From b9307163b974991885b50e3ac09b54bd00a06153 Mon Sep 17 00:00:00 2001 From: Alfredo Mesen Date: Tue, 3 May 2011 21:09:54 -0600 Subject: [PATCH 01/20] 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);

- uniq_.uniq(array, [isSorted]) + uniq_.uniq(array, [isSorted], [iterator]) Alias: unique
Produces a duplicate-free version of the array, using === to test object equality. If you know in advance that the array is sorted, passing true for isSorted will run a much faster algorithm. + Can receive an iterator to determine which part of the element gets tested. 

 _.uniq([1, 2, 1, 3, 1, 4]);
 => [1, 2, 3, 4]
+
+_.uniq([{name:'moe'}, {name:'curly'}, {name:'larry'}, {name:'curly'}], false, function (value) { return value.name; })
+=>[{name:'moe'}, {name:'curly'}, {name:'larry'}]

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 6846d71f88417905ab0284e89f15e0b0a140ad2c Mon Sep 17 00:00:00 2001 From: shinuza Date: Sat, 7 May 2011 11:24:05 +0200 Subject: [PATCH 02/20] 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 5141a51298c0c4ef02219ec404736a425ebf3da9 Mon Sep 17 00:00:00 2001 From: shinuza Date: Sat, 7 May 2011 16:29:43 +0200 Subject: [PATCH 03/20] 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 40af1652ebb1b07ae1dc7e754e9872b1db5a5a5f Mon Sep 17 00:00:00 2001 From: shinuza Date: Fri, 20 May 2011 09:13:58 +0200 Subject: [PATCH 04/20] 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 cd236d4c47d296d20ae606e8a33ccc25ccd1188e Mon Sep 17 00:00:00 2001 From: Jeremy Ashkenas Date: Wed, 13 Jul 2011 11:09:51 -0400 Subject: [PATCH 05/20] 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 Date: Wed, 13 Jul 2011 12:21:08 -0400 Subject: [PATCH 06/20] 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 Date: Wed, 13 Jul 2011 12:27:11 -0400 Subject: [PATCH 07/20] 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 Date: Wed, 13 Jul 2011 12:36:27 -0400 Subject: [PATCH 08/20] 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 Date: Wed, 13 Jul 2011 12:41:17 -0400 Subject: [PATCH 09/20] 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 19beb29283cf5cdcf1c4f4ff2140378a01d31ceb Mon Sep 17 00:00:00 2001 From: Jeremy Ashkenas Date: Wed, 13 Jul 2011 12:57:51 -0400 Subject: [PATCH 10/20] 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 Date: Wed, 13 Jul 2011 12:58:36 -0400 Subject: [PATCH 11/20] 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 Date: Wed, 13 Jul 2011 11:19:34 -0700 Subject: [PATCH 12/20] 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 Date: Wed, 13 Jul 2011 15:12:50 -0400 Subject: [PATCH 13/20] 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 Date: Wed, 13 Jul 2011 15:57:42 -0400 Subject: [PATCH 14/20] 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 Date: Wed, 13 Jul 2011 15:57:52 -0400 Subject: [PATCH 15/20] 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 39b07d7b2cdbcf2f37b1239772ba58617f7c3650 Mon Sep 17 00:00:00 2001 From: Jeremy Ashkenas Date: Wed, 13 Jul 2011 17:02:12 -0400 Subject: [PATCH 16/20] 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 @@ - underscore.js

underscore.js 

Underscore.js 1.1.6
+      underscore.js           
     
          iterator(array[mid])<iterator(obj)?low=mid+1:high=mid;}returnlow;
-  };if(nativeIndexOf&&array.indexOf===nativeIndexOf)returnarray.indexOf(item);for(i=0,l=array.length;i<l;i++)if(array[i]===item)returni;return-1;
-  };ran=true;returnmemo=func.apply(this,arguments);};
-  };+"');}return __p.join('');";varfunc=newFunction('obj',tmpl);returndata?func(data):func;
-  };
                
