b>
-      <br />
-      <span class="methods"><a href="#each">each</a>, <a href="#map">map</a>,
-      <a href="#reduce">reduce</a>, <a href="#reduceRight">reduceRight</a>,
-      <a href="#find">find</a>, <a href="#filter">filter</a>,
-      <a href="#reject">reject</a>, <a href="#all">all</a>,
-      <a href="#any">any</a>, <a href="#include">include</a>,
-      <a href="#invoke">invoke</a>, <a href="#pluck">pluck</a>,
-      <a href="#max">max</a>, <a href="#min">min</a>,
-      <a href="#sortBy">sortBy</a>, <a href="#groupBy">groupBy</a>,
-      <a href="#sortedIndex">sortedIndex</a>, <a href="#shuffle">shuffle</a>,
-      <a href="#toArray">toArray</a>, <a href="#size">size</a></span>
-    </p>
-
-    <p>
-      <b>Arrays</b>
-      <br />
-      <span class="methods"><a href="#first">first</a>, <a href="#initial">initial</a>, <a href="#last">last</a>, <a href="#rest">rest</a>,
-      <a href="#compact">compact</a>, <a href="#flatten">flatten</a>, <a href="#without">without</a>, 
-      <a href="#union">union</a>, <a href="#intersection">intersection</a>, <a href="#difference">difference</a>,
-      <a href="#uniq">uniq</a>, <a href="#zip">zip</a>, <a href="#indexOf">indexOf</a>,
-      <a href="#lastIndexOf">lastIndexOf</a>, <a href="#range">range</a></span>
-    </p>
-
-    <p>
-      <b>Functions</b>
-      <br />
-      <span class="methods"><a href="#bind">bind</a>, <a href="#bindAll">bindAll</a>, 
-      <a href="#memoize">memoize</a>, <a href="#delay">delay</a>, <a href="#defer">defer</a>, 
-      <a href="#throttle">throttle</a>, <a href="#debounce">debounce</a>, 
-      <a href="#once">once</a>, <a href="#after">after</a>, <a href="#wrap">wrap</a>, <a href="#compose">compose</a></span>
-    </p>
-
-    <p>
-      <b>Objects</b>
-      <br />
-      <span class="methods"><a href="#keys">keys</a>, <a href="#values">values</a>,
-      <a href="#functions">functions</a>, <a href="#extend">extend</a>, <a href="#defaults">defaults</a>, <a href="#clone">clone</a>, <a href="#tap">tap</a>,
-      <a href="#isEqual">isEqual</a>, <a href="#isEmpty">isEmpty</a>, <a href="#isElement">isElement</a>,
-      <a href="#isArray">isArray</a>, <a href="#isArguments">isArguments</a>, <a href="#isFunction">isFunction</a>, <a href="#isString">isString</a>,
-      <a href="#isNumber">isNumber</a>, <a href="#isBoolean">isBoolean</a>, <a href="#isDate">isDate</a>, <a href="#isRegExp">isRegExp</a>,
-      <a href="#isNaN">isNaN</a>, <a href="#isNull">isNull</a>,
-      <a href="#isUndefined">isUndefined</a>
-      </span>
-    </p>
-
-    <p>
-      <b>Utility</b>
-      <br />
-      <span class="methods"><a href="#noConflict">noConflict</a>,
-      <a href="#identity">identity</a>, <a href="#times">times</a>, 
-      <a href="#mixin">mixin</a>, <a href="#uniqueId">uniqueId</a>, 
-      <a href="#escape">escape</a>, <a href="#template">template</a></span>
-    </p>
-
-    <p>
-      <b>Chaining</b>
-      <br />
-      <span class="methods"><a href="#chain">chain</a>, <a href="#value">value</a>
-    </p>
-
     <div id="documentation">
-      
-      <h2 id="styles">Object-Oriented and Functional Styles</h2>
 
-      <p>
-        You can use Underscore in either an object-oriented or a functional style,
-        depending on your preference. The following two lines of code are
-        identical ways to double a list of numbers.
-      </p>
-
-    <pre>
-_.map([1, 2, 3], function(n){ return n * 2; });
-_([1, 2, 3]).map(function(n){ return n * 2; });</pre>
-
-      <p>
-        Using the object-oriented style allows you to chain together methods. Calling
-        <tt>chain</tt> on a wrapped object will cause all future method calls to
-        return wrapped objects as well. When you've finished the computation,
-        use <tt>value</tt> to retrieve the final value. Here's an example of chaining
-        together a <b>map/flatten/reduce</b>, in order to get the word count of
-        every word in a song.
-      </p>
-
-<pre>
-var lyrics = [
-  {line : 1, words : "I'm a lumberjack and I'm okay"},
-  {line : 2, words : "I sleep all night and I work all day"},
-  {line : 3, words : "He's a lumberjack and he's okay"},
-  {line : 4, words : "He sleeps all night and he works all day"}
-];
-
-_.chain(lyrics)
-  .map(function(line) { return line.words.split(' '); })
-  .flatten()
-  .reduce(function(counts, word) {
-    counts[word] = (counts[word] || 0) + 1;
-    return counts;
-}, {}).value();
-
-=&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
-
-      <p>
-        In addition, the
-        <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/prototype">Array prototype's methods</a>
-        are proxied through the chained Underscore object, so you can slip a
-        <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to
-        modify the array.
-      </p>
-
-      <h2>Collection Functions (Arrays or Objects)</h2>
+      <h2 id="collections">Collection Functions (Arrays or Objects)</h2>
 
       <p id="each">
         <b class="header">each</b><code>_.each(list, iterator, [context])</code>
@@ -511,7 +582,7 @@ _.size({one : 1, two : 2, three : 3});
 =&gt; 3
 </pre>
 
-      <h2>Array Functions</h2>
+      <h2 id="arrays">Array Functions</h2>
 
       <p>
         <i>Note: All array functions will also work on the <b>arguments</b> object.</i>
@@ -707,7 +778,7 @@ _.range(0);
 =&gt; []
 </pre>
 
-      <h2>Function (uh, ahem) Functions</h2>
+      <h2 id="functions">Function (uh, ahem) Functions</h2>
 
       <p id="bind">
         <b class="header">bind</b><code>_.bind(function, object, [*arguments])</code>
@@ -881,7 +952,7 @@ welcome('moe');
 =&gt; 'hi: moe!'
 </pre>
 
-      <h2>Object Functions</h2>
+      <h2 id="objects">Object Functions</h2>
 
       <p id="keys">
         <b class="header">keys</b><code>_.keys(object)</code>
@@ -1126,7 +1197,7 @@ _.isUndefined(window.missingVariable);
 =&gt; true
 </pre>
 
-      <h2>Utility Functions</h2>
+      <h2 id="utility">Utility Functions</h2>
 
       <p id="noConflict">
         <b class="header">noConflict</b><code>_.noConflict()</code>
@@ -1254,14 +1325,59 @@ var template = _.template("Hello {{ name }}!");
 template({name : "Mustache"});
 =&gt; "Hello Mustache!"</pre>
 
-      <h2>Chaining</h2>
+
+      <h2 id="chaining">Chaining</h2>
+
+      <p>
+        You can use Underscore in either an object-oriented or a functional style,
+        depending on your preference. The following two lines of code are
+        identical ways to double a list of numbers.
+      </p>
+
+    <pre>
+_.map([1, 2, 3], function(n){ return n * 2; });
+_([1, 2, 3]).map(function(n){ return n * 2; });</pre>
+
+      <p>
+        Using the object-oriented style allows you to chain together methods. Calling
+        <tt>chain</tt> on a wrapped object will cause all future method calls to
+        return wrapped objects as well. When you've finished the computation,
+        use <tt>value</tt> to retrieve the final value. Here's an example of chaining
+        together a <b>map/flatten/reduce</b>, in order to get the word count of
+        every word in a song.
+      </p>
+
+<pre>
+var lyrics = [
+  {line : 1, words : "I'm a lumberjack and I'm okay"},
+  {line : 2, words : "I sleep all night and I work all day"},
+  {line : 3, words : "He's a lumberjack and he's okay"},
+  {line : 4, words : "He sleeps all night and he works all day"}
+];
+
+_.chain(lyrics)
+  .map(function(line) { return line.words.split(' '); })
+  .flatten()
+  .reduce(function(counts, word) {
+    counts[word] = (counts[word] || 0) + 1;
+    return counts;
+}, {}).value();
+
+=&gt; {lumberjack : 2, all : 4, night : 2 ... }</pre>
+
+      <p>
+        In addition, the
+        <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/prototype">Array prototype's methods</a>
+        are proxied through the chained Underscore object, so you can slip a
+        <tt>reverse</tt> or a <tt>push</tt> into your chain, and continue to
+        modify the array.
+      </p>
 
       <p id="chain">
         <b class="header">chain</b><code>_.chain(obj)</code>
         <br />
         Returns a wrapped object. Calling methods on this object will continue
-        to return wrapped objects until <tt>value</tt> is used. (
-        <a href="#styles">A more realistic example.</a>)
+        to return wrapped objects until <tt>value</tt> is used.
       </p>
       <pre>
 var stooges = [{name : 'curly', age : 25}, {name : 'moe', age : 21}, {name : 'larry', age : 23}];
@@ -1283,7 +1399,7 @@ _([1, 2, 3]).value();
 =&gt; [1, 2, 3]
 </pre>
 
-      <h2>Links &amp; Suggested Reading</h2>
+      <h2 id="links">Links &amp; Suggested Reading</h2>
 
       <p>
         <a href="http://mirven.github.com/underscore.lua/">Underscore.lua</a>,

From c84968ba6af0333d07e37ea022a45494eed7a1b8 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 4 Jan 2012 17:59:14 -0500
Subject: [PATCH 455/533] New Underscore.js website (sans extra images)

---
 docs/images/bright_squares.png  | Bin 41651 -> 0 bytes
 docs/images/goovepaper.png      | Bin 40723 -> 0 bytes
 docs/images/subtle_freckles.png | Bin 14882 -> 0 bytes
 3 files changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 docs/images/bright_squares.png
 delete mode 100644 docs/images/goovepaper.png
 delete mode 100644 docs/images/subtle_freckles.png

diff --git a/docs/images/bright_squares.png b/docs/images/bright_squares.png
deleted file mode 100644
index c75a05a94234f8621b526a57d85e2d02da01c28d..0000000000000000000000000000000000000000
GIT binary patch
literal 0
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From 0ee09ff97ff2fdee6e2d375ca47cfa52785abafe Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 4 Jan 2012 18:04:00 -0500
Subject: [PATCH 456/533] fixing an orphan in the first graf

---
 index.html | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 82ee1d26d..ebcb46603 100644
--- a/index.html
+++ b/index.html
@@ -271,7 +271,8 @@
       <a href="http://prototypejs.org/api">Prototype.js</a>
       (or <a href="http://www.ruby-doc.org/core/classes/Enumerable.html">Ruby</a>),
       but without extending any of the built-in JavaScript objects. It's the
-      tie to go along with <a href="http://docs.jquery.com">jQuery</a>'s tux.
+      tie to go along with <a href="http://docs.jquery.com">jQuery</a>'s tux,
+      and <a href="http://backbonejs.org">Backbone.js</a>'s suspenders.
     </p>
 
     <p>

From d85490fbbbeee82a806f0a665ba6a33afe1918a5 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Thu, 5 Jan 2012 15:17:11 -0500
Subject: [PATCH 457/533] adding CNAME for underscorejs.org

---
 CNAME | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 CNAME

diff --git a/CNAME b/CNAME
new file mode 100644
index 000000000..a007e65c4
--- /dev/null
+++ b/CNAME
@@ -0,0 +1 @@
+underscorejs.org

From ce01895ab17ae8d31fd7647225371206cbee1dc3 Mon Sep 17 00:00:00 2001
From: Ryunosuke SATO <tricknotes.rs@gmail.com>
Date: Sat, 7 Jan 2012 13:30:24 +0900
Subject: [PATCH 458/533] remove `dependencies` from package.json

---
 package.json | 1 -
 1 file changed, 1 deletion(-)

diff --git a/package.json b/package.json
index b65c188e8..d9dcd93ad 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,6 @@
   "keywords"      : ["util", "functional", "server", "client", "browser"],
   "author"        : "Jeremy Ashkenas <jeremy@documentcloud.org>",
   "contributors"  : [],
-  "dependencies"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
   "version"       : "1.2.4"

From 38b78e4e5235844e01b5e1d7a623423040b12abc Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 9 Jan 2012 12:19:20 -0500
Subject: [PATCH 459/533] fixing README for github

---
 README | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/README b/README
index 408145aab..ba19f1d70 100644
--- a/README
+++ b/README
@@ -1,14 +1,14 @@
-                   __                                                         
-                  /\ \                                                         __           
- __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __       /\_\    ____  
-/\ \/\ \ /' _ `\  /'_  \  /'__`\/\  __\/ ,__\  / ___\ / __`\/\  __\/'__`\     \/\ \  /',__\ 
-\ \ \_\ \/\ \/\ \/\ \ \ \/\  __/\ \ \//\__, `\/\ \__//\ \ \ \ \ \//\  __/  __  \ \ \/\__, `\
- \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\/\_\ _\ \ \/\____/
-  \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/\/_//\ \_\ \/___/ 
-                                                                              \ \____/      
-                                                                               \/___/
+                   __                                                      
+                  /\ \                                                     
+ __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __    
+/\ \/\ \ /' _ `\  /'_  \  /'__`\/\  __\/ ,__\  / ___\ / __`\/\  __\/'__`\  
+\ \ \_\ \/\ \/\ \/\ \ \ \/\  __/\ \ \//\__, `\/\ \__//\ \ \ \ \ \//\  __/  
+ \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\
+  \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/
+                                                                           
+                                                                           
 
-Underscore is a utility-belt library for JavaScript that provides 
+Underscore.js is a utility-belt library for JavaScript that provides 
 support for the usual functional suspects (each, map, reduce, filter...) 
 without extending any core JavaScript objects.
 

From c1b62d7ea11347bc1057e05dcb7f62a77183e47b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 9 Jan 2012 15:39:10 -0500
Subject: [PATCH 460/533] Revert "New Underscore.js website (sans extra
 images)"

This reverts commit c84968ba6af0333d07e37ea022a45494eed7a1b8.
---
 docs/images/bright_squares.png  | Bin 0 -> 41651 bytes
 docs/images/goovepaper.png      | Bin 0 -> 40723 bytes
 docs/images/subtle_freckles.png | Bin 0 -> 14882 bytes
 3 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 docs/images/bright_squares.png
 create mode 100644 docs/images/goovepaper.png
 create mode 100644 docs/images/subtle_freckles.png

diff --git a/docs/images/bright_squares.png b/docs/images/bright_squares.png
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From 0b74f2d665278c431a49271d0863a0caad5e1b81 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 9 Jan 2012 15:40:43 -0500
Subject: [PATCH 461/533] Revert "Revert "New Underscore.js website (sans extra
 images)""

This reverts commit c1b62d7ea11347bc1057e05dcb7f62a77183e47b.
---
 docs/images/bright_squares.png  | Bin 41651 -> 0 bytes
 docs/images/goovepaper.png      | Bin 40723 -> 0 bytes
 docs/images/subtle_freckles.png | Bin 14882 -> 0 bytes
 3 files changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 docs/images/bright_squares.png
 delete mode 100644 docs/images/goovepaper.png
 delete mode 100644 docs/images/subtle_freckles.png

diff --git a/docs/images/bright_squares.png b/docs/images/bright_squares.png
deleted file mode 100644
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From 0d4b1247c45083c695cab4242c084a97aa600221 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 11 Jan 2012 11:17:40 -0500
Subject: [PATCH 462/533] Removing AMD 'support' from Underscore.

---
 underscore.js | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/underscore.js b/underscore.js
index c8cd1fd0e..0d078a6a7 100644
--- a/underscore.js
+++ b/underscore.js
@@ -48,21 +48,16 @@
   // Create a safe reference to the Underscore object for use below.
   var _ = function(obj) { return new wrapper(obj); };
 
-  // Export the Underscore object for **Node.js** and **"CommonJS"**, with
-  // backwards-compatibility for the old `require()` API. If we're not in
-  // CommonJS, add `_` to the global object.
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
   if (typeof exports !== 'undefined') {
     if (typeof module !== 'undefined' && module.exports) {
       exports = module.exports = _;
     }
     exports._ = _;
-  } else if (typeof define === 'function' && define.amd) {
-    // Register as a named module with AMD.
-    define('underscore', function() {
-      return _;
-    });
   } else {
-    // Exported as a string, for Closure Compiler "advanced" mode.
     root['_'] = _;
   }
 

From dd09162b8c216f3fd09dfc85446df420962c7376 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Wed, 11 Jan 2012 11:41:14 -0500
Subject: [PATCH 463/533] Underscore.js 1.3.0

---
 README               |  19 ----
 README.md            |  19 ++++
 docs/underscore.html | 219 +++++++++++++++++++++----------------------
 index.html           |  24 ++++-
 package.json         |   2 +-
 underscore-min.js    |  46 ++++-----
 underscore.js        |   4 +-
 7 files changed, 175 insertions(+), 158 deletions(-)
 delete mode 100644 README
 create mode 100644 README.md

diff --git a/README b/README
deleted file mode 100644
index ba19f1d70..000000000
--- a/README
+++ /dev/null
@@ -1,19 +0,0 @@
-                   __                                                      
-                  /\ \                                                     
- __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __    
-/\ \/\ \ /' _ `\  /'_  \  /'__`\/\  __\/ ,__\  / ___\ / __`\/\  __\/'__`\  
-\ \ \_\ \/\ \/\ \/\ \ \ \/\  __/\ \ \//\__, `\/\ \__//\ \ \ \ \ \//\  __/  
- \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\
-  \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/
-                                                                           
-                                                                           
-
-Underscore.js is a utility-belt library for JavaScript that provides 
-support for the usual functional suspects (each, map, reduce, filter...) 
-without extending any core JavaScript objects.
-
-For Docs, License, Tests, and pre-packed downloads, see:
-http://documentcloud.github.com/underscore/
-
-Many thanks to our contributors:
-https://github.com/documentcloud/underscore/contributors
diff --git a/README.md b/README.md
new file mode 100644
index 000000000..a6564a2a2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+                       __                                                         
+                      /\ \                                                         __           
+     __  __    ___    \_\ \     __   _ __   ____    ___    ___   _ __    __       /\_\    ____  
+    /\ \/\ \ /' _ `\  /'_  \  /'__`\/\  __\/ ,__\  / ___\ / __`\/\  __\/'__`\     \/\ \  /',__\ 
+    \ \ \_\ \/\ \/\ \/\ \ \ \/\  __/\ \ \//\__, `\/\ \__//\ \ \ \ \ \//\  __/  __  \ \ \/\__, `\
+     \ \____/\ \_\ \_\ \___,_\ \____\\ \_\\/\____/\ \____\ \____/\ \_\\ \____\/\_\ _\ \ \/\____/
+      \/___/  \/_/\/_/\/__,_ /\/____/ \/_/ \/___/  \/____/\/___/  \/_/ \/____/\/_//\ \_\ \/___/ 
+                                                                                  \ \____/      
+                                                                                   \/___/
+                                                                               
+Underscore.js is a utility-belt library for JavaScript that provides 
+support for the usual functional suspects (each, map, reduce, filter...) 
+without extending any core JavaScript objects.
+
+For Docs, License, Tests, and pre-packed downloads, see:
+http://documentcloud.github.com/underscore/
+
+Many thanks to our contributors:
+https://github.com/documentcloud/underscore/contributors
diff --git a/docs/underscore.html b/docs/underscore.html
index b4e9f4349..c92a32016 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.2.4
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.0
 (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -21,18 +21,17 @@ are declared here.</p>             </td>             <td class="code">
     <span class="nx">nativeLastIndexOf</span>  <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">,</span>
     <span class="nx">nativeIsArray</span>      <span class="o">=</span> <span class="nb">Array</span><span class="p">.</span><span class="nx">isArray</span><span class="p">,</span>
     <span class="nx">nativeKeys</span>         <span class="o">=</span> <span class="nb">Object</span><span class="p">.</span><span class="nx">keys</span><span class="p">,</span>
-    <span class="nx">nativeBind</span>         <span class="o">=</span> <span class="nx">FuncProto</span><span class="p">.</span><span class="nx">bind</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>Node.js</strong> and <strong>"CommonJS"</strong>, with
-backwards-compatibility for the old <code>require()</code> API. If we're not in
-CommonJS, add <code>_</code> to the global object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="p">{</span>
+    <span class="nx">nativeBind</span>         <span class="o">=</span> <span class="nx">FuncProto</span><span class="p">.</span><span class="nx">bind</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-9">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-9">&#182;</a>               </div>               <p>Create a safe reference to the Underscore object for use below.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">_</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="k">new</span> <span class="nx">wrapper</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-10">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-10">&#182;</a>               </div>               <p>Export the Underscore object for <strong>Node.js</strong>, with
+backwards-compatibility for the old <code>require()</code> API. If we're in
+the browser, add <code>_</code> as a global object via a string identifier,
+for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">exports</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">module</span> <span class="o">!==</span> <span class="s1">&#39;undefined&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span><span class="p">)</span> <span class="p">{</span>
       <span class="nx">exports</span> <span class="o">=</span> <span class="nx">module</span><span class="p">.</span><span class="nx">exports</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">define</span> <span class="o">===</span> <span class="s1">&#39;function&#39;</span> <span class="o">&amp;&amp;</span> <span class="nx">define</span><span class="p">.</span><span class="nx">amd</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Register as a named module with AMD.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">define</span><span class="p">(</span><span class="s1">&#39;underscore&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="nx">_</span><span class="p">;</span>
-    <span class="p">});</span>
-  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <p>Exported as a string, for Closure Compiler "advanced" mode.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.2.4&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
+    <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.3.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -49,7 +48,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if avai
         <span class="p">}</span>
       <span class="p">}</span>
     <span class="p">}</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
@@ -59,7 +58,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if availabl
     <span class="p">});</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="o">+</span><span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">)</span> <span class="nx">results</span><span class="p">.</span><span class="nx">length</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-15">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-15">&#182;</a>               </div>               <p><strong>Reduce</strong> builds up a single result from a list of values, aka <code>inject</code>,
 or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code>reduce</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldl</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">inject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&gt;</span> <span class="mi">2</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
@@ -77,7 +76,7 @@ or <code>foldl</code>. Delegates to <strong>ECMAScript 5</strong>'s native <code
     <span class="p">});</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Reduce of empty array with no initial value&#39;</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-16">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-16">&#182;</a>               </div>               <p>The right-associative version of reduce, also known as <code>foldr</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reduceRight</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">foldr</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&gt;</span> <span class="mi">2</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span> <span class="o">=</span> <span class="p">[];</span>
@@ -88,7 +87,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
     <span class="kd">var</span> <span class="nx">reversed</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">reverse</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">context</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">initial</span><span class="p">)</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">initial</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">memo</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">reversed</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-17">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-17">&#182;</a>               </div>               <p>Return the first value which passes a truth test. Aliased as <code>detect</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">find</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">detect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span><span class="p">;</span>
     <span class="nx">any</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="p">{</span>
@@ -97,7 +96,7 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>reduceRight</code> if
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-18">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-18">&#182;</a>               </div>               <p>Return all the elements that pass a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>filter</code> if available.
 Aliased as <code>select</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">select</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
@@ -107,14 +106,14 @@ Aliased as <code>select</code>.</p>             </td>             <td class="cod
       <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-19">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-19">&#182;</a>               </div>               <p>Return all the elements for which a truth test fails.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">reject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">))</span> <span class="nx">results</span><span class="p">[</span><span class="nx">results</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-20">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-20">&#182;</a>               </div>               <p>Determine whether all of the elements match a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>every</code> if available.
 Aliased as <code>all</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">every</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">all</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
@@ -124,7 +123,7 @@ Aliased as <code>all</code>.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">result</span> <span class="o">&amp;&amp;</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-21">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-21">&#182;</a>               </div>               <p>Determine if at least one element in the object matches a truth test.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>some</code> if available.
 Aliased as <code>any</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">any</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">some</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">any</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
@@ -135,7 +134,7 @@ Aliased as <code>any</code>.</p>             </td>             <td class="code">
       <span class="k">if</span> <span class="p">(</span><span class="nx">result</span> <span class="o">||</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)))</span> <span class="k">return</span> <span class="nx">breaker</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="o">!!</span><span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-22">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-22">&#182;</a>               </div>               <p>Determine if a given value is included in the array or object using <code>===</code>.
 Aliased as <code>contains</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">include</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">contains</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">target</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">found</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
@@ -144,14 +143,14 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="k">return</span> <span class="nx">value</span> <span class="o">===</span> <span class="nx">target</span><span class="p">;</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">found</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-23">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-23">&#182;</a>               </div>               <p>Invoke a method (with arguments) on every item in a collection.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">invoke</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">method</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">method</span><span class="p">)</span> <span class="o">?</span> <span class="nx">method</span> <span class="o">||</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">[</span><span class="nx">method</span><span class="p">]).</span><span class="nx">apply</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-24">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-24">&#182;</a>               </div>               <p>Convenience version of a common use case of <code>map</code>: fetching a property.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="nx">value</span><span class="p">[</span><span class="nx">key</span><span class="p">];</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-25">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-25">&#182;</a>               </div>               <p>Return the maximum element or (element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">max</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="o">-</span><span class="kc">Infinity</span><span class="p">};</span>
@@ -160,7 +159,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&gt;=</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-26">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-26">&#182;</a>               </div>               <p>Return the minimum element (or element-based computation).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">min</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">min</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nb">Math</span><span class="p">,</span> <span class="nx">obj</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterator</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="kc">Infinity</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">computed</span> <span class="o">:</span> <span class="kc">Infinity</span><span class="p">};</span>
@@ -169,7 +168,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="nx">computed</span> <span class="o">&lt;</span> <span class="nx">result</span><span class="p">.</span><span class="nx">computed</span> <span class="o">&amp;&amp;</span> <span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="p">{</span><span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span> <span class="nx">computed</span> <span class="o">:</span> <span class="nx">computed</span><span class="p">});</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">.</span><span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Shuffle an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">shuffle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-27">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-27">&#182;</a>               </div>               <p>Shuffle an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">shuffle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">shuffled</span> <span class="o">=</span> <span class="p">[],</span> <span class="nx">rand</span><span class="p">;</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
@@ -181,7 +180,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">shuffled</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-28">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-28">&#182;</a>               </div>               <p>Sort the object's values by a criterion produced by an iterator.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">list</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="p">{</span>
         <span class="nx">value</span> <span class="o">:</span> <span class="nx">value</span><span class="p">,</span>
@@ -191,7 +190,7 @@ Aliased as <code>contains</code>.</p>             </td>             <td class="c
       <span class="kd">var</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">left</span><span class="p">.</span><span class="nx">criteria</span><span class="p">,</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">right</span><span class="p">.</span><span class="nx">criteria</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">a</span> <span class="o">&lt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">&gt;</span> <span class="nx">b</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="mi">0</span><span class="p">;</span>
     <span class="p">}),</span> <span class="s1">&#39;value&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Groups the object's values by a criterion. Pass either a string attribute
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-29">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-29">&#182;</a>               </div>               <p>Groups the object's values by a criterion. Pass either a string attribute
 to group by, or a function that returns the criterion.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">groupBy</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">val</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="kd">var</span> <span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">val</span><span class="p">)</span> <span class="o">?</span> <span class="nx">val</span> <span class="o">:</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">val</span><span class="p">];</span> <span class="p">};</span>
@@ -200,7 +199,7 @@ to group by, or a function that returns the criterion.</p>             </td>
       <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">||</span> <span class="p">(</span><span class="nx">result</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">[])).</span><span class="nx">push</span><span class="p">(</span><span class="nx">value</span><span class="p">);</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-30">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-30">&#182;</a>               </div>               <p>Use a comparator function to figure out at what index an object should
 be inserted so as to maintain order. Uses binary search.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">sortedIndex</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">iterator</span> <span class="o">||</span> <span class="p">(</span><span class="nx">iterator</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">low</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
@@ -209,46 +208,46 @@ be inserted so as to maintain order. Uses binary search.</p>             </td>
       <span class="nx">iterator</span><span class="p">(</span><span class="nx">array</span><span class="p">[</span><span class="nx">mid</span><span class="p">])</span> <span class="o">&lt;</span> <span class="nx">iterator</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">low</span> <span class="o">=</span> <span class="nx">mid</span> <span class="o">+</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">high</span> <span class="o">=</span> <span class="nx">mid</span><span class="p">;</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">low</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-31">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-31">&#182;</a>               </div>               <p>Safely convert anything iterable into a real, live array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">iterable</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">iterable</span><span class="p">)</span>                <span class="k">return</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">)</span>         <span class="k">return</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">toArray</span><span class="p">();</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>      <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">iterable</span><span class="p">))</span>  <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">values</span><span class="p">(</span><span class="nx">iterable</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-32">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-32">&#182;</a>               </div>               <p>Return the number of elements in an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">size</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">toArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">length</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-33">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-33">&#182;</a>               </div>               <h2>Array Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-34">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-34">&#182;</a>               </div>               <p>Get the first element of an array. Passing <strong>n</strong> will return the first N
 values in the array. Aliased as <code>head</code>. The <strong>guard</strong> check allows it to work
 with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">first</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">head</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span> <span class="o">?</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">n</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Returns everything but the last entry of the array. Especcialy useful on
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-35">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-35">&#182;</a>               </div>               <p>Returns everything but the last entry of the array. Especcialy useful on
 the arguments object. Passing <strong>n</strong> will return all the values in
 the array, excluding the last N. The <strong>guard</strong> check allows it to work with
 <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">initial</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="p">((</span><span class="nx">n</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">n</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Get the last element of an array. Passing <strong>n</strong> will return the last N
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-36">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-36">&#182;</a>               </div>               <p>Get the last element of an array. Passing <strong>n</strong> will return the last N
 values in the array. The <strong>guard</strong> check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">last</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">n</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">((</span><span class="nx">n</span> <span class="o">!=</span> <span class="kc">null</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nb">Math</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="nx">n</span><span class="p">,</span> <span class="mi">0</span><span class="p">));</span>
     <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">array</span><span class="p">[</span><span class="nx">array</span><span class="p">.</span><span class="nx">length</span> <span class="o">-</span> <span class="mi">1</span><span class="p">];</span>
     <span class="p">}</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-37">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-37">&#182;</a>               </div>               <p>Returns everything but the first entry of the array. Aliased as <code>tail</code>.
 Especially useful on the arguments object. Passing an <strong>index</strong> will return
 the rest of the values in the array from that index onward. The <strong>guard</strong>
 check allows it to work with <code>_.map</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">tail</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">index</span><span class="p">,</span> <span class="nx">guard</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="p">(</span><span class="nx">index</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="o">||</span> <span class="nx">guard</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">:</span> <span class="nx">index</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-38">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-38">&#182;</a>               </div>               <p>Trim out all falsy values from an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compact</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!!</span><span class="nx">value</span><span class="p">;</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">shallow</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-39">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-39">&#182;</a>               </div>               <p>Return a completely flattened version of an array.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">shallow</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">reduce</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">value</span><span class="p">))</span> <span class="k">return</span> <span class="nx">memo</span><span class="p">.</span><span class="nx">concat</span><span class="p">(</span><span class="nx">shallow</span> <span class="o">?</span> <span class="nx">value</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">value</span><span class="p">));</span>
       <span class="nx">memo</span><span class="p">[</span><span class="nx">memo</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-40">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-40">&#182;</a>               </div>               <p>Return a version of the array that does not contain the specified value(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">without</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-41">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-41">&#182;</a>               </div>               <p>Produce a duplicate-free version of the array. If the array has already
 been sorted, you have the option of using a faster algorithm.
 Aliased as <code>unique</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">unique</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">isSorted</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">initial</span> <span class="o">=</span> <span class="nx">iterator</span> <span class="o">?</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">)</span> <span class="o">:</span> <span class="nx">array</span><span class="p">;</span>
@@ -261,10 +260,10 @@ Aliased as <code>unique</code>.</p>             </td>             <td class="cod
       <span class="k">return</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="p">},</span> <span class="p">[]);</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-42">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-42">&#182;</a>               </div>               <p>Produce an array that contains the union: each distinct element from all of
 the passed-in arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">union</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="kc">true</span><span class="p">));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-43">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-43">&#182;</a>               </div>               <p>Produce an array that contains every item shared between all the
 passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">intersection</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">intersect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">uniq</span><span class="p">(</span><span class="nx">array</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
@@ -272,18 +271,18 @@ passed-in arrays. (Aliased as "intersect" for back-compat.)</p>             </td
         <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">other</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">0</span><span class="p">;</span>
       <span class="p">});</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>Take the difference between one array and a number of other arrays.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-44">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-44">&#182;</a>               </div>               <p>Take the difference between one array and a number of other arrays.
 Only the elements present in just the first array will remain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">difference</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">rest</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">flatten</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">));</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">filter</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">){</span> <span class="k">return</span> <span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">include</span><span class="p">(</span><span class="nx">rest</span><span class="p">,</span> <span class="nx">value</span><span class="p">);</span> <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-45">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-45">&#182;</a>               </div>               <p>Zip together multiple lists into a single array -- elements that share
 an index go together.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">zip</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">max</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s1">&#39;length&#39;</span><span class="p">));</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="k">new</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">length</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">length</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">results</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">pluck</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="s2">&quot;&quot;</span> <span class="o">+</span> <span class="nx">i</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-46">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-46">&#182;</a>               </div>               <p>If the browser doesn't supply us with indexOf (I'm looking at you, <strong>MSIE</strong>),
 we need this function. Return the position of the first occurrence of an
 item in an array, or -1 if the item is not included in the array.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>indexOf</code> if available.
@@ -298,13 +297,13 @@ for <strong>isSorted</strong> to use binary search.</p>             </td>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span> <span class="o">===</span> <span class="nx">nativeIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">indexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="k">for</span> <span class="p">(</span><span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">l</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">l</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">i</span> <span class="k">in</span> <span class="nx">array</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-47">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-47">&#182;</a>               </div>               <p>Delegates to <strong>ECMAScript 5</strong>'s native <code>lastIndexOf</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">array</span><span class="p">,</span> <span class="nx">item</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">array</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeLastIndexOf</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span> <span class="o">===</span> <span class="nx">nativeLastIndexOf</span><span class="p">)</span> <span class="k">return</span> <span class="nx">array</span><span class="p">.</span><span class="nx">lastIndexOf</span><span class="p">(</span><span class="nx">item</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="nx">array</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
     <span class="k">while</span> <span class="p">(</span><span class="nx">i</span><span class="o">--</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">i</span> <span class="k">in</span> <span class="nx">array</span> <span class="o">&amp;&amp;</span> <span class="nx">array</span><span class="p">[</span><span class="nx">i</span><span class="p">]</span> <span class="o">===</span> <span class="nx">item</span><span class="p">)</span> <span class="k">return</span> <span class="nx">i</span><span class="p">;</span>
     <span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-48">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-48">&#182;</a>               </div>               <p>Generate an integer Array containing an arithmetic progression. A port of
 the native Python <code>range()</code> function. See
 <a href="http://docs.python.org/library/functions.html#range">the Python documentation</a>.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">range</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">start</span><span class="p">,</span> <span class="nx">stop</span><span class="p">,</span> <span class="nx">step</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">&lt;=</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
@@ -323,7 +322,7 @@ the native Python <code>range()</code> function. See
     <span class="p">}</span>
 
     <span class="k">return</span> <span class="nx">range</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Reusable constructor function for prototype setting.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ctor</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(){};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-49">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-49">&#182;</a>               </div>               <h2>Function (ahem) Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-50">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-50">&#182;</a>               </div>               <p>Reusable constructor function for prototype setting.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">ctor</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(){};</span></pre></div>             </td>           </tr>                               <tr id="section-51">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-51">&#182;</a>               </div>               <p>Create a function bound to a given object (assigning <code>this</code>, and arguments,
 optionally). Binding with arguments is also known as <code>curry</code>.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Function.bind</code> if available.
 We check for <code>func.bind</code> first, to fail fast when <code>func</code> is undefined.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span> <span class="o">=</span> <span class="kd">function</span> <span class="nx">bind</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
@@ -339,27 +338,27 @@ We check for <code>func.bind</code> first, to fail fast when <code>func</code> i
       <span class="k">if</span> <span class="p">(</span><span class="nb">Object</span><span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="o">===</span> <span class="nx">result</span><span class="p">)</span> <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">self</span><span class="p">;</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-52">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-52">&#182;</a>               </div>               <p>Bind all of an object's methods to that object. Useful for ensuring that
 all callbacks defined on an object belong to it.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">bindAll</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">funcs</span><span class="p">.</span><span class="nx">length</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">funcs</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">f</span><span class="p">)</span> <span class="p">{</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">f</span><span class="p">],</span> <span class="nx">obj</span><span class="p">);</span> <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-53">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-53">&#182;</a>               </div>               <p>Memoize an expensive function by storing its results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">memoize</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">hasher</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">memo</span> <span class="o">=</span> <span class="p">{};</span>
     <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-55">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-55">&#182;</a>               </div>               <p>Defers a function, scheduling it to run after the current call stack has
 cleared.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defer</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="p">[</span><span class="nx">func</span><span class="p">,</span> <span class="mi">1</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">)));</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-56">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-56">&#182;</a>               </div>               <p>Returns a function, that, when invoked, will only be triggered at most once
 during a given window of time.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">throttle</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">context</span><span class="p">,</span> <span class="nx">args</span><span class="p">,</span> <span class="nx">timeout</span><span class="p">,</span> <span class="nx">throttling</span><span class="p">,</span> <span class="nx">more</span><span class="p">;</span>
     <span class="kd">var</span> <span class="nx">whenDone</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span><span class="p">(</span><span class="kd">function</span><span class="p">(){</span> <span class="nx">more</span> <span class="o">=</span> <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">false</span><span class="p">;</span> <span class="p">},</span> <span class="nx">wait</span><span class="p">);</span>
@@ -379,7 +378,7 @@ during a given window of time.</p>             </td>             <td class="code
       <span class="nx">whenDone</span><span class="p">();</span>
       <span class="nx">throttling</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-57">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-57">&#182;</a>               </div>               <p>Returns a function, that, as long as it continues to be invoked, will not
 be triggered. The function will be called after it stops being called for
 N milliseconds.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">debounce</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">timeout</span><span class="p">;</span>
@@ -392,7 +391,7 @@ N milliseconds.</p>             </td>             <td class="code">
       <span class="nx">clearTimeout</span><span class="p">(</span><span class="nx">timeout</span><span class="p">);</span>
       <span class="nx">timeout</span> <span class="o">=</span> <span class="nx">setTimeout</span><span class="p">(</span><span class="nx">later</span><span class="p">,</span> <span class="nx">wait</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-58">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-58">&#182;</a>               </div>               <p>Returns a function that will be executed at most one time, no matter how
 often you call it. Useful for lazy initialization.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">once</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">ran</span> <span class="o">=</span> <span class="kc">false</span><span class="p">,</span> <span class="nx">memo</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -400,14 +399,14 @@ often you call it. Useful for lazy initialization.</p>             </td>
       <span class="nx">ran</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
       <span class="k">return</span> <span class="nx">memo</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-59">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-59">&#182;</a>               </div>               <p>Returns the first function passed as an argument to the second,
 allowing you to adjust arguments, run code before and after, and
 conditionally execute the original function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">wrap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wrapper</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="p">[</span><span class="nx">func</span><span class="p">].</span><span class="nx">concat</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">0</span><span class="p">));</span>
       <span class="k">return</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">args</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-60">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-60">&#182;</a>               </div>               <p>Returns a function that is the composition of a list of functions, each
 consuming the return value of the function that follows.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">compose</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">funcs</span> <span class="o">=</span> <span class="nx">arguments</span><span class="p">;</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
@@ -417,153 +416,153 @@ consuming the return value of the function that follows.</p>             </td>
       <span class="p">}</span>
       <span class="k">return</span> <span class="nx">args</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-61">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-61">&#182;</a>               </div>               <p>Returns a function that will only be executed after being called N times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">after</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">times</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">times</span> <span class="o">&lt;=</span> <span class="mi">0</span><span class="p">)</span> <span class="k">return</span> <span class="nx">func</span><span class="p">();</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="o">--</span><span class="nx">times</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span> <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span> <span class="p">}</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-62">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-62">&#182;</a>               </div>               <h2>Object Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-63">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-63">&#182;</a>               </div>               <p>Retrieve the names of an object's properties.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-65">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-65">&#182;</a>               </div>               <p>Return a sorted list of the function names available on the object.
 Aliased as <code>methods</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">functions</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">methods</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">names</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">]))</span> <span class="nx">names</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">key</span><span class="p">);</span>
     <span class="p">}</span>
     <span class="k">return</span> <span class="nx">names</span><span class="p">.</span><span class="nx">sort</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-67">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-67">&#182;</a>               </div>               <p>Fill in a given object with default properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">defaults</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-68">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-68">&#182;</a>               </div>               <p>Create a (shallow-cloned) duplicate of an object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">clone</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">?</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">slice</span><span class="p">()</span> <span class="o">:</span> <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span><span class="p">({},</span> <span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-69">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-69">&#182;</a>               </div>               <p>Invokes interceptor with the obj, and then returns obj.
 The primary purpose of this method is to "tap into" a method chain, in
 order to perform operations on intermediate results within the chain.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">tap</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">interceptor</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">interceptor</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
-See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span> <span class="o">||</span> <span class="nx">b</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Compare <code>[[Class]]</code> names.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">className</span> <span class="o">=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-70">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-70">&#182;</a>               </div>               <p>Internal recursive comparison function.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">function</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="nx">stack</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-71">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-71">&#182;</a>               </div>               <p>Identical objects are equal. <code>0 === -0</code>, but they aren't identical.
+See the Harmony <code>egal</code> proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">!==</span> <span class="mi">0</span> <span class="o">||</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-72">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-72">&#182;</a>               </div>               <p>A strict comparison is necessary because <code>null == undefined</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="kc">null</span> <span class="o">||</span> <span class="nx">b</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">a</span> <span class="o">===</span> <span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-73">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-73">&#182;</a>               </div>               <p>Unwrap any wrapped objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">a</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">_chain</span><span class="p">)</span> <span class="nx">b</span> <span class="o">=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-74">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-74">&#182;</a>               </div>               <p>Invoke a custom <code>isEqual</code> method if one is provided.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
+    <span class="k">if</span> <span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span><span class="p">(</span><span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">))</span> <span class="k">return</span> <span class="nx">b</span><span class="p">.</span><span class="nx">isEqual</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-75">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-75">&#182;</a>               </div>               <p>Compare <code>[[Class]]</code> names.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">className</span> <span class="o">=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">className</span> <span class="o">!=</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
-    <span class="k">switch</span> <span class="p">(</span><span class="nx">className</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p>Strings, numbers, dates, and booleans are compared by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object String]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Primitives and their corresponding object wrappers are equivalent; thus, <code>"5"</code> is
+    <span class="k">switch</span> <span class="p">(</span><span class="nx">className</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-76">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-76">&#182;</a>               </div>               <p>Strings, numbers, dates, and booleans are compared by value.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object String]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-77">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-77">&#182;</a>               </div>               <p>Primitives and their corresponding object wrappers are equivalent; thus, <code>"5"</code> is
 equivalent to <code>new String("5")</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nx">a</span> <span class="o">==</span> <span class="nb">String</span><span class="p">(</span><span class="nx">b</span><span class="p">);</span>
-      <span class="k">case</span> <span class="s1">&#39;[object Number]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p><code>NaN</code>s are equivalent, but non-reflexive. An <code>egal</code> comparison is performed for
+      <span class="k">case</span> <span class="s1">&#39;[object Number]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-78">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-78">&#182;</a>               </div>               <p><code>NaN</code>s are equivalent, but non-reflexive. An <code>egal</code> comparison is performed for
 other numeric values.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="nx">a</span> <span class="o">!=</span> <span class="o">+</span><span class="nx">a</span> <span class="o">?</span> <span class="nx">b</span> <span class="o">!=</span> <span class="o">+</span><span class="nx">b</span> <span class="o">:</span> <span class="p">(</span><span class="nx">a</span> <span class="o">==</span> <span class="mi">0</span> <span class="o">?</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">a</span> <span class="o">==</span> <span class="mi">1</span> <span class="o">/</span> <span class="nx">b</span> <span class="o">:</span> <span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">);</span>
       <span class="k">case</span> <span class="s1">&#39;[object Date]&#39;</span><span class="o">:</span>
-      <span class="k">case</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Coerce dates and booleans to numeric primitive values. Dates are compared by their
+      <span class="k">case</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="o">:</span></pre></div>             </td>           </tr>                               <tr id="section-79">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-79">&#182;</a>               </div>               <p>Coerce dates and booleans to numeric primitive values. Dates are compared by their
 millisecond representations. Note that invalid dates with millisecond representations
-of <code>NaN</code> are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>RegExps are compared by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object RegExp]&#39;</span><span class="o">:</span>
+of <code>NaN</code> are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">return</span> <span class="o">+</span><span class="nx">a</span> <span class="o">==</span> <span class="o">+</span><span class="nx">b</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-80">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-80">&#182;</a>               </div>               <p>RegExps are compared by their source patterns and flags.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">case</span> <span class="s1">&#39;[object RegExp]&#39;</span><span class="o">:</span>
         <span class="k">return</span> <span class="nx">a</span><span class="p">.</span><span class="nx">source</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">source</span> <span class="o">&amp;&amp;</span>
                <span class="nx">a</span><span class="p">.</span><span class="nx">global</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">global</span> <span class="o">&amp;&amp;</span>
                <span class="nx">a</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">multiline</span> <span class="o">&amp;&amp;</span>
                <span class="nx">a</span><span class="p">.</span><span class="nx">ignoreCase</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">ignoreCase</span><span class="p">;</span>
     <span class="p">}</span>
-    <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span> <span class="o">||</span> <span class="k">typeof</span> <span class="nx">b</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic
+    <span class="k">if</span> <span class="p">(</span><span class="k">typeof</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span> <span class="o">||</span> <span class="k">typeof</span> <span class="nx">b</span> <span class="o">!=</span> <span class="s1">&#39;object&#39;</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-81">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-81">&#182;</a>               </div>               <p>Assume equality for cyclic structures. The algorithm for detecting cyclic
 structures is adapted from ES 5.1 section 15.12.3, abstract operation <code>JO</code>.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="kd">var</span> <span class="nx">length</span> <span class="o">=</span> <span class="nx">stack</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of
+    <span class="k">while</span> <span class="p">(</span><span class="nx">length</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-82">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-82">&#182;</a>               </div>               <p>Linear search. Performance is inversely proportional to the number of
 unique nested structures.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">stack</span><span class="p">[</span><span class="nx">length</span><span class="p">]</span> <span class="o">==</span> <span class="nx">a</span><span class="p">)</span> <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
-    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Recursively compare objects and arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">className</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Compare array lengths to determine if a deep comparison is necessary.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="nx">size</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-83">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-83">&#182;</a>               </div>               <p>Add the first object to the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">push</span><span class="p">(</span><span class="nx">a</span><span class="p">);</span>
+    <span class="kd">var</span> <span class="nx">size</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="nx">result</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-84">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-84">&#182;</a>               </div>               <p>Recursively compare objects and arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">if</span> <span class="p">(</span><span class="nx">className</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-85">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-85">&#182;</a>               </div>               <p>Compare array lengths to determine if a deep comparison is necessary.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="nx">size</span> <span class="o">=</span> <span class="nx">a</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
       <span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="o">==</span> <span class="nx">b</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
-      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Deep compare the contents, ignoring non-numeric properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">while</span> <span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Ensure commutative equality for sparse arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-86">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-86">&#182;</a>               </div>               <p>Deep compare the contents, ignoring non-numeric properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>        <span class="k">while</span> <span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-87">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-87">&#182;</a>               </div>               <p>Ensure commutative equality for sparse arrays.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">==</span> <span class="nx">size</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">size</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
       <span class="p">}</span>
-    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Objects with different constructors are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">||</span> <span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+    <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Objects with different constructors are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">||</span> <span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
-      <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
+      <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
           <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
         <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
       <span class="p">}</span>
-    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Remove the first object from the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">();</span>
+    <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-93">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-93">&#182;</a>               </div>               <p>Remove the first object from the stack of traversed objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="nx">stack</span><span class="p">.</span><span class="nx">pop</span><span class="p">();</span>
     <span class="k">return</span> <span class="nx">result</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-94">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-94">&#182;</a>               </div>               <p>Perform a deep comparison to check if two objects are equal.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEqual</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">b</span><span class="p">,</span> <span class="p">[]);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Is a given array, string, or object empty?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Is a given array, string, or object empty?
 An "empty" object has no enumerable own-properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Is a given value an array?
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-97">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-97">&#182;</a>               </div>               <p>Is a given value an array?
 Delegates to ECMA5's native Array.isArray</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span> <span class="o">=</span> <span class="nx">nativeIsArray</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Array]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-98">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-98">&#182;</a>               </div>               <p>Is a given variable an object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isObject</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-99">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-99">&#182;</a>               </div>               <p>Is a given variable an arguments object?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Arguments]&#39;</span><span class="p">;</span>
   <span class="p">};</span>
   <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">arguments</span><span class="p">))</span> <span class="p">{</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
     <span class="p">};</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Function]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-101">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-101">&#182;</a>               </div>               <p>Is a given value a string?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object String]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-102">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-102">&#182;</a>               </div>               <p>Is a given value a number?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNumber</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Number]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p><code>NaN</code> is the only value for which <code>===</code> is not reflexive.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-103">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-103">&#182;</a>               </div>               <p>Is the given value <code>NaN</code>?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nb">isNaN</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-104">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-104">&#182;</a>               </div>               <p><code>NaN</code> is the only value for which <code>===</code> is not reflexive.</p>             </td>             <td class="code">               <div class="highlight"><pre>    <span class="k">return</span> <span class="nx">obj</span> <span class="o">!==</span> <span class="nx">obj</span><span class="p">;</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-105">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-105">&#182;</a>               </div>               <p>Is a given value a boolean?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isBoolean</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">true</span> <span class="o">||</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">false</span> <span class="o">||</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Boolean]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-106">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-106">&#182;</a>               </div>               <p>Is a given value a date?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isDate</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Date]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-107">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-107">&#182;</a>               </div>               <p>Is the given value a regular expression?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isRegExp</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object RegExp]&#39;</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-108">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-108">&#182;</a>               </div>               <p>Is a given value equal to null?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isNull</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="o">+</span><span class="nx">string</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&amp;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;amp;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&lt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;lt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&gt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;gt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;quot;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;#x27;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\//g</span><span class="p">,</span><span class="s1">&#39;&amp;#x2F;&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">escape</span>      <span class="o">:</span> <span class="sr">/&lt;%-([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>When customizing <code>templateSettings</code>, if you don't want to define an
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>When customizing <code>templateSettings</code>, if you don't want to define an
 interpolation, evaluation or escaping regex, we need one that is
-guaranteed not to match.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">noMatch</span> <span class="o">=</span> <span class="sr">/.^/</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+guaranteed not to match.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">noMatch</span> <span class="o">=</span> <span class="sr">/.^/</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -591,19 +590,19 @@ and correctly escapes quotes within interpolated code.</p>             </td>
     <span class="k">return</span> <span class="kd">function</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>Add a "chain" function, which will delegate to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>Add a "chain" function, which will delegate to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">wrapped</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
@@ -612,15 +611,15 @@ underscore functions. Wrapped objects may be chained.</p>             </td>
       <span class="k">if</span> <span class="p">((</span><span class="nx">name</span> <span class="o">==</span> <span class="s1">&#39;shift&#39;</span> <span class="o">||</span> <span class="nx">name</span> <span class="o">==</span> <span class="s1">&#39;splice&#39;</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="k">delete</span> <span class="nx">wrapped</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-131">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-131">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-132">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-132">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index ebcb46603..afef3e5ac 100644
--- a/index.html
+++ b/index.html
@@ -62,6 +62,11 @@
       width: 550px;
       margin: 40px 0 50px 260px;
     }
+    div.warning {
+      margin-top: 15px;
+      font: bold 11px Arial;
+      color: #770000;
+    }
     p {
       margin: 20px 0;
       width: 550px;
@@ -129,7 +134,7 @@
   <div id="sidebar" class="interface">
 
     <a class="toc_title" href="#">
-      Underscore.js <span class="version">(1.2.4)</span>
+      Underscore.js <span class="version">(1.3.0)</span>
     </a>
     
     <a class="toc_title" href="#">
@@ -311,14 +316,16 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.2.4)</a></td>
+        <td><a href="underscore.js">Development Version (1.3.0)</a></td>
         <td><i>34kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.2.4)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.3.0)</a></td>
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
+    
+    <div class="warning">Upgrade warning: version 1.3.0 removes AMD (RequireJS) support.</div>
 
     <div id="documentation">
 
@@ -1458,6 +1465,17 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.3.0</b> &mdash; <small><i>Jan. 11, 2012</i></small><br />
+        <ul>
+          <li>
+            Removed AMD (RequireJS) support from Underscore. If you'd like to use
+            Underscore with RequireJS, you can load it as a normal script, wrap
+            or patch your copy, or download a forked version.
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.2.4</b> &mdash; <small><i>Jan. 4, 2012</i></small><br />
         <ul>
diff --git a/package.json b/package.json
index d9dcd93ad..0749177b4 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,5 @@
   "contributors"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.2.4"
+  "version"       : "1.3.0"
 }
diff --git a/underscore-min.js b/underscore-min.js
index 122914e24..fe1ffd20a 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,4 +1,4 @@
-// Underscore.js 1.2.4
+// Underscore.js 1.3.0
 // (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
@@ -7,25 +7,25 @@
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+b.isArguments=function(a){return l.call(a)=="[object Arguments]"};if(!b.isArguments(arguments))b.isArguments=function(a){return!(!a||!m.call(a,"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};
+b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){s._=G;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.escape=function(a){return(""+a).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#x27;").replace(/\//g,"&#x2F;")};b.mixin=function(a){j(b.functions(a),function(c){J(c,b[c]=
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diff --git a/underscore.js b/underscore.js
index 0d078a6a7..096a4800d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.2.4
+//     Underscore.js 1.3.0
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -62,7 +62,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.2.4';
+  _.VERSION = '1.3.0';
 
   // Collection Functions
   // --------------------

From 978255b7780952f7603d24f78485b1d90a6e2dfa Mon Sep 17 00:00:00 2001
From: Peter Jihoon Kim <raingrove@gmail.com>
Date: Fri, 13 Jan 2012 20:09:50 +0800
Subject: [PATCH 464/533] added "collect" alias for "map"

---
 test/collections.js | 3 +++
 underscore.js       | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/collections.js b/test/collections.js
index 46bcdf2af..cff9763ce 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -35,6 +35,9 @@ $(document).ready(function() {
     var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
     equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
 
+    doubled = _.collect([1, 2, 3], function(num){ return num * 2; });
+    equals(doubled.join(', '), '2, 4, 6', 'aliased as "collect"');
+
     var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
     equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
 
diff --git a/underscore.js b/underscore.js
index 096a4800d..9c8bcc2b0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -89,7 +89,7 @@
 
   // Return the results of applying the iterator to each element.
   // Delegates to **ECMAScript 5**'s native `map` if available.
-  _.map = function(obj, iterator, context) {
+  _.map = _.collect = function(obj, iterator, context) {
     var results = [];
     if (obj == null) return results;
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);

From 3898597b12fc80a70e5585d5a99c66ce8b52b6d8 Mon Sep 17 00:00:00 2001
From: Arlo Breault <arlolra@gmail.com>
Date: Wed, 18 Jan 2012 20:34:54 -0800
Subject: [PATCH 465/533] has

---
 underscore.js | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/underscore.js b/underscore.js
index 9c8bcc2b0..b6671d50b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -26,8 +26,7 @@
   // Create quick reference variables for speed access to core prototypes.
   var slice            = ArrayProto.slice,
       unshift          = ArrayProto.unshift,
-      toString         = ObjProto.toString,
-      hasOwnProperty   = ObjProto.hasOwnProperty;
+      toString         = ObjProto.toString;
 
   // All **ECMAScript 5** native function implementations that we hope to use
   // are declared here.
@@ -80,7 +79,7 @@
       }
     } else {
       for (var key in obj) {
-        if (hasOwnProperty.call(obj, key)) {
+        if (_.has(obj, key)) {
           if (iterator.call(context, obj[key], key, obj) === breaker) return;
         }
       }
@@ -506,7 +505,7 @@
     hasher || (hasher = _.identity);
     return function() {
       var key = hasher.apply(this, arguments);
-      return hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
     };
   };
 
@@ -612,7 +611,7 @@
   _.keys = nativeKeys || function(obj) {
     if (obj !== Object(obj)) throw new TypeError('Invalid object');
     var keys = [];
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
     return keys;
   };
 
@@ -733,17 +732,17 @@
       if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
       // Deep compare objects.
       for (var key in a) {
-        if (hasOwnProperty.call(a, key)) {
+        if (_.has(a, key)) {
           // Count the expected number of properties.
           size++;
           // Deep compare each member.
-          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
+          if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break;
         }
       }
       // Ensure that both objects contain the same number of properties.
       if (result) {
         for (key in b) {
-          if (hasOwnProperty.call(b, key) && !(size--)) break;
+          if (_.has(b, key) && !(size--)) break;
         }
         result = !size;
       }
@@ -762,7 +761,7 @@
   // An "empty" object has no enumerable own-properties.
   _.isEmpty = function(obj) {
     if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
+    for (var key in obj) if (_.has(obj, key)) return false;
     return true;
   };
 
@@ -788,7 +787,7 @@
   };
   if (!_.isArguments(arguments)) {
     _.isArguments = function(obj) {
-      return !!(obj && hasOwnProperty.call(obj, 'callee'));
+      return !!(obj && _.has(obj, 'callee'));
     };
   }
 
@@ -838,6 +837,11 @@
     return obj === void 0;
   };
 
+  // Has own property?
+  _.has = function(obj, key) {
+    return ObjProto.hasOwnProperty.call(obj, key);
+  };
+
   // Utility Functions
   // -----------------
 

From 99c17c4a0daa23371a1fd69ad6519da5b77b8c4b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 23 Jan 2012 15:48:35 -0500
Subject: [PATCH 466/533] reverting an old change -- _.extend should absolutely
 copy undefined values.

---
 test/objects.js | 2 +-
 underscore.js   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 6d432033a..0105d608a 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -38,7 +38,7 @@ $(document).ready(function() {
     result = _.extend({x:'x'}, {a:'a', x:2}, {a:'b'});
     ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
     result = _.extend({}, {a: void 0, b: null});
-    equals(_.keys(result).join(''), 'b', 'extend does not copy undefined values');
+    equals(_.keys(result).join(''), 'ab', 'extend does not copy undefined values');
   });
 
   test("objects: defaults", function() {
diff --git a/underscore.js b/underscore.js
index 096a4800d..bf42fe006 100644
--- a/underscore.js
+++ b/underscore.js
@@ -635,7 +635,7 @@
   _.extend = function(obj) {
     each(slice.call(arguments, 1), function(source) {
       for (var prop in source) {
-        if (source[prop] !== void 0) obj[prop] = source[prop];
+        obj[prop] = source[prop];
       }
     });
     return obj;

From 5ed8b6e6ce0d0d724ce3fc8fd5a516fd1e535970 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 23 Jan 2012 16:05:56 -0500
Subject: [PATCH 467/533] using a cached reference to hasOwnProperty (again)

---
 underscore.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index b787a6648..debc3481d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -26,7 +26,8 @@
   // Create quick reference variables for speed access to core prototypes.
   var slice            = ArrayProto.slice,
       unshift          = ArrayProto.unshift,
-      toString         = ObjProto.toString;
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
 
   // All **ECMAScript 5** native function implementations that we hope to use
   // are declared here.
@@ -839,7 +840,7 @@
 
   // Has own property?
   _.has = function(obj, key) {
-    return ObjProto.hasOwnProperty.call(obj, key);
+    return hasOwnProperty.call(obj, key);
   };
 
   // Utility Functions

From d959c019f8a8dcfb7ed68a4fd6dfc43bda516931 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 23 Jan 2012 16:10:49 -0500
Subject: [PATCH 468/533] clarify that sortBy is ascending.

---
 index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index afef3e5ac..3c0ce397f 100644
--- a/index.html
+++ b/index.html
@@ -521,8 +521,8 @@ _.min(numbers);
       <p id="sortBy">
         <b class="header">sortBy</b><code>_.sortBy(list, iterator, [context])</code>
         <br />
-        Returns a sorted copy of <b>list</b>, ranked by the results of running 
-        each value through <b>iterator</b>.
+        Returns a sorted copy of <b>list</b>, ranked in ascending order by the 
+        results of running each value through <b>iterator</b>.
       </p>
       <pre>
 _.sortBy([1, 2, 3, 4, 5, 6], function(num){ return Math.sin(num); });

From a8c956fe6ae16a22d11a48cd77a956c2ad7125d6 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 23 Jan 2012 17:03:19 -0500
Subject: [PATCH 469/533] Fixes #436 -- document the second argument to
 _.flatten

---
 index.html | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index 3c0ce397f..69a6e13be 100644
--- a/index.html
+++ b/index.html
@@ -656,13 +656,17 @@ _.compact([0, 1, false, 2, '', 3]);
 </pre>
 
       <p id="flatten">
-        <b class="header">flatten</b><code>_.flatten(array)</code>
+        <b class="header">flatten</b><code>_.flatten(array, [shallow])</code>
         <br />
-        Flattens a nested <b>array</b> (the nesting can be to any depth).
+        Flattens a nested <b>array</b> (the nesting can be to any depth). If you
+        pass <b>shallow</b>, the array will only be flattened a single level.
       </p>
       <pre>
-_.flatten([1, [2], [3, [[[4]]]]]);
+_.flatten([1, [2], [3, [[4]]]]);
 =&gt; [1, 2, 3, 4];
+
+_.flatten([1, [2], [3, [[4]]]], true);
+=&gt; [1, 2, 3, [[4]]];
 </pre>
 
       <p id="without">

From cdf43ea742271d9f612e639d76e5ed86ebb7c3fa Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 23 Jan 2012 17:33:48 -0500
Subject: [PATCH 470/533] Fixes #429 -- don't escape slash escapes in the body
 of interpolations...

---
 test/utility.js |  5 ++++-
 underscore.js   | 14 +++++++++-----
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index 30ba3a940..7bc5cb44b 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -57,6 +57,9 @@ $(document).ready(function() {
     var backslashTemplate = _.template("<%= thing %> is \\ridanculous");
     equals(backslashTemplate({thing: 'This'}), "This is \\ridanculous");
 
+    var escapeTemplate = _.template('<%= a ? "checked=\\"checked\\"" : "" %>');
+    equals(escapeTemplate({a: true}), 'checked="checked"', 'can handle slash escapes in interpolations.');
+
     var fancyTemplate = _.template("<ul><% \
       for (key in people) { \
     %><li><%= people[key] %></li><% } %></ul>");
@@ -65,7 +68,7 @@ $(document).ready(function() {
 
     var escapedCharsInJavascriptTemplate = _.template("<ul><% _.each(numbers.split('\\n'), function(item) { %><li><%= item %></li><% }) %></ul>");
     result = escapedCharsInJavascriptTemplate({numbers: "one\ntwo\nthree\nfour"});
-    equals(result, "<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>", 'Can use escaped characters (e.g. \\n) in Javascript')
+    equals(result, "<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>", 'Can use escaped characters (e.g. \\n) in Javascript');
 
     var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"thumbnail\" rel=\"<%= p %>\"></div><% }); %>");
     result = namespaceCollisionTemplate({
diff --git a/underscore.js b/underscore.js
index debc3481d..6687ded01 100644
--- a/underscore.js
+++ b/underscore.js
@@ -897,6 +897,12 @@
   // guaranteed not to match.
   var noMatch = /.^/;
 
+  // Within an interpolation, evaluation, or escaping, remove HTML escaping
+  // that had been previously added.
+  var unescape = function(code) {
+    return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'");
+  };
+
   // JavaScript micro-templating, similar to John Resig's implementation.
   // Underscore templating handles arbitrary delimiters, preserves whitespace,
   // and correctly escapes quotes within interpolated code.
@@ -907,15 +913,13 @@
       str.replace(/\\/g, '\\\\')
          .replace(/'/g, "\\'")
          .replace(c.escape || noMatch, function(match, code) {
-           return "',_.escape(" + code.replace(/\\'/g, "'") + "),'";
+           return "',_.escape(" + unescape(code) + "),'";
          })
          .replace(c.interpolate || noMatch, function(match, code) {
-           return "'," + code.replace(/\\'/g, "'") + ",'";
+           return "'," + unescape(code) + ",'";
          })
          .replace(c.evaluate || noMatch, function(match, code) {
-           return "');" + code.replace(/\\'/g, "'")
-                              .replace(/[\r\n\t]/g, ' ')
-                              .replace(/\\\\/g, '\\') + ";__p.push('";
+           return "');" + unescape(code).replace(/[\r\n\t]/g, ' ') + ";__p.push('";
          })
          .replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')

From eeea70c457db3aebaef5b9251661f779844758fe Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 23 Jan 2012 17:56:29 -0500
Subject: [PATCH 471/533] Underscore 1.3.1

---
 docs/underscore.html | 69 +++++++++++++++++++++++---------------------
 index.html           | 40 +++++++++++++++++++++++--
 package.json         |  3 +-
 underscore-min.js    | 50 ++++++++++++++++----------------
 underscore.js        |  4 +--
 5 files changed, 101 insertions(+), 65 deletions(-)

diff --git a/docs/underscore.html b/docs/underscore.html
index c92a32016..0c2bd9652 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.0
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.1
 (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -31,7 +31,7 @@ for Closure Compiler "advanced" mode.</p>             </td>             <td clas
     <span class="nx">exports</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
   <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">[</span><span class="s1">&#39;_&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="nx">_</span><span class="p">;</span>
-  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.3.0&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
+  <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-11">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-11">&#182;</a>               </div>               <p>Current version.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">VERSION</span> <span class="o">=</span> <span class="s1">&#39;1.3.1&#39;</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-12">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-12">&#182;</a>               </div>               <h2>Collection Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-13">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-13">&#182;</a>               </div>               <p>The cornerstone, an <code>each</code> implementation, aka <code>forEach</code>.
 Handles objects with the built-in <code>forEach</code>, arrays, and raw objects.
 Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">each</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">forEach</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
@@ -43,13 +43,13 @@ Delegates to <strong>ECMAScript 5</strong>'s native <code>forEach</code> if avai
       <span class="p">}</span>
     <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span>
           <span class="k">if</span> <span class="p">(</span><span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">key</span><span class="p">,</span> <span class="nx">obj</span><span class="p">)</span> <span class="o">===</span> <span class="nx">breaker</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
         <span class="p">}</span>
       <span class="p">}</span>
     <span class="p">}</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-14">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-14">&#182;</a>               </div>               <p>Return the results of applying the iterator to each element.
-Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+Delegates to <strong>ECMAScript 5</strong>'s native <code>map</code> if available.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">map</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">collect</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">results</span> <span class="o">=</span> <span class="p">[];</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">==</span> <span class="kc">null</span><span class="p">)</span> <span class="k">return</span> <span class="nx">results</span><span class="p">;</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">nativeMap</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span> <span class="o">===</span> <span class="nx">nativeMap</span><span class="p">)</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">);</span>
@@ -349,7 +349,7 @@ all callbacks defined on an object belong to it.</p>             </td>
     <span class="nx">hasher</span> <span class="o">||</span> <span class="p">(</span><span class="nx">hasher</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
     <span class="k">return</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">key</span> <span class="o">=</span> <span class="nx">hasher</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">);</span>
-      <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
+      <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">memo</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">?</span> <span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">:</span> <span class="p">(</span><span class="nx">memo</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">));</span>
     <span class="p">};</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-54">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-54">&#182;</a>               </div>               <p>Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">delay</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">func</span><span class="p">,</span> <span class="nx">wait</span><span class="p">)</span> <span class="p">{</span>
@@ -425,7 +425,7 @@ consuming the return value of the function that follows.</p>             </td>
 Delegates to <strong>ECMAScript 5</strong>'s native <code>Object.keys</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">keys</span> <span class="o">=</span> <span class="nx">nativeKeys</span> <span class="o">||</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">obj</span> <span class="o">!==</span> <span class="nb">Object</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">throw</span> <span class="k">new</span> <span class="nx">TypeError</span><span class="p">(</span><span class="s1">&#39;Invalid object&#39;</span><span class="p">);</span>
     <span class="kd">var</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[];</span>
-    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="nx">keys</span><span class="p">[</span><span class="nx">keys</span><span class="p">.</span><span class="nx">length</span><span class="p">]</span> <span class="o">=</span> <span class="nx">key</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">keys</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-64">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-64">&#182;</a>               </div>               <p>Retrieve the values of an object's properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">values</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span><span class="p">);</span>
@@ -439,7 +439,7 @@ Aliased as <code>methods</code></p>             </td>             <td class="cod
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-66">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-66">&#182;</a>               </div>               <p>Extend a given object with all the properties in passed-in object(s).</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">extend</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">prop</span> <span class="k">in</span> <span class="nx">source</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">!==</span> <span class="k">void</span> <span class="mi">0</span><span class="p">)</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
+        <span class="nx">obj</span><span class="p">[</span><span class="nx">prop</span><span class="p">]</span> <span class="o">=</span> <span class="nx">source</span><span class="p">[</span><span class="nx">prop</span><span class="p">];</span>
       <span class="p">}</span>
     <span class="p">});</span>
     <span class="k">return</span> <span class="nx">obj</span><span class="p">;</span>
@@ -487,11 +487,11 @@ unique nested structures.</p>             </td>             <td class="code">
         <span class="p">}</span>
       <span class="p">}</span>
     <span class="p">}</span> <span class="k">else</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-88">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-88">&#182;</a>               </div>               <p>Objects with different constructors are not equivalent.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">a</span> <span class="o">!=</span> <span class="s1">&#39;constructor&#39;</span> <span class="k">in</span> <span class="nx">b</span> <span class="o">||</span> <span class="nx">a</span><span class="p">.</span><span class="nx">constructor</span> <span class="o">!=</span> <span class="nx">b</span><span class="p">.</span><span class="nx">constructor</span><span class="p">)</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-89">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-89">&#182;</a>               </div>               <p>Deep compare objects.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">a</span><span class="p">)</span> <span class="p">{</span>
-        <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
+        <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">a</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="p">{</span></pre></div>             </td>           </tr>                               <tr id="section-90">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-90">&#182;</a>               </div>               <p>Count the expected number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="nx">size</span><span class="o">++</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-91">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-91">&#182;</a>               </div>               <p>Deep compare each member.</p>             </td>             <td class="code">               <div class="highlight"><pre>          <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="p">(</span><span class="nx">result</span> <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">eq</span><span class="p">(</span><span class="nx">a</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">b</span><span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">stack</span><span class="p">)))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
       <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-92">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-92">&#182;</a>               </div>               <p>Ensure that both objects contain the same number of properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>      <span class="k">if</span> <span class="p">(</span><span class="nx">result</span><span class="p">)</span> <span class="p">{</span>
         <span class="k">for</span> <span class="p">(</span><span class="nx">key</span> <span class="k">in</span> <span class="nx">b</span><span class="p">)</span> <span class="p">{</span>
-          <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">))</span> <span class="k">break</span><span class="p">;</span>
+          <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">b</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="o">!</span><span class="p">(</span><span class="nx">size</span><span class="o">--</span><span class="p">))</span> <span class="k">break</span><span class="p">;</span>
         <span class="p">}</span>
         <span class="nx">result</span> <span class="o">=</span> <span class="o">!</span><span class="nx">size</span><span class="p">;</span>
       <span class="p">}</span>
@@ -502,7 +502,7 @@ unique nested structures.</p>             </td>             <td class="code">
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-95">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-95">&#182;</a>               </div>               <p>Is a given array, string, or object empty?
 An "empty" object has no enumerable own-properties.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isEmpty</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArray</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">||</span> <span class="nx">_</span><span class="p">.</span><span class="nx">isString</span><span class="p">(</span><span class="nx">obj</span><span class="p">))</span> <span class="k">return</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">;</span>
-    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
+    <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">key</span> <span class="k">in</span> <span class="nx">obj</span><span class="p">)</span> <span class="k">if</span> <span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">))</span> <span class="k">return</span> <span class="kc">false</span><span class="p">;</span>
     <span class="k">return</span> <span class="kc">true</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-96">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-96">&#182;</a>               </div>               <p>Is a given value a DOM element?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isElement</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">obj</span><span class="p">.</span><span class="nx">nodeType</span> <span class="o">==</span> <span class="mi">1</span><span class="p">);</span>
@@ -516,7 +516,7 @@ Delegates to ECMA5's native Array.isArray</p>             </td>             <td
   <span class="p">};</span>
   <span class="k">if</span> <span class="p">(</span><span class="o">!</span><span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span><span class="p">(</span><span class="nx">arguments</span><span class="p">))</span> <span class="p">{</span>
     <span class="nx">_</span><span class="p">.</span><span class="nx">isArguments</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
-      <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
+      <span class="k">return</span> <span class="o">!!</span><span class="p">(</span><span class="nx">obj</span> <span class="o">&amp;&amp;</span> <span class="nx">_</span><span class="p">.</span><span class="nx">has</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="s1">&#39;callee&#39;</span><span class="p">));</span>
     <span class="p">};</span>
   <span class="p">}</span></pre></div>             </td>           </tr>                               <tr id="section-100">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-100">&#182;</a>               </div>               <p>Is a given value a function?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isFunction</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">toString</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="o">==</span> <span class="s1">&#39;[object Function]&#39;</span><span class="p">;</span>
@@ -535,34 +535,39 @@ Delegates to ECMA5's native Array.isArray</p>             </td>             <td
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="kc">null</span><span class="p">;</span>
   <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-109">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-109">&#182;</a>               </div>               <p>Is a given variable undefined?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">isUndefined</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">obj</span> <span class="o">===</span> <span class="k">void</span> <span class="mi">0</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-110">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-110">&#182;</a>               </div>               <p>Has own property?</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">has</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">hasOwnProperty</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">key</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-111">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-111">&#182;</a>               </div>               <h2>Utility Functions</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Run Underscore.js in <em>noConflict</em> mode, returning the <code>_</code> variable to its
 previous owner. Returns a reference to the Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">noConflict</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="nx">root</span><span class="p">.</span><span class="nx">_</span> <span class="o">=</span> <span class="nx">previousUnderscore</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-112">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-112">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Keep the identity function around for default iterators.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">identity</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">value</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">value</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-113">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-113">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Run a function <strong>n</strong> times.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">times</span> <span class="o">=</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">n</span><span class="p">,</span> <span class="nx">iterator</span><span class="p">,</span> <span class="nx">context</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">for</span> <span class="p">(</span><span class="kd">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="p">;</span> <span class="nx">i</span><span class="o">++</span><span class="p">)</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">context</span><span class="p">,</span> <span class="nx">i</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-114">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-114">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Escape a string for HTML interpolation.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">escape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">string</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="o">+</span><span class="nx">string</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&amp;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;amp;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&lt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;lt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&gt;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;gt;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&quot;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;quot;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s1">&#39;&amp;#x27;&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\//g</span><span class="p">,</span><span class="s1">&#39;&amp;#x2F;&#39;</span><span class="p">);</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-115">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-115">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Add your own custom functions to the Underscore object, ensuring that
 they're correctly added to the OOP wrapper as well.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">each</span><span class="p">(</span><span class="nx">_</span><span class="p">.</span><span class="nx">functions</span><span class="p">(</span><span class="nx">obj</span><span class="p">),</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">){</span>
       <span class="nx">addToWrapper</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">_</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">[</span><span class="nx">name</span><span class="p">]);</span>
     <span class="p">});</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-116">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-116">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">idCounter</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
   <span class="nx">_</span><span class="p">.</span><span class="nx">uniqueId</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">prefix</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">id</span> <span class="o">=</span> <span class="nx">idCounter</span><span class="o">++</span><span class="p">;</span>
     <span class="k">return</span> <span class="nx">prefix</span> <span class="o">?</span> <span class="nx">prefix</span> <span class="o">+</span> <span class="nx">id</span> <span class="o">:</span> <span class="nx">id</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-117">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-117">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span> <span class="o">=</span> <span class="p">{</span>
     <span class="nx">evaluate</span>    <span class="o">:</span> <span class="sr">/&lt;%([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">interpolate</span> <span class="o">:</span> <span class="sr">/&lt;%=([\s\S]+?)%&gt;/g</span><span class="p">,</span>
     <span class="nx">escape</span>      <span class="o">:</span> <span class="sr">/&lt;%-([\s\S]+?)%&gt;/g</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-118">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-118">&#182;</a>               </div>               <p>When customizing <code>templateSettings</code>, if you don't want to define an
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>When customizing <code>templateSettings</code>, if you don't want to define an
 interpolation, evaluation or escaping regex, we need one that is
-guaranteed not to match.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">noMatch</span> <span class="o">=</span> <span class="sr">/.^/</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-119">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-119">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
+guaranteed not to match.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">noMatch</span> <span class="o">=</span> <span class="sr">/.^/</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>Within an interpolation, evaluation, or escaping, remove HTML escaping
+that had been previously added.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">unescape</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
+    <span class="k">return</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\\\/g</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">);</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <p>JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">template</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">str</span><span class="p">,</span> <span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">c</span>  <span class="o">=</span> <span class="nx">_</span><span class="p">.</span><span class="nx">templateSettings</span><span class="p">;</span>
@@ -571,15 +576,13 @@ and correctly escapes quotes within interpolated code.</p>             </td>
       <span class="nx">str</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\/g</span><span class="p">,</span> <span class="s1">&#39;\\\\&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/&#39;/g</span><span class="p">,</span> <span class="s2">&quot;\\&#39;&quot;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">escape</span> <span class="o">||</span> <span class="nx">noMatch</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
-           <span class="k">return</span> <span class="s2">&quot;&#39;,_.escape(&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;),&#39;&quot;</span><span class="p">;</span>
+           <span class="k">return</span> <span class="s2">&quot;&#39;,_.escape(&quot;</span> <span class="o">+</span> <span class="nx">unescape</span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;),&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">interpolate</span> <span class="o">||</span> <span class="nx">noMatch</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
-           <span class="k">return</span> <span class="s2">&quot;&#39;,&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;,&#39;&quot;</span><span class="p">;</span>
+           <span class="k">return</span> <span class="s2">&quot;&#39;,&quot;</span> <span class="o">+</span> <span class="nx">unescape</span><span class="p">(</span><span class="nx">code</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;,&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="nx">c</span><span class="p">.</span><span class="nx">evaluate</span> <span class="o">||</span> <span class="nx">noMatch</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">match</span><span class="p">,</span> <span class="nx">code</span><span class="p">)</span> <span class="p">{</span>
-           <span class="k">return</span> <span class="s2">&quot;&#39;);&quot;</span> <span class="o">+</span> <span class="nx">code</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\&#39;/g</span><span class="p">,</span> <span class="s2">&quot;&#39;&quot;</span><span class="p">)</span>
-                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span>
-                              <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\\\\/g</span><span class="p">,</span> <span class="s1">&#39;\\&#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;;__p.push(&#39;&quot;</span><span class="p">;</span>
+           <span class="k">return</span> <span class="s2">&quot;&#39;);&quot;</span> <span class="o">+</span> <span class="nx">unescape</span><span class="p">(</span><span class="nx">code</span><span class="p">).</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/[\r\n\t]/g</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s2">&quot;;__p.push(&#39;&quot;</span><span class="p">;</span>
          <span class="p">})</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\r/g</span><span class="p">,</span> <span class="s1">&#39;\\r&#39;</span><span class="p">)</span>
          <span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/\n/g</span><span class="p">,</span> <span class="s1">&#39;\\n&#39;</span><span class="p">)</span>
@@ -590,19 +593,19 @@ and correctly escapes quotes within interpolated code.</p>             </td>
     <span class="k">return</span> <span class="kd">function</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">func</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="k">this</span><span class="p">,</span> <span class="nx">data</span><span class="p">,</span> <span class="nx">_</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-120">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-120">&#182;</a>               </div>               <p>Add a "chain" function, which will delegate to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>Add a "chain" function, which will delegate to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">();</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-121">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-121">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-122">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-122">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <h2>The OOP Wrapper</h2>             </td>             <td class="code">               <div class="highlight"><pre></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>If Underscore is called as a function, it returns a wrapped object that
 can be used OO-style. This wrapper holds altered versions of all the
-underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-123">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-123">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-124">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-124">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
+underscore functions. Wrapped objects may be chained.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">wrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">)</span> <span class="p">{</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span> <span class="o">=</span> <span class="nx">obj</span><span class="p">;</span> <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>Expose <code>wrapper.prototype</code> as <code>_.prototype</code></p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">prototype</span> <span class="o">=</span> <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">;</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Helper function to continue chaining intermediate results.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">result</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">obj</span><span class="p">,</span> <span class="nx">chain</span><span class="p">)</span> <span class="p">{</span>
     <span class="k">return</span> <span class="nx">chain</span> <span class="o">?</span> <span class="nx">_</span><span class="p">(</span><span class="nx">obj</span><span class="p">).</span><span class="nx">chain</span><span class="p">()</span> <span class="o">:</span> <span class="nx">obj</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-125">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-125">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>A method to easily add functions to the OOP wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="kd">var</span> <span class="nx">addToWrapper</span> <span class="o">=</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">,</span> <span class="nx">func</span><span class="p">)</span> <span class="p">{</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">slice</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">arguments</span><span class="p">);</span>
       <span class="nx">unshift</span><span class="p">.</span><span class="nx">call</span><span class="p">(</span><span class="nx">args</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">);</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">func</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="nx">_</span><span class="p">,</span> <span class="nx">args</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-126">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-126">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-127">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-127">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all of the Underscore functions to the wrapper object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">_</span><span class="p">.</span><span class="nx">mixin</span><span class="p">(</span><span class="nx">_</span><span class="p">);</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Add all mutator Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;pop&#39;</span><span class="p">,</span> <span class="s1">&#39;push&#39;</span><span class="p">,</span> <span class="s1">&#39;reverse&#39;</span><span class="p">,</span> <span class="s1">&#39;shift&#39;</span><span class="p">,</span> <span class="s1">&#39;sort&#39;</span><span class="p">,</span> <span class="s1">&#39;splice&#39;</span><span class="p">,</span> <span class="s1">&#39;unshift&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="kd">var</span> <span class="nx">wrapped</span> <span class="o">=</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
@@ -611,15 +614,15 @@ underscore functions. Wrapped objects may be chained.</p>             </td>
       <span class="k">if</span> <span class="p">((</span><span class="nx">name</span> <span class="o">==</span> <span class="s1">&#39;shift&#39;</span> <span class="o">||</span> <span class="nx">name</span> <span class="o">==</span> <span class="s1">&#39;splice&#39;</span><span class="p">)</span> <span class="o">&amp;&amp;</span> <span class="nx">length</span> <span class="o">===</span> <span class="mi">0</span><span class="p">)</span> <span class="k">delete</span> <span class="nx">wrapped</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">wrapped</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-128">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-128">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Add all accessor Array functions to the wrapper.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">each</span><span class="p">([</span><span class="s1">&#39;concat&#39;</span><span class="p">,</span> <span class="s1">&#39;join&#39;</span><span class="p">,</span> <span class="s1">&#39;slice&#39;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">name</span><span class="p">)</span> <span class="p">{</span>
     <span class="kd">var</span> <span class="nx">method</span> <span class="o">=</span> <span class="nx">ArrayProto</span><span class="p">[</span><span class="nx">name</span><span class="p">];</span>
     <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">[</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
       <span class="k">return</span> <span class="nx">result</span><span class="p">(</span><span class="nx">method</span><span class="p">.</span><span class="nx">apply</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">,</span> <span class="nx">arguments</span><span class="p">),</span> <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span><span class="p">);</span>
     <span class="p">};</span>
-  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-129">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-129">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">});</span></pre></div>             </td>           </tr>                               <tr id="section-131">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-131">&#182;</a>               </div>               <p>Start chaining a wrapped Underscore object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">chain</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">this</span><span class="p">.</span><span class="nx">_chain</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">;</span>
-  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-130">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-130">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
+  <span class="p">};</span></pre></div>             </td>           </tr>                               <tr id="section-132">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-132">&#182;</a>               </div>               <p>Extracts the result from a wrapped and chained object.</p>             </td>             <td class="code">               <div class="highlight"><pre>  <span class="nx">wrapper</span><span class="p">.</span><span class="nx">prototype</span><span class="p">.</span><span class="nx">value</span> <span class="o">=</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
     <span class="k">return</span> <span class="k">this</span><span class="p">.</span><span class="nx">_wrapped</span><span class="p">;</span>
   <span class="p">};</span>
 
diff --git a/index.html b/index.html
index 69a6e13be..52c967122 100644
--- a/index.html
+++ b/index.html
@@ -134,7 +134,7 @@
   <div id="sidebar" class="interface">
 
     <a class="toc_title" href="#">
-      Underscore.js <span class="version">(1.3.0)</span>
+      Underscore.js <span class="version">(1.3.1)</span>
     </a>
     