                        
               underscore.js             
           		                               
                                             
                            
                                
               
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 require() API. If we're not in CommonJS, add _             
                            
  if (typeof module !== 'undefined' && module.exports) {
     module.exports = _;
     _._ = _;
-  } else {
-    root._ = _;
-  }
             		           
                               
                            
                                
               
Current version.
             		                            
  _.VERSION = '1.1.6';
             		           
                               
                            
                                
               
Collection Functions
             		                            
             		           
                               
                            
                                
               
The cornerstone, an each implementation, aka forEach.
-Handles objects implementing forEach, arrays, and raw objects.
+  } else {             
           
                               
                            
                                
               
Exported as a string, for Closure Compiler "advanced" mode.
             		                            
    root['_'] = _;
+  }
             		           
                               
                            
                                
               
Current version.
             		                            
  _.VERSION = '1.1.7';
             		           
                               
                            
                                
               
Collection Functions
             		                            
             		           
                               
                            
                                
               
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.
             		                            
  var each = _.each = _.forEach = function(obj, iterator, context) {
     if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
-    } else if (_.isNumber(obj.length)) {
+    } else if (obj.length === +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) {
@@ -45,7 +44,7 @@ Delegates to ECMAScript 5's native forEach if avai
         }
       }
     }
-  };
             		           
                               
                            
                                
               
Return the results of applying the iterator to each element.
+  };             
           
                               
                            
                                
               
Return the results of applying the iterator to each element.
 Delegates to ECMAScript 5's native map if available.
             		                            
  _.map = function(obj, iterator, context) {
     var results = [];
     if (obj == null) return results;
@@ -54,7 +53,7 @@ Delegates to ECMAScript 5's native map if availabl
       results[results.length] = iterator.call(context, value, index, list);
     });
     return results;
-  };
             		           
                               
                            
                                
               
Reduce builds up a single result from a list of values, aka inject,
+  };             
           
                               
                            
                                
               
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 (obj == null) obj = [];
@@ -63,7 +62,7 @@ or foldl. Delegates to ECMAScript 5's native 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 {
@@ -72,7 +71,7 @@ or foldl. Delegates to ECMAScript 5's native });
     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.
+  };             
           
                               
                            
                                
               
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) {
@@ -81,7 +80,7 @@ Delegates to ECMAScript 5's native reduceRight if
     }
     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.
             		                            
  _.find = _.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;
     any(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) {
@@ -90,7 +89,7 @@ Delegates to ECMAScript 5's native reduceRight if
       }
     });
     return result;
-  };
             		           
                               
                            
                                
               
Return all the elements that pass a truth test.
+  };             
           
                               
                            
                                
               
Return all the elements that pass a truth test.
 Delegates to ECMAScript 5's native filter if available.
 Aliased as select.
             		                            
  _.filter = _.select = function(obj, iterator, context) {
     var results = [];
@@ -100,14 +99,14 @@ Aliased as select.
             
             if (iterator.call(context, value, index, list)) results[results.length] = value;
     });
     return results;
-  };                        
                               
                            
                                
               
Return all the elements for which a truth test fails.
             		                            
  _.reject = function(obj, iterator, context) {
+  };
             		           
                               
                            
                                
               
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;
     });
     return results;
-  };
             		           
                               
                            
                                
               
Determine whether all of the elements match a truth test.
+  };             
           
                               
                            
                                
               
Determine whether all of the elements match a truth test.
 Delegates to ECMAScript 5's native every if available.
 Aliased as all.
             		                            
  _.every = _.all = function(obj, iterator, context) {
     var result = true;
@@ -117,18 +116,18 @@ Aliased as all.
             
             
       if (!(result = result && iterator.call(context, value, index, list))) return breaker;
     });
     return result;
-  };                        
                               
                            
                                
               
Determine if at least one element in the object matches a truth test.
+  };             
           
                               
                            
                                
               