     <a class="toc_title" href="#">
@@ -216,6 +216,7 @@
       <li>- <a href="#defaults">defaults</a></li>
       <li>- <a href="#clone">clone</a></li>
       <li>- <a href="#tap">tap</a></li>
+      <li>- <a href="#has">has</a></li>
       <li>- <a href="#isEqual">isEqual</a></li>
       <li>- <a href="#isEmpty">isEmpty</a></li>
       <li>- <a href="#isElement">isElement</a></li>
@@ -316,11 +317,11 @@
 
     <table>
       <tr>
-        <td><a href="underscore.js">Development Version (1.3.0)</a></td>
+        <td><a href="underscore.js">Development Version (1.3.1)</a></td>
         <td><i>34kb, Uncompressed with Comments</i></td>
       </tr>
       <tr>
-        <td><a href="underscore-min.js">Production Version (1.3.0)</a></td>
+        <td><a href="underscore-min.js">Production Version (1.3.1)</a></td>
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
@@ -350,6 +351,7 @@ _.each({one : 1, two : 2, three : 3}, function(num, key){ alert(num); });
 
       <p id="map">
         <b class="header">map</b><code>_.map(list, iterator, [context])</code>
+        <span class="alias">Alias: <b>collect</b></span>
         <br />
         Produces a new array of values by mapping each value in <b>list</b>
         through a transformation function (<b>iterator</b>). If the native <b>map</b> method
@@ -1048,6 +1050,19 @@ _.chain([1,2,3,200])
   .value();
 =&gt; [2, 200]
 =&gt; [4, 40000]
+</pre>
+
+      <p id="has">
+        <b class="header">has</b><code>_.has(object, key)</code>
+        <br />
+        Does the object contain the given key? Identical to 
+        <tt>object.hasOwnProperty(key)</tt>, but uses a safe reference to the
+        <tt>hasOwnProperty</tt> function, in case it's been 
+        <a href="http://www.devthought.com/2012/01/18/an-object-is-not-a-hash/">overridden accidentally</a>.
+      </p>
+      <pre>
+_.has({a: 1, b: 2, c: 3}, "b");
+=&gt; true
 </pre>
 
       <p id="isEqual">
@@ -1469,6 +1484,25 @@ _([1, 2, 3]).value();
 
       <h2 id="changelog">Change Log</h2>
       
+      <p>
+        <b class="header">1.3.1</b> &mdash; <small><i>Jan. 23, 2012</i></small><br />
+        <ul>
+          <li>
+            Added an <tt>_.has</tt> function, as a safer way to use <tt>hasOwnProperty</tt>.
+          </li>
+          <li>
+            Added <tt>_.collect</tt> as an alias for <tt>_.map</tt>. Smalltalkers, rejoice.
+          </li>
+          <li>
+            Reverted an old change so that <tt>_.extend</tt> will correctly copy 
+            over keys with undefined values again.
+          </li>
+          <li>
+            Bugfix to stop escaping slashes within interpolations in <tt>_.template</tt>.
+          </li>
+        </ul>
+      </p>
+      
       <p>
         <b class="header">1.3.0</b> &mdash; <small><i>Jan. 11, 2012</i></small><br />
         <ul>
diff --git a/package.json b/package.json
index 0749177b4..4a2e3ca72 100644
--- a/package.json
+++ b/package.json
@@ -4,8 +4,7 @@
   "homepage"      : "http://documentcloud.github.com/underscore/",
   "keywords"      : ["util", "functional", "server", "client", "browser"],
   "author"        : "Jeremy Ashkenas <jeremy@documentcloud.org>",
-  "contributors"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.3.0"
+  "version"       : "1.3.1"
 }
diff --git a/underscore-min.js b/underscore-min.js
index fe1ffd20a..5b55f32be 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,31 +1,31 @@
-// Underscore.js 1.3.0
+// Underscore.js 1.3.1
 // (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
-(function(){function r(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual&&b.isFunction(a.isEqual))return a.isEqual(c);if(c.isEqual&&b.isFunction(c.isEqual))return c.isEqual(a);var e=l.call(a);if(e!=l.call(c))return false;switch(e){case "[object String]":return a==String(c);case "[object Number]":return a!=+a?c!=+c:a==0?1/a==1/c:a==+c;case "[object Date]":case "[object Boolean]":return+a==+c;case "[object RegExp]":return a.source==
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+d){if(a==null)return-1;var e;if(d)return d=b.sortedIndex(a,c),a[d]===c?d:-1;if(p&&a.indexOf===p)return a.indexOf(c);for(d=0,e=a.length;d<e;d++)if(d in a&&a[d]===c)return d;return-1};b.lastIndexOf=function(a,b){if(a==null)return-1;if(D&&a.lastIndexOf===D)return a.lastIndexOf(b);for(var d=a.length;d--;)if(d in a&&a[d]===b)return d;return-1};b.range=function(a,b,d){arguments.length<=1&&(b=a||0,a=0);for(var d=arguments[2]||1,e=Math.max(Math.ceil((b-a)/d),0),f=0,g=Array(e);f<e;)g[f++]=a,a+=d;return g};
+var F=function(){};b.bind=function(a,c){var d,e;if(a.bind===s&&s)return s.apply(a,i.call(arguments,1));if(!b.isFunction(a))throw new TypeError;e=i.call(arguments,2);return d=function(){if(!(this instanceof d))return a.apply(c,e.concat(i.call(arguments)));F.prototype=a.prototype;var b=new F,g=a.apply(b,e.concat(i.call(arguments)));return Object(g)===g?g:b}};b.bindAll=function(a){var c=i.call(arguments,1);c.length==0&&(c=b.functions(a));j(c,function(c){a[c]=b.bind(a[c],a)});return a};b.memoize=function(a,
+c){var d={};c||(c=b.identity);return function(){var e=c.apply(this,arguments);return b.has(d,e)?d[e]:d[e]=a.apply(this,arguments)}};b.delay=function(a,b){var d=i.call(arguments,2);return setTimeout(function(){return a.apply(a,d)},b)};b.defer=function(a){return b.delay.apply(b,[a,1].concat(i.call(arguments,1)))};b.throttle=function(a,c){var d,e,f,g,h,i=b.debounce(function(){h=g=false},c);return function(){d=this;e=arguments;var b;f||(f=setTimeout(function(){f=null;h&&a.apply(d,e);i()},c));g?h=true:
+a.apply(d,e);i();g=true}};b.debounce=function(a,b){var d;return function(){var e=this,f=arguments;clearTimeout(d);d=setTimeout(function(){d=null;a.apply(e,f)},b)}};b.once=function(a){var b=false,d;return function(){if(b)return d;b=true;return d=a.apply(this,arguments)}};b.wrap=function(a,b){return function(){var d=[a].concat(i.call(arguments,0));return b.apply(this,d)}};b.compose=function(){var a=arguments;return function(){for(var b=arguments,d=a.length-1;d>=0;d--)b=[a[d].apply(this,b)];return b[0]}};
+b.after=function(a,b){return a<=0?b():function(){if(--a<1)return b.apply(this,arguments)}};b.keys=J||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var c=[],d;for(d in a)b.has(a,d)&&(c[c.length]=d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){var c=[],d;for(d in a)b.isFunction(a[d])&&c.push(d);return c.sort()};b.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)a[d]=b[d]});return a};b.defaults=function(a){j(i.call(arguments,
+1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return!b.isObject(a)?a:b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,b){return q(a,b,[])};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(b.has(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=o||function(a){return l.call(a)=="[object Array]"};b.isObject=function(a){return a===Object(a)};
+b.isArguments=function(a){return l.call(a)=="[object Arguments]"};if(!b.isArguments(arguments))b.isArguments=function(a){return!(!a||!b.has(a,"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};
+b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.has=function(a,b){return I.call(a,b)};b.noConflict=function(){r._=G;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.escape=function(a){return(""+a).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#x27;").replace(/\//g,"&#x2F;")};b.mixin=function(a){j(b.functions(a),
+function(c){K(c,b[c]=a[c])})};var L=0;b.uniqueId=function(a){var b=L++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var t=/.^/,u=function(a){return a.replace(/\\\\/g,"\\").replace(/\\'/g,"'")};b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape||t,function(a,b){return"',_.escape("+
+u(b)+"),'"}).replace(d.interpolate||t,function(a,b){return"',"+u(b)+",'"}).replace(d.evaluate||t,function(a,b){return"');"+u(b).replace(/[\r\n\t]/g," ")+";__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",e=new Function("obj","_",d);return c?e(c,b):function(a){return e.call(this,a,b)}};b.chain=function(a){return b(a).chain()};var m=function(a){this._wrapped=a};b.prototype=m.prototype;var v=function(a,c){return c?b(a).chain():a},K=function(a,c){m.prototype[a]=
+function(){var a=i.call(arguments);H.call(a,this._wrapped);return v(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];m.prototype[a]=function(){var d=this._wrapped;b.apply(d,arguments);var e=d.length;(a=="shift"||a=="splice")&&e===0&&delete d[0];return v(d,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];m.prototype[a]=function(){return v(b.apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=
+true;return this};m.prototype.value=function(){return this._wrapped}}).call(this);
diff --git a/underscore.js b/underscore.js
index 6687ded01..208d4cd89 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.3.0
+//     Underscore.js 1.3.1
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -62,7 +62,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.3.0';
+  _.VERSION = '1.3.1';
 
   // Collection Functions
   // --------------------

From 908c0156312576433732f4a6f8db0ae229b9efdd Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 24 Jan 2012 10:33:14 -0500
Subject: [PATCH 472/533] Fixes #442 -- broken link to Objects/functions on the
 homepage

---
 index.html | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index 52c967122..12d6958d1 100644
--- a/index.html
+++ b/index.html
@@ -211,7 +211,7 @@
     <ul class="toc_section">
       <li>- <a href="#keys">keys</a></li>
       <li>- <a href="#values">values</a></li>
-      <li>- <a href="#functions">functions</a></li>
+      <li>- <a href="#object-functions">functions</a></li>
       <li>- <a href="#extend">extend</a></li>
       <li>- <a href="#defaults">defaults</a></li>
       <li>- <a href="#clone">clone</a></li>
@@ -988,7 +988,7 @@ _.values({one : 1, two : 2, three : 3});
 =&gt; [1, 2, 3]
 </pre>
 
-      <p id="functions">
+      <p id="object-functions">
         <b class="header">functions</b><code>_.functions(object)</code>
         <span class="alias">Alias: <b>methods</b></span>
         <br />
@@ -1906,7 +1906,7 @@ _([1, 2, 3]).value();
         like so: <tt>_([1, 2, 3]).map(...);</tt>. Original patch provided by
         <a href="http://macournoyer.com/">Marc-André Cournoyer</a>.
         Wrapped objects can be chained through multiple
-        method invocations. A <a href="#functions"><tt>functions</tt></a> method
+        method invocations. A <a href="#object-functions"><tt>functions</tt></a> method
         was added, providing a sorted list of all the functions in Underscore.
       </p>
 

From 3512e7fc5c1164a5f6d1f4dc450d0e3895770255 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 24 Jan 2012 10:40:20 -0500
Subject: [PATCH 473/533] Fixes #435 -- allows _.max and _.min on arrays of
 dates without converting them to numbers.

---
 test/collections.js | 8 +++++++-
 underscore.js       | 4 ++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index cff9763ce..838c0cf4d 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -185,7 +185,9 @@ $(document).ready(function() {
 
   // Relevant when using ClojureScript
   test('collections: invoke when strings have a call method', function() {
-    String.prototype.call = function(){return 42;}
+    String.prototype.call = function() {
+      return 42;
+    };
     var list = [[5, 1, 7], [3, 2, 1]];
     var s = "foo";
     equals(s.call(), 42, "call function exists");
@@ -219,6 +221,10 @@ $(document).ready(function() {
 
     equals(Infinity, _.min({}), 'Minimum value of an empty object');
     equals(Infinity, _.min([]), 'Minimum value of an empty array');
+
+    var now = new Date(9999999999);
+    var then = new Date(0);
+    equals(_.min([now, then]), then);
   });
 
   test('collections: sortBy', function() {
diff --git a/underscore.js b/underscore.js
index 208d4cd89..a24750d19 100644
--- a/underscore.js
+++ b/underscore.js
@@ -224,7 +224,7 @@
 
   // Return the maximum element or (element-based computation).
   _.max = function(obj, iterator, context) {
-    if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.max.apply(Math, obj);
     if (!iterator && _.isEmpty(obj)) return -Infinity;
     var result = {computed : -Infinity};
     each(obj, function(value, index, list) {
@@ -236,7 +236,7 @@
 
   // Return the minimum element (or element-based computation).
   _.min = function(obj, iterator, context) {
-    if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0]) return Math.min.apply(Math, obj);
     if (!iterator && _.isEmpty(obj)) return Infinity;
     var result = {computed : Infinity};
     each(obj, function(value, index, list) {

From ae3720d2001c2d6b70a9759ec46fb4233aca6812 Mon Sep 17 00:00:00 2001
From: Mark Rushakoff <mark.rushakoff@gmail.com>
Date: Wed, 25 Jan 2012 20:56:16 -0800
Subject: [PATCH 474/533] Clarify docs: return value of uniqueId

---
 index.html | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.html b/index.html
index 12d6958d1..dd963c707 100644
--- a/index.html
+++ b/index.html
@@ -1278,6 +1278,7 @@ _("fabio").capitalize();
         <br />
         Generate a globally-unique id for client-side models or DOM elements
         that need one. If <b>prefix</b> is passed, the id will be appended to it.
+        Without <b>prefix</b>, returns an integer.
       </p>
       <pre>
 _.uniqueId('contact_');

From 7a2e45eb3a47506004b1d4d864106645fd7e7740 Mon Sep 17 00:00:00 2001
From: bjh <brodie.hanbuch@gmail.com>
Date: Thu, 26 Jan 2012 15:57:52 -0500
Subject: [PATCH 475/533] added documentation for _.isObject

---
 index.html | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index dd963c707..3aa65a58a 100644
--- a/index.html
+++ b/index.html
@@ -231,6 +231,7 @@
       <li>- <a href="#isNaN">isNaN</a></li>
       <li>- <a href="#isNull">isNull</a></li>
       <li>- <a href="#isUndefined">isUndefined</a></li>
+      <li>- <a href="#isObject">isObject</a></li>
     </ul>
 
     <a class="toc_title" href="#utility">
@@ -1223,7 +1224,17 @@ _.isNull(undefined);
 _.isUndefined(window.missingVariable);
 =&gt; true
 </pre>
-
+      
+      <p id="isObject">
+        <b class="header">isObject</b><code>_.isObject(variable)</code>
+        <br />
+        Returns <i>true</i> if <b>variable</b> is an <i>object</i>.
+      </p>
+      <pre>
+_.isObject({});
+=&gt; true
+</pre>
+      
       <h2 id="utility">Utility Functions</h2>
 
       <p id="noConflict">

From 53829cbd5c51e3319b843130890fbef0abd951c9 Mon Sep 17 00:00:00 2001
From: bjh <brodie.hanbuch@gmail.com>
Date: Thu, 26 Jan 2012 16:04:58 -0500
Subject: [PATCH 476/533] added a false case for the isObject test
 documentation

---
 index.html | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/index.html b/index.html
index 3aa65a58a..b19f774c5 100644
--- a/index.html
+++ b/index.html
@@ -1233,6 +1233,8 @@ _.isUndefined(window.missingVariable);
       <pre>
 _.isObject({});
 =&gt; true
+_.isObject('am I an object?');
+=&gt; false
 </pre>
       
       <h2 id="utility">Utility Functions</h2>

From bdb3cb21f9aacf7de53169c99563b471f985b82d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 30 Jan 2012 10:01:08 -0500
Subject: [PATCH 477/533] fixing isObject documentation.

---
 index.html | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/index.html b/index.html
index b19f774c5..181e10983 100644
--- a/index.html
+++ b/index.html
@@ -221,6 +221,7 @@
       <li>- <a href="#isEmpty">isEmpty</a></li>
       <li>- <a href="#isElement">isElement</a></li>
       <li>- <a href="#isArray">isArray</a></li>
+      <li>- <a href="#isObject">isObject</a></li>
       <li>- <a href="#isArguments">isArguments</a></li>
       <li>- <a href="#isFunction">isFunction</a></li>
       <li>- <a href="#isString">isString</a></li>
@@ -231,7 +232,6 @@
       <li>- <a href="#isNaN">isNaN</a></li>
       <li>- <a href="#isNull">isNull</a></li>
       <li>- <a href="#isUndefined">isUndefined</a></li>
-      <li>- <a href="#isObject">isObject</a></li>
     </ul>
 
     <a class="toc_title" href="#utility">
@@ -1113,6 +1113,18 @@ _.isElement(jQuery('body')[0]);
 =&gt; false
 _.isArray([1,2,3]);
 =&gt; true
+</pre>
+
+      <p id="isObject">
+        <b class="header">isObject</b><code>_.isObject(value)</code>
+        <br />
+        Returns <i>true</i> if <b>value</b> is an Object.
+      </p>
+      <pre>
+_.isObject({});
+=&gt; true
+_.isObject(1);
+=&gt; false
 </pre>
 
       <p id="isArguments">
@@ -1223,18 +1235,6 @@ _.isNull(undefined);
       <pre>
 _.isUndefined(window.missingVariable);
 =&gt; true
-</pre>
-      
-      <p id="isObject">
-        <b class="header">isObject</b><code>_.isObject(variable)</code>
-        <br />
-        Returns <i>true</i> if <b>variable</b> is an <i>object</i>.
-      </p>
-      <pre>
-_.isObject({});
-=&gt; true
-_.isObject('am I an object?');
-=&gt; false
 </pre>
       
       <h2 id="utility">Utility Functions</h2>

From 5c6abc4453f3bdf9470bd98ec79d7f22105f87e3 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 30 Jan 2012 10:15:04 -0500
Subject: [PATCH 478/533] short circuit `isEmpty` for null/undefined

---
 underscore.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/underscore.js b/underscore.js
index a24750d19..c4e8c8a59 100644
--- a/underscore.js
+++ b/underscore.js
@@ -761,6 +761,7 @@
   // Is a given array, string, or object empty?
   // An "empty" object has no enumerable own-properties.
   _.isEmpty = function(obj) {
+    if (obj == null) return true;
     if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
     for (var key in obj) if (_.has(obj, key)) return false;
     return true;

From 458e604eee649aa0ee18cadfe96cd0e2b2739cb5 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 30 Jan 2012 10:30:06 -0500
Subject: [PATCH 479/533] upgrade qunit

---
 test/arrays.js        |  120 +--
 test/chaining.js      |    6 +-
 test/collections.js   |  108 +--
 test/functions.js     |   48 +-
 test/objects.js       |   42 +-
 test/utility.js       |   58 +-
 test/vendor/qunit.css |   54 +-
 test/vendor/qunit.js  | 1867 ++++++++++++-----------------------------
 8 files changed, 785 insertions(+), 1518 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index b3b1ce15e..54cd9f8d2 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -3,69 +3,69 @@ $(document).ready(function() {
   module("Arrays");
 
   test("arrays: first", function() {
-    equals(_.first([1,2,3]), 1, 'can pull out the first element of an array');
-    equals(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"');
-    equals(_.first([1,2,3], 0).join(', '), "", 'can pass an index to first');
-    equals(_.first([1,2,3], 2).join(', '), '1, 2', 'can pass an index to first');
-    equals(_.first([1,2,3], 5).join(', '), '1, 2, 3', 'can pass an index to first');
+    equal(_.first([1,2,3]), 1, 'can pull out the first element of an array');
+    equal(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"');
+    equal(_.first([1,2,3], 0).join(', '), "", 'can pass an index to first');
+    equal(_.first([1,2,3], 2).join(', '), '1, 2', 'can pass an index to first');
+    equal(_.first([1,2,3], 5).join(', '), '1, 2, 3', 'can pass an index to first');
     var result = (function(){ return _.first(arguments); })(4, 3, 2, 1);
-    equals(result, 4, 'works on an arguments object.');
+    equal(result, 4, 'works on an arguments object.');
     result = _.map([[1,2,3],[1,2,3]], _.first);
-    equals(result.join(','), '1,1', 'works well with _.map');
+    equal(result.join(','), '1,1', 'works well with _.map');
   });
 
   test("arrays: rest", function() {
     var numbers = [1, 2, 3, 4];
-    equals(_.rest(numbers).join(", "), "2, 3, 4", 'working rest()');
-    equals(_.rest(numbers, 0).join(", "), "1, 2, 3, 4", 'working rest(0)');
-    equals(_.rest(numbers, 2).join(', '), '3, 4', 'rest can take an index');
+    equal(_.rest(numbers).join(", "), "2, 3, 4", 'working rest()');
+    equal(_.rest(numbers, 0).join(", "), "1, 2, 3, 4", 'working rest(0)');
+    equal(_.rest(numbers, 2).join(', '), '3, 4', 'rest can take an index');
     var result = (function(){ return _(arguments).tail(); })(1, 2, 3, 4);
-    equals(result.join(', '), '2, 3, 4', 'aliased as tail and works on arguments object');
+    equal(result.join(', '), '2, 3, 4', 'aliased as tail and works on arguments object');
     result = _.map([[1,2,3],[1,2,3]], _.rest);
-    equals(_.flatten(result).join(','), '2,3,2,3', 'works well with _.map');
+    equal(_.flatten(result).join(','), '2,3,2,3', 'works well with _.map');
   });
 
   test("arrays: initial", function() {
-    equals(_.initial([1,2,3,4,5]).join(", "), "1, 2, 3, 4", 'working initial()');
-    equals(_.initial([1,2,3,4],2).join(", "), "1, 2", 'initial can take an index');
+    equal(_.initial([1,2,3,4,5]).join(", "), "1, 2, 3, 4", 'working initial()');
+    equal(_.initial([1,2,3,4],2).join(", "), "1, 2", 'initial can take an index');
     var result = (function(){ return _(arguments).initial(); })(1, 2, 3, 4);
-    equals(result.join(", "), "1, 2, 3", 'initial works on arguments object');
+    equal(result.join(", "), "1, 2, 3", 'initial works on arguments object');
     result = _.map([[1,2,3],[1,2,3]], _.initial);
-    equals(_.flatten(result).join(','), '1,2,1,2', 'initial works with _.map');
+    equal(_.flatten(result).join(','), '1,2,1,2', 'initial works with _.map');
   });
 
   test("arrays: last", function() {
-    equals(_.last([1,2,3]), 3, 'can pull out the last element of an array');
-    equals(_.last([1,2,3], 0).join(', '), "", 'can pass an index to last');
-    equals(_.last([1,2,3], 2).join(', '), '2, 3', 'can pass an index to last');
-    equals(_.last([1,2,3], 5).join(', '), '1, 2, 3', 'can pass an index to last');
+    equal(_.last([1,2,3]), 3, 'can pull out the last element of an array');
+    equal(_.last([1,2,3], 0).join(', '), "", 'can pass an index to last');
+    equal(_.last([1,2,3], 2).join(', '), '2, 3', 'can pass an index to last');
+    equal(_.last([1,2,3], 5).join(', '), '1, 2, 3', 'can pass an index to last');
     var result = (function(){ return _(arguments).last(); })(1, 2, 3, 4);
-    equals(result, 4, 'works on an arguments object');
+    equal(result, 4, 'works on an arguments object');
     result = _.map([[1,2,3],[1,2,3]], _.last);
-    equals(result.join(','), '3,3', 'works well with _.map');
+    equal(result.join(','), '3,3', 'works well with _.map');
   });
 
   test("arrays: compact", function() {
-    equals(_.compact([0, 1, false, 2, false, 3]).length, 3, 'can trim out all falsy values');
+    equal(_.compact([0, 1, false, 2, false, 3]).length, 3, 'can trim out all falsy values');
     var result = (function(){ return _(arguments).compact().length; })(0, 1, false, 2, false, 3);
-    equals(result, 3, 'works on an arguments object');
+    equal(result, 3, 'works on an arguments object');
   });
 
   test("arrays: flatten", function() {
     if (window.JSON) {
       var list = [1, [2], [3, [[[4]]]]];
-      equals(JSON.stringify(_.flatten(list)), '[1,2,3,4]', 'can flatten nested arrays');
-      equals(JSON.stringify(_.flatten(list, true)), '[1,2,3,[[[4]]]]', 'can shallowly flatten nested arrays');
+      equal(JSON.stringify(_.flatten(list)), '[1,2,3,4]', 'can flatten nested arrays');
+      equal(JSON.stringify(_.flatten(list, true)), '[1,2,3,[[[4]]]]', 'can shallowly flatten nested arrays');
       var result = (function(){ return _.flatten(arguments); })(1, [2], [3, [[[4]]]]);
-      equals(JSON.stringify(result), '[1,2,3,4]', 'works on an arguments object');
+      equal(JSON.stringify(result), '[1,2,3,4]', 'works on an arguments object');
     }
   });
 
   test("arrays: without", function() {
     var list = [1, 2, 1, 0, 3, 1, 4];
-    equals(_.without(list, 0, 1).join(', '), '2, 3, 4', 'can remove all instances of an object');
+    equal(_.without(list, 0, 1).join(', '), '2, 3, 4', 'can remove all instances of an object');
     var result = (function(){ return _.without(arguments, 0, 1); })(1, 2, 1, 0, 3, 1, 4);
-    equals(result.join(', '), '2, 3, 4', 'works on an arguments object');
+    equal(result.join(', '), '2, 3, 4', 'works on an arguments object');
 
     var list = [{one : 1}, {two : 2}];
     ok(_.without(list, {one : 1}).length == 2, 'uses real object identity for comparisons.');
@@ -74,93 +74,93 @@ $(document).ready(function() {
 
   test("arrays: uniq", function() {
     var list = [1, 2, 1, 3, 1, 4];
-    equals(_.uniq(list).join(', '), '1, 2, 3, 4', 'can find the unique values of an unsorted array');
+    equal(_.uniq(list).join(', '), '1, 2, 3, 4', 'can find the unique values of an unsorted array');
 
     var list = [1, 1, 1, 2, 2, 3];
-    equals(_.uniq(list, true).join(', '), '1, 2, 3', 'can find the unique values of a sorted array faster');
+    equal(_.uniq(list, true).join(', '), '1, 2, 3', 'can find the unique values of a sorted array faster');
 
     var list = [{name:'moe'}, {name:'curly'}, {name:'larry'}, {name:'curly'}];
     var iterator = function(value) { return value.name; };
-    equals(_.map(_.uniq(list, false, iterator), iterator).join(', '), 'moe, curly, larry', 'can find the unique values of an array using a custom iterator');
+    equal(_.map(_.uniq(list, false, iterator), iterator).join(', '), 'moe, curly, larry', 'can find the unique values of an array using a custom iterator');
 
     var iterator = function(value) { return value +1; };
     var list = [1, 2, 2, 3, 4, 4];
-    equals(_.uniq(list, true, iterator).join(', '), '1, 2, 3, 4', 'iterator works with sorted array');
+    equal(_.uniq(list, true, iterator).join(', '), '1, 2, 3, 4', 'iterator works with sorted array');
 
     var result = (function(){ return _.uniq(arguments); })(1, 2, 1, 3, 1, 4);
-    equals(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
+    equal(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
   });
 
   test("arrays: intersection", function() {
     var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho'];
-    equals(_.intersection(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
-    equals(_(stooges).intersection(leaders).join(''), 'moe', 'can perform an OO-style intersection');
+    equal(_.intersection(stooges, leaders).join(''), 'moe', 'can take the set intersection of two arrays');
+    equal(_(stooges).intersection(leaders).join(''), 'moe', 'can perform an OO-style intersection');
     var result = (function(){ return _.intersection(arguments, leaders); })('moe', 'curly', 'larry');
-    equals(result.join(''), 'moe', 'works on an arguments object');
+    equal(result.join(''), 'moe', 'works on an arguments object');
   });
 
   test("arrays: union", function() {
     var result = _.union([1, 2, 3], [2, 30, 1], [1, 40]);
-    equals(result.join(' '), '1 2 3 30 40', 'takes the union of a list of arrays');
+    equal(result.join(' '), '1 2 3 30 40', 'takes the union of a list of arrays');
 
     var result = _.union([1, 2, 3], [2, 30, 1], [1, 40, [1]]);
-    equals(result.join(' '), '1 2 3 30 40 1', 'takes the union of a list of nested arrays');
+    equal(result.join(' '), '1 2 3 30 40 1', 'takes the union of a list of nested arrays');
   });
 
   test("arrays: difference", function() {
     var result = _.difference([1, 2, 3], [2, 30, 40]);
-    equals(result.join(' '), '1 3', 'takes the difference of two arrays');
+    equal(result.join(' '), '1 3', 'takes the difference of two arrays');
 
     var result = _.difference([1, 2, 3, 4], [2, 30, 40], [1, 11, 111]);
-    equals(result.join(' '), '3 4', 'takes the difference of three arrays');
+    equal(result.join(' '), '3 4', 'takes the difference of three arrays');
   });
 
   test('arrays: zip', function() {
     var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true];
     var stooges = _.zip(names, ages, leaders);
-    equals(String(stooges), 'moe,30,true,larry,40,,curly,50,', 'zipped together arrays of different lengths');
+    equal(String(stooges), 'moe,30,true,larry,40,,curly,50,', 'zipped together arrays of different lengths');
   });
 
   test("arrays: indexOf", function() {
     var numbers = [1, 2, 3];
     numbers.indexOf = null;
-    equals(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
+    equal(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
     var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
-    equals(result, 1, 'works on an arguments object');
-    equals(_.indexOf(null, 2), -1, 'handles nulls properly');
+    equal(result, 1, 'works on an arguments object');
+    equal(_.indexOf(null, 2), -1, 'handles nulls properly');
 
     var numbers = [10, 20, 30, 40, 50], num = 35;
     var index = _.indexOf(numbers, num, true);
-    equals(index, -1, '35 is not in the list');
+    equal(index, -1, '35 is not in the list');
 
     numbers = [10, 20, 30, 40, 50]; num = 40;
     index = _.indexOf(numbers, num, true);
-    equals(index, 3, '40 is in the list');
+    equal(index, 3, '40 is in the list');
 
     numbers = [1, 40, 40, 40, 40, 40, 40, 40, 50, 60, 70]; num = 40;
     index = _.indexOf(numbers, num, true);
-    equals(index, 1, '40 is in the list');
+    equal(index, 1, '40 is in the list');
   });
 
   test("arrays: lastIndexOf", function() {
     var numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0];
     numbers.lastIndexOf = null;
-    equals(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function');
-    equals(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
+    equal(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function');
+    equal(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
     var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
-    equals(result, 5, 'works on an arguments object');
-    equals(_.indexOf(null, 2), -1, 'handles nulls properly');
+    equal(result, 5, 'works on an arguments object');
+    equal(_.indexOf(null, 2), -1, 'handles nulls properly');
   });
 
   test("arrays: range", function() {
-    equals(_.range(0).join(''), '', 'range with 0 as a first argument generates an empty array');
-    equals(_.range(4).join(' '), '0 1 2 3', 'range with a single positive argument generates an array of elements 0,1,2,...,n-1');
-    equals(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a &amp; b, a&lt;b generates an array of elements a,a+1,a+2,...,b-2,b-1');
-    equals(_.range(8, 5).join(''), '', 'range with two arguments a &amp; b, b&lt;a generates an empty array');
-    equals(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a &amp; b &amp; c, c &lt; b-a, a &lt; b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) &lt; c');
-    equals(_.range(3, 10, 15).join(''), '3', 'range with three arguments a &amp; b &amp; c, c &gt; b-a, a &lt; b generates an array with a single element, equal to a');
-    equals(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a &amp; b &amp; c, a &gt; b, c &lt; 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
-    equals(_.range(0, -10, -1).join(' '), '0 -1 -2 -3 -4 -5 -6 -7 -8 -9', 'final example in the Python docs');
+    equal(_.range(0).join(''), '', 'range with 0 as a first argument generates an empty array');
+    equal(_.range(4).join(' '), '0 1 2 3', 'range with a single positive argument generates an array of elements 0,1,2,...,n-1');
+    equal(_.range(5, 8).join(' '), '5 6 7', 'range with two arguments a &amp; b, a&lt;b generates an array of elements a,a+1,a+2,...,b-2,b-1');
+    equal(_.range(8, 5).join(''), '', 'range with two arguments a &amp; b, b&lt;a generates an empty array');
+    equal(_.range(3, 10, 3).join(' '), '3 6 9', 'range with three arguments a &amp; b &amp; c, c &lt; b-a, a &lt; b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) &lt; c');
+    equal(_.range(3, 10, 15).join(''), '3', 'range with three arguments a &amp; b &amp; c, c &gt; b-a, a &lt; b generates an array with a single element, equal to a');
+    equal(_.range(12, 7, -2).join(' '), '12 10 8', 'range with three arguments a &amp; b &amp; c, a &gt; b, c &lt; 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b');
+    equal(_.range(0, -10, -1).join(' '), '0 -1 -2 -3 -4 -5 -6 -7 -8 -9', 'final example in the Python docs');
   });
 
 });
diff --git a/test/chaining.js b/test/chaining.js
index 0e3d5f385..257587224 100644
--- a/test/chaining.js
+++ b/test/chaining.js
@@ -29,7 +29,7 @@ $(document).ready(function() {
     }).sortBy(function(n) {
       return -n;
     }).value();
-    equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
+    equal(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
   });
 
   test("chaining: select/reject/sortBy in functional style", function() {
@@ -41,7 +41,7 @@ $(document).ready(function() {
     }).sortBy(function(n) {
       return -n;
     }).value();
-    equals(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
+    equal(numbers.join(', '), "10, 6, 2", "filtered and reversed the numbers");
   });
 
   test("chaining: reverse/concat/unshift/pop/map", function() {
@@ -53,7 +53,7 @@ $(document).ready(function() {
       .pop()
       .map(function(n){ return n * 2; })
       .value();
-    equals(numbers.join(', '), "34, 10, 8, 6, 4, 2, 10, 10", 'can chain together array functions.');
+    equal(numbers.join(', '), "34, 10, 8, 6, 4, 2, 10, 10", 'can chain together array functions.');
   });
 
 });
diff --git a/test/collections.js b/test/collections.js
index 838c0cf4d..3f623b4d9 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -4,22 +4,22 @@ $(document).ready(function() {
 
   test("collections: each", function() {
     _.each([1, 2, 3], function(num, i) {
-      equals(num, i + 1, 'each iterators provide value and iteration count');
+      equal(num, i + 1, 'each iterators provide value and iteration count');
     });
 
     var answers = [];
     _.each([1, 2, 3], function(num){ answers.push(num * this.multiplier);}, {multiplier : 5});
-    equals(answers.join(', '), '5, 10, 15', 'context object property accessed');
+    equal(answers.join(', '), '5, 10, 15', 'context object property accessed');
 
     answers = [];
     _.forEach([1, 2, 3], function(num){ answers.push(num); });
-    equals(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
+    equal(answers.join(', '), '1, 2, 3', 'aliased as "forEach"');
 
     answers = [];
     var obj = {one : 1, two : 2, three : 3};
     obj.constructor.prototype.four = 4;
     _.each(obj, function(value, key){ answers.push(key); });
-    equals(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
+    equal(answers.join(", "), 'one, two, three', 'iterating over objects works, and ignores the object prototype.');
     delete obj.constructor.prototype.four;
 
     answer = null;
@@ -28,21 +28,21 @@ $(document).ready(function() {
 
     answers = 0;
     _.each(null, function(){ ++answers; });
-    equals(answers, 0, 'handles a null properly');
+    equal(answers, 0, 'handles a null properly');
   });
 
   test('collections: map', function() {
     var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
-    equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
+    equal(doubled.join(', '), '2, 4, 6', 'doubled numbers');
 
     doubled = _.collect([1, 2, 3], function(num){ return num * 2; });
-    equals(doubled.join(', '), '2, 4, 6', 'aliased as "collect"');
+    equal(doubled.join(', '), '2, 4, 6', 'aliased as "collect"');
 
     var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
-    equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
+    equal(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');
 
     var doubled = _([1, 2, 3]).map(function(num){ return num * 2; });
-    equals(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
+    equal(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
 
     var ids = _.map($('div.underscore-test').children(), function(n){ return n.id; });
     ok(_.include(ids, 'qunit-header'), 'can use collection methods on NodeLists');
@@ -54,25 +54,25 @@ $(document).ready(function() {
     ok(_.isArray(ifnull) && ifnull.length === 0, 'handles a null properly');
 
     var length = _.map(Array(2), function(v) { return v; }).length;
-    equals(length, 2, "can preserve a sparse array's length");
+    equal(length, 2, "can preserve a sparse array's length");
   });
 
   test('collections: reduce', function() {
     var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; }, 0);
-    equals(sum, 6, 'can sum up an array');
+    equal(sum, 6, 'can sum up an array');
 
     var context = {multiplier : 3};
     sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num * this.multiplier; }, 0, context);
-    equals(sum, 18, 'can reduce with a context object');
+    equal(sum, 18, 'can reduce with a context object');
 
     sum = _.inject([1, 2, 3], function(sum, num){ return sum + num; }, 0);
-    equals(sum, 6, 'aliased as "inject"');
+    equal(sum, 6, 'aliased as "inject"');
 
     sum = _([1, 2, 3]).reduce(function(sum, num){ return sum + num; }, 0);
-    equals(sum, 6, 'OO-style reduce');
+    equal(sum, 6, 'OO-style reduce');
 
     var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
-    equals(sum, 6, 'default initial value');
+    equal(sum, 6, 'default initial value');
 
     var ifnull;
     try {
@@ -83,24 +83,24 @@ $(document).ready(function() {
     ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
 
     ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
-    equals(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+    equal(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
     raises(function() { _.reduce([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
     var sparseArray = [];
     sparseArray[0] = 20;
     sparseArray[2] = -5;
-    equals(_.reduce(sparseArray, function(a, b){ return a - b; }), 25, 'initially-sparse arrays with no memo');
+    equal(_.reduce(sparseArray, function(a, b){ return a - b; }), 25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: reduceRight', function() {
     var list = _.reduceRight(["foo", "bar", "baz"], function(memo, str){ return memo + str; }, '');
-    equals(list, 'bazbarfoo', 'can perform right folds');
+    equal(list, 'bazbarfoo', 'can perform right folds');
 
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; }, '');
-    equals(list, 'bazbarfoo', 'aliased as "foldr"');
+    equal(list, 'bazbarfoo', 'aliased as "foldr"');
 
     var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
-    equals(list, 'bazbarfoo', 'default initial value');
+    equal(list, 'bazbarfoo', 'default initial value');
 
     var ifnull;
     try {
@@ -112,31 +112,31 @@ $(document).ready(function() {
 
     ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
 
-    equals(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
+    equal(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
     raises(function() { _.reduceRight([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
 
     var sparseArray = [];
     sparseArray[0] = 20;
     sparseArray[2] = -5;
-    equals(_.reduceRight(sparseArray, function(a, b){ return a - b; }), -25, 'initially-sparse arrays with no memo');
+    equal(_.reduceRight(sparseArray, function(a, b){ return a - b; }), -25, 'initially-sparse arrays with no memo');
   });
 
   test('collections: detect', function() {
     var result = _.detect([1, 2, 3], function(num){ return num * 2 == 4; });
-    equals(result, 2, 'found the first "2" and broke the loop');
+    equal(result, 2, 'found the first "2" and broke the loop');
   });
 
   test('collections: select', function() {
     var evens = _.select([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-    equals(evens.join(', '), '2, 4, 6', 'selected each even number');
+    equal(evens.join(', '), '2, 4, 6', 'selected each even number');
 
     evens = _.filter([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-    equals(evens.join(', '), '2, 4, 6', 'aliased as "filter"');
+    equal(evens.join(', '), '2, 4, 6', 'aliased as "filter"');
   });
 
   test('collections: reject', function() {
     var odds = _.reject([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });
-    equals(odds.join(', '), '1, 3, 5', 'rejected each even number');
+    equal(odds.join(', '), '1, 3, 5', 'rejected each even number');
   });
 
   test('collections: all', function() {
@@ -172,15 +172,15 @@ $(document).ready(function() {
   test('collections: invoke', function() {
     var list = [[5, 1, 7], [3, 2, 1]];
     var result = _.invoke(list, 'sort');
-    equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
-    equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
+    equal(result[0].join(', '), '1, 5, 7', 'first array sorted');
+    equal(result[1].join(', '), '1, 2, 3', 'second array sorted');
   });
 
   test('collections: invoke w/ function reference', function() {
     var list = [[5, 1, 7], [3, 2, 1]];
     var result = _.invoke(list, Array.prototype.sort);
-    equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
-    equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
+    equal(result[0].join(', '), '1, 5, 7', 'first array sorted');
+    equal(result[1].join(', '), '1, 2, 3', 'second array sorted');
   });
 
   // Relevant when using ClojureScript
@@ -190,72 +190,72 @@ $(document).ready(function() {
     };
     var list = [[5, 1, 7], [3, 2, 1]];
     var s = "foo";
-    equals(s.call(), 42, "call function exists");
+    equal(s.call(), 42, "call function exists");
     var result = _.invoke(list, 'sort');
-    equals(result[0].join(', '), '1, 5, 7', 'first array sorted');
-    equals(result[1].join(', '), '1, 2, 3', 'second array sorted');
+    equal(result[0].join(', '), '1, 5, 7', 'first array sorted');
+    equal(result[1].join(', '), '1, 2, 3', 'second array sorted');
     delete String.prototype.call;
-    equals(s.call, undefined, "call function removed");
+    equal(s.call, undefined, "call function removed");
   });
 
   test('collections: pluck', function() {
     var people = [{name : 'moe', age : 30}, {name : 'curly', age : 50}];
-    equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'pulls names out of objects');
+    equal(_.pluck(people, 'name').join(', '), 'moe, curly', 'pulls names out of objects');
   });
 
   test('collections: max', function() {
-    equals(3, _.max([1, 2, 3]), 'can perform a regular Math.max');
+    equal(3, _.max([1, 2, 3]), 'can perform a regular Math.max');
 
     var neg = _.max([1, 2, 3], function(num){ return -num; });
-    equals(neg, 1, 'can perform a computation-based max');
+    equal(neg, 1, 'can perform a computation-based max');
 
-    equals(-Infinity, _.max({}), 'Maximum value of an empty object');
-    equals(-Infinity, _.max([]), 'Maximum value of an empty array');
+    equal(-Infinity, _.max({}), 'Maximum value of an empty object');
+    equal(-Infinity, _.max([]), 'Maximum value of an empty array');
   });
 
   test('collections: min', function() {
-    equals(1, _.min([1, 2, 3]), 'can perform a regular Math.min');
+    equal(1, _.min([1, 2, 3]), 'can perform a regular Math.min');
 
     var neg = _.min([1, 2, 3], function(num){ return -num; });
-    equals(neg, 3, 'can perform a computation-based min');
+    equal(neg, 3, 'can perform a computation-based min');
 
-    equals(Infinity, _.min({}), 'Minimum value of an empty object');
-    equals(Infinity, _.min([]), 'Minimum value of an empty array');
+    equal(Infinity, _.min({}), 'Minimum value of an empty object');
+    equal(Infinity, _.min([]), 'Minimum value of an empty array');
 
     var now = new Date(9999999999);
     var then = new Date(0);
-    equals(_.min([now, then]), then);
+    equal(_.min([now, then]), then);
   });
 
   test('collections: sortBy', function() {
     var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}];
     people = _.sortBy(people, function(person){ return person.age; });
-    equals(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
+    equal(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
   });
 
   test('collections: groupBy', function() {
     var parity = _.groupBy([1, 2, 3, 4, 5, 6], function(num){ return num % 2; });
     ok('0' in parity && '1' in parity, 'created a group for each value');
-    equals(parity[0].join(', '), '2, 4, 6', 'put each even number in the right group');
+    equal(parity[0].join(', '), '2, 4, 6', 'put each even number in the right group');
 
     var list = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"];
     var grouped = _.groupBy(list, 'length');
-    equals(grouped['3'].join(' '), 'one two six ten');
-    equals(grouped['4'].join(' '), 'four five nine');
-    equals(grouped['5'].join(' '), 'three seven eight');
+    equal(grouped['3'].join(' '), 'one two six ten');
+    equal(grouped['4'].join(' '), 'four five nine');
+    equal(grouped['5'].join(' '), 'three seven eight');
   });
 
   test('collections: sortedIndex', function() {
     var numbers = [10, 20, 30, 40, 50], num = 35;
     var index = _.sortedIndex(numbers, num);
-    equals(index, 3, '35 should be inserted at index 3');
+    equal(index, 3, '35 should be inserted at index 3');
   });
 
   test('collections: shuffle', function() {
     var numbers = _.range(10);
 	var shuffled = _.shuffle(numbers).sort();
 	notStrictEqual(numbers, shuffled, 'original object is unmodified');
-    equals(shuffled.join(','), numbers.join(','), 'contains the same members before and after shuffle');
+    equal(shuffled.join(','), numbers.join(','), 'contains the same members before and after shuffle');
   });
 
   test('collections: toArray', function() {
@@ -263,14 +263,14 @@ $(document).ready(function() {
     ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
     var a = [1,2,3];
     ok(_.toArray(a) !== a, 'array is cloned');
-    equals(_.toArray(a).join(', '), '1, 2, 3', 'cloned array contains same elements');
+    equal(_.toArray(a).join(', '), '1, 2, 3', 'cloned array contains same elements');
 
     var numbers = _.toArray({one : 1, two : 2, three : 3});
-    equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');
+    equal(numbers.join(', '), '1, 2, 3', 'object flattened into array');
   });
 
   test('collections: size', function() {
-    equals(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
+    equal(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
   });
 
 });
diff --git a/test/functions.js b/test/functions.js
index 78721af16..e6c402a18 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -6,26 +6,26 @@ $(document).ready(function() {
     var context = {name : 'moe'};
     var func = function(arg) { return "name: " + (this.name || arg); };
     var bound = _.bind(func, context);
-    equals(bound(), 'name: moe', 'can bind a function to a context');
+    equal(bound(), 'name: moe', 'can bind a function to a context');
 
     bound = _(func).bind(context);
-    equals(bound(), 'name: moe', 'can do OO-style binding');
+    equal(bound(), 'name: moe', 'can do OO-style binding');
 
     bound = _.bind(func, null, 'curly');
-    equals(bound(), 'name: curly', 'can bind without specifying a context');
+    equal(bound(), 'name: curly', 'can bind without specifying a context');
 
     func = function(salutation, name) { return salutation + ': ' + name; };
     func = _.bind(func, this, 'hello');
-    equals(func('moe'), 'hello: moe', 'the function was partially applied in advance');
+    equal(func('moe'), 'hello: moe', 'the function was partially applied in advance');
 
     var func = _.bind(func, this, 'curly');
-    equals(func(), 'hello: curly', 'the function was completely applied in advance');
+    equal(func(), 'hello: curly', 'the function was completely applied in advance');
 
     var func = function(salutation, firstname, lastname) { return salutation + ': ' + firstname + ' ' + lastname; };
     func = _.bind(func, this, 'hello', 'moe', 'curly');
-    equals(func(), 'hello: moe curly', 'the function was partially applied in advance and can accept multiple arguments');
+    equal(func(), 'hello: moe curly', 'the function was partially applied in advance and can accept multiple arguments');
 
-    func = function(context, message) { equals(this, context, message); };
+    func = function(context, message) { equal(this, context, message); };
     _.bind(func, 0, 0, 'can bind a function to `0`')();
     _.bind(func, '', '', 'can bind a function to an empty string')();
     _.bind(func, false, false, 'can bind a function to `false`')();
@@ -47,8 +47,8 @@ $(document).ready(function() {
     curly.getName = moe.getName;
     _.bindAll(moe, 'getName', 'sayHi');
     curly.sayHi = moe.sayHi;
-    equals(curly.getName(), 'name: curly', 'unbound function is bound to current object');
-    equals(curly.sayHi(), 'hi: moe', 'bound function is still bound to original object');
+    equal(curly.getName(), 'name: curly', 'unbound function is bound to current object');
+    equal(curly.sayHi(), 'hi: moe', 'bound function is still bound to original object');
 
     curly = {name : 'curly'};
     moe = {
@@ -58,7 +58,7 @@ $(document).ready(function() {
     };
     _.bindAll(moe);
     curly.sayHi = moe.sayHi;
-    equals(curly.sayHi(), 'hi: moe', 'calling bindAll with no arguments binds all functions to the object');
+    equal(curly.sayHi(), 'hi: moe', 'calling bindAll with no arguments binds all functions to the object');
   });
 
   test("functions: memoize", function() {
@@ -66,15 +66,15 @@ $(document).ready(function() {
       return n < 2 ? n : fib(n - 1) + fib(n - 2);
     };
     var fastFib = _.memoize(fib);
-    equals(fib(10), 55, 'a memoized version of fibonacci produces identical results');
-    equals(fastFib(10), 55, 'a memoized version of fibonacci produces identical results');
+    equal(fib(10), 55, 'a memoized version of fibonacci produces identical results');
+    equal(fastFib(10), 55, 'a memoized version of fibonacci produces identical results');
 
     var o = function(str) {
       return str;
     };
     var fastO = _.memoize(o);
-    equals(o('toString'), 'toString', 'checks hasOwnProperty');
-    equals(fastO('toString'), 'toString', 'checks hasOwnProperty');
+    equal(o('toString'), 'toString', 'checks hasOwnProperty');
+    equal(fastO('toString'), 'toString', 'checks hasOwnProperty');
   });
 
   asyncTest("functions: delay", 2, function() {
@@ -113,8 +113,8 @@ $(document).ready(function() {
     setTimeout(function(){ throttledUpdate(4); }, 120);
     setTimeout(function(){ throttledUpdate(5); }, 140);
     setTimeout(function(){ throttledUpdate(6); }, 250);
-    _.delay(function(){ equals(value, 1, "updated to latest value"); }, 40);
-    _.delay(function(){ equals(value, 6, "updated to latest value"); start(); }, 400);
+    _.delay(function(){ equal(value, 1, "updated to latest value"); }, 40);
+    _.delay(function(){ equal(value, 6, "updated to latest value"); start(); }, 400);
   });
 
   asyncTest("functions: throttle once", 1, function() {
@@ -151,18 +151,18 @@ $(document).ready(function() {
     var increment = _.once(function(){ num++; });
     increment();
     increment();
-    equals(num, 1);
+    equal(num, 1);
   });
 
   test("functions: wrap", function() {
     var greet = function(name){ return "hi: " + name; };
     var backwards = _.wrap(greet, function(func, name){ return func(name) + ' ' + name.split('').reverse().join(''); });
-    equals(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
+    equal(backwards('moe'), 'hi: moe eom', 'wrapped the saluation function');
 
     var inner = function(){ return "Hello "; };
     var obj   = {name : "Moe"};
     obj.hi    = _.wrap(inner, function(fn){ return fn() + this.name; });
-    equals(obj.hi(), "Hello Moe");
+    equal(obj.hi(), "Hello Moe");
 
     var noop    = function(){};
     var wrapped = _.wrap(noop, function(fn){ return Array.prototype.slice.call(arguments, 0); });
@@ -174,10 +174,10 @@ $(document).ready(function() {
     var greet = function(name){ return "hi: " + name; };
     var exclaim = function(sentence){ return sentence + '!'; };
     var composed = _.compose(exclaim, greet);
-    equals(composed('moe'), 'hi: moe!', 'can compose a function that takes another');
+    equal(composed('moe'), 'hi: moe!', 'can compose a function that takes another');
 
     composed = _.compose(greet, exclaim);
-    equals(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
+    equal(composed('moe'), 'hi: moe!', 'in this case, the functions are also commutative');
   });
 
   test("functions: after", function() {
@@ -190,9 +190,9 @@ $(document).ready(function() {
       return afterCalled;
     };
 
-    equals(testAfter(5, 5), 1, "after(N) should fire after being called N times");
-    equals(testAfter(5, 4), 0, "after(N) should not fire unless called N times");
-    equals(testAfter(0, 0), 1, "after(0) should fire immediately");
+    equal(testAfter(5, 5), 1, "after(N) should fire after being called N times");
+    equal(testAfter(5, 4), 0, "after(N) should not fire unless called N times");
+    equal(testAfter(0, 0), 1, "after(0) should fire immediately");
   });
 
 });
diff --git a/test/objects.js b/test/objects.js
index 0105d608a..1745d8a3f 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -4,10 +4,10 @@ $(document).ready(function() {
 
   test("objects: keys", function() {
     var exception = /object/;
-    equals(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
+    equal(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
     // the test above is not safe because it relies on for-in enumeration order
     var a = []; a[1] = 0;
-    equals(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
+    equal(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
     raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
     raises(function() { _.keys(void 0); }, exception, 'throws an error for `undefined` values');
     raises(function() { _.keys(1); }, exception, 'throws an error for number primitives');
@@ -16,7 +16,7 @@ $(document).ready(function() {
   });
 
   test("objects: values", function() {
-    equals(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
+    equal(_.values({one : 1, two : 2}).join(', '), '1, 2', 'can extract the values from an object');
   });
 
   test("objects: functions", function() {
@@ -25,20 +25,20 @@ $(document).ready(function() {
 
     var Animal = function(){};
     Animal.prototype.run = function(){};
-    equals(_.functions(new Animal).join(''), 'run', 'also looks up functions on the prototype');
+    equal(_.functions(new Animal).join(''), 'run', 'also looks up functions on the prototype');
   });
 
   test("objects: extend", function() {
     var result;
-    equals(_.extend({}, {a:'b'}).a, 'b', 'can extend an object with the attributes of another');
-    equals(_.extend({a:'x'}, {a:'b'}).a, 'b', 'properties in source override destination');
-    equals(_.extend({x:'x'}, {a:'b'}).x, 'x', 'properties not in source dont get overriden');
+    equal(_.extend({}, {a:'b'}).a, 'b', 'can extend an object with the attributes of another');
+    equal(_.extend({a:'x'}, {a:'b'}).a, 'b', 'properties in source override destination');
+    equal(_.extend({x:'x'}, {a:'b'}).x, 'x', 'properties not in source dont get overriden');
     result = _.extend({x:'x'}, {a:'a'}, {b:'b'});
     ok(_.isEqual(result, {x:'x', a:'a', b:'b'}), 'can extend from multiple source objects');
     result = _.extend({x:'x'}, {a:'a', x:2}, {a:'b'});
     ok(_.isEqual(result, {x:2, a:'b'}), 'extending from multiple source objects last property trumps');
     result = _.extend({}, {a: void 0, b: null});
-    equals(_.keys(result).join(''), 'ab', 'extend does not copy undefined values');
+    equal(_.keys(result).join(''), 'ab', 'extend does not copy undefined values');
   });
 
   test("objects: defaults", function() {
@@ -46,30 +46,30 @@ $(document).ready(function() {
     var options = {zero: 0, one: 1, empty: "", nan: NaN, string: "string"};
 
     _.defaults(options, {zero: 1, one: 10, twenty: 20});
-    equals(options.zero, 0, 'value exists');
-    equals(options.one, 1, 'value exists');
-    equals(options.twenty, 20, 'default applied');
+    equal(options.zero, 0, 'value exists');
+    equal(options.one, 1, 'value exists');
+    equal(options.twenty, 20, 'default applied');
 
     _.defaults(options, {empty: "full"}, {nan: "nan"}, {word: "word"}, {word: "dog"});
-    equals(options.empty, "", 'value exists');
+    equal(options.empty, "", 'value exists');
     ok(_.isNaN(options.nan), "NaN isn't overridden");
-    equals(options.word, "word", 'new value is added, first one wins');
+    equal(options.word, "word", 'new value is added, first one wins');
   });
 
   test("objects: clone", function() {
     var moe = {name : 'moe', lucky : [13, 27, 34]};
     var clone = _.clone(moe);
-    equals(clone.name, 'moe', 'the clone as the attributes of the original');
+    equal(clone.name, 'moe', 'the clone as the attributes of the original');
 
     clone.name = 'curly';
     ok(clone.name == 'curly' && moe.name == 'moe', 'clones can change shallow attributes without affecting the original');
 
     clone.lucky.push(101);
-    equals(_.last(moe.lucky), 101, 'changes to deep attributes are shared with the original');
+    equal(_.last(moe.lucky), 101, 'changes to deep attributes are shared with the original');
 
-    equals(_.clone(undefined), void 0, 'non objects should not be changed by clone');
-    equals(_.clone(1), 1, 'non objects should not be changed by clone');
-    equals(_.clone(null), null, 'non objects should not be changed by clone');
+    equal(_.clone(undefined), void 0, 'non objects should not be changed by clone');
+    equal(_.clone(1), 1, 'non objects should not be changed by clone');
+    equal(_.clone(null), null, 'non objects should not be changed by clone');
   });
 
   test("objects: isEqual", function() {
@@ -291,7 +291,7 @@ $(document).ready(function() {
 
     // Chaining.
     ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'Chained objects containing different values are not equal');
-    equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, '`isEqual` can be chained');
+    equal(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, '`isEqual` can be chained');
 
     // Custom `isEqual` methods.
     var isEqualObj = {isEqual: function (o) { return o.isEqual == this.isEqual; }, unique: {}};
@@ -522,8 +522,8 @@ $(document).ready(function() {
     var intercepted = null;
     var interceptor = function(obj) { intercepted = obj; };
     var returned = _.tap(1, interceptor);
-    equals(intercepted, 1, "passes tapped object to interceptor");
-    equals(returned, 1, "returns tapped object");
+    equal(intercepted, 1, "passes tapped object to interceptor");
+    equal(returned, 1, "returns tapped object");
 
     returned = _([1,2,3]).chain().
       map(function(n){ return n * 2; }).
diff --git a/test/utility.js b/test/utility.js
index 7bc5cb44b..6207d3be3 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -6,19 +6,19 @@ $(document).ready(function() {
     var underscore = _.noConflict();
     ok(underscore.isUndefined(_), "The '_' variable has been returned to its previous state.");
     var intersection = underscore.intersect([-1, 0, 1, 2], [1, 2, 3, 4]);
-    equals(intersection.join(', '), '1, 2', 'but the intersection function still works');
+    equal(intersection.join(', '), '1, 2', 'but the intersection function still works');
     window._ = underscore;
   });
 
   test("utility: identity", function() {
     var moe = {name : 'moe'};
-    equals(_.identity(moe), moe, 'moe is the same as his identity');
+    equal(_.identity(moe), moe, 'moe is the same as his identity');
   });
 
   test("utility: uniqueId", function() {
     var ids = [], i = 0;
     while(i++ < 100) ids.push(_.uniqueId());
-    equals(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
+    equal(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids');
   });
 
   test("utility: times", function() {
@@ -37,38 +37,38 @@ $(document).ready(function() {
         return string.split('').reverse().join('');
       }
     });
-    equals(_.myReverse('panacea'), 'aecanap', 'mixed in a function to _');
-    equals(_('champ').myReverse(), 'pmahc', 'mixed in a function to the OOP wrapper');
+    equal(_.myReverse('panacea'), 'aecanap', 'mixed in a function to _');
+    equal(_('champ').myReverse(), 'pmahc', 'mixed in a function to the OOP wrapper');
   });
 
   test("utility: _.escape", function() {
-    equals(_.escape("Curly & Moe"), "Curly &amp; Moe");
-    equals(_.escape("Curly &amp; Moe"), "Curly &amp;amp; Moe");
+    equal(_.escape("Curly & Moe"), "Curly &amp; Moe");
+    equal(_.escape("Curly &amp; Moe"), "Curly &amp;amp; Moe");
   });
 
   test("utility: template", function() {
     var basicTemplate = _.template("<%= thing %> is gettin' on my noives!");
     var result = basicTemplate({thing : 'This'});
-    equals(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
+    equal(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
 
     var sansSemicolonTemplate = _.template("A <% this %> B");
-    equals(sansSemicolonTemplate(), "A  B");
+    equal(sansSemicolonTemplate(), "A  B");
 
     var backslashTemplate = _.template("<%= thing %> is \\ridanculous");
-    equals(backslashTemplate({thing: 'This'}), "This is \\ridanculous");
+    equal(backslashTemplate({thing: 'This'}), "This is \\ridanculous");
 
     var escapeTemplate = _.template('<%= a ? "checked=\\"checked\\"" : "" %>');
-    equals(escapeTemplate({a: true}), 'checked="checked"', 'can handle slash escapes in interpolations.');
+    equal(escapeTemplate({a: true}), 'checked="checked"', 'can handle slash escapes in interpolations.');
 
     var fancyTemplate = _.template("<ul><% \
       for (key in people) { \
     %><li><%= people[key] %></li><% } %></ul>");
     result = fancyTemplate({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
-    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+    equal(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
     var escapedCharsInJavascriptTemplate = _.template("<ul><% _.each(numbers.split('\\n'), function(item) { %><li><%= item %></li><% }) %></ul>");
     result = escapedCharsInJavascriptTemplate({numbers: "one\ntwo\nthree\nfour"});
-    equals(result, "<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>", 'Can use escaped characters (e.g. \\n) in Javascript');
+    equal(result, "<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>", 'Can use escaped characters (e.g. \\n) in Javascript');
 
     var namespaceCollisionTemplate = _.template("<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class=\"thumbnail\" rel=\"<%= p %>\"></div><% }); %>");
     result = namespaceCollisionTemplate({
@@ -79,36 +79,36 @@ $(document).ready(function() {
         3: "p3-thumbnail.gif"
       }
     });
-    equals(result, "3 p3-thumbnail.gif <div class=\"thumbnail\" rel=\"p1-thumbnail.gif\"></div><div class=\"thumbnail\" rel=\"p2-thumbnail.gif\"></div><div class=\"thumbnail\" rel=\"p3-thumbnail.gif\"></div>");
+    equal(result, "3 p3-thumbnail.gif <div class=\"thumbnail\" rel=\"p1-thumbnail.gif\"></div><div class=\"thumbnail\" rel=\"p2-thumbnail.gif\"></div><div class=\"thumbnail\" rel=\"p3-thumbnail.gif\"></div>");
 
     var noInterpolateTemplate = _.template("<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
     result = noInterpolateTemplate();
-    equals(result, "<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
+    equal(result, "<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>");
 
     var quoteTemplate = _.template("It's its, not it's");
-    equals(quoteTemplate({}), "It's its, not it's");
+    equal(quoteTemplate({}), "It's its, not it's");
 
     var quoteInStatementAndBody = _.template("<%\
       if(foo == 'bar'){ \
     %>Statement quotes and 'quotes'.<% } %>");
-    equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
+    equal(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.');
-    equals(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
+    equal(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
 
     var template = _.template("<i><%- value %></i>");
     var result = template({value: "<script>"});
-    equals(result, '<i>&lt;script&gt;</i>');
+    equal(result, '<i>&lt;script&gt;</i>');
 
     var stooge = {
       name: "Moe",
       template: _.template("I'm <%= this.name %>")
     };
-    equals(stooge.template(), "I'm Moe");
+    equal(stooge.template(), "I'm Moe");
 
     if (!$.browser.msie) {
       var fromHTML = _.template($('#template').html());
-      equals(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
+      equal(fromHTML({data : 12345}).replace(/\s/g, ''), '<li>24690</li>');
     }
 
     _.templateSettings = {
@@ -118,13 +118,13 @@ $(document).ready(function() {
 
     var custom = _.template("<ul>{{ for (key in people) { }}<li>{{= people[key] }}</li>{{ } }}</ul>");
     result = custom({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
-    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+    equal(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
     var customQuote = _.template("It's its, not it's");
-    equals(customQuote({}), "It's its, not it's");
+    equal(customQuote({}), "It's its, not it's");
 
     var quoteInStatementAndBody = _.template("{{ if(foo == 'bar'){ }}Statement quotes and 'quotes'.{{ } }}");
-    equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
+    equal(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     _.templateSettings = {
       evaluate    : /<\?([\s\S]+?)\?>/g,
@@ -133,23 +133,23 @@ $(document).ready(function() {
 
     var customWithSpecialChars = _.template("<ul><? for (key in people) { ?><li><?= people[key] ?></li><? } ?></ul>");
     result = customWithSpecialChars({people : {moe : "Moe", larry : "Larry", curly : "Curly"}});
-    equals(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
+    equal(result, "<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>", 'can run arbitrary javascript in templates');
 
     var customWithSpecialCharsQuote = _.template("It's its, not it's");
-    equals(customWithSpecialCharsQuote({}), "It's its, not it's");
+    equal(customWithSpecialCharsQuote({}), "It's its, not it's");
 
     var quoteInStatementAndBody = _.template("<? if(foo == 'bar'){ ?>Statement quotes and 'quotes'.<? } ?>");
-    equals(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
+    equal(quoteInStatementAndBody({foo: "bar"}), "Statement quotes and 'quotes'.");
 
     _.templateSettings = {
       interpolate : /\{\{(.+?)\}\}/g
     };
 
     var mustache = _.template("Hello {{planet}}!");
-    equals(mustache({planet : "World"}), "Hello World!", "can mimic mustache.js");
+    equal(mustache({planet : "World"}), "Hello World!", "can mimic mustache.js");
 
     var templateWithNull = _.template("a null undefined {{planet}}");
-    equals(templateWithNull({planet : "world"}), "a null undefined world", "can handle missing escape and evaluate settings");
+    equal(templateWithNull({planet : "world"}), "a null undefined world", "can handle missing escape and evaluate settings");
   });
 
 });
diff --git a/test/vendor/qunit.css b/test/vendor/qunit.css
index 8d0d3a24b..bcecc4c0d 100644
--- a/test/vendor/qunit.css
+++ b/test/vendor/qunit.css
@@ -1,7 +1,17 @@
+/**
+ * QUnit v1.2.0 - A JavaScript Unit Testing Framework
+ *
+ * http://docs.jquery.com/QUnit
+ *
+ * Copyright (c) 2011 John Resig, Jörn Zaefferer
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * or GPL (GPL-LICENSE.txt) licenses.
+ */
+
 /** Font Family and Sizes */
 
-#qunit-tests, #qunit-header, .qunit-header, #qunit-banner, #qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult {
-	font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial;
+#qunit-tests, #qunit-header, #qunit-banner, #qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult {
+	font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial, sans-serif;
 }
 
 #qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult, #qunit-tests li { font-size: small; }
@@ -18,7 +28,7 @@
 
 /** Header */
 
-#qunit-header, .qunit-header {
+#qunit-header {
 	padding: 0.5em 0 0.5em 1em;
 
 	color: #8699a4;
@@ -49,7 +59,9 @@
 }
 
 #qunit-testrunner-toolbar {
-	padding: 0em 0 0.5em 2em;
+	padding: 0.5em 0 0.5em 2em;
+	color: #5E740B;
+	background-color: #eee;
 }
 
 #qunit-userAgent {
@@ -72,10 +84,24 @@
 	list-style-position: inside;
 }
 
+#qunit-tests.hidepass li.pass, #qunit-tests.hidepass li.running  {
+	display: none;
+}
+
 #qunit-tests li strong {
 	cursor: pointer;
 }
 
+#qunit-tests li a {
+	padding: 0.5em;
+	color: #c2ccd1;
+	text-decoration: none;
+}
+#qunit-tests li a:hover,
+#qunit-tests li a:focus {
+	color: #000;
+}
+
 #qunit-tests ol {
 	margin-top: 0.5em;
 	padding: 0.5em;
@@ -160,6 +186,14 @@
 	color: #710909;
 	background-color: #fff;
 	border-left: 26px solid #EE5757;
+	white-space: pre;
+}
+
+#qunit-tests > li:last-child {
+	border-radius: 0 0 15px 15px;
+	-moz-border-radius: 0 0 15px 15px;
+	-webkit-border-bottom-right-radius: 15px;
+	-webkit-border-bottom-left-radius: 15px;
 }
 
 #qunit-tests .fail                          { color: #000000; background-color: #EE5757; }
@@ -169,11 +203,10 @@
 #qunit-tests .fail .test-actual             { color: #EE5757; }
 #qunit-tests .fail .test-expected           { color: green;   }
 
-#qunit-banner.qunit-fail,
-#qunit-testrunner-toolbar                   { background-color: #EE5757; }
+#qunit-banner.qunit-fail                    { background-color: #EE5757; }
 
 
-/** Footer */
+/** Result */
 
 #qunit-testresult {
 	padding: 0.5em 0.5em 0.5em 2.5em;
@@ -181,10 +214,7 @@
 	color: #2b81af;
 	background-color: #D2E0E6;
 
-	border-radius: 0 0 15px 15px;
-	-moz-border-radius: 0 0 15px 15px;
-	-webkit-border-bottom-right-radius: 15px;
-	-webkit-border-bottom-left-radius: 15px;
+	border-bottom: 1px solid white;
 }
 
 /** Fixture */
@@ -193,4 +223,4 @@
 	position: absolute;
 	top: -10000px;
 	left: -10000px;
-}
\ No newline at end of file
+}
diff --git a/test/vendor/qunit.js b/test/vendor/qunit.js
index 345630bc4..6d2a8a7b8 100644
--- a/test/vendor/qunit.js
+++ b/test/vendor/qunit.js
@@ -1,1007 +1,11 @@
-/*
- * QUnit - A JavaScript Unit Testing Framework
- *
- * http://docs.jquery.com/QUnit
- *
- * Copyright (c) 2009 John Resig, Jörn Zaefferer
- * Dual licensed under the MIT (MIT-LICENSE.txt)
- * and GPL (GPL-LICENSE.txt) licenses.
- */
-
-(function(window) {
-
-var QUnit = {
-
-	// Initialize the configuration options
-	init: function init() {
-		config = {
-			stats: { all: 0, bad: 0 },
-			moduleStats: { all: 0, bad: 0 },
-			started: +new Date,
-			blocking: false,
-			autorun: false,
-			assertions: [],
-			filters: [],
-			queue: []
-		};
-
-		var tests = id("qunit-tests"),
-			banner = id("qunit-banner"),
-			result = id("qunit-testresult");
-
-		if ( tests ) {
-			tests.innerHTML = "";
-		}
-
-		if ( banner ) {
-			banner.className = "";
-		}
-
-		if ( result ) {
-			result.parentNode.removeChild( result );
-		}
-	},
-
-	// call on start of module test to prepend name to all tests
-	module: function module(name, testEnvironment) {
-
-		synchronize(function() {
-			if ( config.currentModule ) {
-				QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
-			}
-
-			config.currentModule = name;
-			config.moduleTestEnvironment = testEnvironment;
-			config.moduleStats = { all: 0, bad: 0 };
-
-			QUnit.moduleStart( name, testEnvironment );
-		});
-	},
-
-	asyncTest: function asyncTest(testName, expected, callback) {
-		if ( arguments.length === 2 ) {
-			callback = expected;
-			expected = 0;
-		}
-
-		QUnit.test(testName, expected, callback, true);
-	},
-
-	test: function test(testName, expected, callback, async) {
-		var name = testName, testEnvironment = {};
-
-		if ( arguments.length === 2 ) {
-			callback = expected;
-			expected = null;
-		}
-
-		if ( config.currentModule ) {
-			name = config.currentModule + " module: " + name;
-		}
-
-		if ( !validTest(name) ) {
-			return;
-		}
-
-		synchronize(function() {
-			QUnit.testStart( testName );
-
-			testEnvironment = extend({
-				setup: function() {},
-				teardown: function() {}
-			}, config.moduleTestEnvironment);
-
-			config.assertions = [];
-			config.expected = null;
-
-			if ( arguments.length >= 3 ) {
-				config.expected = callback;
-				callback = arguments[2];
-			}
-
-			try {
-				if ( !config.pollution ) {
-					saveGlobal();
-				}
-
-				testEnvironment.setup.call(testEnvironment);
-			} catch(e) {
-				QUnit.ok( false, "Setup failed on " + name + ": " + e.message );
-			}
-
-			if ( async ) {
-				QUnit.stop();
-			}
-
-			try {
-				callback.call(testEnvironment);
-			} catch(e) {
-				fail("Test " + name + " died, exception and test follows", e, callback);
-				QUnit.ok( false, "Died on test #" + (config.assertions.length + 1) + ": " + e.message );
-				// else next test will carry the responsibility
-				saveGlobal();
-
-				// Restart the tests if they're blocking
-				if ( config.blocking ) {
-					start();
-				}
-			}
-		});
-
-		synchronize(function() {
-			try {
-				checkPollution();
-				testEnvironment.teardown.call(testEnvironment);
-			} catch(e) {
-				QUnit.ok( false, "Teardown failed on " + name + ": " + e.message );
-			}
-
-			try {
-				QUnit.reset();
-			} catch(e) {
-				fail("reset() failed, following Test " + name + ", exception and reset fn follows", e, reset);
-			}
-
-			if ( config.expected && config.expected != config.assertions.length ) {
-				QUnit.ok( false, "Expected " + config.expected + " assertions, but " + config.assertions.length + " were run" );
-			}
-
-			var good = 0, bad = 0,
-				tests = id("qunit-tests");
-
-			config.stats.all += config.assertions.length;
-			config.moduleStats.all += config.assertions.length;
-
-			if ( tests ) {
-				var ol  = document.createElement("ol");
-				ol.style.display = "none";
-
-				for ( var i = 0; i < config.assertions.length; i++ ) {
-					var assertion = config.assertions[i];
-
-					var li = document.createElement("li");
-					li.className = assertion.result ? "pass" : "fail";
-					li.innerHTML = assertion.message || "(no message)";
-					ol.appendChild( li );
-
-					if ( assertion.result ) {
-						good++;
-					} else {
-						bad++;
-						config.stats.bad++;
-						config.moduleStats.bad++;
-					}
-				}
-
-				var b = document.createElement("strong");
-				b.innerHTML = name + " <b style='color:black;'>(<b class='fail'>" + bad + "</b>, <b class='pass'>" + good + "</b>, " + config.assertions.length + ")</b>";
-
-				addEvent(b, "click", function() {
-					var next = b.nextSibling, display = next.style.display;
-					next.style.display = display === "none" ? "block" : "none";
-				});
-
-				addEvent(b, "dblclick", function(e) {
-					var target = (e || window.event).target;
-					if ( target.nodeName.toLowerCase() === "strong" ) {
-						var text = "", node = target.firstChild;
-
-						while ( node.nodeType === 3 ) {
-							text += node.nodeValue;
-							node = node.nextSibling;
-						}
-
-						text = text.replace(/(^\s*|\s*$)/g, "");
-
-						if ( window.location ) {
-							window.location.href = window.location.href.match(/^(.+?)(\?.*)?$/)[1] + "?" + encodeURIComponent(text);
-						}
-					}
-				});
-
-				var li = document.createElement("li");
-				li.className = bad ? "fail" : "pass";
-				li.appendChild( b );
-				li.appendChild( ol );
-				tests.appendChild( li );
-
-				if ( bad ) {
-					var toolbar = id("qunit-testrunner-toolbar");
-					if ( toolbar ) {
-						toolbar.style.display = "block";
-						id("qunit-filter-pass").disabled = null;
-						id("qunit-filter-missing").disabled = null;
-					}
-				}
-
-			} else {
-				for ( var i = 0; i < config.assertions.length; i++ ) {
-					if ( !config.assertions[i].result ) {
-						bad++;
-						config.stats.bad++;
-						config.moduleStats.bad++;
-					}
-				}
-			}
-
-			QUnit.testDone( testName, bad, config.assertions.length );
-
-			if ( !window.setTimeout && !config.queue.length ) {
-				done();
-			}
-		});
-
-		if ( window.setTimeout && !config.doneTimer ) {
-			config.doneTimer = window.setTimeout(function(){
-				if ( !config.queue.length ) {
-					done();
-				} else {
-					synchronize( done );
-				}
-			}, 13);
-		}
-	},
-
-	/**
-	 * Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
-	 */
-	expect: function expect(asserts) {
-		config.expected = asserts;
-	},
-
-	/**
-	 * Asserts true.
-	 * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
-	 */
-	ok: function ok(a, msg) {
-		QUnit.log(a, msg);
-
-		config.assertions.push({
-			result: !!a,
-			message: msg
-		});
-	},
-
-	/**
-	 * Checks that the first two arguments are equal, with an optional message.
-	 * Prints out both actual and expected values.
-	 *
-	 * Prefered to ok( actual == expected, message )
-	 *
-	 * @example equals( format("Received {0} bytes.", 2), "Received 2 bytes." );
-	 *
-	 * @param Object actual
-	 * @param Object expected
-	 * @param String message (optional)
-	 */
-	equals: function equals(actual, expected, message) {
-		push(expected == actual, actual, expected, message);
-	},
-
-	same: function(a, b, message) {
-		push(QUnit.equiv(a, b), a, b, message);
-	},
-
-	start: function start() {
-		// A slight delay, to avoid any current callbacks
-		if ( window.setTimeout ) {
-			window.setTimeout(function() {
-				if ( config.timeout ) {
-					clearTimeout(config.timeout);
-				}
-
-				config.blocking = false;
-				process();
-			}, 13);
-		} else {
-			config.blocking = false;
-			process();
-		}
-	},
-
-	stop: function stop(timeout) {
-		config.blocking = true;
-
-		if ( timeout && window.setTimeout ) {
-			config.timeout = window.setTimeout(function() {
-				QUnit.ok( false, "Test timed out" );
-				QUnit.start();
-			}, timeout);
-		}
-	},
-
-	/**
-	 * Resets the test setup. Useful for tests that modify the DOM.
-	 */
-	reset: function reset() {
-		if ( window.jQuery ) {
-			jQuery("#main").html( config.fixture );
-			jQuery.event.global = {};
-			jQuery.ajaxSettings = extend({}, config.ajaxSettings);
-		}
-	},
-
-	/**
-	 * Trigger an event on an element.
-	 *
-	 * @example triggerEvent( document.body, "click" );
-	 *
-	 * @param DOMElement elem
-	 * @param String type
-	 */
-	triggerEvent: function triggerEvent( elem, type, event ) {
-		if ( document.createEvent ) {
-			event = document.createEvent("MouseEvents");
-			event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
-				0, 0, 0, 0, 0, false, false, false, false, 0, null);
-			elem.dispatchEvent( event );
-
-		} else if ( elem.fireEvent ) {
-			elem.fireEvent("on"+type);
-		}
-	},
-
-	// Logging callbacks
-	done: function done(failures, total) {},
-	log: function log(result, message) {},
-	testStart: function testStart(name) {},
-	testDone: function testDone(name, failures, total) {},
-	moduleStart: function moduleStart(name, testEnvironment) {},
-	moduleDone: function moduleDone(name, failures, total) {}
-};
-
-// Maintain internal state
-var config = {
-	// The queue of tests to run
-	queue: [],
-
-	// block until document ready
-	blocking: true
-};
-
-// Load paramaters
-(function() {
-	var location = window.location || { search: "", protocol: "file:" },
-		GETParams = location.search.slice(1).split('&');
-
-	for ( var i = 0; i < GETParams.length; i++ ) {
-		GETParams[i] = decodeURIComponent( GETParams[i] );
-		if ( GETParams[i] === "noglobals" ) {
-			GETParams.splice( i, 1 );
-			i--;
-			config.noglobals = true;
-		}
-	}
-
-	// restrict modules/tests by get parameters
-	config.filters = GETParams;
-
-	// Figure out if we're running the tests from a server or not
-	QUnit.isLocal = !!(location.protocol === 'file:');
-})();
-
-// Expose the API as global variables, unless an 'exports'
-// object exists, in that case we assume we're in CommonJS
-if ( typeof exports === "undefined" || typeof require === "undefined" ) {
-	extend(window, QUnit);
-	window.QUnit = QUnit;
-} else {
-	extend(exports, QUnit);
-	exports.QUnit = QUnit;
-}
-
-if ( typeof document === "undefined" || document.readyState === "complete" ) {
-	config.autorun = true;
-}
-
-addEvent(window, "load", function() {
-	// Initialize the config, saving the execution queue
-	var oldconfig = extend({}, config);
-	QUnit.init();
-	extend(config, oldconfig);
-
-	config.blocking = false;
-
-	var userAgent = id("qunit-userAgent");
-	if ( userAgent ) {
-		userAgent.innerHTML = navigator.userAgent;
-	}
-
-	var toolbar = id("qunit-testrunner-toolbar");
-	if ( toolbar ) {
-		toolbar.style.display = "none";
-
-		var filter = document.createElement("input");
-		filter.type = "checkbox";
-		filter.id = "qunit-filter-pass";
-		filter.disabled = true;
-		addEvent( filter, "click", function() {
-			var li = document.getElementsByTagName("li");
-			for ( var i = 0; i < li.length; i++ ) {
-				if ( li[i].className.indexOf("pass") > -1 ) {
-					li[i].style.display = filter.checked ? "none" : "block";
-				}
-			}
-		});
-		toolbar.appendChild( filter );
-
-		var label = document.createElement("label");
-		label.setAttribute("for", "filter-pass");
-		label.innerHTML = "Hide passed tests";
-		toolbar.appendChild( label );
-
-		var missing = document.createElement("input");
-		missing.type = "checkbox";
-		missing.id = "qunit-filter-missing";
-		missing.disabled = true;
-		addEvent( missing, "click", function() {
-			var li = document.getElementsByTagName("li");
-			for ( var i = 0; i < li.length; i++ ) {
-				if ( li[i].className.indexOf("fail") > -1 && li[i].innerHTML.indexOf('missing test - untested code is broken code') > - 1 ) {
-					li[i].parentNode.parentNode.style.display = missing.checked ? "none" : "block";
-				}
-			}
-		});
-		toolbar.appendChild( missing );
-
-		label = document.createElement("label");
-		label.setAttribute("for", "filter-missing");
-		label.innerHTML = "Hide missing tests (untested code is broken code)";
-		toolbar.appendChild( label );
-	}
-
-	var main = id('main');
-	if ( main ) {
-		config.fixture = main.innerHTML;
-	}
-
-	if ( window.jQuery ) {
-		config.ajaxSettings = window.jQuery.ajaxSettings;
-	}
-
-	QUnit.start();
-});
-
-function done() {
-	if ( config.doneTimer && window.clearTimeout ) {
-		window.clearTimeout( config.doneTimer );
-		config.doneTimer = null;
-	}
-
-	if ( config.queue.length ) {
-		config.doneTimer = window.setTimeout(function(){
-			if ( !config.queue.length ) {
-				done();
-			} else {
-				synchronize( done );
-			}
-		}, 13);
-
-		return;
-	}
-
-	config.autorun = true;
-
-	// Log the last module results
-	if ( config.currentModule ) {
-		QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
-	}
-
-	var banner = id("qunit-banner"),
-		tests = id("qunit-tests"),
-		html = ['Tests completed in ',
-		+new Date - config.started, ' milliseconds.<br/>',
-		'<span class="bad">', config.stats.all - config.stats.bad, '</span> tests of <span class="all">', config.stats.all, '</span> passed, ', config.stats.bad,' failed.'].join('');
-
-	if ( banner ) {
-		banner.className += " " + (config.stats.bad ? "fail" : "pass");
-	}
-
-	if ( tests ) {
-		var result = id("qunit-testresult");
-
-		if ( !result ) {
-			result = document.createElement("p");
-			result.id = "qunit-testresult";
-			result.className = "result";
-			tests.parentNode.insertBefore( result, tests.nextSibling );
-		}
-
-		result.innerHTML = html;
-	}
-
-	QUnit.done( config.stats.bad, config.stats.all );
-}
-
-function validTest( name ) {
-	var i = config.filters.length,
-		run = false;
-
-	if ( !i ) {
-		return true;
-	}
-
-	while ( i-- ) {
-		var filter = config.filters[i],
-			not = filter.charAt(0) == '!';
-
-		if ( not ) {
-			filter = filter.slice(1);
-		}
-
-		if ( name.indexOf(filter) !== -1 ) {
-			return !not;
-		}
-
-		if ( not ) {
-			run = true;
-		}
-	}
-
-	return run;
-}
-
-function push(result, actual, expected, message) {
-	message = message || (result ? "okay" : "failed");
-	QUnit.ok( result, result ? message + ": " + expected : message + ", expected: " + QUnit.jsDump.parse(expected) + " result: " + QUnit.jsDump.parse(actual) );
-}
-
-function synchronize( callback ) {
-	config.queue.push( callback );
-
-	if ( config.autorun && !config.blocking ) {
-		process();
-	}
-}
-
-function process() {
-	while ( config.queue.length && !config.blocking ) {
-		config.queue.shift()();
-	}
-}
-
-function saveGlobal() {
-	config.pollution = [];
-
-	if ( config.noglobals ) {
-		for ( var key in window ) {
-			config.pollution.push( key );
-		}
-	}
-}
-
-function checkPollution( name ) {
-	var old = config.pollution;
-	saveGlobal();
-
-	var newGlobals = diff( old, config.pollution );
-	if ( newGlobals.length > 0 ) {
-		ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
-		config.expected++;
-	}
-
-	var deletedGlobals = diff( config.pollution, old );
-	if ( deletedGlobals.length > 0 ) {
-		ok( false, "Deleted global variable(s): " + deletedGlobals.join(", ") );
-		config.expected++;
-	}
-}
-
-// returns a new Array with the elements that are in a but not in b
-function diff( a, b ) {
-	var result = a.slice();
-	for ( var i = 0; i < result.length; i++ ) {
-		for ( var j = 0; j < b.length; j++ ) {
-			if ( result[i] === b[j] ) {
-				result.splice(i, 1);
-				i--;
-				break;
-			}
-		}
-	}
-	return result;
-}
-
-function fail(message, exception, callback) {
-	if ( typeof console !== "undefined" && console.error && console.warn ) {
-		console.error(message);
-		console.error(exception);
-		console.warn(callback.toString());
-
-	} else if ( window.opera && opera.postError ) {
-		opera.postError(message, exception, callback.toString);
-	}
-}
-
-function extend(a, b) {
-	for ( var prop in b ) {
-		a[prop] = b[prop];
-	}
-
-	return a;
-}
-
-function addEvent(elem, type, fn) {
-	if ( elem.addEventListener ) {
-		elem.addEventListener( type, fn, false );
-	} else if ( elem.attachEvent ) {
-		elem.attachEvent( "on" + type, fn );
-	} else {
-		fn();
-	}
-}
-
-function id(name) {
-	return !!(typeof document !== "undefined" && document && document.getElementById) &&
-		document.getElementById( name );
-}
-
-// Test for equality any JavaScript type.
-// Discussions and reference: http://philrathe.com/articles/equiv
-// Test suites: http://philrathe.com/tests/equiv
-// Author: Philippe Rathé <prathe@gmail.com>
-QUnit.equiv = function () {
-
-    var innerEquiv; // the real equiv function
-    var callers = []; // stack to decide between skip/abort functions
-
-
-    // Determine what is o.
-    function hoozit(o) {
-        if (o.constructor === String) {
-            return "string";
-
-        } else if (o.constructor === Boolean) {
-            return "boolean";
-
-        } else if (o.constructor === Number) {
-
-            if (isNaN(o)) {
-                return "nan";
-            } else {
-                return "number";
-            }
-
-        } else if (typeof o === "undefined") {
-            return "undefined";
-
-        // consider: typeof null === object
-        } else if (o === null) {
-            return "null";
-
-        // consider: typeof [] === object
-        } else if (o instanceof Array) {
-            return "array";
-
-        // consider: typeof new Date() === object
-        } else if (o instanceof Date) {
-            return "date";
-
-        // consider: /./ instanceof Object;
-        //           /./ instanceof RegExp;
-        //          typeof /./ === "function"; // => false in IE and Opera,
-        //                                          true in FF and Safari
-        } else if (o instanceof RegExp) {
-            return "regexp";
-
-        } else if (typeof o === "object") {
-            return "object";
-
-        } else if (o instanceof Function) {
-            return "function";
-        } else {
-            return undefined;
-        }
-    }
-
-    // Call the o related callback with the given arguments.
-    function handleEvents(o, callbacks, args) {
-        var prop = hoozit(o);
-        if (prop) {
-            if (hoozit(callbacks[prop]) === "function") {
-                return callbacks[prop].apply(callbacks, args);
-            } else {
-                return callbacks[prop]; // or undefined
-            }
-        }
-    }
-
-    var callbacks = function () {
-
-        // for string, boolean, number and null
-        function useStrictEquality(b, a) {
-            if (b instanceof a.constructor || a instanceof b.constructor) {
-                // to catch short annotaion VS 'new' annotation of a declaration
-                // e.g. var i = 1;
-                //      var j = new Number(1);
-                return a == b;
-            } else {
-                return a === b;
-            }
-        }
-
-        return {
-            "string": useStrictEquality,
-            "boolean": useStrictEquality,
-            "number": useStrictEquality,
-            "null": useStrictEquality,
-            "undefined": useStrictEquality,
-
-            "nan": function (b) {
-                return isNaN(b);
-            },
-
-            "date": function (b, a) {
-                return hoozit(b) === "date" && a.valueOf() === b.valueOf();
-            },
-
-            "regexp": function (b, a) {
-                return hoozit(b) === "regexp" &&
-                    a.source === b.source && // the regex itself
-                    a.global === b.global && // and its modifers (gmi) ...
-                    a.ignoreCase === b.ignoreCase &&
-                    a.multiline === b.multiline;
-            },
-
-            // - skip when the property is a method of an instance (OOP)
-            // - abort otherwise,
-            //   initial === would have catch identical references anyway
-            "function": function () {
-                var caller = callers[callers.length - 1];
-                return caller !== Object &&
-                        typeof caller !== "undefined";
-            },
-
-            "array": function (b, a) {
-                var i;
-                var len;
-
-                // b could be an object literal here
-                if ( ! (hoozit(b) === "array")) {
-                    return false;
-                }
-
-                len = a.length;
-                if (len !== b.length) { // safe and faster
-                    return false;
-                }
-                for (i = 0; i < len; i++) {
-                    if ( ! innerEquiv(a[i], b[i])) {
-                        return false;
-                    }
-                }
-                return true;
-            },
-
-            "object": function (b, a) {
-                var i;
-                var eq = true; // unless we can proove it
-                var aProperties = [], bProperties = []; // collection of strings
-
-                // comparing constructors is more strict than using instanceof
-                if ( a.constructor !== b.constructor) {
-                    return false;
-                }
-
-                // stack constructor before traversing properties
-                callers.push(a.constructor);
-
-                for (i in a) { // be strict: don't ensures hasOwnProperty and go deep
-
-                    aProperties.push(i); // collect a's properties
-
-                    if ( ! innerEquiv(a[i], b[i])) {
-                        eq = false;
-                    }
-                }
-
-                callers.pop(); // unstack, we are done
-
-                for (i in b) {
-                    bProperties.push(i); // collect b's properties
-                }
-
-                // Ensures identical properties name
-                return eq && innerEquiv(aProperties.sort(), bProperties.sort());
-            }
-        };
-    }();
-
-    innerEquiv = function () { // can take multiple arguments
-        var args = Array.prototype.slice.apply(arguments);
-        if (args.length < 2) {
-            return true; // end transition
-        }
-
-        return (function (a, b) {
-            if (a === b) {
-                return true; // catch the most you can
-            } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || hoozit(a) !== hoozit(b)) {
-                return false; // don't lose time with error prone cases
-            } else {
-                return handleEvents(a, callbacks, [b, a]);
-            }
-
-        // apply transition with (1..n) arguments
-        })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1));
-    };
-
-    return innerEquiv;
-
-}();
-
 /**
- * jsDump
- * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
- * Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
- * Date: 5/15/2008
- * @projectDescription Advanced and extensible data dumping for Javascript.
- * @version 1.0.0
- * @author Ariel Flesler
- * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
- */
-QUnit.jsDump = (function() {
-	function quote( str ) {
-		return '"' + str.toString().replace(/"/g, '\\"') + '"';
-	};
-	function literal( o ) {
-		return o + '';
-	};
-	function join( pre, arr, post ) {
-		var s = jsDump.separator(),
-			base = jsDump.indent(),
-			inner = jsDump.indent(1);
-		if ( arr.join )
-			arr = arr.join( ',' + s + inner );
-		if ( !arr )
-			return pre + post;
-		return [ pre, inner + arr, base + post ].join(s);
-	};
-	function array( arr ) {
-		var i = arr.length,	ret = Array(i);
-		this.up();
-		while ( i-- )
-			ret[i] = this.parse( arr[i] );
-		this.down();
-		return join( '[', ret, ']' );
-	};
-
-	var reName = /^function (\w+)/;
-
-	var jsDump = {
-		parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
-			var	parser = this.parsers[ type || this.typeOf(obj) ];
-			type = typeof parser;
-
-			return type == 'function' ? parser.call( this, obj ) :
-				   type == 'string' ? parser :
-				   this.parsers.error;
-		},
-		typeOf:function( obj ) {
-			var type = typeof obj,
-				f = 'function';//we'll use it 3 times, save it
-			return type != 'object' && type != f ? type :
-				!obj ? 'null' :
-				obj.exec ? 'regexp' :// some browsers (FF) consider regexps functions
-				obj.getHours ? 'date' :
-				obj.scrollBy ?  'window' :
-				obj.nodeName == '#document' ? 'document' :
-				obj.nodeName ? 'node' :
-				obj.item ? 'nodelist' : // Safari reports nodelists as functions
-				obj.callee ? 'arguments' :
-				obj.call || obj.constructor != Array && //an array would also fall on this hack
-					(obj+'').indexOf(f) != -1 ? f : //IE reports functions like alert, as objects
-				'length' in obj ? 'array' :
-				type;
-		},
-		separator:function() {
-			return this.multiline ?	this.HTML ? '<br />' : '\n' : this.HTML ? '&nbsp;' : ' ';
-		},
-		indent:function( extra ) {// extra can be a number, shortcut for increasing-calling-decreasing
-			if ( !this.multiline )
-				return '';
-			var chr = this.indentChar;
-			if ( this.HTML )
-				chr = chr.replace(/\t/g,'   ').replace(/ /g,'&nbsp;');
-			return Array( this._depth_ + (extra||0) ).join(chr);
-		},
-		up:function( a ) {
-			this._depth_ += a || 1;
-		},
-		down:function( a ) {
-			this._depth_ -= a || 1;
-		},
-		setParser:function( name, parser ) {
-			this.parsers[name] = parser;
-		},
-		// The next 3 are exposed so you can use them
-		quote:quote,
-		literal:literal,
-		join:join,
-		//
-		_depth_: 1,
-		// This is the list of parsers, to modify them, use jsDump.setParser
-		parsers:{
-			window: '[Window]',
-			document: '[Document]',
-			error:'[ERROR]', //when no parser is found, shouldn't happen
-			unknown: '[Unknown]',
-			'null':'null',
-			undefined:'undefined',
-			'function':function( fn ) {
-				var ret = 'function',
-					name = 'name' in fn ? fn.name : (reName.exec(fn)||[])[1];//functions never have name in IE
-				if ( name )
-					ret += ' ' + name;
-				ret += '(';
-
-				ret = [ ret, this.parse( fn, 'functionArgs' ), '){'].join('');
-				return join( ret, this.parse(fn,'functionCode'), '}' );
-			},
-			array: array,
-			nodelist: array,
-			arguments: array,
-			object:function( map ) {
-				var ret = [ ];
-				this.up();
-				for ( var key in map )
-					ret.push( this.parse(key,'key') + ': ' + this.parse(map[key]) );
-				this.down();
-				return join( '{', ret, '}' );
-			},
-			node:function( node ) {
-				var open = this.HTML ? '&lt;' : '<',
-					close = this.HTML ? '&gt;' : '>';
-
-				var tag = node.nodeName.toLowerCase(),
-					ret = open + tag;
-
-				for ( var a in this.DOMAttrs ) {
-					var val = node[this.DOMAttrs[a]];
-					if ( val )
-						ret += ' ' + a + '=' + this.parse( val, 'attribute' );
-				}
-				return ret + close + open + '/' + tag + close;
-			},
-			functionArgs:function( fn ) {//function calls it internally, it's the arguments part of the function
-				var l = fn.length;
-				if ( !l ) return '';
-
-				var args = Array(l);
-				while ( l-- )
-					args[l] = String.fromCharCode(97+l);//97 is 'a'
-				return ' ' + args.join(', ') + ' ';
-			},
-			key:quote, //object calls it internally, the key part of an item in a map
-			functionCode:'[code]', //function calls it internally, it's the content of the function
-			attribute:quote, //node calls it internally, it's an html attribute value
-			string:quote,
-			date:quote,
-			regexp:literal, //regex
-			number:literal,
-			'boolean':literal
-		},
-		DOMAttrs:{//attributes to dump from nodes, name=>realName
-			id:'id',
-			name:'name',
-			'class':'className'
-		},
-		HTML:true,//if true, entities are escaped ( <, >, \t, space and \n )
-		indentChar:'   ',//indentation unit
-		multiline:true //if true, items in a collection, are separated by a \n, else just a space.
-	};
-
-	return jsDump;
-})();
-
-})(this);/*
- * QUnit - A JavaScript Unit Testing Framework
+ * QUnit v1.2.0 - A JavaScript Unit Testing Framework
  *
  * http://docs.jquery.com/QUnit
  *
- * Copyright (c) 2009 John Resig, Jörn Zaefferer
+ * Copyright (c) 2011 John Resig, Jörn Zaefferer
  * Dual licensed under the MIT (MIT-LICENSE.txt)
- * and GPL (GPL-LICENSE.txt) licenses.
+ * or GPL (GPL-LICENSE.txt) licenses.
  */
 