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);
+    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 (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 ===.
+    return !!result;
+  };             
           
                               
                            
                                
               
Determine if a given value is included in the array or object using ===.
 Aliased as contains.
             		                            
  _.include = _.contains = function(obj, target) {
     var found = false;
     if (obj == null) return found;
@@ -137,14 +136,14 @@ Aliased as contains.
             
             if (found = value === target) return true;
     });
     return found;
-  };                        
                               
                            
                                
               
Invoke a method (with arguments) on every item in a collection.
             		                            
  _.invoke = function(obj, method) {
+  };
             		           
                               
                            
                                
               
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) {
       return (method.call ? method || value : value[method]).apply(value, args);
     });
-  };
             		           
                               
                            
                                
               
Convenience version of a common use case of map: fetching a property.
             		                            
  _.pluck = function(obj, key) {
+  };
             		           
                               
                            
                                
               
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 element or (element-based computation).
             		                            
  _.max = function(obj, iterator, context) {
+  };
             		           
                               
                            
                                
               
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};
     each(obj, function(value, index, list) {
@@ -152,7 +151,7 @@ Aliased as contains.
             
             computed >= result.computed && (result = {value : value, computed : computed});
     });
     return result.value;
-  };                        
                               
                            
                                
               
Return the minimum element (or element-based computation).
             		                            
  _.min = function(obj, iterator, context) {
+  };
             		           
                               
                            
                                
               
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 = {computed : Infinity};
     each(obj, function(value, index, list) {
@@ -160,7 +159,7 @@ Aliased as contains.
             
             computed < result.computed && (result = {value : value, computed : computed});
     });
     return result.value;
-  };                        
                               
                            
                                
               
Sort the object's values by a criterion produced by an iterator.
             		                            
  _.sortBy = function(obj, iterator, context) {
+  };
             		           
                               
                            
                                
               
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 {
         value : value,
@@ -170,7 +169,14 @@ Aliased as contains.
             
             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
+  };             
           
                               
                            
                                
               
Groups the object's values by a criterion produced by an iterator
             		                            
  _.groupBy = function(obj, iterator) {
+    var result = {};
+    each(obj, function(value, index) {
+      var key = iterator(value, index);
+      (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.
             		                            
  _.sortedIndex = function(array, obj, iterator) {
     iterator || (iterator = _.identity);
     var low = 0, high = array.length;
@@ -179,59 +185,64 @@ be inserted so as to maintain order. Uses binary search.
             

                   
     
                              
                               
                            
                                
               
Safely convert anything iterable into a real, live array.
             		                            
  _.toArray = function(iterable) {
+  };
             		           
                               
                            
                                
               
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 iterable;
+    if (_.isArray(iterable))      return slice.call(iterable);
     if (_.isArguments(iterable))  return slice.call(iterable);
     return _.values(iterable);
-  };
             		           
                               
                            
                                
               
Return the number of elements in an object.
             		                            
  _.size = function(obj) {
+  };
             		           
                               
                            
                                
               
Return the number of elements in an object.
             		                            
  _.size = function(obj) {
     return _.toArray(obj).length;
-  };
             		           
                               
                            
                                
               
Array Functions
             		                            
             		           
                               
                            
                                
               
Get the first element of an array. Passing n will return the first N
+  };             
           
                               
                            
                                
               
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.
             		                            
  _.first = _.head = function(array, n, guard) {
     return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
-  };
             		           
                               
                            
                                
               
Returns everything but the first entry of the array. Aliased as tail.
+  };             
           
                               
                            
                                
               
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);
-  };
             		           
                               
                            
                                
               
Get the last element of an array.
             		                            
  _.last = function(array) {
+  };
             		           
                               
                            
                                
               
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) {
+  };
             		           
                               
                            
                                
               
Trim out all falsy values from an array.
             		                            
  _.compact = function(array) {
     return _.filter(array, function(value){ return !!value; });
-  };
             		           
                               
                            
                                
               