 (function(window) {
@@ -1011,13 +15,15 @@ var defined = {
 	sessionStorage: (function() {
 		try {
 			return !!sessionStorage.getItem;
-		} catch(e){
+		} catch(e) {
 			return false;
 		}
-  })()
-}
+	})()
+};
 
-var testId = 0;
+var	testId = 0,
+	toString = Object.prototype.toString,
+	hasOwn = Object.prototype.hasOwnProperty;
 
 var Test = function(name, testName, expected, testEnvironmentArg, async, callback) {
 	this.name = name;
@@ -1036,18 +42,26 @@ Test.prototype = {
 				b.innerHTML = "Running " + this.name;
 			var li = document.createElement("li");
 				li.appendChild( b );
+				li.className = "running";
 				li.id = this.id = "test-output" + testId++;
 			tests.appendChild( li );
 		}
 	},
 	setup: function() {
 		if (this.module != config.previousModule) {
-			if ( this.previousModule ) {
-				QUnit.moduleDone( this.module, config.moduleStats.bad, config.moduleStats.all );
+			if ( config.previousModule ) {
+				runLoggingCallbacks('moduleDone', QUnit, {
+					name: config.previousModule,
+					failed: config.moduleStats.bad,
+					passed: config.moduleStats.all - config.moduleStats.bad,
+					total: config.moduleStats.all
+				} );
 			}
 			config.previousModule = this.module;
 			config.moduleStats = { all: 0, bad: 0 };
-			QUnit.moduleStart( this.module, this.moduleTestEnvironment );
+			runLoggingCallbacks( 'moduleStart', QUnit, {
+				name: this.module
+			} );
 		}
 
 		config.current = this;
@@ -1059,7 +73,10 @@ Test.prototype = {
 			extend(this.testEnvironment, this.testEnvironmentArg);
 		}
 
-		QUnit.testStart( this.testName, this.testEnvironment );
+		runLoggingCallbacks( 'testStart', QUnit, {
+			name: this.testName,
+			module: this.module
+		});
 
 		// allow utility functions to access the current test environment
 		// TODO why??
@@ -1072,41 +89,45 @@ Test.prototype = {
 
 			this.testEnvironment.setup.call(this.testEnvironment);
 		} catch(e) {
-			// TODO use testName instead of name for no-markup message?
-			QUnit.ok( false, "Setup failed on " + this.name + ": " + e.message );
+			QUnit.ok( false, "Setup failed on " + this.testName + ": " + e.message );
 		}
 	},
 	run: function() {
+		config.current = this;
 		if ( this.async ) {
 			QUnit.stop();
 		}
 
+		if ( config.notrycatch ) {
+			this.callback.call(this.testEnvironment);
+			return;
+		}
 		try {
 			this.callback.call(this.testEnvironment);
 		} catch(e) {
-			// TODO use testName instead of name for no-markup message?
-			fail("Test " + this.name + " died, exception and test follows", e, this.callback);
+			fail("Test " + this.testName + " died, exception and test follows", e, this.callback);
 			QUnit.ok( false, "Died on test #" + (this.assertions.length + 1) + ": " + e.message + " - " + QUnit.jsDump.parse(e) );
 			// else next test will carry the responsibility
 			saveGlobal();
 
 			// Restart the tests if they're blocking
 			if ( config.blocking ) {
-				start();
+				QUnit.start();
 			}
 		}
 	},
 	teardown: function() {
+		config.current = this;
 		try {
-			checkPollution();
 			this.testEnvironment.teardown.call(this.testEnvironment);
+			checkPollution();
 		} catch(e) {
-			// TODO use testName instead of name for no-markup message?
-			QUnit.ok( false, "Teardown failed on " + this.name + ": " + e.message );
+			QUnit.ok( false, "Teardown failed on " + this.testName + ": " + e.message );
 		}
 	},
 	finish: function() {
-		if ( this.expected && this.expected != this.assertions.length ) {
+		config.current = this;
+		if ( this.expected != null && this.expected != this.assertions.length ) {
 			QUnit.ok( false, "Expected " + this.expected + " assertions, but " + this.assertions.length + " were run" );
 		}
 
@@ -1117,7 +138,7 @@ Test.prototype = {
 		config.moduleStats.all += this.assertions.length;
 
 		if ( tests ) {
-			var ol  = document.createElement("ol");
+			var ol = document.createElement("ol");
 
 			for ( var i = 0; i < this.assertions.length; i++ ) {
 				var assertion = this.assertions[i];
@@ -1137,7 +158,13 @@ Test.prototype = {
 			}
 
 			// store result when possible
-			defined.sessionStorage && sessionStorage.setItem("qunit-" + this.testName, bad);
+			if ( QUnit.config.reorder && defined.sessionStorage ) {
+				if (bad) {
+					sessionStorage.setItem("qunit-" + this.module + "-" + this.testName, bad);
+				} else {
+					sessionStorage.removeItem("qunit-" + this.module + "-" + this.testName);
+				}
+			}
 
 			if (bad == 0) {
 				ol.style.display = "none";
@@ -1146,8 +173,13 @@ Test.prototype = {
 			var b = document.createElement("strong");
 			b.innerHTML = this.name + " <b class='counts'>(<b class='failed'>" + bad + "</b>, <b class='passed'>" + good + "</b>, " + this.assertions.length + ")</b>";
 
+			var a = document.createElement("a");
+			a.innerHTML = "Rerun";
+			a.href = QUnit.url({ filter: getText([b]).replace(/\([^)]+\)$/, "").replace(/(^\s*|\s*$)/g, "") });
+
 			addEvent(b, "click", function() {
-				var next = b.nextSibling, display = next.style.display;
+				var next = b.nextSibling.nextSibling,
+					display = next.style.display;
 				next.style.display = display === "none" ? "block" : "none";
 			});
 
@@ -1157,25 +189,17 @@ Test.prototype = {
 					target = target.parentNode;
 				}
 				if ( window.location && target.nodeName.toLowerCase() === "strong" ) {
-					window.location.search = "?" + encodeURIComponent(getText([target]).replace(/\(.+\)$/, "").replace(/(^\s*|\s*$)/g, ""));
+					window.location = QUnit.url({ filter: getText([target]).replace(/\([^)]+\)$/, "").replace(/(^\s*|\s*$)/g, "") });
 				}
 			});
 
 			var li = id(this.id);
 			li.className = bad ? "fail" : "pass";
-			li.style.display = resultDisplayStyle(!bad);
 			li.removeChild( li.firstChild );
 			li.appendChild( b );
+			li.appendChild( a );
 			li.appendChild( ol );
 
-			if ( bad ) {
-				var toolbar = id("qunit-testrunner-toolbar");
-				if ( toolbar ) {
-					toolbar.style.display = "block";
-					id("qunit-filter-pass").disabled = null;
-				}
-			}
-
 		} else {
 			for ( var i = 0; i < this.assertions.length; i++ ) {
 				if ( !this.assertions[i].result ) {
@@ -1189,11 +213,16 @@ Test.prototype = {
 		try {
 			QUnit.reset();
 		} catch(e) {
-			// TODO use testName instead of name for no-markup message?
-			fail("reset() failed, following Test " + this.name + ", exception and reset fn follows", e, QUnit.reset);
+			fail("reset() failed, following Test " + this.testName + ", exception and reset fn follows", e, QUnit.reset);
 		}
 
-		QUnit.testDone( this.testName, bad, this.assertions.length );
+		runLoggingCallbacks( 'testDone', QUnit, {
+			name: this.testName,
+			module: this.module,
+			failed: bad,
+			passed: this.assertions.length - bad,
+			total: this.assertions.length
+		} );
 	},
 
 	queue: function() {
@@ -1217,21 +246,20 @@ Test.prototype = {
 			});
 		}
 		// defer when previous test run passed, if storage is available
-		var bad = defined.sessionStorage && +sessionStorage.getItem("qunit-" + this.testName);
+		var bad = QUnit.config.reorder && defined.sessionStorage && +sessionStorage.getItem("qunit-" + this.module + "-" + this.testName);
 		if (bad) {
 			run();
 		} else {
-			synchronize(run);
+			synchronize(run, true);
 		};
 	}
 
-}
+};
 
 var QUnit = {
 
 	// call on start of module test to prepend name to all tests
 	module: function(name, testEnvironment) {
-		config.previousModule = config.currentModule;
 		config.currentModule = name;
 		config.currentModuleTestEnviroment = testEnvironment;
 	},
@@ -1239,7 +267,7 @@ var QUnit = {
 	asyncTest: function(testName, expected, callback) {
 		if ( arguments.length === 2 ) {
 			callback = expected;
-			expected = 0;
+			expected = null;
 		}
 
 		QUnit.test(testName, expected, callback, true);
@@ -1254,7 +282,7 @@ var QUnit = {
 		}
 		// is 2nd argument a testEnvironment?
 		if ( expected && typeof expected === 'object') {
-			testEnvironmentArg =  expected;
+			testEnvironmentArg = expected;
 			expected = null;
 		}
 
@@ -1267,7 +295,6 @@ var QUnit = {
 		}
 
 		var test = new Test(name, testName, expected, testEnvironmentArg, async, callback);
-		test.previousModule = config.previousModule;
 		test.module = config.currentModule;
 		test.moduleTestEnvironment = config.currentModuleTestEnviroment;
 		test.queue();
@@ -1290,8 +317,8 @@ var QUnit = {
 			result: a,
 			message: msg
 		};
-		msg = escapeHtml(msg);
-		QUnit.log(a, msg, details);
+		msg = escapeInnerText(msg);
+		runLoggingCallbacks( 'log', QUnit, details );
 		config.current.assertions.push({
 			result: a,
 			message: msg
@@ -1367,36 +394,59 @@ var QUnit = {
 		QUnit.ok(ok, message);
 	},
 
-	start: function() {
+	start: function(count) {
+		config.semaphore -= count || 1;
+		if (config.semaphore > 0) {
+			// don't start until equal number of stop-calls
+			return;
+		}
+		if (config.semaphore < 0) {
+			// ignore if start is called more often then stop
+			config.semaphore = 0;
+		}
 		// A slight delay, to avoid any current callbacks
 		if ( defined.setTimeout ) {
 			window.setTimeout(function() {
+				if (config.semaphore > 0) {
+					return;
+				}
 				if ( config.timeout ) {
 					clearTimeout(config.timeout);
 				}
 
 				config.blocking = false;
-				process();
+				process(true);
 			}, 13);
 		} else {
 			config.blocking = false;
-			process();
+			process(true);
 		}
 	},
 
-	stop: function(timeout) {
+	stop: function(count) {
+		config.semaphore += count || 1;
 		config.blocking = true;
 
-		if ( timeout && defined.setTimeout ) {
+		if ( config.testTimeout && defined.setTimeout ) {
+			clearTimeout(config.timeout);
 			config.timeout = window.setTimeout(function() {
 				QUnit.ok( false, "Test timed out" );
+				config.semaphore = 1;
 				QUnit.start();
-			}, timeout);
+			}, config.testTimeout);
 		}
 	}
-
 };
 
+//We want access to the constructor's prototype
+(function() {
+	function F(){};
+	F.prototype = QUnit;
+	QUnit = new F();
+	//Make F QUnit's constructor so that we can add to the prototype later
+	QUnit.constructor = F;
+})();
+
 // Backwards compatibility, deprecated
 QUnit.equals = QUnit.equal;
 QUnit.same = QUnit.deepEqual;
@@ -1407,28 +457,51 @@ var config = {
 	queue: [],
 
 	// block until document ready
-	blocking: true
+	blocking: true,
+
+	// when enabled, show only failing tests
+	// gets persisted through sessionStorage and can be changed in UI via checkbox
+	hidepassed: false,
+
+	// by default, run previously failed tests first
+	// very useful in combination with "Hide passed tests" checked
+	reorder: true,
+
+	// by default, modify document.title when suite is done
+	altertitle: true,
+
+	urlConfig: ['noglobals', 'notrycatch'],
+
+	//logging callback queues
+	begin: [],
+	done: [],
+	log: [],
+	testStart: [],
+	testDone: [],
+	moduleStart: [],
+	moduleDone: []
 };
 
 // Load paramaters
 (function() {
 	var location = window.location || { search: "", protocol: "file:" },
-		GETParams = location.search.slice(1).split('&');
+		params = location.search.slice( 1 ).split( "&" ),
+		length = params.length,
+		urlParams = {},
+		current;
 
-	for ( var i = 0; i < GETParams.length; i++ ) {
-		GETParams[i] = decodeURIComponent( GETParams[i] );
-		if ( GETParams[i] === "noglobals" ) {
-			GETParams.splice( i, 1 );
-			i--;
-			config.noglobals = true;
-		} else if ( GETParams[i].search('=') > -1 ) {
-			GETParams.splice( i, 1 );
-			i--;
+	if ( params[ 0 ] ) {
+		for ( var i = 0; i < length; i++ ) {
+			current = params[ i ].split( "=" );
+			current[ 0 ] = decodeURIComponent( current[ 0 ] );
+			// allow just a key to turn on a flag, e.g., test.html?noglobals
+			current[ 1 ] = current[ 1 ] ? decodeURIComponent( current[ 1 ] ) : true;
+			urlParams[ current[ 0 ] ] = current[ 1 ];
 		}
 	}
 
-	// restrict modules/tests by get parameters
-	config.filters = GETParams;
+	QUnit.urlParams = urlParams;
+	config.filter = urlParams.filter;
 
 	// Figure out if we're running the tests from a server or not
 	QUnit.isLocal = !!(location.protocol === 'file:');
@@ -1458,13 +531,14 @@ extend(QUnit, {
 			blocking: false,
 			autostart: true,
 			autorun: false,
-			filters: [],
-			queue: []
+			filter: "",
+			queue: [],
+			semaphore: 0
 		});
 
-		var tests = id("qunit-tests"),
-			banner = id("qunit-banner"),
-			result = id("qunit-testresult");
+		var tests = id( "qunit-tests" ),
+			banner = id( "qunit-banner" ),
+			result = id( "qunit-testresult" );
 
 		if ( tests ) {
 			tests.innerHTML = "";
@@ -1477,6 +551,14 @@ extend(QUnit, {
 		if ( result ) {
 			result.parentNode.removeChild( result );
 		}
+
+		if ( tests ) {
+			result = document.createElement( "p" );
+			result.id = "qunit-testresult";
+			result.className = "result";
+			tests.parentNode.insertBefore( result, tests );
+			result.innerHTML = 'Running...<br/>&nbsp;';
+		}
 	},
 
 	/**
@@ -1486,9 +568,9 @@ extend(QUnit, {
 	 */
 	reset: function() {
 		if ( window.jQuery ) {
-			jQuery( "#main, #qunit-fixture" ).html( config.fixture );
+			jQuery( "#qunit-fixture" ).html( config.fixture );
 		} else {
-			var main = id( 'main' ) || id( 'qunit-fixture' );
+			var main = id( 'qunit-fixture' );
 			if ( main ) {
 				main.innerHTML = config.fixture;
 			}
@@ -1530,8 +612,7 @@ extend(QUnit, {
 				return "null";
 		}
 
-		var type = Object.prototype.toString.call( obj )
-			.match(/^\[object\s(.*)\]$/)[1] || '';
+		var type = toString.call( obj ).match(/^\[object\s(.*)\]$/)[1] || '';
 
 		switch (type) {
 				case 'Number':
@@ -1562,10 +643,10 @@ extend(QUnit, {
 			expected: expected
 		};
 
-		message = escapeHtml(message) || (result ? "okay" : "failed");
+		message = escapeInnerText(message) || (result ? "okay" : "failed");
 		message = '<span class="test-message">' + message + "</span>";
-		expected = escapeHtml(QUnit.jsDump.parse(expected));
-		actual = escapeHtml(QUnit.jsDump.parse(actual));
+		expected = escapeInnerText(QUnit.jsDump.parse(expected));
+		actual = escapeInnerText(QUnit.jsDump.parse(actual));
 		var output = message + '<table><tr class="test-expected"><th>Expected: </th><td><pre>' + expected + '</pre></td></tr>';
 		if (actual != expected) {
 			output += '<tr class="test-actual"><th>Result: </th><td><pre>' + actual + '</pre></td></tr>';
@@ -1575,12 +656,12 @@ extend(QUnit, {
 			var source = sourceFromStacktrace();
 			if (source) {
 				details.source = source;
-				output += '<tr class="test-source"><th>Source: </th><td><pre>' + source +'</pre></td></tr>';
+				output += '<tr class="test-source"><th>Source: </th><td><pre>' + escapeInnerText(source) + '</pre></td></tr>';
 			}
 		}
 		output += "</table>";
 
-		QUnit.log(result, message, details);
+		runLoggingCallbacks( 'log', QUnit, details );
 
 		config.current.assertions.push({
 			result: !!result,
@@ -1588,22 +669,52 @@ extend(QUnit, {
 		});
 	},
 
-	// Logging callbacks
-	begin: function() {},
-	done: function(failures, total) {},
-	log: function(result, message) {},
-	testStart: function(name, testEnvironment) {},
-	testDone: function(name, failures, total) {},
-	moduleStart: function(name, testEnvironment) {},
-	moduleDone: function(name, failures, total) {}
+	url: function( params ) {
+		params = extend( extend( {}, QUnit.urlParams ), params );
+		var querystring = "?",
+			key;
+		for ( key in params ) {
+			if ( !hasOwn.call( params, key ) ) {
+				continue;
+			}
+			querystring += encodeURIComponent( key ) + "=" +
+				encodeURIComponent( params[ key ] ) + "&";
+		}
+		return window.location.pathname + querystring.slice( 0, -1 );
+	},
+
+	extend: extend,
+	id: id,
+	addEvent: addEvent
+});
+
+//QUnit.constructor is set to the empty F() above so that we can add to it's prototype later
+//Doing this allows us to tell if the following methods have been overwritten on the actual
+//QUnit object, which is a deprecated way of using the callbacks.
+extend(QUnit.constructor.prototype, {
+	// Logging callbacks; all receive a single argument with the listed properties
+	// run test/logs.html for any related changes
+	begin: registerLoggingCallback('begin'),
+	// done: { failed, passed, total, runtime }
+	done: registerLoggingCallback('done'),
+	// log: { result, actual, expected, message }
+	log: registerLoggingCallback('log'),
+	// testStart: { name }
+	testStart: registerLoggingCallback('testStart'),
+	// testDone: { name, failed, passed, total }
+	testDone: registerLoggingCallback('testDone'),
+	// moduleStart: { name }
+	moduleStart: registerLoggingCallback('moduleStart'),
+	// moduleDone: { name, failed, passed, total }
+	moduleDone: registerLoggingCallback('moduleDone')
 });
 
 if ( typeof document === "undefined" || document.readyState === "complete" ) {
 	config.autorun = true;
 }
 
-addEvent(window, "load", function() {
-	QUnit.begin();
+QUnit.load = function() {
+	runLoggingCallbacks( 'begin', QUnit, {} );
 
 	// Initialize the config, saving the execution queue
 	var oldconfig = extend({}, config);
@@ -1612,40 +723,52 @@ addEvent(window, "load", function() {
 
 	config.blocking = false;
 
+	var urlConfigHtml = '', len = config.urlConfig.length;
+	for ( var i = 0, val; i < len, val = config.urlConfig[i]; i++ ) {
+		config[val] = QUnit.urlParams[val];
+		urlConfigHtml += '<label><input name="' + val + '" type="checkbox"' + ( config[val] ? ' checked="checked"' : '' ) + '>' + val + '</label>';
+	}
+
 	var userAgent = id("qunit-userAgent");
 	if ( userAgent ) {
 		userAgent.innerHTML = navigator.userAgent;
 	}
 	var banner = id("qunit-header");
 	if ( banner ) {
-		var paramsIndex = location.href.lastIndexOf(location.search);
-		if ( paramsIndex > -1 ) {
-			var mainPageLocation = location.href.slice(0, paramsIndex);
-			if ( mainPageLocation == location.href ) {
-				banner.innerHTML = '<a href=""> ' + banner.innerHTML + '</a> ';
-			} else {
-				var testName = decodeURIComponent(location.search.slice(1));
-				banner.innerHTML = '<a href="' + mainPageLocation + '">' + banner.innerHTML + '</a> &#8250; <a href="">' + testName + '</a>';
-			}
-		}
+		banner.innerHTML = '<a href="' + QUnit.url({ filter: undefined }) + '"> ' + banner.innerHTML + '</a> ' + urlConfigHtml;
+		addEvent( banner, "change", function( event ) {
+			var params = {};
+			params[ event.target.name ] = event.target.checked ? true : undefined;
+			window.location = QUnit.url( params );
+		});
 	}
 
 	var toolbar = id("qunit-testrunner-toolbar");
 	if ( toolbar ) {
-		toolbar.style.display = "none";
-
 		var filter = document.createElement("input");
 		filter.type = "checkbox";
 		filter.id = "qunit-filter-pass";
-		filter.disabled = true;
 		addEvent( filter, "click", function() {
-			var li = document.getElementsByTagName("li");
-			for ( var i = 0; i < li.length; i++ ) {
-				if ( li[i].className.indexOf("pass") > -1 ) {
-					li[i].style.display = filter.checked ? "none" : "";
+			var ol = document.getElementById("qunit-tests");
+			if ( filter.checked ) {
+				ol.className = ol.className + " hidepass";
+			} else {
+				var tmp = " " + ol.className.replace( /[\n\t\r]/g, " " ) + " ";
+				ol.className = tmp.replace(/ hidepass /, " ");
+			}
+			if ( defined.sessionStorage ) {
+				if (filter.checked) {
+					sessionStorage.setItem("qunit-filter-passed-tests", "true");
+				} else {
+					sessionStorage.removeItem("qunit-filter-passed-tests");
 				}
 			}
 		});
+		if ( config.hidepassed || defined.sessionStorage && sessionStorage.getItem("qunit-filter-passed-tests") ) {
+			filter.checked = true;
+			var ol = document.getElementById("qunit-tests");
+			ol.className = ol.className + " hidepass";
+		}
 		toolbar.appendChild( filter );
 
 		var label = document.createElement("label");
@@ -1654,7 +777,7 @@ addEvent(window, "load", function() {
 		toolbar.appendChild( label );
 	}
 
-	var main = id('main') || id('qunit-fixture');
+	var main = id('qunit-fixture');
 	if ( main ) {
 		config.fixture = main.innerHTML;
 	}
@@ -1662,65 +785,95 @@ addEvent(window, "load", function() {
 	if (config.autostart) {
 		QUnit.start();
 	}
-});
+};
+
+addEvent(window, "load", QUnit.load);
+
+// addEvent(window, "error") gives us a useless event object
+window.onerror = function( message, file, line ) {
+	if ( QUnit.config.current ) {
+		ok( false, message + ", " + file + ":" + line );
+	} else {
+		test( "global failure", function() {
+			ok( false, message + ", " + file + ":" + line );
+		});
+	}
+};
 
 function done() {
 	config.autorun = true;
 
 	// Log the last module results
 	if ( config.currentModule ) {
-		QUnit.moduleDone( config.currentModule, config.moduleStats.bad, config.moduleStats.all );
+		runLoggingCallbacks( 'moduleDone', QUnit, {
+			name: config.currentModule,
+			failed: config.moduleStats.bad,
+			passed: config.moduleStats.all - config.moduleStats.bad,
+			total: config.moduleStats.all
+		} );
 	}
 
 	var banner = id("qunit-banner"),
 		tests = id("qunit-tests"),
-		html = ['Tests completed in ',
-		+new Date - config.started, ' milliseconds.<br/>',
-		'<span class="passed">', config.stats.all - config.stats.bad, '</span> tests of <span class="total">', config.stats.all, '</span> passed, <span class="failed">', config.stats.bad,'</span> failed.'].join('');
+		runtime = +new Date - config.started,
+		passed = config.stats.all - config.stats.bad,
+		html = [
+			'Tests completed in ',
+			runtime,
+			' milliseconds.<br/>',
+			'<span class="passed">',
+			passed,
+			'</span> tests of <span class="total">',
+			config.stats.all,
+			'</span> passed, <span class="failed">',
+			config.stats.bad,
+			'</span> failed.'
+		].join('');
 
 	if ( banner ) {
 		banner.className = (config.stats.bad ? "qunit-fail" : "qunit-pass");
 	}
 
 	if ( tests ) {
-		var result = id("qunit-testresult");
-
-		if ( !result ) {
-			result = document.createElement("p");
-			result.id = "qunit-testresult";
-			result.className = "result";
-			tests.parentNode.insertBefore( result, tests.nextSibling );
-		}
-
-		result.innerHTML = html;
+		id( "qunit-testresult" ).innerHTML = html;
 	}
 
-	QUnit.done( config.stats.bad, config.stats.all );
+	if ( config.altertitle && typeof document !== "undefined" && document.title ) {
+		// show ✖ for good, ✔ for bad suite result in title
+		// use escape sequences in case file gets loaded with non-utf-8-charset
+		document.title = [
+			(config.stats.bad ? "\u2716" : "\u2714"),
+			document.title.replace(/^[\u2714\u2716] /i, "")
+		].join(" ");
+	}
+
+	runLoggingCallbacks( 'done', QUnit, {
+		failed: config.stats.bad,
+		passed: passed,
+		total: config.stats.all,
+		runtime: runtime
+	} );
 }
 
 function validTest( name ) {
-	var i = config.filters.length,
+	var filter = config.filter,
 		run = false;
 
-	if ( !i ) {
+	if ( !filter ) {
 		return true;
 	}
 
-	while ( i-- ) {
-		var filter = config.filters[i],
-			not = filter.charAt(0) == '!';
+	var not = filter.charAt( 0 ) === "!";
+	if ( not ) {
+		filter = filter.slice( 1 );
+	}
 
-		if ( not ) {
-			filter = filter.slice(1);
-		}
+	if ( name.indexOf( filter ) !== -1 ) {
+		return !not;
+	}
 
-		if ( name.indexOf(filter) !== -1 ) {
-			return !not;
-		}
-
-		if ( not ) {
-			run = true;
-		}
+	if ( not ) {
+		run = true;
 	}
 
 	return run;
@@ -1738,24 +891,22 @@ function sourceFromStacktrace() {
 		} else if (e.stack) {
 			// Firefox, Chrome
 			return e.stack.split("\n")[4];
+		} else if (e.sourceURL) {
+			// Safari, PhantomJS
+			// TODO sourceURL points at the 'throw new Error' line above, useless
+			//return e.sourceURL + ":" + e.line;
 		}
 	}
 }
 
-function resultDisplayStyle(passed) {
-	return passed && id("qunit-filter-pass") && id("qunit-filter-pass").checked ? 'none' : '';
-}
-
-function escapeHtml(s) {
+function escapeInnerText(s) {
 	if (!s) {
 		return "";
 	}
 	s = s + "";
-	return s.replace(/[\&"<>\\]/g, function(s) {
+	return s.replace(/[\&<>]/g, function(s) {
 		switch(s) {
 			case "&": return "&amp;";
-			case "\\": return "\\\\";
-			case '"': return '\"';
 			case "<": return "&lt;";
 			case ">": return "&gt;";
 			default: return s;
@@ -1763,28 +914,32 @@ function escapeHtml(s) {
 	});
 }
 
-function synchronize( callback ) {
+function synchronize( callback, last ) {
 	config.queue.push( callback );
 
 	if ( config.autorun && !config.blocking ) {
-		process();
+		process(last);
 	}
 }
 
-function process() {
-	var start = (new Date()).getTime();
+function process( last ) {
+	var start = new Date().getTime();
+	config.depth = config.depth ? config.depth + 1 : 1;
 
 	while ( config.queue.length && !config.blocking ) {
-		if ( config.updateRate <= 0 || (((new Date()).getTime() - start) < config.updateRate) ) {
+		if ( !defined.setTimeout || config.updateRate <= 0 || ( ( new Date().getTime() - start ) < config.updateRate ) ) {
 			config.queue.shift()();
 		} else {
-			window.setTimeout( process, 13 );
+			window.setTimeout( function(){
+				process( last );
+			}, 13 );
 			break;
 		}
 	}
-  if (!config.blocking && !config.queue.length) {
-    done();
-  }
+	config.depth--;
+	if ( last && !config.blocking && !config.queue.length && config.depth === 0 ) {
+		done();
+	}
 }
 
 function saveGlobal() {
@@ -1792,6 +947,9 @@ function saveGlobal() {
 
 	if ( config.noglobals ) {
 		for ( var key in window ) {
+			if ( !hasOwn.call( window, key ) ) {
+				continue;
+			}
 			config.pollution.push( key );
 		}
 	}
@@ -1801,16 +959,14 @@ function checkPollution( name ) {
 	var old = config.pollution;
 	saveGlobal();
 
-	var newGlobals = diff( old, config.pollution );
+	var newGlobals = diff( config.pollution, old );
 	if ( newGlobals.length > 0 ) {
 		ok( false, "Introduced global variable(s): " + newGlobals.join(", ") );
-		config.current.expected++;
 	}
 
-	var deletedGlobals = diff( config.pollution, old );
+	var deletedGlobals = diff( old, config.pollution );
 	if ( deletedGlobals.length > 0 ) {
 		ok( false, "Deleted global variable(s): " + deletedGlobals.join(", ") );
-		config.current.expected++;
 	}
 }
 
@@ -1842,7 +998,13 @@ function fail(message, exception, callback) {
 
 function extend(a, b) {
 	for ( var prop in b ) {
-		a[prop] = b[prop];
+		if ( b[prop] === undefined ) {
+			delete a[prop];
+
+		// Avoid "Member not found" error in IE8 caused by setting window.constructor
+		} else if ( prop !== "constructor" || a !== window ) {
+			a[prop] = b[prop];
+		}
 	}
 
 	return a;
@@ -1863,176 +1025,216 @@ function id(name) {
 		document.getElementById( name );
 }
 
+function registerLoggingCallback(key){
+	return function(callback){
+		config[key].push( callback );
+	};
+}
+
+// Supports deprecated method of completely overwriting logging callbacks
+function runLoggingCallbacks(key, scope, args) {
+	//debugger;
+	var callbacks;
+	if ( QUnit.hasOwnProperty(key) ) {
+		QUnit[key].call(scope, args);
+	} else {
+		callbacks = config[key];
+		for( var i = 0; i < callbacks.length; i++ ) {
+			callbacks[i].call( scope, args );
+		}
+	}
+}
+
 // Test for equality any JavaScript type.
-// Discussions and reference: http://philrathe.com/articles/equiv
-// Test suites: http://philrathe.com/tests/equiv
 // Author: Philippe Rathé <prathe@gmail.com>
 QUnit.equiv = function () {
 
-    var innerEquiv; // the real equiv function
-    var callers = []; // stack to decide between skip/abort functions
-    var parents = []; // stack to avoiding loops from circular referencing
+	var innerEquiv; // the real equiv function
+	var callers = []; // stack to decide between skip/abort functions
+	var parents = []; // stack to avoiding loops from circular referencing
 
-    // Call the o related callback with the given arguments.
-    function bindCallbacks(o, callbacks, args) {
-        var prop = QUnit.objectType(o);
-        if (prop) {
-            if (QUnit.objectType(callbacks[prop]) === "function") {
-                return callbacks[prop].apply(callbacks, args);
-            } else {
-                return callbacks[prop]; // or undefined
-            }
-        }
-    }
+	// Call the o related callback with the given arguments.
+	function bindCallbacks(o, callbacks, args) {
+		var prop = QUnit.objectType(o);
+		if (prop) {
+			if (QUnit.objectType(callbacks[prop]) === "function") {
+				return callbacks[prop].apply(callbacks, args);
+			} else {
+				return callbacks[prop]; // or undefined
+			}
+		}
+	}
 
-    var callbacks = function () {
+	var getProto = Object.getPrototypeOf || function (obj) {
+		return obj.__proto__;
+	};
 
-        // for string, boolean, number and null
-        function useStrictEquality(b, a) {
-            if (b instanceof a.constructor || a instanceof b.constructor) {
-                // to catch short annotaion VS 'new' annotation of a declaration
-                // e.g. var i = 1;
-                //      var j = new Number(1);
-                return a == b;
-            } else {
-                return a === b;
-            }
-        }
+	var callbacks = function () {
 
-        return {
-            "string": useStrictEquality,
-            "boolean": useStrictEquality,
-            "number": useStrictEquality,
-            "null": useStrictEquality,
-            "undefined": useStrictEquality,
+		// for string, boolean, number and null
+		function useStrictEquality(b, a) {
+			if (b instanceof a.constructor || a instanceof b.constructor) {
+				// to catch short annotaion VS 'new' annotation of a
+				// declaration
+				// e.g. var i = 1;
+				// var j = new Number(1);
+				return a == b;
+			} else {
+				return a === b;
+			}
+		}
 
-            "nan": function (b) {
-                return isNaN(b);
-            },
+		return {
+			"string" : useStrictEquality,
+			"boolean" : useStrictEquality,
+			"number" : useStrictEquality,
+			"null" : useStrictEquality,
+			"undefined" : useStrictEquality,
 
-            "date": function (b, a) {
-                return QUnit.objectType(b) === "date" && a.valueOf() === b.valueOf();
-            },
+			"nan" : function(b) {
+				return isNaN(b);
+			},
 
-            "regexp": function (b, a) {
-                return QUnit.objectType(b) === "regexp" &&
-                    a.source === b.source && // the regex itself
-                    a.global === b.global && // and its modifers (gmi) ...
-                    a.ignoreCase === b.ignoreCase &&
-                    a.multiline === b.multiline;
-            },
+			"date" : function(b, a) {
+				return QUnit.objectType(b) === "date"
+						&& a.valueOf() === b.valueOf();
+			},
 
-            // - skip when the property is a method of an instance (OOP)
-            // - abort otherwise,
-            //   initial === would have catch identical references anyway
-            "function": function () {
-                var caller = callers[callers.length - 1];
-                return caller !== Object &&
-                        typeof caller !== "undefined";
-            },
+			"regexp" : function(b, a) {
+				return QUnit.objectType(b) === "regexp"
+						&& a.source === b.source && // the regex itself
+						a.global === b.global && // and its modifers
+													// (gmi) ...
+						a.ignoreCase === b.ignoreCase
+						&& a.multiline === b.multiline;
+			},
 
-            "array": function (b, a) {
-                var i, j, loop;
-                var len;
+			// - skip when the property is a method of an instance (OOP)
+			// - abort otherwise,
+			// initial === would have catch identical references anyway
+			"function" : function() {
+				var caller = callers[callers.length - 1];
+				return caller !== Object && typeof caller !== "undefined";
+			},
 
-                // b could be an object literal here
-                if ( ! (QUnit.objectType(b) === "array")) {
-                    return false;
-                }
+			"array" : function(b, a) {
+				var i, j, loop;
+				var len;
 
-                len = a.length;
-                if (len !== b.length) { // safe and faster
-                    return false;
-                }
+				// b could be an object literal here
+				if (!(QUnit.objectType(b) === "array")) {
+					return false;
+				}
 
-                //track reference to avoid circular references
-                parents.push(a);
-                for (i = 0; i < len; i++) {
-                    loop = false;
-                    for(j=0;j<parents.length;j++){
-                        if(parents[j] === a[i]){
-                            loop = true;//dont rewalk array
-                        }
-                    }
-                    if (!loop && ! innerEquiv(a[i], b[i])) {
-                        parents.pop();
-                        return false;
-                    }
-                }
-                parents.pop();
-                return true;
-            },
+				len = a.length;
+				if (len !== b.length) { // safe and faster
+					return false;
+				}
 
-            "object": function (b, a) {
-                var i, j, loop;
-                var eq = true; // unless we can proove it
-                var aProperties = [], bProperties = []; // collection of strings
+				// track reference to avoid circular references
+				parents.push(a);
+				for (i = 0; i < len; i++) {
+					loop = false;
+					for (j = 0; j < parents.length; j++) {
+						if (parents[j] === a[i]) {
+							loop = true;// dont rewalk array
+						}
+					}
+					if (!loop && !innerEquiv(a[i], b[i])) {
+						parents.pop();
+						return false;
+					}
+				}
+				parents.pop();
+				return true;
+			},
 
-                // comparing constructors is more strict than using instanceof
-                if ( a.constructor !== b.constructor) {
-                    return false;
-                }
+			"object" : function(b, a) {
+				var i, j, loop;
+				var eq = true; // unless we can proove it
+				var aProperties = [], bProperties = []; // collection of
+														// strings
 
-                // stack constructor before traversing properties
-                callers.push(a.constructor);
-                //track reference to avoid circular references
-                parents.push(a);
+				// comparing constructors is more strict than using
+				// instanceof
+				if (a.constructor !== b.constructor) {
+					// Allow objects with no prototype to be equivalent to
+					// objects with Object as their constructor.
+					if (!((getProto(a) === null && getProto(b) === Object.prototype) ||
+						  (getProto(b) === null && getProto(a) === Object.prototype)))
+					{
+						return false;
+					}
+				}
 
-                for (i in a) { // be strict: don't ensures hasOwnProperty and go deep
-                    loop = false;
-                    for(j=0;j<parents.length;j++){
-                        if(parents[j] === a[i])
-                            loop = true; //don't go down the same path twice
-                    }
-                    aProperties.push(i); // collect a's properties
+				// stack constructor before traversing properties
+				callers.push(a.constructor);
+				// track reference to avoid circular references
+				parents.push(a);
 
-                    if (!loop && ! innerEquiv(a[i], b[i])) {
-                        eq = false;
-                        break;
-                    }
-                }
+				for (i in a) { // be strict: don't ensures hasOwnProperty
+								// and go deep
+					loop = false;
+					for (j = 0; j < parents.length; j++) {
+						if (parents[j] === a[i])
+							loop = true; // don't go down the same path
+											// twice
+					}
+					aProperties.push(i); // collect a's properties
 
-                callers.pop(); // unstack, we are done
-                parents.pop();
+					if (!loop && !innerEquiv(a[i], b[i])) {
+						eq = false;
+						break;
+					}
+				}
 
-                for (i in b) {
-                    bProperties.push(i); // collect b's properties
-                }
+				callers.pop(); // unstack, we are done
+				parents.pop();
 
-                // Ensures identical properties name
-                return eq && innerEquiv(aProperties.sort(), bProperties.sort());
-            }
-        };
-    }();
+				for (i in b) {
+					bProperties.push(i); // collect b's properties
+				}
 
-    innerEquiv = function () { // can take multiple arguments
-        var args = Array.prototype.slice.apply(arguments);
-        if (args.length < 2) {
-            return true; // end transition
-        }
+				// Ensures identical properties name
+				return eq
+						&& innerEquiv(aProperties.sort(), bProperties
+								.sort());
+			}
+		};
+	}();
 
-        return (function (a, b) {
-            if (a === b) {
-                return true; // catch the most you can
-            } else if (a === null || b === null || typeof a === "undefined" || typeof b === "undefined" || QUnit.objectType(a) !== QUnit.objectType(b)) {
-                return false; // don't lose time with error prone cases
-            } else {
-                return bindCallbacks(a, callbacks, [b, a]);
-            }
+	innerEquiv = function() { // can take multiple arguments
+		var args = Array.prototype.slice.apply(arguments);
+		if (args.length < 2) {
+			return true; // end transition
+		}
 
-        // apply transition with (1..n) arguments
-        })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1));
-    };
+		return (function(a, b) {
+			if (a === b) {
+				return true; // catch the most you can
+			} else if (a === null || b === null || typeof a === "undefined"
+					|| typeof b === "undefined"
+					|| QUnit.objectType(a) !== QUnit.objectType(b)) {
+				return false; // don't lose time with error prone cases
+			} else {
+				return bindCallbacks(a, callbacks, [ b, a ]);
+			}
 
-    return innerEquiv;
+			// apply transition with (1..n) arguments
+		})(args[0], args[1])
+				&& arguments.callee.apply(this, args.splice(1,
+						args.length - 1));
+	};
+
+	return innerEquiv;
 
 }();
 
 /**
- * jsDump
- * Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
- * Licensed under BSD (http://www.opensource.org/licenses/bsd-license.php)
- * Date: 5/15/2008
+ * jsDump Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com |
+ * http://flesler.blogspot.com Licensed under BSD
+ * (http://www.opensource.org/licenses/bsd-license.php) Date: 5/15/2008
+ *
  * @projectDescription Advanced and extensible data dumping for Javascript.
  * @version 1.0.0
  * @author Ariel Flesler
@@ -2055,11 +1257,11 @@ QUnit.jsDump = (function() {
 			return pre + post;
 		return [ pre, inner + arr, base + post ].join(s);
 	};
-	function array( arr ) {
-		var i = arr.length,	ret = Array(i);
+	function array( arr, stack ) {
+		var i = arr.length, ret = Array(i);
 		this.up();
 		while ( i-- )
-			ret[i] = this.parse( arr[i] );
+			ret[i] = this.parse( arr[i] , undefined , stack);
 		this.down();
 		return join( '[', ret, ']' );
 	};
@@ -2067,13 +1269,23 @@ QUnit.jsDump = (function() {
 	var reName = /^function (\w+)/;
 
 	var jsDump = {
-		parse:function( obj, type ) { //type is used mostly internally, you can fix a (custom)type in advance
-			var	parser = this.parsers[ type || this.typeOf(obj) ];
+		parse:function( obj, type, stack ) { //type is used mostly internally, you can fix a (custom)type in advance
+			stack = stack || [ ];
+			var parser = this.parsers[ type || this.typeOf(obj) ];
 			type = typeof parser;
-
-			return type == 'function' ? parser.call( this, obj ) :
-				   type == 'string' ? parser :
-				   this.parsers.error;
+			var inStack = inArray(obj, stack);
+			if (inStack != -1) {
+				return 'recursion('+(inStack - stack.length)+')';
+			}
+			//else
+			if (type == 'function')  {
+					stack.push(obj);
+					var res = parser.call( this, obj, stack );
+					stack.pop();
+					return res;
+			}
+			// else
+			return (type == 'string') ? parser : this.parsers.error;
 		},
 		typeOf:function( obj ) {
 			var type;
@@ -2093,7 +1305,12 @@ QUnit.jsDump = (function() {
 				type = "document";
 			} else if (obj.nodeType) {
 				type = "node";
-			} else if (typeof obj === "object" && typeof obj.length === "number" && obj.length >= 0) {
+			} else if (
+				// native arrays
+				toString.call( obj ) === "[object Array]" ||
+				// NodeList objects
+				( typeof obj.length === "number" && typeof obj.item !== "undefined" && ( obj.length ? obj.item(0) === obj[0] : ( obj.item( 0 ) === null && typeof obj[0] === "undefined" ) ) )
+			) {
 				type = "array";
 			} else {
 				type = typeof obj;
@@ -2133,7 +1350,7 @@ QUnit.jsDump = (function() {
 			error:'[ERROR]', //when no parser is found, shouldn't happen
 			unknown: '[Unknown]',
 			'null':'null',
-			undefined:'undefined',
+			'undefined':'undefined',
 			'function':function( fn ) {
 				var ret = 'function',
 					name = 'name' in fn ? fn.name : (reName.exec(fn)||[])[1];//functions never have name in IE
@@ -2147,11 +1364,13 @@ QUnit.jsDump = (function() {
 			array: array,
 			nodelist: array,
 			arguments: array,
-			object:function( map ) {
+			object:function( map, stack ) {
 				var ret = [ ];
 				QUnit.jsDump.up();
-				for ( var key in map )
-					ret.push( QUnit.jsDump.parse(key,'key') + ': ' + QUnit.jsDump.parse(map[key]) );
+				for ( var key in map ) {
+				    var val = map[key];
+					ret.push( QUnit.jsDump.parse(key,'key') + ': ' + QUnit.jsDump.parse(val, undefined, stack));
+                }
 				QUnit.jsDump.down();
 				return join( '{', ret, '}' );
 			},
@@ -2220,6 +1439,21 @@ function getText( elems ) {
 	return ret;
 };
 
+//from jquery.js
+function inArray( elem, array ) {
+	if ( array.indexOf ) {
+		return array.indexOf( elem );
+	}
+
+	for ( var i = 0, length = array.length; i < length; i++ ) {
+		if ( array[ i ] === elem ) {
+			return i;
+		}
+	}
+
+	return -1;
+}
+
 /*
  * Javascript Diff Algorithm
  *  By John Resig (http://ejohn.org/)
@@ -2235,14 +1469,14 @@ function getText( elems ) {
  * QUnit.diff("the quick brown fox jumped over", "the quick fox jumps over") == "the  quick <del>brown </del> fox <del>jumped </del><ins>jumps </ins> over"
  */
 QUnit.diff = (function() {
-	function diff(o, n){
-		var ns = new Object();
-		var os = new Object();
+	function diff(o, n) {
+		var ns = {};
+		var os = {};
 
 		for (var i = 0; i < n.length; i++) {
 			if (ns[n[i]] == null)
 				ns[n[i]] = {
-					rows: new Array(),
+					rows: [],
 					o: null
 				};
 			ns[n[i]].rows.push(i);
@@ -2251,13 +1485,16 @@ QUnit.diff = (function() {
 		for (var i = 0; i < o.length; i++) {
 			if (os[o[i]] == null)
 				os[o[i]] = {
-					rows: new Array(),
+					rows: [],
 					n: null
 				};
 			os[o[i]].rows.push(i);
 		}
 
 		for (var i in ns) {
+			if ( !hasOwn.call( ns, i ) ) {
+				continue;
+			}
 			if (ns[i].rows.length == 1 && typeof(os[i]) != "undefined" && os[i].rows.length == 1) {
 				n[ns[i].rows[0]] = {
 					text: n[ns[i].rows[0]],
@@ -2304,7 +1541,7 @@ QUnit.diff = (function() {
 		};
 	}
 
-	return function(o, n){
+	return function(o, n) {
 		o = o.replace(/\s+$/, '');
 		n = n.replace(/\s+$/, '');
 		var out = diff(o == "" ? [] : o.split(/\s+/), n == "" ? [] : n.split(/\s+/));
@@ -2357,4 +1594,4 @@ QUnit.diff = (function() {
 	};
 })();
 
-})(this);
\ No newline at end of file
+})(this);

From 5533c12033a02e1e32fdcf236a792fad73ade29f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 30 Jan 2012 10:53:46 -0500
Subject: [PATCH 480/533] Fixes #437 -- add an 'immediate' parameter to
 _.debounce.

---
 test/functions.js | 14 ++++++++++++++
 underscore.js     |  8 +++++---
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index e6c402a18..ff95f4368 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -146,6 +146,20 @@ $(document).ready(function() {
     _.delay(function(){ ok(counter == 1, "incr was debounced"); start(); }, 220);
   });
 
+  asyncTest("functions: debounce asap", 2, function() {
+    var counter = 0;
+    var incr = function(){ counter++; };
+    var debouncedIncr = _.debounce(incr, 50, true);
+    debouncedIncr(); debouncedIncr(); debouncedIncr();
+    equal(counter, 1, 'incr was called immediately');
+    setTimeout(debouncedIncr, 30);
+    setTimeout(debouncedIncr, 60);
+    setTimeout(debouncedIncr, 90);
+    setTimeout(debouncedIncr, 120);
+    setTimeout(debouncedIncr, 150);
+    _.delay(function(){ equal(counter, 1, "incr was debounced"); start(); }, 220);
+  });
+
   test("functions: once", function() {
     var num = 0;
     var increment = _.once(function(){ num++; });
diff --git a/underscore.js b/underscore.js
index c4e8c8a59..c75bf4f75 100644
--- a/underscore.js
+++ b/underscore.js
@@ -548,15 +548,17 @@
 
   // Returns a function, that, as long as it continues to be invoked, will not
   // be triggered. The function will be called after it stops being called for
-  // N milliseconds.
-  _.debounce = function(func, wait) {
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
     var timeout;
     return function() {
       var context = this, args = arguments;
       var later = function() {
         timeout = null;
-        func.apply(context, args);
+        if (!immediate) func.apply(context, args);
       };
+      if (immediate && !timeout) func.apply(context, args);
       clearTimeout(timeout);
       timeout = setTimeout(later, wait);
     };

From af4b86e0a6c4504bb8f402872498b99400fcf481 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 3 Feb 2012 10:18:44 -0500
Subject: [PATCH 481/533] making toArray example clearer.

---
 index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 181e10983..9c10bc272 100644
--- a/index.html
+++ b/index.html
@@ -579,8 +579,8 @@ _.shuffle([1, 2, 3, 4, 5, 6]);
         real Array. Useful for transmuting the <b>arguments</b> object.
       </p>
       <pre>
-(function(){ return _.toArray(arguments).slice(0); })(1, 2, 3);
-=&gt; [1, 2, 3]
+(function(){ return _.toArray(arguments).slice(1); })(1, 2, 3, 4);
+=&gt; [2, 3, 4]
 </pre>
 
       <p id="size">

From 64ed34f94962679bb305bf67a6b9897c62d1ea87 Mon Sep 17 00:00:00 2001
From: Jo Liss <joliss42@gmail.com>
Date: Mon, 6 Feb 2012 14:14:50 +0100
Subject: [PATCH 482/533] Make it clearer that extend and defaults modify in
 place *and* return

---
 index.html | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 9c10bc272..ab8d15095 100644
--- a/index.html
+++ b/index.html
@@ -1005,8 +1005,9 @@ _.functions(_);
         <b class="header">extend</b><code>_.extend(destination, *sources)</code>
         <br />
         Copy all of the properties in the <b>source</b> objects over to the
-        <b>destination</b> object. It's in-order, so the last source will override
-        properties of the same name in previous arguments.
+        <b>destination</b> object, and return the <b>destination</b> object.
+        It's in-order, so the last source will override properties of the same
+        name in previous arguments.
       </p>
       <pre>
 _.extend({name : 'moe'}, {age : 50});
@@ -1017,8 +1018,8 @@ _.extend({name : 'moe'}, {age : 50});
         <b class="header">defaults</b><code>_.defaults(object, *defaults)</code>
         <br />
         Fill in missing properties in <b>object</b> with default values from the
-        <b>defaults</b> objects. As soon as the property is filled, further defaults
-        will have no effect.
+        <b>defaults</b> objects, and return the <b>object</b>. As soon as the
+        property is filled, further defaults will have no effect.
       </p>
       <pre>
 var iceCream = {flavor : "chocolate"};

From ff544ae997b9f600f43c39c932f45fad533667cd Mon Sep 17 00:00:00 2001
From: Michael Ficarra <github@michael.ficarra.me>
Date: Mon, 6 Feb 2012 12:24:13 -0500
Subject: [PATCH 483/533] `_.difference` should perform a shallow flatten

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index c75bf4f75..a9d179d50 100644
--- a/underscore.js
+++ b/underscore.js
@@ -403,7 +403,7 @@
   // Take the difference between one array and a number of other arrays.
   // Only the elements present in just the first array will remain.
   _.difference = function(array) {
-    var rest = _.flatten(slice.call(arguments, 1));
+    var rest = _.flatten(slice.call(arguments, 1), true);
     return _.filter(array, function(value){ return !_.include(rest, value); });
   };
 

From c2a58725bee234dd54128ac93a58f996110fd3eb Mon Sep 17 00:00:00 2001
From: Derek Brans <derek@kruxdigital.com>
Date: Thu, 16 Feb 2012 16:31:18 -0500
Subject: [PATCH 484/533] Fix for #478 - any and every should be consistent
 about casting result to boolean

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index a9d179d50..a283e55ff 100644
--- a/underscore.js
+++ b/underscore.js
@@ -180,7 +180,7 @@
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) return breaker;
     });
-    return result;
+    return !!result;
   };
 
   // Determine if at least one element in the object matches a truth test.

From 7c7c38decf811953dc97cad12b3bbe5d2f102d73 Mon Sep 17 00:00:00 2001
From: Derek Brans <derek@kruxdigital.com>
Date: Fri, 17 Feb 2012 11:40:47 -0500
Subject: [PATCH 485/533] Test: any and every cast result to boolean. Relates
 to #478

---
 test/collections.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/collections.js b/test/collections.js
index 3f623b4d9..71ef5a71c 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -145,6 +145,8 @@ $(document).ready(function() {
     ok(!_.all([true, false, true], _.identity), 'one false value');
     ok(_.all([0, 10, 28], function(num){ return num % 2 == 0; }), 'even numbers');
     ok(!_.all([0, 11, 28], function(num){ return num % 2 == 0; }), 'an odd number');
+    ok(_.all([1], _.identity) === true, 'cast to boolean - true');
+    ok(_.all([0], _.identity) === false, 'cast to boolean - false');
     ok(_.every([true, true, true], _.identity), 'aliased as "every"');
   });
 
@@ -158,6 +160,8 @@ $(document).ready(function() {
     ok(!_.any([null, 0, '', false]), 'falsy values');
     ok(!_.any([1, 11, 29], function(num){ return num % 2 == 0; }), 'all odd numbers');
     ok(_.any([1, 10, 29], function(num){ return num % 2 == 0; }), 'an even number');
+    ok(_.any([1], _.identity) === true, 'cast to boolean - true');
+    ok(_.any([0], _.identity) === false, 'cast to boolean - false');
     ok(_.some([false, false, true]), 'aliased as "some"');
     Array.prototype.some = nativeSome;
   });

From c8d4025621e9e471a9584e01118ce31b47600f86 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@me.com>
Date: Mon, 20 Feb 2012 12:21:36 -0700
Subject: [PATCH 486/533] Issue #484: `_.uniq()` should work with sparse
 arrays.

---
 test/arrays.js | 22 ++++++++++++++++++++++
 underscore.js  | 13 ++++++-------
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index 54cd9f8d2..ff430648d 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -89,6 +89,28 @@ $(document).ready(function() {
 
     var result = (function(){ return _.uniq(arguments); })(1, 2, 1, 3, 1, 4);
     equal(result.join(', '), '1, 2, 3, 4', 'works on an arguments object');
+
+    var list = [];
+    list[2] = list[3] = null;
+    list[8] = 2;
+    list[10] = 2;
+    list[11] = 5;
+    list[14] = 5;
+    list[16] = 8;
+    list[19] = 8;
+    list[26] = list[29] = undefined;
+    list[33] = "hi";
+
+    var result = _.uniq(list, true);
+    if (0 in [undefined]) {
+      // According to the JScript ES 3 spec, section 2.1.26, JScript 5.x (IE <=
+      // 8) treats `undefined` elements in arrays as elisions.
+      deepEqual(result, [null, 2, 5, 8, undefined, "hi"], "Works with sorted sparse arrays");
+      equal(result.length, 6, "The resulting array should not be sparse");
+    } else {
+      deepEqual(result, [null, 2, 5, 8, "hi"], "Works with sorted sparse arrays where `undefined` elements are elided");
+      equal(result.length, 5, "The resulting array should not be sparse");
+    }
   });
 
   test("arrays: intersection", function() {
diff --git a/underscore.js b/underscore.js
index a283e55ff..2d3ccdfd6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -371,16 +371,15 @@
   // been sorted, you have the option of using a faster algorithm.
   // Aliased as `unique`.
   _.uniq = _.unique = function(array, isSorted, iterator) {
-    var initial = iterator ? _.map(array, iterator) : array;
-    var result = [];
-    _.reduce(initial, function(memo, el, i) {
-      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
-        memo[memo.length] = el;
-        result[result.length] = array[i];
+    var results = [], previous;
+    _.reduce(iterator ? _.map(array, iterator) : array, function (memo, value, index) {
+      if (array.length < 3 || isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
+        memo.push(previous = value);
+        results.push(array[index]);
       }
       return memo;
     }, []);
-    return result;
+    return results;
   };
 
   // Produce an array that contains the union: each distinct element from all of

From 0285f47f7835fd62919d72cf2d399756f86a8044 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@me.com>
Date: Mon, 20 Feb 2012 12:36:48 -0700
Subject: [PATCH 487/533] `_.uniq()`: Remove unused `previous` variable.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 2d3ccdfd6..9b366cb5f 100644
--- a/underscore.js
+++ b/underscore.js
@@ -371,10 +371,10 @@
   // been sorted, you have the option of using a faster algorithm.
   // Aliased as `unique`.
   _.uniq = _.unique = function(array, isSorted, iterator) {
-    var results = [], previous;
+    var results = [];
     _.reduce(iterator ? _.map(array, iterator) : array, function (memo, value, index) {
       if (array.length < 3 || isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
-        memo.push(previous = value);
+        memo.push(value);
         results.push(array[index]);
       }
       return memo;

From 8808f7d531733a0e88d31f122ffc3568d1dfce96 Mon Sep 17 00:00:00 2001
From: Kit Cambridge <kitcambridge@me.com>
Date: Tue, 21 Feb 2012 10:35:55 -0700
Subject: [PATCH 488/533] Un-golf `_.uniq()`.

---
 underscore.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index 9b366cb5f..88da6e1d8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -371,9 +371,12 @@
   // been sorted, you have the option of using a faster algorithm.
   // Aliased as `unique`.
   _.uniq = _.unique = function(array, isSorted, iterator) {
+    var initial = iterator ? _.map(array, iterator) : array;
     var results = [];
-    _.reduce(iterator ? _.map(array, iterator) : array, function (memo, value, index) {
-      if (array.length < 3 || isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
+    // The `isSorted` flag is irrelevant if the array only contains two elements.
+    if (array.length < 3) isSorted = true;
+    _.reduce(initial, function (memo, value, index) {
+      if (isSorted ? _.last(memo) !== value || !memo.length : !_.include(memo, value)) {
         memo.push(value);
         results.push(array[index]);
       }

From 5677a0c6ebcae6e3f7915dcfed43175618629a5e Mon Sep 17 00:00:00 2001
From: "U-EM\\mib" <mib@EM-PC-MIB3.electronic-minds.local>
Date: Mon, 27 Feb 2012 17:26:26 +0100
Subject: [PATCH 489/533] added favicon, closes #492

---
 docs/favicon.ico     | Bin 0 -> 1406 bytes
 docs/underscore.html |   2 +-
 favicon.ico          | Bin 0 -> 1406 bytes
 index.html           |   1 +
 4 files changed, 2 insertions(+), 1 deletion(-)
 create mode 100755 docs/favicon.ico
 create mode 100755 favicon.ico

diff --git a/docs/favicon.ico b/docs/favicon.ico
new file mode 100755
index 0000000000000000000000000000000000000000..03049683875ee7207b4ee62241fc6977956723c7
GIT binary patch
literal 1406
zcmZQzU<5(|0R|w+!H~hqz#zuJz@P!dKp_SNAO?x!16vCj7#y|msTh?T4S~@R7;Yi(
a|NnmmMkru{0(Aax^D{300E2>o91H*{%ptM>

literal 0
HcmV?d00001

diff --git a/docs/underscore.html b/docs/underscore.html
index 0c2bd9652..ccdb2d3f5 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.1
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" /> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.1
 (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
diff --git a/favicon.ico b/favicon.ico
new file mode 100755
index 0000000000000000000000000000000000000000..03049683875ee7207b4ee62241fc6977956723c7
GIT binary patch
literal 1406
zcmZQzU<5(|0R|w+!H~hqz#zuJz@P!dKp_SNAO?x!16vCj7#y|msTh?T4S~@R7;Yi(
a|NnmmMkru{0(Aax^D{300E2>o91H*{%ptM>

literal 0
HcmV?d00001

diff --git a/index.html b/index.html
index ab8d15095..9165f1428 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,7 @@
 <head>
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
+  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />  
   <title>Underscore.js</title>
   <style>
     body {

From d84410bbe6f6f07d2c359f3f449561bcfda61d2e Mon Sep 17 00:00:00 2001
From: "U-EM\\mib" <mib@EM-PC-MIB3.electronic-minds.local>
Date: Mon, 27 Feb 2012 17:26:26 +0100
Subject: [PATCH 490/533] added favicon, closes #492

---
 docs/favicon.ico     | Bin 0 -> 1406 bytes
 docs/underscore.html |   2 +-
 favicon.ico          | Bin 0 -> 1406 bytes
 index.html           |   1 +
 4 files changed, 2 insertions(+), 1 deletion(-)
 create mode 100755 docs/favicon.ico
 create mode 100755 favicon.ico

diff --git a/docs/favicon.ico b/docs/favicon.ico
new file mode 100755
index 0000000000000000000000000000000000000000..03049683875ee7207b4ee62241fc6977956723c7
GIT binary patch
literal 1406
zcmZQzU<5(|0R|w+!H~hqz#zuJz@P!dKp_SNAO?x!16vCj7#y|msTh?T4S~@R7;Yi(
a|NnmmMkru{0(Aax^D{300E2>o91H*{%ptM>

literal 0
HcmV?d00001

diff --git a/docs/underscore.html b/docs/underscore.html
index 0c2bd9652..ccdb2d3f5 100644
--- a/docs/underscore.html
+++ b/docs/underscore.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">   <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.1
+<!DOCTYPE html>  <html> <head>   <title>underscore.js</title>   <meta http-equiv="content-type" content="text/html; charset=UTF-8">  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" /> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body>   <div id="container">     <div id="background"></div>          <table cellpadding="0" cellspacing="0">       <thead>         <tr>           <th class="docs">             <h1>               underscore.js             </h1>           </th>           <th class="code">           </th>         </tr>       </thead>       <tbody>                               <tr id="section-1">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-1">&#182;</a>               </div>               <pre><code>Underscore.js 1.3.1
 (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
diff --git a/favicon.ico b/favicon.ico
new file mode 100755
index 0000000000000000000000000000000000000000..03049683875ee7207b4ee62241fc6977956723c7
GIT binary patch
literal 1406
zcmZQzU<5(|0R|w+!H~hqz#zuJz@P!dKp_SNAO?x!16vCj7#y|msTh?T4S~@R7;Yi(
a|NnmmMkru{0(Aax^D{300E2>o91H*{%ptM>

literal 0
HcmV?d00001

diff --git a/index.html b/index.html
index 12d6958d1..40848c25c 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,7 @@
 <head>
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
+  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />  
   <title>Underscore.js</title>
   <style>
     body {

From b3eb4a5fcbc22c4bf4e15a09229edf6221676a2a Mon Sep 17 00:00:00 2001
From: Bryan Woods <bryanwoods4e@gmail.com>
Date: Mon, 5 Mar 2012 12:05:39 -0500
Subject: [PATCH 491/533] Aliases `_.take()` to `_.first()` and `_.head()`

---
 test/arrays.js | 2 ++
 underscore.js  | 6 +++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/test/arrays.js b/test/arrays.js
index ff430648d..fc44fa366 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -12,6 +12,8 @@ $(document).ready(function() {
     equal(result, 4, 'works on an arguments object.');
     result = _.map([[1,2,3],[1,2,3]], _.first);
     equal(result.join(','), '1,1', 'works well with _.map');
+    result = (function() { return _.take([1,2,3], 2); })();
+    equal(result.join(','), '1,2', 'aliased as take');
   });
 
   test("arrays: rest", function() {
diff --git a/underscore.js b/underscore.js
index 88da6e1d8..eb1f408e0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -316,9 +316,9 @@
   // ---------------
 
   // Get the first element of an array. Passing **n** will return the first N
-  // values in the array. Aliased as `head`. The **guard** check allows it to work
-  // with `_.map`.
-  _.first = _.head = function(array, n, guard) {
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
     return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
   };
 

From c8ec654e6bbd4ea15872c6f65681f5a469330019 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 10 Mar 2012 16:00:23 +0000
Subject: [PATCH 492/533] Don't call iterable.toArray in _.toArray if not a
 function

---
 test/collections.js | 12 ++++++++++--
 underscore.js       |  2 +-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 71ef5a71c..72f92b989 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -257,8 +257,8 @@ $(document).ready(function() {
 
   test('collections: shuffle', function() {
     var numbers = _.range(10);
-	var shuffled = _.shuffle(numbers).sort();
-	notStrictEqual(numbers, shuffled, 'original object is unmodified');
+    var shuffled = _.shuffle(numbers).sort();
+    notStrictEqual(numbers, shuffled, 'original object is unmodified');
     equal(shuffled.join(','), numbers.join(','), 'contains the same members before and after shuffle');
   });
 
@@ -271,6 +271,14 @@ $(document).ready(function() {
 
     var numbers = _.toArray({one : 1, two : 2, three : 3});
     equal(numbers.join(', '), '1, 2, 3', 'object flattened into array');
+    
+    var objectWithToArrayFunction = {toArray: function() {
+        return [1, 2, 3];
+    }};
+    equal(_.toArray(objectWithToArrayFunction).join(', '), '1, 2, 3', 'toArray method used if present');
+    
+    var objectWithToArrayValue = {toArray: 1};
+    equal(_.toArray(objectWithToArrayValue).join(', '), '1', 'toArray property ignored if not a function');
   });
 
   test('collections: size', function() {
diff --git a/underscore.js b/underscore.js
index 88da6e1d8..4716dde26 100644
--- a/underscore.js
+++ b/underscore.js
@@ -301,7 +301,7 @@
   // Safely convert anything iterable into a real, live array.
   _.toArray = function(iterable) {
     if (!iterable)                return [];
-    if (iterable.toArray)         return iterable.toArray();
+    if (iterable.toArray && _.isFunction(iterable.toArray)) return iterable.toArray();
     if (_.isArray(iterable))      return slice.call(iterable);
     if (_.isArguments(iterable))  return slice.call(iterable);
     return _.values(iterable);

From 414fafb1f4e5daf4d22bfaa1f4e50ee190cf24c4 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Sun, 11 Mar 2012 12:39:13 -0400
Subject: [PATCH 493/533] Allow natural multi-line code evaluation in
 templates.

By escaping `\r`, `\n`, and `\t` earlier, we can unescape
them along with backslashes and single quotes allowing
for the inclusion of single line comments and code without
a terminating semicolon.
---
 test/test.html  |  2 ++
 test/utility.js | 10 +++++++++-
 underscore.js   | 28 ++++++++++++++++++----------
 3 files changed, 29 insertions(+), 11 deletions(-)

diff --git a/test/test.html b/test/test.html
index f8609aa26..86e7300a6 100644
--- a/test/test.html
+++ b/test/test.html
@@ -18,6 +18,7 @@
 <body>
   <div class="underscore-test">
     <h1 id="qunit-header">Underscore Test Suite</h1>
+    <div id="qunit-testrunner-toolbar"></div>
     <h2 id="qunit-banner"></h2>
     <h2 id="qunit-userAgent"></h2>
     <ol id="qunit-tests"></ol>
@@ -34,6 +35,7 @@
 
     <script type="text/html" id="template">
       <%
+      // a comment
       if (data) { data += 12345; }; %>
       <li><%= data %></li>
     </script>
diff --git a/test/utility.js b/test/utility.js
index 6207d3be3..4a59faf1f 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -1,6 +1,14 @@
 $(document).ready(function() {
 
-  module("Utility");
+  var templateSettings = _.templateSettings;
+
+  module("Utility", {
+
+    teardown: function() {
+      _.templateSettings = templateSettings;
+    }
+
+  });
 
   test("utility: noConflict", function() {
     var underscore = _.noConflict();
diff --git a/underscore.js b/underscore.js
index 88da6e1d8..c0b4a84e2 100644
--- a/underscore.js
+++ b/underscore.js
@@ -905,7 +905,15 @@
   // Within an interpolation, evaluation, or escaping, remove HTML escaping
   // that had been previously added.
   var unescape = function(code) {
-    return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'");
+    return code.replace(/\\(\\|'|r|n|t)/g, function(match, char) {
+      switch (char) {
+        case '\\': return '\\';
+        case "'": return "'";
+        case 'r': return '\r';
+        case 'n': return '\n';
+        case 't': return '\t';
+      }
+    });
   };
 
   // JavaScript micro-templating, similar to John Resig's implementation.
@@ -917,18 +925,18 @@
       'with(obj||{}){__p.push(\'' +
       str.replace(/\\/g, '\\\\')
          .replace(/'/g, "\\'")
-         .replace(c.escape || noMatch, function(match, code) {
-           return "',_.escape(" + unescape(code) + "),'";
-         })
-         .replace(c.interpolate || noMatch, function(match, code) {
-           return "'," + unescape(code) + ",'";
-         })
-         .replace(c.evaluate || noMatch, function(match, code) {
-           return "');" + unescape(code).replace(/[\r\n\t]/g, ' ') + ";__p.push('";
-         })
          .replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')
          .replace(/\t/g, '\\t')
+         .replace(c.escape || noMatch, function(match, code) {
+           return "',_.escape(" + unescape(code) + "),\n'";
+         })
+         .replace(c.interpolate || noMatch, function(match, code) {
+           return "'," + unescape(code) + ",\n'";
+         })
+         .replace(c.evaluate || noMatch, function(match, code) {
+           return "');" + unescape(code) + ";\n__p.push('";
+         })
          + "');}return __p.join('');";
     var func = new Function('obj', '_', tmpl);
     if (data) return func(data, _);

From 826e743262792c8cca93c38d2c774a34c81c7cdd Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 12 Mar 2012 19:15:18 -0400
Subject: [PATCH 494/533] Handle \u2028 & \u2029 in _.template.

---
 test/utility.js | 5 +++++
 underscore.js   | 6 +++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/test/utility.js b/test/utility.js
index 4a59faf1f..c285751ea 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -160,4 +160,9 @@ $(document).ready(function() {
     equal(templateWithNull({planet : "world"}), "a null undefined world", "can handle missing escape and evaluate settings");
   });
 
+  test('_.template handles \\u2028 & \\u2029', function() {
+    var tmpl = _.template('<p>\u2028<%= "\\u2028\\u2029" %>\u2029</p>');
+    strictEqual(tmpl(), '<p>\u2028\u2028\u2029\u2029</p>');
+  });
+
 });
diff --git a/underscore.js b/underscore.js
index c0b4a84e2..b956e21ce 100644
--- a/underscore.js
+++ b/underscore.js
@@ -905,13 +905,15 @@
   // Within an interpolation, evaluation, or escaping, remove HTML escaping
   // that had been previously added.
   var unescape = function(code) {
-    return code.replace(/\\(\\|'|r|n|t)/g, function(match, char) {
+    return code.replace(/\\(\\|'|r|n|t|u2028|u2029)/g, function(match, char) {
       switch (char) {
         case '\\': return '\\';
         case "'": return "'";
         case 'r': return '\r';
         case 'n': return '\n';
         case 't': return '\t';
+        case 'u2028': return '\u2028';
+        case 'u2029': return '\u2029';
       }
     });
   };
@@ -928,6 +930,8 @@
          .replace(/\r/g, '\\r')
          .replace(/\n/g, '\\n')
          .replace(/\t/g, '\\t')
+         .replace(/\u2028/g, '\\u2028')
+         .replace(/\u2029/g, '\\u2029')
          .replace(c.escape || noMatch, function(match, code) {
            return "',_.escape(" + unescape(code) + "),\n'";
          })

From f5eb4b09157384c69f28e5cda38c620af8200c41 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Wed, 14 Mar 2012 08:25:01 -0400
Subject: [PATCH 495/533] Clean up _.template.

* Cache regexes.
* Use object properties for lookup instead of switch.
---
 underscore.js | 59 ++++++++++++++++++++++++++++-----------------------
 1 file changed, 32 insertions(+), 27 deletions(-)

diff --git a/underscore.js b/underscore.js
index b956e21ce..4470eab44 100644
--- a/underscore.js
+++ b/underscore.js
@@ -902,19 +902,27 @@
   // guaranteed not to match.
   var noMatch = /.^/;
 
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    '\\': '\\',
+    "'": "'",
+    'r': '\r',
+    'n': '\n',
+    't': '\t',
+    'u2028': '\u2028',
+    'u2029': '\u2029'
+  };
+
+  for (var p in escapes) escapes[escapes[p]] = p;
+  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+  var unescaper = /\\(\\|'|r|n|t|u2028|u2029)/g;
+
   // Within an interpolation, evaluation, or escaping, remove HTML escaping
   // that had been previously added.
   var unescape = function(code) {
-    return code.replace(/\\(\\|'|r|n|t|u2028|u2029)/g, function(match, char) {
-      switch (char) {
-        case '\\': return '\\';
-        case "'": return "'";
-        case 'r': return '\r';
-        case 'n': return '\n';
-        case 't': return '\t';
-        case 'u2028': return '\u2028';
-        case 'u2029': return '\u2029';
-      }
+    return code.replace(unescaper, function(match, escape) {
+      return escapes[escape];
     });
   };
 
@@ -925,23 +933,20 @@
     var c  = _.templateSettings;
     var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
       'with(obj||{}){__p.push(\'' +
-      str.replace(/\\/g, '\\\\')
-         .replace(/'/g, "\\'")
-         .replace(/\r/g, '\\r')
-         .replace(/\n/g, '\\n')
-         .replace(/\t/g, '\\t')
-         .replace(/\u2028/g, '\\u2028')
-         .replace(/\u2029/g, '\\u2029')
-         .replace(c.escape || noMatch, function(match, code) {
-           return "',_.escape(" + unescape(code) + "),\n'";
-         })
-         .replace(c.interpolate || noMatch, function(match, code) {
-           return "'," + unescape(code) + ",\n'";
-         })
-         .replace(c.evaluate || noMatch, function(match, code) {
-           return "');" + unescape(code) + ";\n__p.push('";
-         })
-         + "');}return __p.join('');";
+      str
+        .replace(escaper, function(match) {
+          return '\\' + escapes[match];
+        })
+        .replace(c.escape || noMatch, function(match, code) {
+          return "',_.escape(" + unescape(code) + "),\n'";
+        })
+        .replace(c.interpolate || noMatch, function(match, code) {
+          return "'," + unescape(code) + ",\n'";
+        })
+        .replace(c.evaluate || noMatch, function(match, code) {
+          return "');" + unescape(code) + ";\n__p.push('";
+        })
+        + "');}return __p.join('');";
     var func = new Function('obj', '_', tmpl);
     if (data) return func(data, _);
     return function(data) {

From 666049ac5db5634ba8694e64684b31ab2d1f1549 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Sat, 17 Mar 2012 13:02:17 -0400
Subject: [PATCH 496/533] Add utility function `getValue`.

---
 index.html      | 195 ++++++++++++++++++++++++++----------------------
 test/utility.js |   9 +++
 underscore.js   |   6 ++
 3 files changed, 119 insertions(+), 91 deletions(-)

diff --git a/index.html b/index.html
index 9165f1428..c6818b7a7 100644
--- a/index.html
+++ b/index.html
@@ -3,7 +3,7 @@
 <head>
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
-  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />  
+  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
   <title>Underscore.js</title>
   <style>
     body {
@@ -11,7 +11,7 @@
       line-height: 22px;
       background: #f4f4f4 url(docs/images/background.png);
       color: #000;
-      font-family: Helvetica Neue, Helvetica, Arial;      
+      font-family: Helvetica Neue, Helvetica, Arial;
     }
     .interface {
       font-family: "Lucida Grande", "Lucida Sans Unicode", Helvetica, Arial, sans-serif !important;
@@ -58,7 +58,7 @@
         }
           .toc_section li a:hover {
             text-decoration: underline;
-          }  
+          }
     div.container {
       width: 550px;
       margin: 40px 0 50px 260px;
@@ -131,13 +131,13 @@
   </style>
 </head>
 <body>
-  
+
   <div id="sidebar" class="interface">
 
     <a class="toc_title" href="#">
       Underscore.js <span class="version">(1.3.1)</span>
     </a>
-    
+
     <a class="toc_title" href="#">
       Introduction
     </a>
@@ -237,7 +237,7 @@
 
     <a class="toc_title" href="#utility">
       Utility
-    </a>    
+    </a>
     <ul class="toc_section">
       <li>- <a href="#noConflict">noConflict</a></li>
       <li>- <a href="#identity">identity</a></li>
@@ -245,6 +245,7 @@
       <li>- <a href="#mixin">mixin</a></li>
       <li>- <a href="#uniqueId">uniqueId</a></li>
       <li>- <a href="#escape">escape</a></li>
+      <li>- <a href="#getValue">getValue</a></li>
       <li>- <a href="#template">template</a></li>
     </ul>
 
@@ -255,15 +256,15 @@
       <li>- <a href="#chain">chain</a></li>
       <li>- <a href="#value">value</a></li>
     </ul>
-    
+
     <a class="toc_title" href="#links">
       Links
     </a>
-    
+
     <a class="toc_title" href="#changelog">
       Change Log
     </a>
-    
+
   </div>
 
   <div class="container">
@@ -297,7 +298,7 @@
       A complete <a href="test/test.html">Test &amp; Benchmark Suite</a>
       is included for your perusal.
     </p>
-    
+
     <p>
       You may also read through the <a href="docs/underscore.html">annotated source code</a>.
     </p>
@@ -327,7 +328,7 @@
         <td><i>&lt; 4kb, Minified and Gzipped</i></td>
       </tr>
     </table>
-    
+
     <div class="warning">Upgrade warning: version 1.3.0 removes AMD (RequireJS) support.</div>
 
     <div id="documentation">
@@ -525,7 +526,7 @@ _.min(numbers);
       <p id="sortBy">
         <b class="header">sortBy</b><code>_.sortBy(list, iterator, [context])</code>
         <br />
-        Returns a sorted copy of <b>list</b>, ranked in ascending order by the 
+        Returns a sorted copy of <b>list</b>, ranked in ascending order by the
         results of running each value through <b>iterator</b>.
       </p>
       <pre>
@@ -565,7 +566,7 @@ _.sortedIndex([10, 20, 30, 40, 50], 35);
       <p id="shuffle">
         <b class="header">shuffle</b><code>_.shuffle(list)</code>
         <br />
-        Returns a shuffled copy of the <b>list</b>, using a version of the 
+        Returns a shuffled copy of the <b>list</b>, using a version of the
         <a href="http://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle">Fisher-Yates shuffle</a>.
       </p>
       <pre>
@@ -751,7 +752,7 @@ _.zip(['moe', 'larry', 'curly'], [30, 40, 50], [true, false, false]);
         <br />
         Returns the index at which <b>value</b> can be found in the <b>array</b>,
         or <i>-1</i> if value is not present in the <b>array</b>. Uses the native
-        <b>indexOf</b> function unless it's missing. If you're working with a 
+        <b>indexOf</b> function unless it's missing. If you're working with a
         large array, and you know that the array is already sorted, pass <tt>true</tt>
         for <b>isSorted</b> to use a faster binary search.
       </p>
@@ -836,7 +837,7 @@ jQuery('#underscore_button').bind('click', buttonView.onClick);
         <b class="header">memoize</b><code>_.memoize(function, [hashFunction])</code>
         <br />
         Memoizes a given <b>function</b> by caching the computed result. Useful
-        for speeding up slow-running computations. If passed an optional 
+        for speeding up slow-running computations. If passed an optional
         <b>hashFunction</b>, it will be used to compute the hash key for storing
         the result, based on the arguments to the original function. The default
         <b>hashFunction</b> just uses the first argument to the memoized function
@@ -877,8 +878,8 @@ _.defer(function(){ alert('deferred'); });
       <p id="throttle">
         <b class="header">throttle</b><code>_.throttle(function, wait)</code>
         <br />
-        Creates and returns a new, throttled version of the passed function, 
-        that, when invoked repeatedly, will only actually call the original function 
+        Creates and returns a new, throttled version of the passed function,
+        that, when invoked repeatedly, will only actually call the original function
         at most once per every <b>wait</b>
         milliseconds. Useful for rate-limiting events that occur faster than you
         can keep up with.
@@ -892,11 +893,11 @@ $(window).scroll(throttled);
         <b class="header">debounce</b><code>_.debounce(function, wait)</code>
         <br />
         Creates and returns a new debounced version of the passed function that
-        will postpone its execution until after 
-        <b>wait</b> milliseconds have elapsed since the last time it  
-        was invoked. Useful for implementing behavior that should only happen 
-        <i>after</i> the input has stopped arriving. For example: rendering a 
-        preview of a Markdown comment, recalculating a layout after the window 
+        will postpone its execution until after
+        <b>wait</b> milliseconds have elapsed since the last time it
+        was invoked. Useful for implementing behavior that should only happen
+        <i>after</i> the input has stopped arriving. For example: rendering a
+        preview of a Markdown comment, recalculating a layout after the window
         has stopped being resized, and so on.
       </p>
       <pre>
@@ -907,7 +908,7 @@ $(window).resize(lazyLayout);
       <p id="once">
         <b class="header">once</b><code>_.once(function)</code>
         <br />
-        Creates a version of the function that can only be called one time. 
+        Creates a version of the function that can only be called one time.
         Repeated calls to the modified function will have no effect, returning
         the value from the original call. Useful for initialization functions,
         instead of having to set a boolean flag and then check it later.
@@ -922,7 +923,7 @@ initialize();
       <p id="after">
         <b class="header">after</b><code>_.after(count, function)</code>
         <br />
-        Creates a version of the function that will only be run after first 
+        Creates a version of the function that will only be run after first
         being called <b>count</b> times. Useful for grouping asynchronous responses,
         where you want to be sure that all the async calls have finished, before
         proceeding.
@@ -930,7 +931,7 @@ initialize();
       <pre>
 var renderNotes = _.after(notes.length, render);
 _.each(notes, function(note) {
-  note.asyncSave({success: renderNotes}); 
+  note.asyncSave({success: renderNotes});
 });
 // renderNotes is run once, after all notes have saved.
 </pre>
@@ -1058,9 +1059,9 @@ _.chain([1,2,3,200])
       <p id="has">
         <b class="header">has</b><code>_.has(object, key)</code>
         <br />
-        Does the object contain the given key? Identical to 
+        Does the object contain the given key? Identical to
         <tt>object.hasOwnProperty(key)</tt>, but uses a safe reference to the
-        <tt>hasOwnProperty</tt> function, in case it's been 
+        <tt>hasOwnProperty</tt> function, in case it's been
         <a href="http://www.devthought.com/2012/01/18/an-object-is-not-a-hash/">overridden accidentally</a>.
       </p>
       <pre>
@@ -1238,7 +1239,7 @@ _.isNull(undefined);
 _.isUndefined(window.missingVariable);
 =&gt; true
 </pre>
-      
+
       <h2 id="utility">Utility Functions</h2>
 
       <p id="noConflict">
@@ -1275,7 +1276,7 @@ _(3).times(function(){ genie.grantWish(); });</pre>
         <b class="header">mixin</b><code>_.mixin(object)</code>
         <br />
         Allows you to extend Underscore with your own utility functions. Pass
-        a hash of <tt>{name: function}</tt> definitions to have your functions 
+        a hash of <tt>{name: function}</tt> definitions to have your functions
         added to the Underscore object, as well as the OOP wrapper.
       </p>
       <pre>
@@ -1302,13 +1303,25 @@ _.uniqueId('contact_');
       <p id="escape">
         <b class="header">escape</b><code>_.escape(string)</code>
         <br />
-        Escapes a string for insertion into HTML, replacing 
+        Escapes a string for insertion into HTML, replacing
         <tt>&amp;</tt>, <tt>&lt;</tt>, <tt>&gt;</tt>, <tt>&quot;</tt>, <tt>&#x27;</tt>, and <tt>&#x2F;</tt> characters.
       </p>
       <pre>
 _.escape('Curly, Larry &amp; Moe');
 =&gt; "Curly, Larry &amp;amp; Moe"</pre>
 
+      <p id="getValue">
+        <b class="header">getValue</b><code>_.getValue(object, property)</code>
+        <br />
+        Returns a value from an object as a property or as a function.
+      </p>
+      <pre>
+var object = {cheese: 'crumpets', stuff: function(){ return 'nonsense'; }};
+_.getValue(object, 'cheese');
+=&gt; "crumpets"
+_.getValue(object, 'stuff');
+=&gt; "nonsense"</pre>
+
       <p id="template">
         <b class="header">template</b><code>_.template(templateString, [context])</code>
         <br />
@@ -1340,7 +1353,7 @@ template({value : '&lt;script&gt;'});
         You can also use <tt>print</tt> from within JavaScript code.  This is
         sometimes more convenient than using <tt>&lt;%= ... %&gt;</tt>.
       </p>
-      
+
       <pre>
 var compiled = _.template("&lt;% print('Hello ' + epithet); %&gt;");
 compiled({epithet: "stooge"});
@@ -1349,8 +1362,8 @@ compiled({epithet: "stooge"});
       <p>
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.
-        Define an <b>interpolate</b> regex to match expressions that should be 
-        interpolated verbatim, an <b>escape</b> regex to match expressions that should 
+        Define an <b>interpolate</b> regex to match expressions that should be
+        interpolated verbatim, an <b>escape</b> regex to match expressions that should
         be inserted after being HTML escaped, and an <b>evaluate</b> regex to match
         expressions that should be evaluated without insertion into the resulting
         string. You may define or omit any combination of the three.
@@ -1451,7 +1464,7 @@ _([1, 2, 3]).value();
         The <a href="http://github.com/mirven/underscore.lua">source</a> is
         available on GitHub.
       </p>
-      
+
       <p>
         <a href="http://brianhaveri.github.com/Underscore.php/">Underscore.php</a>,
         a PHP port of the functions that are applicable in both languages.
@@ -1459,17 +1472,17 @@ _([1, 2, 3]).value();
         The <a href="http://github.com/brianhaveri/Underscore.php">source</a> is
         available on GitHub.
       </p>
-      
+
       <p>
         <a href="http://vti.github.com/underscore-perl/">Underscore-perl</a>,
-        a Perl port of many of the Underscore.js functions, 
-        aimed at on Perl hashes and arrays, also 
+        a Perl port of many of the Underscore.js functions,
+        aimed at on Perl hashes and arrays, also
         <a href="https://github.com/vti/underscore-perl/">available on GitHub</a>.
       </p>
-      
+
       <p>
         <a href="https://github.com/edtsech/underscore.string">Underscore.string</a>,
-        an Underscore extension that adds functions for string-manipulation: 
+        an Underscore extension that adds functions for string-manipulation:
         <tt>trim</tt>, <tt>startsWith</tt>, <tt>contains</tt>, <tt>capitalize</tt>,
         <tt>reverse</tt>, <tt>sprintf</tt>, and more.
       </p>
@@ -1488,7 +1501,7 @@ _([1, 2, 3]).value();
         <a href="http://osteele.com/sources/javascript/functional/">Functional JavaScript</a>,
         which includes comprehensive higher-order function support as well as string lambdas.
       </p>
-      
+
       <p>
         Michael Aufreiter's <a href="http://substance.io/#michael/data-js">Data.js</a>,
         a data manipulation + persistence library for JavaScript.
@@ -1499,7 +1512,7 @@ _([1, 2, 3]).value();
       </p>
 
       <h2 id="changelog">Change Log</h2>
-      
+
       <p>
         <b class="header">1.3.1</b> &mdash; <small><i>Jan. 23, 2012</i></small><br />
         <ul>
@@ -1510,7 +1523,7 @@ _([1, 2, 3]).value();
             Added <tt>_.collect</tt> as an alias for <tt>_.map</tt>. Smalltalkers, rejoice.
           </li>
           <li>
-            Reverted an old change so that <tt>_.extend</tt> will correctly copy 
+            Reverted an old change so that <tt>_.extend</tt> will correctly copy
             over keys with undefined values again.
           </li>
           <li>
@@ -1518,7 +1531,7 @@ _([1, 2, 3]).value();
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.3.0</b> &mdash; <small><i>Jan. 11, 2012</i></small><br />
         <ul>
@@ -1529,12 +1542,12 @@ _([1, 2, 3]).value();
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.2.4</b> &mdash; <small><i>Jan. 4, 2012</i></small><br />
         <ul>
           <li>
-            You now can (and probably should) write <tt>_.chain(list)</tt> 
+            You now can (and probably should) write <tt>_.chain(list)</tt>
             instead of <tt>_(list).chain()</tt>.
           </li>
           <li>
@@ -1551,7 +1564,7 @@ _([1, 2, 3]).value();
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.2.3</b> &mdash; <small><i>Dec. 7, 2011</i></small><br />
         <ul>
@@ -1564,12 +1577,12 @@ _([1, 2, 3]).value();
           </li>
           <li>
             Both <tt>_.reduce</tt> and <tt>_.reduceRight</tt> can now be passed an
-            explicitly <tt>undefined</tt> value. (There's no reason why you'd 
+            explicitly <tt>undefined</tt> value. (There's no reason why you'd
             want to do this.)
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.2.2</b> &mdash; <small><i>Nov. 14, 2011</i></small><br />
         <ul>
@@ -1588,22 +1601,22 @@ _([1, 2, 3]).value();
           </li>
           <li>
             <tt>_.after(callback, 0)</tt> will now trigger the callback immediately,
-            making "after" easier to use with asynchronous APIs <small>(#366)</small>. 
+            making "after" easier to use with asynchronous APIs <small>(#366)</small>.
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.2.1</b> &mdash; <small><i>Oct. 24, 2011</i></small><br />
         <ul>
           <li>
-            Several important bug fixes for <tt>_.isEqual</tt>, which should now 
-            do better on mutated Arrays, and on non-Array objects with 
+            Several important bug fixes for <tt>_.isEqual</tt>, which should now
+            do better on mutated Arrays, and on non-Array objects with
             <tt>length</tt> properties. <small>(#329)</small>
           </li>
           <li>
             <b>jrburke</b> contributed Underscore exporting for AMD module loaders,
-            and <b>tonylukasavage</b> for Appcelerator Titanium. 
+            and <b>tonylukasavage</b> for Appcelerator Titanium.
             <small>(#335, #338)</small>
           </li>
           <li>
@@ -1611,7 +1624,7 @@ _([1, 2, 3]).value();
             grouping values by a particular common property.
           </li>
           <li>
-            <tt>_.throttle</tt>'d functions now fire immediately upon invocation, 
+            <tt>_.throttle</tt>'d functions now fire immediately upon invocation,
             and are rate-limited thereafter <small>(#170, #266)</small>.
           </li>
           <li>
@@ -1619,7 +1632,7 @@ _([1, 2, 3]).value();
           </li>
           <li>
             The <tt>_.bind</tt> function now also works on constructors, a-la
-            ES5 ... but you would never want to use <tt>_.bind</tt> on a 
+            ES5 ... but you would never want to use <tt>_.bind</tt> on a
             constructor function.
           </li>
           <li>
@@ -1631,25 +1644,25 @@ _([1, 2, 3]).value();
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.2.0</b> &mdash; <small><i>Oct. 5, 2011</i></small><br />
         <ul>
           <li>
-            The <tt>_.isEqual</tt> function now 
+            The <tt>_.isEqual</tt> function now
             supports true deep equality comparisons, with checks for cyclic structures,
             thanks to Kit Cambridge.
           </li>
           <li>
-            Underscore templates now support HTML escaping interpolations, using 
-            <tt>&lt;%- ... %&gt;</tt> syntax. 
+            Underscore templates now support HTML escaping interpolations, using
+            <tt>&lt;%- ... %&gt;</tt> syntax.
           </li>
           <li>
-            Ryan Tenney contributed <tt>_.shuffle</tt>, which uses a modified 
-            Fisher-Yates to give you a shuffled copy of an array. 
+            Ryan Tenney contributed <tt>_.shuffle</tt>, which uses a modified
+            Fisher-Yates to give you a shuffled copy of an array.
           </li>
           <li>
-            <tt>_.uniq</tt> can now be passed an optional iterator, to determine by 
+            <tt>_.uniq</tt> can now be passed an optional iterator, to determine by
             what criteria an object should be considered unique.
           </li>
           <li>
@@ -1658,22 +1671,22 @@ _([1, 2, 3]).value();
           </li>
           <li>
             A new <tt>_.initial</tt> function was added, as a mirror of <tt>_.rest</tt>,
-            which returns all the initial values of a list (except the last N). 
+            which returns all the initial values of a list (except the last N).
           </li>
         </ul>
       </p>
-      
+
       <p>
         <b class="header">1.1.7</b> &mdash; <small><i>July 13, 2011</i></small><br />
         Added <tt>_.groupBy</tt>, which aggregates a collection into groups of like items.
-        Added <tt>_.union</tt> and <tt>_.difference</tt>, to complement the 
+        Added <tt>_.union</tt> and <tt>_.difference</tt>, to complement the
         (re-named) <tt>_.intersection</tt>.
         Various improvements for support of sparse arrays.
         <tt>_.toArray</tt> now returns a clone, if directly passed an array.
         <tt>_.functions</tt> now also returns the names of functions that are present
         in the prototype chain.
       </p>
-            
+
       <p>
         <b class="header">1.1.6</b> &mdash; <small><i>April 18, 2011</i></small><br />
         Added <tt>_.after</tt>, which will return a function that only runs after
@@ -1684,30 +1697,30 @@ _([1, 2, 3]).value();
         <tt>_.extend</tt> no longer copies keys when the value is undefined.
         <tt>_.bind</tt> now errors when trying to bind an undefined value.
       </p>
-      
+
       <p>
         <b class="header">1.1.5</b> &mdash; <small><i>Mar 20, 2011</i></small><br />
         Added an <tt>_.defaults</tt> function, for use merging together JS objects
         representing default options.
         Added an <tt>_.once</tt> function, for manufacturing functions that should
         only ever execute a single time.
-        <tt>_.bind</tt> now delegates to the native ECMAScript 5 version, 
+        <tt>_.bind</tt> now delegates to the native ECMAScript 5 version,
         where available.
         <tt>_.keys</tt> now throws an error when used on non-Object values, as in
         ECMAScript 5.
         Fixed a bug with <tt>_.keys</tt> when used over sparse arrays.
       </p>
-      
+
       <p>
         <b class="header">1.1.4</b> &mdash; <small><i>Jan 9, 2011</i></small><br />
-        Improved compliance with ES5's Array methods when passing <tt>null</tt> 
+        Improved compliance with ES5's Array methods when passing <tt>null</tt>
         as a value. <tt>_.wrap</tt> now correctly sets <tt>this</tt> for the
         wrapped function. <tt>_.indexOf</tt> now takes an optional flag for
         finding the insertion index in an array that is guaranteed to already
         be sorted. Avoiding the use of <tt>.callee</tt>, to allow <tt>_.isArray</tt>
         to work properly in ES5's strict mode.
       </p>
-      
+
       <p>
         <b class="header">1.1.3</b> &mdash; <small><i>Dec 1, 2010</i></small><br />
         In CommonJS, Underscore may now be required with just: <br />
@@ -1719,26 +1732,26 @@ _([1, 2, 3]).value();
         Improved the <b>isType</b> family of functions for better interoperability
         with Internet Explorer host objects.
         <tt>_.template</tt> now correctly escapes backslashes in templates.
-        Improved <tt>_.reduce</tt> compatibility with the ECMA5 version: 
+        Improved <tt>_.reduce</tt> compatibility with the ECMA5 version:
         if you don't pass an initial value, the first item in the collection is used.
         <tt>_.each</tt> no longer returns the iterated collection, for improved
         consistency with ES5's <tt>forEach</tt>.
       </p>
-      
+
       <p>
         <b class="header">1.1.2</b><br />
-        Fixed <tt>_.contains</tt>, which was mistakenly pointing at 
-        <tt>_.intersect</tt> instead of <tt>_.include</tt>, like it should 
+        Fixed <tt>_.contains</tt>, which was mistakenly pointing at
+        <tt>_.intersect</tt> instead of <tt>_.include</tt>, like it should
         have been. Added <tt>_.unique</tt> as an alias for <tt>_.uniq</tt>.
       </p>
-      
+
       <p>
         <b class="header">1.1.1</b><br />
         Improved the speed of <tt>_.template</tt>, and its handling of multiline
-        interpolations. Ryan Tenney contributed optimizations to many Underscore 
+        interpolations. Ryan Tenney contributed optimizations to many Underscore
         functions. An annotated version of the source code is now available.
       </p>
-      
+
       <p>
         <b class="header">1.1.0</b><br />
         The method signature of <tt>_.reduce</tt> has been changed to match
@@ -1747,33 +1760,33 @@ _([1, 2, 3]).value();
         called with no arguments, and preserves whitespace. <tt>_.contains</tt>
         is a new alias for <tt>_.include</tt>.
       </p>
-      
+
       <p>
         <b class="header">1.0.4</b><br />
-        <a href="http://themoell.com/">Andri Möll</a> contributed the <tt>_.memoize</tt> 
-        function, which can be used to speed up expensive repeated computations 
+        <a href="http://themoell.com/">Andri Möll</a> contributed the <tt>_.memoize</tt>
+        function, which can be used to speed up expensive repeated computations
         by caching the results.
       </p>
-      
+
       <p>
         <b class="header">1.0.3</b><br />
         Patch that makes <tt>_.isEqual</tt> return <tt>false</tt> if any property
         of the compared object has a <tt>NaN</tt> value. Technically the correct
         thing to do, but of questionable semantics. Watch out for NaN comparisons.
       </p>
-      
+
       <p>
         <b class="header">1.0.2</b><br />
         Fixes <tt>_.isArguments</tt> in recent versions of Opera, which have
         arguments objects as real Arrays.
       </p>
-      
+
       <p>
         <b class="header">1.0.1</b><br />
-        Bugfix for <tt>_.isEqual</tt>, when comparing two objects with the same 
+        Bugfix for <tt>_.isEqual</tt>, when comparing two objects with the same
         number of undefined keys, but with different names.
       </p>
-      
+
       <p>
         <b class="header">1.0.0</b><br />
         Things have been stable for many months now, so Underscore is now
@@ -1781,15 +1794,15 @@ _([1, 2, 3]).value();
         include <tt>_.isBoolean</tt>, and the ability to have <tt>_.extend</tt>
         take multiple source objects.
       </p>
-      
+
       <p>
         <b class="header">0.6.0</b><br />
-        Major release. Incorporates a number of 
+        Major release. Incorporates a number of
         <a href="http://github.com/ratbeard">Mile Frawley's</a> refactors for
         safer duck-typing on collection functions, and cleaner internals. A new
         <tt>_.mixin</tt> method that allows you to extend Underscore with utility
-        functions of your own. Added <tt>_.times</tt>, which works the same as in 
-        Ruby or Prototype.js. Native support for ECMAScript 5's <tt>Array.isArray</tt>, 
+        functions of your own. Added <tt>_.times</tt>, which works the same as in
+        Ruby or Prototype.js. Native support for ECMAScript 5's <tt>Array.isArray</tt>,
         and <tt>Object.keys</tt>.
       </p>
 
@@ -1847,7 +1860,7 @@ _([1, 2, 3]).value();
         <b class="header">0.5.1</b><br />
         Added an <tt>_.isArguments</tt> function. Lots of little safety checks
         and optimizations contributed by
-        <a href="http://github.com/iamnoah/">Noah Sloan</a> and 
+        <a href="http://github.com/iamnoah/">Noah Sloan</a> and
         <a href="http://themoell.com/">Andri Möll</a>.
       </p>
 
diff --git a/test/utility.js b/test/utility.js
index c285751ea..5f2485478 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -165,4 +165,13 @@ $(document).ready(function() {
     strictEqual(tmpl(), '<p>\u2028\u2028\u2029\u2029</p>');
   });
 
+  test('getValue calls functions and returns primitives', function() {
+    var obj = {w: '', x: 'x', y: function(){ return 'y'; }};
+    strictEqual(_.getValue(obj, 'w'), '');
+    strictEqual(_.getValue(obj, 'x'), 'x');
+    strictEqual(_.getValue(obj, 'y'), 'y');
+    strictEqual(_.getValue(obj, 'z'), undefined);
+    strictEqual(_.getValue(null, 'x'), null);
+  });
+
 });
diff --git a/underscore.js b/underscore.js
index b956e21ce..720801588 100644
--- a/underscore.js
+++ b/underscore.js
@@ -873,6 +873,12 @@
     return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
   };
 
+  // Get a value from an object as a property or as a function.
+  _.getValue = function(object, prop) {
+    if (object == null) return null;
+    return _.isFunction(object[prop]) ? object[prop]() : object[prop];
+  };
+
   // Add your own custom functions to the Underscore object, ensuring that
   // they're correctly added to the OOP wrapper as well.
   _.mixin = function(obj) {

From d0e7b397c1427bf69f2c03d45c5ce31dc60f8612 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 19 Mar 2012 14:24:59 -0400
Subject: [PATCH 497/533] Cache property value.

---
 underscore.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 720801588..24dcc72be 100644
--- a/underscore.js
+++ b/underscore.js
@@ -876,7 +876,8 @@
   // Get a value from an object as a property or as a function.
   _.getValue = function(object, prop) {
     if (object == null) return null;
-    return _.isFunction(object[prop]) ? object[prop]() : object[prop];
+    var value = object[prop];
+    return _.isFunction(value) ? value() : value;
   };
 
   // Add your own custom functions to the Underscore object, ensuring that

From 5c7ccb21ef5404dbbf4d925d03f35e49967e9a3a Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 19 Mar 2012 14:33:38 -0400
Subject: [PATCH 498/533] Rename `getValue` to `result`.

---
 index.html      | 10 +++++-----
 test/utility.js | 12 ++++++------
 underscore.js   |  2 +-
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/index.html b/index.html
index c6818b7a7..f2a00cae3 100644
--- a/index.html
+++ b/index.html
@@ -245,7 +245,7 @@
       <li>- <a href="#mixin">mixin</a></li>
       <li>- <a href="#uniqueId">uniqueId</a></li>
       <li>- <a href="#escape">escape</a></li>
-      <li>- <a href="#getValue">getValue</a></li>
+      <li>- <a href="#result">result</a></li>
       <li>- <a href="#template">template</a></li>
     </ul>
 
@@ -1310,16 +1310,16 @@ _.uniqueId('contact_');
 _.escape('Curly, Larry &amp; Moe');
 =&gt; "Curly, Larry &amp;amp; Moe"</pre>
 
-      <p id="getValue">
-        <b class="header">getValue</b><code>_.getValue(object, property)</code>
+      <p id="result">
+        <b class="header">result</b><code>_.result(object, property)</code>
         <br />
         Returns a value from an object as a property or as a function.
       </p>
       <pre>
 var object = {cheese: 'crumpets', stuff: function(){ return 'nonsense'; }};
-_.getValue(object, 'cheese');
+_.result(object, 'cheese');
 =&gt; "crumpets"
-_.getValue(object, 'stuff');
+_.result(object, 'stuff');
 =&gt; "nonsense"</pre>
 
       <p id="template">
diff --git a/test/utility.js b/test/utility.js
index 5f2485478..ec9960eae 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -165,13 +165,13 @@ $(document).ready(function() {
     strictEqual(tmpl(), '<p>\u2028\u2028\u2029\u2029</p>');
   });
 
-  test('getValue calls functions and returns primitives', function() {
+  test('result calls functions and returns primitives', function() {
     var obj = {w: '', x: 'x', y: function(){ return 'y'; }};
-    strictEqual(_.getValue(obj, 'w'), '');
-    strictEqual(_.getValue(obj, 'x'), 'x');
-    strictEqual(_.getValue(obj, 'y'), 'y');
-    strictEqual(_.getValue(obj, 'z'), undefined);
-    strictEqual(_.getValue(null, 'x'), null);
+    strictEqual(_.result(obj, 'w'), '');
+    strictEqual(_.result(obj, 'x'), 'x');
+    strictEqual(_.result(obj, 'y'), 'y');
+    strictEqual(_.result(obj, 'z'), undefined);
+    strictEqual(_.result(null, 'x'), null);
   });
 
 });
diff --git a/underscore.js b/underscore.js
index 24dcc72be..c00438cc5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -874,7 +874,7 @@
   };
 
   // Get a value from an object as a property or as a function.
-  _.getValue = function(object, prop) {
+  _.result = function(object, prop) {
     if (object == null) return null;
     var value = object[prop];
     return _.isFunction(value) ? value() : value;

From 5545a3b68da905b7cc956c1070f45cf9127ec045 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 19 Mar 2012 14:43:20 -0400
Subject: [PATCH 499/533] Dispense with abbreviation.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index c00438cc5..eff693d3a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -874,9 +874,9 @@
   };
 
   // Get a value from an object as a property or as a function.
-  _.result = function(object, prop) {
+  _.result = function(object, property) {
     if (object == null) return null;
-    var value = object[prop];
+    var value = object[property];
     return _.isFunction(value) ? value() : value;
   };
 

From 9a27b1b083f8651e95f3622bfe5a338f36f7511a Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 19 Mar 2012 15:07:33 -0400
Subject: [PATCH 500/533] Clarify documentation for _.result.

---
 index.html    | 3 ++-
 underscore.js | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index f2a00cae3..7ebdc3f6e 100644
--- a/index.html
+++ b/index.html
@@ -1313,7 +1313,8 @@ _.escape('Curly, Larry &amp; Moe');
       <p id="result">
         <b class="header">result</b><code>_.result(object, property)</code>
         <br />
-        Returns a value from an object as a property or as a function.
+        If the value of the named property is a function then invoke it.
+        Otherwise, return its value.
       </p>
       <pre>
 var object = {cheese: 'crumpets', stuff: function(){ return 'nonsense'; }};
diff --git a/underscore.js b/underscore.js
index 6c9512594..429a9b142 100644
--- a/underscore.js
+++ b/underscore.js
@@ -873,7 +873,8 @@
     return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
   };
 
-  // Get a value from an object as a property or as a function.
+  // If the value of the named property is a function then invoke it.
+  // Otherwise, return its value.
   _.result = function(object, property) {
     if (object == null) return null;
     var value = object[property];

From 33be5c62b8fe39b185024ea7d4e8b0e196f29d6b Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 19 Mar 2012 15:45:44 -0400
Subject: [PATCH 501/533] Make a small documentation change.

---
 index.html    | 3 +--
 underscore.js | 4 ++--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/index.html b/index.html
index 7ebdc3f6e..9b163c16b 100644
--- a/index.html
+++ b/index.html
@@ -1313,8 +1313,7 @@ _.escape('Curly, Larry &amp; Moe');
       <p id="result">
         <b class="header">result</b><code>_.result(object, property)</code>
         <br />
-        If the value of the named property is a function then invoke it.
-        Otherwise, return its value.
+        If the value of the named property is a function then invoke it; otherwise, return it.
       </p>
       <pre>
 var object = {cheese: 'crumpets', stuff: function(){ return 'nonsense'; }};
diff --git a/underscore.js b/underscore.js
index 429a9b142..21a45c0d9 100644
--- a/underscore.js
+++ b/underscore.js
@@ -873,8 +873,8 @@
     return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
   };
 
-  // If the value of the named property is a function then invoke it.
-  // Otherwise, return its value.
+  // If the value of the named property is a function then invoke it;
+  // otherwise, return it.
   _.result = function(object, property) {
     if (object == null) return null;
     var value = object[property];

From 2d3edb88f0bfda175082a2f55cf3cda980e5e489 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Mon, 19 Mar 2012 19:08:36 -0500
Subject: [PATCH 502/533] _.size ludicrous speed improvement

---
 underscore.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 21a45c0d9..ba2ee7600 100644
--- a/underscore.js
+++ b/underscore.js
@@ -309,7 +309,11 @@
 
   // Return the number of elements in an object.
   _.size = function(obj) {
-    return _.toArray(obj).length;
+      if (_.isArray(obj)) {
+	  return obj.length;
+      } else {
+	  return _.keys(obj).length;
+      }
   };
 
   // Array Functions

From 5827e4a40a5a30f7a00b2bd1ab01111510e8a2d4 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Mon, 19 Mar 2012 19:10:59 -0500
Subject: [PATCH 503/533] _.size ludicrous speed improvement - formatting

---
 underscore.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/underscore.js b/underscore.js
index ba2ee7600..6f3ac8f47 100644
--- a/underscore.js
+++ b/underscore.js
@@ -309,11 +309,11 @@
 
   // Return the number of elements in an object.
   _.size = function(obj) {
-      if (_.isArray(obj)) {
-	  return obj.length;
-      } else {
-	  return _.keys(obj).length;
-      }
+    if (_.isArray(obj)) {
+      return obj.length;
+    }else{
+      return _.keys(obj).length;
+    }
   };
 
   // Array Functions

From 4c2a85f9c5f38ce466e9b827c2f7e3024196b579 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Tue, 20 Mar 2012 09:31:50 -0500
Subject: [PATCH 504/533] size enhancement as ternary and _.size(arr) test case

---
 test/collections.js | 1 +
 underscore.js       | 6 +-----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 71ef5a71c..18b242769 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -275,6 +275,7 @@ $(document).ready(function() {
 
   test('collections: size', function() {
     equal(_.size({one : 1, two : 2, three : 3}), 3, 'can compute the size of an object');
+    equal(_.size([1, 2, 3]), 3, 'can compute the size of an array');
   });
 
 });
diff --git a/underscore.js b/underscore.js
index 6f3ac8f47..c699c991b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -309,11 +309,7 @@
 
   // Return the number of elements in an object.
   _.size = function(obj) {
-    if (_.isArray(obj)) {
-      return obj.length;
-    }else{
-      return _.keys(obj).length;
-    }
+    return _.isArray(obj) ? obj.length : _.keys(obj).length;
   };
 
   // Array Functions

From ebb9db4e8e62a8760d8d24cbda6b7c66dc211d0e Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Wed, 21 Mar 2012 06:33:37 -0400
Subject: [PATCH 505/533] _.result calls `property` with the correct context.

---
 test/utility.js | 4 ++--
 underscore.js   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index ec9960eae..da374b59d 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -166,10 +166,10 @@ $(document).ready(function() {
   });
 
   test('result calls functions and returns primitives', function() {
-    var obj = {w: '', x: 'x', y: function(){ return 'y'; }};
+    var obj = {w: '', x: 'x', y: function(){ return this.x; }};
     strictEqual(_.result(obj, 'w'), '');
     strictEqual(_.result(obj, 'x'), 'x');
-    strictEqual(_.result(obj, 'y'), 'y');
+    strictEqual(_.result(obj, 'y'), 'x');
     strictEqual(_.result(obj, 'z'), undefined);
     strictEqual(_.result(null, 'x'), null);
   });
diff --git a/underscore.js b/underscore.js
index c699c991b..aeaa8b1b0 100644
--- a/underscore.js
+++ b/underscore.js
@@ -878,7 +878,7 @@
   _.result = function(object, property) {
     if (object == null) return null;
     var value = object[property];
-    return _.isFunction(value) ? value() : value;
+    return _.isFunction(value) ? value.call(object) : value;
   };
 
   // Add your own custom functions to the Underscore object, ensuring that

From 85672298d9f90f7aea038aa3d439227412e3ac53 Mon Sep 17 00:00:00 2001
From: Mark Rushakoff <mark.rushakoff@gmail.com>
Date: Thu, 22 Mar 2012 19:21:23 -0700
Subject: [PATCH 506/533] Prefer equal(x, y) over ok(x == y)

---
 test/functions.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index ff95f4368..086233960 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -101,8 +101,8 @@ $(document).ready(function() {
     setTimeout(throttledIncr, 190);
     setTimeout(throttledIncr, 220);
     setTimeout(throttledIncr, 240);
-    _.delay(function(){ ok(counter == 1, "incr was called immediately"); }, 30);
-    _.delay(function(){ ok(counter == 4, "incr was throttled"); start(); }, 400);
+    _.delay(function(){ equal(counter, 1, "incr was called immediately"); }, 30);
+    _.delay(function(){ equal(counter, 4, "incr was throttled"); start(); }, 400);
   });
 
   asyncTest("functions: throttle arguments", 2, function() {
@@ -122,7 +122,7 @@ $(document).ready(function() {
     var incr = function(){ counter++; };
     var throttledIncr = _.throttle(incr, 100);
     throttledIncr();
-    _.delay(function(){ ok(counter == 1, "incr was called once"); start(); }, 220);
+    _.delay(function(){ equal(counter, 1, "incr was called once"); start(); }, 220);
   });
 
   asyncTest("functions: throttle twice", 1, function() {
@@ -130,7 +130,7 @@ $(document).ready(function() {
     var incr = function(){ counter++; };
     var throttledIncr = _.throttle(incr, 100);
     throttledIncr(); throttledIncr();
-    _.delay(function(){ ok(counter == 2, "incr was called twice"); start(); }, 220);
+    _.delay(function(){ equal(counter, 2, "incr was called twice"); start(); }, 220);
   });
 
   asyncTest("functions: debounce", 1, function() {
@@ -143,7 +143,7 @@ $(document).ready(function() {
     setTimeout(debouncedIncr, 90);
     setTimeout(debouncedIncr, 120);
     setTimeout(debouncedIncr, 150);
-    _.delay(function(){ ok(counter == 1, "incr was debounced"); start(); }, 220);
+    _.delay(function(){ equal(counter, 1, "incr was debounced"); start(); }, 220);
   });
 
   asyncTest("functions: debounce asap", 2, function() {

From 2055d745db5ee91e99476e837754d9bc052c3ab7 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Fri, 23 Mar 2012 12:52:50 -0400
Subject: [PATCH 507/533] Attach template source to returned function.

---
 underscore.js | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/underscore.js b/underscore.js
index aeaa8b1b0..1649df208 100644
--- a/underscore.js
+++ b/underscore.js
@@ -938,28 +938,30 @@
   // Underscore templating handles arbitrary delimiters, preserves whitespace,
   // and correctly escapes quotes within interpolated code.
   _.template = function(str, data) {
-    var c  = _.templateSettings;
-    var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
+    var settings  = _.templateSettings;
+    var source = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
       'with(obj||{}){__p.push(\'' +
       str
         .replace(escaper, function(match) {
           return '\\' + escapes[match];
         })
-        .replace(c.escape || noMatch, function(match, code) {
-          return "',_.escape(" + unescape(code) + "),\n'";
+        .replace(settings.escape || noMatch, function(match, code) {
+          return "',\n_.escape(" + unescape(code) + "),\n'";
         })
-        .replace(c.interpolate || noMatch, function(match, code) {
-          return "'," + unescape(code) + ",\n'";
+        .replace(settings.interpolate || noMatch, function(match, code) {
+          return "',\n" + unescape(code) + ",\n'";
         })
-        .replace(c.evaluate || noMatch, function(match, code) {
-          return "');" + unescape(code) + ";\n__p.push('";
+        .replace(settings.evaluate || noMatch, function(match, code) {
+          return "');\n" + unescape(code) + "\n;__p.push('";
         })
-        + "');}return __p.join('');";
-    var func = new Function('obj', '_', tmpl);
-    if (data) return func(data, _);
-    return function(data) {
-      return func.call(this, data, _);
+        + "');\n}\nreturn __p.join('');";
+    var render = new Function('obj', '_', source);
+    if (data) return render(data, _);
+    var template = function(data) {
+      return render.call(this, data, _);
     };
+    template.source = 'function(obj, _){\n' + source + '\n}';
+    return template;
   };
 
   // Add a "chain" function, which will delegate to the wrapper.

From 705eff4826660d11ec2af4fa7aafd4bed92e66a1 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Sun, 25 Mar 2012 10:43:30 -0500
Subject: [PATCH 508/533] add _.isFinite - verifies is a number between Inf &&
 -Inf

---
 underscore.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/underscore.js b/underscore.js
index aeaa8b1b0..98ffea186 100644
--- a/underscore.js
+++ b/underscore.js
@@ -812,6 +812,11 @@
     return toString.call(obj) == '[object Number]';
   };
 
+  // Is a givin number finite?
+  _.isFinite = function(obj) {
+    return obj > -1/0 && obj < 1/0 && obj === -obj;
+  };
+
   // Is the given value `NaN`?
   _.isNaN = function(obj) {
     // `NaN` is the only value for which `===` is not reflexive.

From e27423586528b0947407b36dba6916cc33c61e9b Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Sun, 25 Mar 2012 11:08:23 -0500
Subject: [PATCH 509/533] _.isFinite fix and tests

---
 test/objects.js | 11 +++++++++++
 underscore.js   |  2 +-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 1745d8a3f..072cfb537 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -481,6 +481,17 @@ $(document).ready(function() {
     ok(_.isRegExp(iRegExp), 'even from another frame');
   });
 
+  test("objects: isFinite", function() {
+    ok(!_.isFinite(undefined), 'undefined is not Finite');
+    ok(!_.isFinite(null), 'null is not Finite');
+    ok(!_.isFinite(Infinity), 'Infinity is not Finite');
+    ok(!_.isFinite(-Infinity), '-Infinity is not Finite');
+    ok(!_.isFinite('12'), 'Strings are not numbers');
+    ok(_.isFinite(0), '0 is Finite');
+    ok(_.isFinite(123), 'Ints are Finite');
+    ok(_.isFinite(-12.44), 'Floats are Finite');
+      });
+
   test("objects: isNaN", function() {
     ok(!_.isNaN(undefined), 'undefined is not NaN');
     ok(!_.isNaN(null), 'null is not NaN');
diff --git a/underscore.js b/underscore.js
index 98ffea186..5060147e3 100644
--- a/underscore.js
+++ b/underscore.js
@@ -814,7 +814,7 @@
 
   // Is a givin number finite?
   _.isFinite = function(obj) {
-    return obj > -1/0 && obj < 1/0 && obj === -obj;
+    return obj > -1/0 && obj < 1/0 && obj === +obj;
   };
 
   // Is the given value `NaN`?

From 55b68fdabaa28688ac037530b842dcf4ccf19d2e Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Sun, 25 Mar 2012 11:20:57 -0500
Subject: [PATCH 510/533] formatting

---
 test/objects.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/objects.js b/test/objects.js
index 072cfb537..a5e3c7c62 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -490,7 +490,7 @@ $(document).ready(function() {
     ok(_.isFinite(0), '0 is Finite');
     ok(_.isFinite(123), 'Ints are Finite');
     ok(_.isFinite(-12.44), 'Floats are Finite');
-      });
+  });
 
   test("objects: isNaN", function() {
     ok(!_.isNaN(undefined), 'undefined is not NaN');

From bf6cb03519b1237c5d48039299bc3a6aa0134435 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Sun, 25 Mar 2012 14:10:35 -0500
Subject: [PATCH 511/533] test against NaN

---
 test/objects.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/objects.js b/test/objects.js
index a5e3c7c62..630e2de30 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -484,6 +484,7 @@ $(document).ready(function() {
   test("objects: isFinite", function() {
     ok(!_.isFinite(undefined), 'undefined is not Finite');
     ok(!_.isFinite(null), 'null is not Finite');
+    ok(!_.isFinite(NaN), 'NaN is not Finite');
     ok(!_.isFinite(Infinity), 'Infinity is not Finite');
     ok(!_.isFinite(-Infinity), '-Infinity is not Finite');
     ok(!_.isFinite('12'), 'Strings are not numbers');

From 2c0ccf03ef1b5d0d54b267341f57fd7f8161b75c Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Mon, 26 Mar 2012 13:37:06 -0400
Subject: [PATCH 512/533] Documentation for `_.template(...).source`.

---
 index.html    | 14 +++++++++++++-
 underscore.js |  2 +-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 9b163c16b..99453e2ce 100644
--- a/index.html
+++ b/index.html
@@ -1327,7 +1327,7 @@ _.result(object, 'stuff');
         <br />
         Compiles JavaScript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
-        data sources. Template functions can both interpolate variables, using<br />
+        data sources. Template functions can both interpolate variables, using
         <tt>&lt;%= &hellip; %&gt;</tt>, as well as execute arbitrary JavaScript code, with
         <tt>&lt;% &hellip; %&gt;</tt>. If you wish to interpolate a value, and have
         it be HTML-escaped, use <tt>&lt;%- &hellip; %&gt;</tt> When you evaluate a template function, pass in a
@@ -1381,6 +1381,18 @@ var template = _.template("Hello {{ name }}!");
 template({name : "Mustache"});
 =&gt; "Hello Mustache!"</pre>
 
+      <p>
+        Precompiling your templates can be a big help when debugging errors you can't
+        reproduce.  This is because precompiled templates can provide line numbers and
+        a stack trace, something that is not possible when compiling templates on the client.
+        <b>template</b> provides the <b>source</b> property on the compiled template
+        function for easy precompilation.
+      </p>
+
+      <pre>&lt;script&gt;
+  JST.project = <%= _.template(jstText).source %>;
+&lt;/script&gt;</pre>
+
 
       <h2 id="chaining">Chaining</h2>
 
diff --git a/underscore.js b/underscore.js
index 1649df208..44226a07c 100644
--- a/underscore.js
+++ b/underscore.js
@@ -960,7 +960,7 @@
     var template = function(data) {
       return render.call(this, data, _);
     };
-    template.source = 'function(obj, _){\n' + source + '\n}';
+    template.source = 'function(obj){\n' + source + '\n}';
     return template;
   };
 

From 4266d9180578f027a48655d8966fc771db6192e1 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Mon, 26 Mar 2012 13:00:25 -0500
Subject: [PATCH 513/533] test _.isFinite against new Number

---
 test/objects.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/objects.js b/test/objects.js
index 630e2de30..62a74e731 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -488,6 +488,8 @@ $(document).ready(function() {
     ok(!_.isFinite(Infinity), 'Infinity is not Finite');
     ok(!_.isFinite(-Infinity), '-Infinity is not Finite');
     ok(!_.isFinite('12'), 'Strings are not numbers');
+    var obj = new Number(5);
+    ok(_.isFinite(obj), 'Number instances can be finite');
     ok(_.isFinite(0), '0 is Finite');
     ok(_.isFinite(123), 'Ints are Finite');
     ok(_.isFinite(-12.44), 'Floats are Finite');

From ee86820473b355af0a7fede78d7d948083a4ea46 Mon Sep 17 00:00:00 2001
From: Raymond May Jr <raymondmay@gmail.com>
Date: Mon, 26 Mar 2012 13:02:40 -0500
Subject: [PATCH 514/533] use _.isNumber for correctly working check

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 5060147e3..eb279ae52 100644
--- a/underscore.js
+++ b/underscore.js
@@ -814,7 +814,7 @@
 
   // Is a givin number finite?
   _.isFinite = function(obj) {
-    return obj > -1/0 && obj < 1/0 && obj === +obj;
+    return _.isNumber(obj) && isFinite(obj);
   };
 
   // Is the given value `NaN`?

From 7c9523784555f10d65f894a66e03f71b71ce96a0 Mon Sep 17 00:00:00 2001
From: Chris Leishman <chris@leishman.org>
Date: Sat, 24 Mar 2012 12:26:03 -0700
Subject: [PATCH 515/533] Add _.restrict(source, *keys)

Return a clone of the source with only the properties named in *keys
(either stings or arrays containing strings).

Especially useful for avoiding mass-assignment vulnerabilities.
---
 index.html      | 13 +++++++++++++
 test/objects.js | 10 ++++++++++
 underscore.js   | 10 ++++++++++
 3 files changed, 33 insertions(+)

diff --git a/index.html b/index.html
index 99453e2ce..9b679b578 100644
--- a/index.html
+++ b/index.html
@@ -1014,6 +1014,19 @@ _.functions(_);
       <pre>
 _.extend({name : 'moe'}, {age : 50});
 =&gt; {name : 'moe', age : 50}
+</pre>
+
+      <p id="restrict">
+        <b class="header">restrict</b><code>_.restrict(source, *keys)</code>
+        <br />
+        Return a clone of the <b>source</b> with only the properties with the
+        property names, or arrays of property names, provided in <b>keys</b>.
+      </p>
+      <pre>
+_.restrict({name : 'moe', age: 50, userid : 'moe1'}, 'name', 'age');
+=&gt; {name : 'moe', age : 50}
+_.restrict({name : 'moe', age: 50, userid : 'moe1'}, ['name', 'age']);
+=&gt; {name : 'moe', age : 50}
 </pre>
 
       <p id="defaults">
diff --git a/test/objects.js b/test/objects.js
index 1745d8a3f..422e75754 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -41,6 +41,16 @@ $(document).ready(function() {
     equal(_.keys(result).join(''), 'ab', 'extend does not copy undefined values');
   });
 
+  test("objects: restrict", function() {
+    var result;
+    result = _.restrict({a:1, b:2, c:3}, 'a', 'c');
+    ok(_.isEqual(result, {a:1, c:3}), 'can restrict properties to those named');
+    result = _.restrict({a:1, b:2, c:3}, ['b', 'c']);
+    ok(_.isEqual(result, {b:2, c:3}), 'can restrict properties to those named in an array');
+    result = _.restrict({a:1, b:2, c:3}, ['a'], 'b');
+    ok(_.isEqual(result, {a:1, b:2}), 'can restrict properties to those named in mixed args');
+  });
+
   test("objects: defaults", function() {
     var result;
     var options = {zero: 0, one: 1, empty: "", nan: NaN, string: "string"};
diff --git a/underscore.js b/underscore.js
index 44226a07c..17549c5e8 100644
--- a/underscore.js
+++ b/underscore.js
@@ -645,6 +645,16 @@
     return obj;
   };
 
+  // Restrict a given object to the properties named
+  _.restrict = function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var dest = {};
+    each(_.flatten(slice.call(arguments, 1)), function(prop) {
+      if (prop in obj) dest[prop] = obj[prop];
+    });
+    return dest;
+  };
+
   // Fill in a given object with default properties.
   _.defaults = function(obj) {
     each(slice.call(arguments, 1), function(source) {

From 6b8a99ba395c6b53fdec24c8d134861b47a09d65 Mon Sep 17 00:00:00 2001
From: "Yi, EungJun" <semtlenori@gmail.com>
Date: Sat, 31 Mar 2012 02:27:49 +0900
Subject: [PATCH 516/533] Adding the ability to _.sortBy(list, 'property')

---
 test/collections.js | 4 ++++
 underscore.js       | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/collections.js b/test/collections.js
index 18b242769..68e90246f 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -235,6 +235,10 @@ $(document).ready(function() {
     var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}];
     people = _.sortBy(people, function(person){ return person.age; });
     equal(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
+
+    var list = ["one", "two", "three", "four", "five"];
+    var sorted = _.sortBy(list, 'length');
+    equal(sorted.join(' '), 'one two four five three', 'sorted by length');
   });
 
   test('collections: groupBy', function() {
diff --git a/underscore.js b/underscore.js
index 44226a07c..203b6d147 100644
--- a/underscore.js
+++ b/underscore.js
@@ -262,7 +262,8 @@
   };
 
   // Sort the object's values by a criterion produced by an iterator.
-  _.sortBy = function(obj, iterator, context) {
+  _.sortBy = function(obj, val, context) {
+    var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
     return _.pluck(_.map(obj, function(value, index, list) {
       return {
         value : value,

From e4c4300a064b9bf21bfcf112088fe9cd0f46a049 Mon Sep 17 00:00:00 2001
From: Chris Baynes <binaryexp+github@gmail.com>
Date: Sat, 31 Mar 2012 11:05:47 +0200
Subject: [PATCH 517/533] Allow sortBy to handle undefined values.

---
 underscore.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/underscore.js b/underscore.js
index 44226a07c..00ca13d4a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -270,6 +270,8 @@
       };
     }).sort(function(left, right) {
       var a = left.criteria, b = right.criteria;
+      if (_.isUndefined(a)) return 1;
+      if (_.isUndefined(b)) return -1;
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };

From db7d198a55c2af27785ee0b80d1ea5b84581b11f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 13:05:52 -0400
Subject: [PATCH 518/533] Fixes #538 -- confusing wording around chaining.

---
 index.html | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index 9165f1428..e8d310c76 100644
--- a/index.html
+++ b/index.html
@@ -1382,8 +1382,7 @@ _.map([1, 2, 3], function(n){ return n * 2; });
 _([1, 2, 3]).map(function(n){ return n * 2; });</pre>
 
       <p>
-        Using the object-oriented style allows you to chain together methods. Calling
-        <tt>chain</tt> on a wrapped object will cause all future method calls to
+        Calling <tt>chain</tt> on a wrapped object will cause all future method calls to
         return wrapped objects as well. When you've finished the computation,
         use <tt>value</tt> to retrieve the final value. Here's an example of chaining
         together a <b>map/flatten/reduce</b>, in order to get the word count of
@@ -1534,7 +1533,8 @@ _([1, 2, 3]).value();
         <b class="header">1.2.4</b> &mdash; <small><i>Jan. 4, 2012</i></small><br />
         <ul>
           <li>
-            You now can (and probably should) write <tt>_.chain(list)</tt> 
+            You now can (and probably should, as it's simpler) 
+            write <tt>_.chain(list)</tt> 
             instead of <tt>_(list).chain()</tt>.
           </li>
           <li>

From d60489501843515e714a21153a579471e370bbfb Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 13:16:58 -0400
Subject: [PATCH 519/533] revisions to #534, sortBy(undefined)

---
 test/collections.js | 3 +++
 underscore.js       | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/test/collections.js b/test/collections.js
index 18b242769..fb457f605 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -235,6 +235,9 @@ $(document).ready(function() {
     var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}];
     people = _.sortBy(people, function(person){ return person.age; });
     equal(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
+
+    var list = [undefined, 4, 1, undefined, 3, 2];
+    equal(_.sortBy(list, _.identity).join(','), '1,2,3,4,,', 'sortBy with undefined values');
   });
 
   test('collections: groupBy', function() {
diff --git a/underscore.js b/underscore.js
index 00ca13d4a..e3db3646d 100644
--- a/underscore.js
+++ b/underscore.js
@@ -270,8 +270,8 @@
       };
     }).sort(function(left, right) {
       var a = left.criteria, b = right.criteria;
-      if (_.isUndefined(a)) return 1;
-      if (_.isUndefined(b)) return -1;
+      if (a === void 0) return 1;
+      if (b === void 0) return -1;
       return a < b ? -1 : a > b ? 1 : 0;
     }), 'value');
   };

From 719cd24aa9c40990294d607ce2f5bad65b7aac7c Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 15:01:26 -0400
Subject: [PATCH 520/533] adding an initial implementation of a 'pick'
 function. #523

---
 index.html      | 13 ++++++-------
 test/objects.js | 12 ++++++------
 underscore.js   | 13 ++++++-------
 3 files changed, 18 insertions(+), 20 deletions(-)

diff --git a/index.html b/index.html
index 7cabf46e6..f38ffa8ab 100644
--- a/index.html
+++ b/index.html
@@ -214,6 +214,7 @@
       <li>- <a href="#values">values</a></li>
       <li>- <a href="#object-functions">functions</a></li>
       <li>- <a href="#extend">extend</a></li>
+      <li>- <a href="#pick">pick</a></li>
       <li>- <a href="#defaults">defaults</a></li>
       <li>- <a href="#clone">clone</a></li>
       <li>- <a href="#tap">tap</a></li>
@@ -1016,16 +1017,14 @@ _.extend({name : 'moe'}, {age : 50});
 =&gt; {name : 'moe', age : 50}
 </pre>
 
-      <p id="restrict">
-        <b class="header">restrict</b><code>_.restrict(source, *keys)</code>
+      <p id="pick">
+        <b class="header">pick</b><code>_.pick(object, *keys)</code>
         <br />
-        Return a clone of the <b>source</b> with only the properties with the
-        property names, or arrays of property names, provided in <b>keys</b>.
+        Return a copy of the <b>object</b>, filtered to only have values for
+        the whitelisted <b>keys</b> (or array of valid keys).
       </p>
       <pre>
-_.restrict({name : 'moe', age: 50, userid : 'moe1'}, 'name', 'age');
-=&gt; {name : 'moe', age : 50}
-_.restrict({name : 'moe', age: 50, userid : 'moe1'}, ['name', 'age']);
+_.pick({name : 'moe', age: 50, userid : 'moe1'}, 'name', 'age');
 =&gt; {name : 'moe', age : 50}
 </pre>
 
diff --git a/test/objects.js b/test/objects.js
index 422e75754..8fb3d1b9d 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -41,13 +41,13 @@ $(document).ready(function() {
     equal(_.keys(result).join(''), 'ab', 'extend does not copy undefined values');
   });
 
-  test("objects: restrict", function() {
+  test("objects: pick", function() {
     var result;
-    result = _.restrict({a:1, b:2, c:3}, 'a', 'c');
+    result = _.pick({a:1, b:2, c:3}, 'a', 'c');
     ok(_.isEqual(result, {a:1, c:3}), 'can restrict properties to those named');
-    result = _.restrict({a:1, b:2, c:3}, ['b', 'c']);
+    result = _.pick({a:1, b:2, c:3}, ['b', 'c']);
     ok(_.isEqual(result, {b:2, c:3}), 'can restrict properties to those named in an array');
-    result = _.restrict({a:1, b:2, c:3}, ['a'], 'b');
+    result = _.pick({a:1, b:2, c:3}, ['a'], 'b');
     ok(_.isEqual(result, {a:1, b:2}), 'can restrict properties to those named in mixed args');
   });
 
@@ -178,7 +178,7 @@ $(document).ready(function() {
 
     // Arrays with primitive and object values.
     ok(_.isEqual([1, "Larry", true], [1, "Larry", true]), "Arrays containing identical primitives are equal");
-    ok(_.isEqual([/Moe/g, new Date(2009, 9, 25)], [/Moe/g, new Date(2009, 9, 25)]), "Arrays containing equivalent elements are equal");
+    ok(_.isEqual([(/Moe/g), new Date(2009, 9, 25)], [(/Moe/g), new Date(2009, 9, 25)]), "Arrays containing equivalent elements are equal");
 
     // Multi-dimensional arrays.
     var a = [new Number(47), false, "Larry", /Moe/, new Date(2009, 11, 13), ['running', 'biking', new String('programming')], {a: 47}];
@@ -346,7 +346,7 @@ $(document).ready(function() {
     Date.prototype.isEqual = function(that) {
       var this_date_components = this.toJSON();
       var that_date_components = (that instanceof Date) ? that.toJSON() : that;
-      delete this_date_components['_type']; delete that_date_components['_type']
+      delete this_date_components['_type']; delete that_date_components['_type'];
       return _.isEqual(this_date_components, that_date_components);
     };
 
diff --git a/underscore.js b/underscore.js
index 12423c7e5..cb2d424de 100644
--- a/underscore.js
+++ b/underscore.js
@@ -648,14 +648,13 @@
     return obj;
   };
 
-  // Restrict a given object to the properties named
-  _.restrict = function(obj) {
-    if (obj !== Object(obj)) throw new TypeError('Invalid object');
-    var dest = {};
-    each(_.flatten(slice.call(arguments, 1)), function(prop) {
-      if (prop in obj) dest[prop] = obj[prop];
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = function(obj) {
+    var result = {};
+    each(_.flatten(slice.call(arguments, 1)), function(key) {
+      if (key in obj) result[key] = obj[key];
     });
-    return dest;
+    return result;
   };
 
   // Fill in a given object with default properties.

From 6f5489fcabd510ca5b0e62ae04e549775da32e2d Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 15:07:56 -0400
Subject: [PATCH 521/533] comment tweak

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 4276ece3e..168bcc209 100644
--- a/underscore.js
+++ b/underscore.js
@@ -824,7 +824,7 @@
     return toString.call(obj) == '[object Number]';
   };
 
-  // Is a givin number finite?
+  // Is a given object a finite number?
   _.isFinite = function(obj) {
     return _.isNumber(obj) && isFinite(obj);
   };

From 4620eb7b617d3be2de3917e8e0c8ca78be0fab36 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 15:30:12 -0400
Subject: [PATCH 522/533] reordering the patch for #504

---
 underscore.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/underscore.js b/underscore.js
index 12ab9ed68..636865628 100644
--- a/underscore.js
+++ b/underscore.js
@@ -302,12 +302,12 @@
   };
 
   // Safely convert anything iterable into a real, live array.
-  _.toArray = function(iterable) {
-    if (!iterable)                return [];
-    if (iterable.toArray && _.isFunction(iterable.toArray)) return iterable.toArray();
-    if (_.isArray(iterable))      return slice.call(iterable);
-    if (_.isArguments(iterable))  return slice.call(iterable);
-    return _.values(iterable);
+  _.toArray = function(obj) {
+    if (!obj)                                     return [];
+    if (_.isArray(obj))                           return slice.call(obj);
+    if (_.isArguments(obj))                       return slice.call(obj);
+    if (obj.toArray && _.isFunction(obj.toArray)) return obj.toArray();
+    return _.values(obj);
   };
 
   // Return the number of elements in an object.

From b52908f78fc6b51a6c5ec28b7dc61092cfd0a4df Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 15:50:31 -0400
Subject: [PATCH 523/533] Fixes #491 - IE9 / Opera 11 test case.

---
 test/objects.js | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/test/objects.js b/test/objects.js
index 2ee0a514d..e2803b21c 100644
--- a/test/objects.js
+++ b/test/objects.js
@@ -3,16 +3,15 @@ $(document).ready(function() {
   module("Objects");
 
   test("objects: keys", function() {
-    var exception = /object/;
     equal(_.keys({one : 1, two : 2}).join(', '), 'one, two', 'can extract the keys from an object');
     // the test above is not safe because it relies on for-in enumeration order
     var a = []; a[1] = 0;
     equal(_.keys(a).join(', '), '1', 'is not fooled by sparse arrays; see issue #95');
-    raises(function() { _.keys(null); }, exception, 'throws an error for `null` values');
-    raises(function() { _.keys(void 0); }, exception, 'throws an error for `undefined` values');
-    raises(function() { _.keys(1); }, exception, 'throws an error for number primitives');
-    raises(function() { _.keys('a'); }, exception, 'throws an error for string primitives');
-    raises(function() { _.keys(true); }, exception, 'throws an error for boolean primitives');
+    raises(function() { _.keys(null); }, TypeError, 'throws an error for `null` values');
+    raises(function() { _.keys(void 0); }, TypeError, 'throws an error for `undefined` values');
+    raises(function() { _.keys(1); }, TypeError, 'throws an error for number primitives');
+    raises(function() { _.keys('a'); }, TypeError, 'throws an error for string primitives');
+    raises(function() { _.keys(true); }, TypeError, 'throws an error for boolean primitives');
   });
 
   test("objects: values", function() {

From 1366d903332fc2af1560c2c45b4fac5e6c75719b Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 16:11:51 -0400
Subject: [PATCH 524/533] default timeout'd scope is null / global. Fixes #484

---
 underscore.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/underscore.js b/underscore.js
index 458ecd324..7d516cac7 100644
--- a/underscore.js
+++ b/underscore.js
@@ -519,7 +519,7 @@
   // it with the arguments supplied.
   _.delay = function(func, wait) {
     var args = slice.call(arguments, 2);
-    return setTimeout(function(){ return func.apply(func, args); }, wait);
+    return setTimeout(function(){ return func.apply(null, args); }, wait);
   };
 
   // Defers a function, scheduling it to run after the current call stack has

From 73e6e87858fdbfa32fe8a41684be3ab6d01ae4d4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Mon, 2 Apr 2012 16:32:53 -0400
Subject: [PATCH 525/533] Fixes #465 -- throttled functions return their value
 when they actually run.

---
 test/functions.js | 11 +++++++----
 underscore.js     |  5 +++--
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/test/functions.js b/test/functions.js
index 086233960..f8e5dc5c8 100644
--- a/test/functions.js
+++ b/test/functions.js
@@ -117,12 +117,15 @@ $(document).ready(function() {
     _.delay(function(){ equal(value, 6, "updated to latest value"); start(); }, 400);
   });
 
-  asyncTest("functions: throttle once", 1, function() {
+  asyncTest("functions: throttle once", 2, function() {
     var counter = 0;
-    var incr = function(){ counter++; };
+    var incr = function(){ return ++counter; };
     var throttledIncr = _.throttle(incr, 100);
-    throttledIncr();
-    _.delay(function(){ equal(counter, 1, "incr was called once"); start(); }, 220);
+    var result = throttledIncr();
+    _.delay(function(){
+      equal(result, 1, "throttled functions return their value");
+      equal(counter, 1, "incr was called once"); start();
+    }, 220);
   });
 
   asyncTest("functions: throttle twice", 1, function() {
diff --git a/underscore.js b/underscore.js
index 7d516cac7..72dc8e9f7 100644
--- a/underscore.js
+++ b/underscore.js
@@ -531,7 +531,7 @@
   // Returns a function, that, when invoked, will only be triggered at most once
   // during a given window of time.
   _.throttle = function(func, wait) {
-    var context, args, timeout, throttling, more;
+    var context, args, timeout, throttling, more, result;
     var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
     return function() {
       context = this; args = arguments;
@@ -544,10 +544,11 @@
       if (throttling) {
         more = true;
       } else {
-        func.apply(context, args);
+        result = func.apply(context, args);
       }
       whenDone();
       throttling = true;
+      return result;
     };
   };
 

From a40001a358a185b4da8a2836381ce5a5a5d29eb6 Mon Sep 17 00:00:00 2001
From: Jakub Wieczorek <fawek@fawek.net>
Date: Tue, 3 Apr 2012 15:23:38 +0200
Subject: [PATCH 526/533] Remove the unnecessary branch in _.shuffle()

The non-zero case works properly for 0 as well.
---
 test/speed.js |  4 ++++
 underscore.js | 10 +++-------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/test/speed.js b/test/speed.js
index 86663a237..82033c51f 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -67,4 +67,8 @@
     return _.range(1000);
   });
 
+  JSLitmus.test('_.shuffle()', function() {
+    return _.shuffle(numbers);
+  });
+
 })();
\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 72dc8e9f7..3b6e4b990 100644
--- a/underscore.js
+++ b/underscore.js
@@ -250,13 +250,9 @@
   _.shuffle = function(obj) {
     var shuffled = [], rand;
     each(obj, function(value, index, list) {
-      if (index == 0) {
-        shuffled[0] = value;
-      } else {
-        rand = Math.floor(Math.random() * (index + 1));
-        shuffled[index] = shuffled[rand];
-        shuffled[rand] = value;
-      }
+      rand = Math.floor(Math.random() * (index + 1));
+      shuffled[index] = shuffled[rand];
+      shuffled[rand] = value;
     });
     return shuffled;
   };

From 8cfb076c9b47c18d15c5cefc5652ccb9eb6119b4 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Tue, 3 Apr 2012 11:49:31 -0400
Subject: [PATCH 527/533] removing added speed test

---
 test/speed.js | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/test/speed.js b/test/speed.js
index 82033c51f..86663a237 100644
--- a/test/speed.js
+++ b/test/speed.js
@@ -67,8 +67,4 @@
     return _.range(1000);
   });
 
-  JSLitmus.test('_.shuffle()', function() {
-    return _.shuffle(numbers);
-  });
-
 })();
\ No newline at end of file

From b04b813f025913fb13a91419062a4279bab80335 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Tue, 3 Apr 2012 10:57:39 -0700
Subject: [PATCH 528/533] Add varname to _.templateSettings.

* Leave out the with statement when using varname.
* Rename source to compiled.
* Comments, comments, comments.
---
 index.html      | 23 +++++++++++++++++-----
 test/utility.js | 11 ++++++++++-
 underscore.js   | 51 +++++++++++++++++++++++++++++++------------------
 3 files changed, 60 insertions(+), 25 deletions(-)

diff --git a/index.html b/index.html
index f38ffa8ab..1872377d9 100644
--- a/index.html
+++ b/index.html
@@ -3,7 +3,7 @@
 <head>
   <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
   <meta http-equiv="X-UA-Compatible" content="chrome=1">
-  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />  
+  <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />
   <title>Underscore.js</title>
   <style>
     body {
@@ -1348,6 +1348,7 @@ _.result(object, 'stuff');
         object as the second parameter to <b>template</b> in order to render
         immediately instead of returning a template function.
       </p>
+
       <pre>
 var compiled = _.template("hello: &lt;%= name %&gt;");
 compiled({name : 'moe'});
@@ -1393,16 +1394,28 @@ var template = _.template("Hello {{ name }}!");
 template({name : "Mustache"});
 =&gt; "Hello Mustache!"</pre>
 
+      <p>
+        By default, <b>template</b> places the values from your data in the local scope
+        via the <tt>with</tt> statement.  However, you can specify a single variable name
+        with the <b>varname</b> setting.
+      </p>
+
+      <pre>
+_.templateSettings.varname = 'data';
+var template = _.template("<%= data.hasWith %>");
+template({hasWith: 'no'});
+=&gt; "no"</pre>
+
       <p>
         Precompiling your templates can be a big help when debugging errors you can't
         reproduce.  This is because precompiled templates can provide line numbers and
         a stack trace, something that is not possible when compiling templates on the client.
-        <b>template</b> provides the <b>source</b> property on the compiled template
+        <b>template</b> provides the <b>compiled</b> property on the compiled template
         function for easy precompilation.
       </p>
 
       <pre>&lt;script&gt;
-  JST.project = <%= _.template(jstText).source %>;
+  JST.project = <%= _.template(jstText).compiled %>;
 &lt;/script&gt;</pre>
 
 
@@ -1570,8 +1583,8 @@ _([1, 2, 3]).value();
         <b class="header">1.2.4</b> &mdash; <small><i>Jan. 4, 2012</i></small><br />
         <ul>
           <li>
-            You now can (and probably should, as it's simpler) 
-            write <tt>_.chain(list)</tt> 
+            You now can (and probably should, as it's simpler)
+            write <tt>_.chain(list)</tt>
             instead of <tt>_(list).chain()</tt>.
           </li>
           <li>
diff --git a/test/utility.js b/test/utility.js
index da374b59d..dc5461b8d 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -1,9 +1,13 @@
 $(document).ready(function() {
 
-  var templateSettings = _.templateSettings;
+  var templateSettings;
 
   module("Utility", {
 
+    setup: function() {
+      templateSettings = _.clone(_.templateSettings);
+    },
+
     teardown: function() {
       _.templateSettings = templateSettings;
     }
@@ -174,4 +178,9 @@ $(document).ready(function() {
     strictEqual(_.result(null, 'x'), null);
   });
 
+  test('_.templateSettings.varname', function() {
+    _.templateSettings.varname = 'data';
+    strictEqual(_.template('<%=data.x%>')({x: 'x'}), 'x');
+  });
+
 });
diff --git a/underscore.js b/underscore.js
index 3b6e4b990..7c2f3e96a 100644
--- a/underscore.js
+++ b/underscore.js
@@ -951,30 +951,43 @@
   // JavaScript micro-templating, similar to John Resig's implementation.
   // Underscore templating handles arbitrary delimiters, preserves whitespace,
   // and correctly escapes quotes within interpolated code.
-  _.template = function(str, data) {
+  _.template = function(source, data) {
     var settings  = _.templateSettings;
-    var source = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
-      'with(obj||{}){__p.push(\'' +
-      str
-        .replace(escaper, function(match) {
-          return '\\' + escapes[match];
-        })
-        .replace(settings.escape || noMatch, function(match, code) {
-          return "',\n_.escape(" + unescape(code) + "),\n'";
-        })
-        .replace(settings.interpolate || noMatch, function(match, code) {
-          return "',\n" + unescape(code) + ",\n'";
-        })
-        .replace(settings.evaluate || noMatch, function(match, code) {
-          return "');\n" + unescape(code) + "\n;__p.push('";
-        })
-        + "');\n}\nreturn __p.join('');";
-    var render = new Function('obj', '_', source);
+    var varname = settings.varname || 'obj';
+
+    // Compile the template source, taking care to escape characters that
+    // cannot be included in a string literal and then unescape them in code
+    // blocks.
+    var compiled = "__p.push('" + source
+      .replace(escaper, function(match) {
+        return '\\' + escapes[match];
+      })
+      .replace(settings.escape || noMatch, function(match, code) {
+        return "',\n_.escape(" + unescape(code) + "),\n'";
+      })
+      .replace(settings.interpolate || noMatch, function(match, code) {
+        return "',\n" + unescape(code) + ",\n'";
+      })
+      .replace(settings.evaluate || noMatch, function(match, code) {
+        return "');\n" + unescape(code) + "\n;__p.push('";
+      }) + "');\n";
+
+    // If no varname is specified, place data values in local scope.
+    if (!settings.varname) compiled = 'with(obj||{}){\n' + compiled + '}\n';
+
+    compiled = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};\n' +
+      compiled + "return __p.join('');\n";
+
+    var render = new Function(varname, '_', compiled);
     if (data) return render(data, _);
     var template = function(data) {
       return render.call(this, data, _);
     };
-    template.source = 'function(obj){\n' + source + '\n}';
+
+    // Provide the compiled function source as a convenience for build time
+    // precompilation.
+    template.compiled = 'function(' + varname + '){\n' + compiled + '\n}';
+
     return template;
   };
 

From 89c50e1a9598296f795fd70dcecfebc19ae81ec2 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Tue, 3 Apr 2012 17:38:39 -0700
Subject: [PATCH 529/533] Allow _.templateSettings to be overriden.

---
 test/utility.js |  5 ++++-
 underscore.js   | 10 +++++-----
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/test/utility.js b/test/utility.js
index dc5461b8d..03577800a 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -179,8 +179,11 @@ $(document).ready(function() {
   });
 
   test('_.templateSettings.varname', function() {
+    var s = '<%=data.x%>';
+    var data = {x: 'x'};
+    strictEqual(_.template(s, data, {varname: 'data'}), 'x')
     _.templateSettings.varname = 'data';
-    strictEqual(_.template('<%=data.x%>')({x: 'x'}), 'x');
+    strictEqual(_.template(s)(data), 'x')
   });
 
 });
diff --git a/underscore.js b/underscore.js
index 7c2f3e96a..30ba01ed5 100644
--- a/underscore.js
+++ b/underscore.js
@@ -951,9 +951,8 @@
   // JavaScript micro-templating, similar to John Resig's implementation.
   // Underscore templating handles arbitrary delimiters, preserves whitespace,
   // and correctly escapes quotes within interpolated code.
-  _.template = function(source, data) {
-    var settings  = _.templateSettings;
-    var varname = settings.varname || 'obj';
+  _.template = function(source, data, settings) {
+    settings = _.extend(_.templateSettings, settings);
 
     // Compile the template source, taking care to escape characters that
     // cannot be included in a string literal and then unescape them in code
@@ -978,7 +977,7 @@
     compiled = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};\n' +
       compiled + "return __p.join('');\n";
 
-    var render = new Function(varname, '_', compiled);
+    var render = new Function(settings.varname || 'obj', '_', compiled);
     if (data) return render(data, _);
     var template = function(data) {
       return render.call(this, data, _);
@@ -986,7 +985,8 @@
 
     // Provide the compiled function source as a convenience for build time
     // precompilation.
-    template.compiled = 'function(' + varname + '){\n' + compiled + '\n}';
+    template.compiled = 'function(' + (settings.varname || 'obj') + '){\n' +
+      compiled + '\n}';
 
     return template;
   };

From f50690f67e6f333f7c213b7f646a30ddeba07348 Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Wed, 4 Apr 2012 08:15:49 -0700
Subject: [PATCH 530/533] Tweak variable names.  Update docs.

* Restore template.source.
* Use variable instead of varname.
* Use text for template input.
* Include settings in documentation.
---
 index.html      | 19 +++++++++----------
 test/utility.js |  6 +++---
 underscore.js   | 18 +++++++++---------
 3 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/index.html b/index.html
index 1872377d9..ef0018e75 100644
--- a/index.html
+++ b/index.html
@@ -1335,7 +1335,7 @@ _.result(object, 'stuff');
 =&gt; "nonsense"</pre>
 
       <p id="template">
-        <b class="header">template</b><code>_.template(templateString, [context])</code>
+        <b class="header">template</b><code>_.template(templateString, [data], [settings])</code>
         <br />
         Compiles JavaScript templates into functions that can be evaluated
         for rendering. Useful for rendering complicated bits of HTML from JSON
@@ -1343,10 +1343,11 @@ _.result(object, 'stuff');
         <tt>&lt;%= &hellip; %&gt;</tt>, as well as execute arbitrary JavaScript code, with
         <tt>&lt;% &hellip; %&gt;</tt>. If you wish to interpolate a value, and have
         it be HTML-escaped, use <tt>&lt;%- &hellip; %&gt;</tt> When you evaluate a template function, pass in a
-        <b>context</b> object that has properties corresponding to the template's free
-        variables. If you're writing a one-off, you can pass the <b>context</b>
+        <b>data</b> object that has properties corresponding to the template's free
+        variables. If you're writing a one-off, you can pass the <b>data</b>
         object as the second parameter to <b>template</b> in order to render
-        immediately instead of returning a template function.
+        immediately instead of returning a template function.  The <b>settings</b> argument
+        should be a hash containing any <tt>_.templateSettings</tt> that should be overriden.
       </p>
 
       <pre>
@@ -1397,25 +1398,23 @@ template({name : "Mustache"});
       <p>
         By default, <b>template</b> places the values from your data in the local scope
         via the <tt>with</tt> statement.  However, you can specify a single variable name
-        with the <b>varname</b> setting.
+        with the <b>variable</b> setting.
       </p>
 
       <pre>
-_.templateSettings.varname = 'data';
-var template = _.template("<%= data.hasWith %>");
-template({hasWith: 'no'});
+_.template("<%= data.hasWith %>", {hasWith: 'no'}, {variable: 'data'});
 =&gt; "no"</pre>
 
       <p>
         Precompiling your templates can be a big help when debugging errors you can't
         reproduce.  This is because precompiled templates can provide line numbers and
         a stack trace, something that is not possible when compiling templates on the client.
-        <b>template</b> provides the <b>compiled</b> property on the compiled template
+        <b>template</b> provides the <b>source</b> property on the compiled template
         function for easy precompilation.
       </p>
 
       <pre>&lt;script&gt;
-  JST.project = <%= _.template(jstText).compiled %>;
+  JST.project = <%= _.template(jstText).source %>;
 &lt;/script&gt;</pre>
 
 
diff --git a/test/utility.js b/test/utility.js
index 03577800a..a367dc1cf 100644
--- a/test/utility.js
+++ b/test/utility.js
@@ -178,11 +178,11 @@ $(document).ready(function() {
     strictEqual(_.result(null, 'x'), null);
   });
 
-  test('_.templateSettings.varname', function() {
+  test('_.templateSettings.variable', function() {
     var s = '<%=data.x%>';
     var data = {x: 'x'};
-    strictEqual(_.template(s, data, {varname: 'data'}), 'x')
-    _.templateSettings.varname = 'data';
+    strictEqual(_.template(s, data, {variable: 'data'}), 'x')
+    _.templateSettings.variable = 'data';
     strictEqual(_.template(s)(data), 'x')
   });
 
diff --git a/underscore.js b/underscore.js
index 30ba01ed5..5cf516b80 100644
--- a/underscore.js
+++ b/underscore.js
@@ -951,13 +951,13 @@
   // JavaScript micro-templating, similar to John Resig's implementation.
   // Underscore templating handles arbitrary delimiters, preserves whitespace,
   // and correctly escapes quotes within interpolated code.
-  _.template = function(source, data, settings) {
+  _.template = function(text, data, settings) {
     settings = _.extend(_.templateSettings, settings);
 
     // Compile the template source, taking care to escape characters that
     // cannot be included in a string literal and then unescape them in code
     // blocks.
-    var compiled = "__p.push('" + source
+    var source = "__p.push('" + text
       .replace(escaper, function(match) {
         return '\\' + escapes[match];
       })
@@ -971,13 +971,13 @@
         return "');\n" + unescape(code) + "\n;__p.push('";
       }) + "');\n";
 
-    // If no varname is specified, place data values in local scope.
-    if (!settings.varname) compiled = 'with(obj||{}){\n' + compiled + '}\n';
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
 
-    compiled = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};\n' +
-      compiled + "return __p.join('');\n";
+    source = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};\n' +
+      source + "return __p.join('');\n";
 
-    var render = new Function(settings.varname || 'obj', '_', compiled);
+    var render = new Function(settings.variable || 'obj', '_', source);
     if (data) return render(data, _);
     var template = function(data) {
       return render.call(this, data, _);
@@ -985,8 +985,8 @@
 
     // Provide the compiled function source as a convenience for build time
     // precompilation.
-    template.compiled = 'function(' + (settings.varname || 'obj') + '){\n' +
-      compiled + '\n}';
+    template.source = 'function(' + (settings.variable || 'obj') + '){\n' +
+      source + '\n}';
 
     return template;
   };

From 57bb74bee7a778752d62e2975fb44b03977cb86c Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Fri, 6 Apr 2012 08:28:00 -0400
Subject: [PATCH 531/533] _.template uses concatenation instead of join.

---
 underscore.js | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/underscore.js b/underscore.js
index 5cf516b80..a5b177efb 100644
--- a/underscore.js
+++ b/underscore.js
@@ -957,25 +957,26 @@
     // Compile the template source, taking care to escape characters that
     // cannot be included in a string literal and then unescape them in code
     // blocks.
-    var source = "__p.push('" + text
+    var source = "__p+='" + text
       .replace(escaper, function(match) {
         return '\\' + escapes[match];
       })
       .replace(settings.escape || noMatch, function(match, code) {
-        return "',\n_.escape(" + unescape(code) + "),\n'";
+        return "'+\n_.escape(" + unescape(code) + ")+\n'";
       })
       .replace(settings.interpolate || noMatch, function(match, code) {
-        return "',\n" + unescape(code) + ",\n'";
+        return "'+(\n" + unescape(code) + ")+\n'";
       })
       .replace(settings.evaluate || noMatch, function(match, code) {
-        return "');\n" + unescape(code) + "\n;__p.push('";
-      }) + "');\n";
+        return "';\n" + unescape(code) + "\n;__p+='";
+      }) + "';\n";
 
     // If a variable is not specified, place data values in local scope.
     if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
 
-    source = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};\n' +
-      source + "return __p.join('');\n";
+    source = "var __p='';" +
+      "var print=function(){__p+=Array.prototype.join.call(arguments, '')};\n" +
+      source + "return __p;\n";
 
     var render = new Function(settings.variable || 'obj', '_', source);
     if (data) return render(data, _);

From 9392d3df186c753cfaf5b31fb4c6f25294fcc8ed Mon Sep 17 00:00:00 2001
From: Brad Dunbar <dunbarb2@gmail.com>
Date: Fri, 6 Apr 2012 09:59:59 -0400
Subject: [PATCH 532/533] Correct errant newlines.

---
 underscore.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/underscore.js b/underscore.js
index a5b177efb..56be06fa6 100644
--- a/underscore.js
+++ b/underscore.js
@@ -965,7 +965,7 @@
         return "'+\n_.escape(" + unescape(code) + ")+\n'";
       })
       .replace(settings.interpolate || noMatch, function(match, code) {
-        return "'+(\n" + unescape(code) + ")+\n'";
+        return "'+\n(" + unescape(code) + ")+\n'";
       })
       .replace(settings.evaluate || noMatch, function(match, code) {
         return "';\n" + unescape(code) + "\n;__p+='";
@@ -987,7 +987,7 @@
     // Provide the compiled function source as a convenience for build time
     // precompilation.
     template.source = 'function(' + (settings.variable || 'obj') + '){\n' +
-      source + '\n}';
+      source + '}';
 
     return template;
   };

From f081bf6f11447b31e6e905f45cfbd208f6ab590f Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas <jashkenas@gmail.com>
Date: Fri, 6 Apr 2012 16:54:09 -0400
Subject: [PATCH 533/533] fixes #541 -- broken docs for tap()

---
 index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index f38ffa8ab..d8b8c0dcd 100644
--- a/index.html
+++ b/index.html
@@ -1061,10 +1061,10 @@ _.clone({name : 'moe'});
       <pre>
 _.chain([1,2,3,200])
   .filter(function(num) { return num % 2 == 0; })
-  .tap(console.log)
+  .tap(alert)
   .map(function(num) { return num * num })
   .value();
-=&gt; [2, 200]
+=&gt; // [2, 200] (alerted)
 =&gt; [4, 40000]
 </pre>