Return a completely flattened version of an array.
             		                            
  _.flatten = function(array) {
+  };
             		           
                               
                            
                                
               
Return a completely flattened version of an array.
             		                            
  _.flatten = function(array) {
     return _.reduce(array, function(memo, value) {
       if (_.isArray(value)) return memo.concat(_.flatten(value));
       memo[memo.length] = value;
       return memo;
     }, []);
-  };
             		           
                               
                            
                                
               
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); });
-  };
             		           
                               
                            
                                
               
Produce a duplicate-free version of the array. If the array has already
+  };             
           
                               
                            
                                
               
Return a version of the array that does not contain the specified value(s).
             		                            
  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
             		           
                               
                            
                                
               
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;
       return memo;
     }, []);
-  };
             		           
                               
                            
                                
               
Produce an array that contains every item shared between all the
-passed-in arrays.
             		                            
  _.intersect = function(array) {
+  };
             		           
                               
                            
                                
               
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. (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) {
         return _.indexOf(other, item) >= 0;
       });
     });
-  };
             		           
                               
                            
                                
               
Zip together multiple lists into a single array -- elements that share
+  };             
           
                               
                            
                                
               
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() {
     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);
     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 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.
@@ -246,13 +257,13 @@ for isSorted to use binary search.
             		
            
                     
                              
                               
                            
                                
               
Delegates to ECMAScript 5's native lastIndexOf if available.
             		                            
  _.lastIndexOf = function(array, item) {
+  };
             		           
                               
                            
                                
               
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;
     return -1;
-  };
             		           
                               
                            
                                
               
Generate an integer Array containing an arithmetic progression. A port of
+  };             
           
                               
                            
                                
               
Generate an integer Array containing an arithmetic progression. A port of
 the native Python range() function. See
 the Python documentation.
             		                            
  _.range = function(start, stop, step) {
     if (arguments.length <= 1) {
@@ -271,7 +282,7 @@ the native Python range() function. See
     }
 
     return range;
-  };
             		           
                               
                            
                                
               
Function (ahem) Functions
             		                            
             		           
                               
                            
                                
               
Create a function bound to a given object (assigning this, and arguments,
+  };             
           
                               
                            
                                
               
Function (ahem) Functions
             		                            
             		           
                               
                            
                                
               
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) {
@@ -280,27 +291,27 @@ We check for func.bind first, to fail fast when func i
     return function() {
       return func.apply(obj, args.concat(slice.call(arguments)));
     };
-  };
             		           
                               
                            
                                
               
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(obj) {
     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) {
+  };
             		           
                               
                            
                                
               
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 hasOwnProperty.call(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
     };
-  };
             		           
                               
                            
                                
               
Delays a function for the given number of milliseconds, and then calls
+  };             
           
                               
                            
                                
               
Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.
             		                            
  _.delay = function(func, wait) {
     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
+  };             
           
                               
                            
                                
               
Defers a function, scheduling it to run after the current call stack has
 cleared.
             		                            
  _.defer = function(func) {
     return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
-  };
             		           
                               
                            
                                
               
Internal function used to implement _.throttle and _.debounce.
             		                            
  var limit = function(func, wait, debounce) {
+  };
             		           
                               
                            
                                
               
Internal function used to implement _.throttle and _.debounce.
             		                            
  var limit = function(func, wait, debounce) {
     var timeout;
     return function() {
       var context = this, args = arguments;
@@ -311,14 +322,14 @@ cleared.
             
                            
if (debounce) clearTimeout(timeout);
       if (debounce || !timeout) timeout = setTimeout(throttler, wait);
     };
-  };
             		           
                               
                            
                                
               
Returns a function, that, when invoked, will only be triggered at most once
+  };             
           
                               
                            
                                
               
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
+  };             
           
                               
                            
                                
               
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
+  };             
           
                               
                            
                                
               
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) {
     var ran = false, memo;
     return function() {
@@ -326,120 +337,127 @@ often you call it. Useful for lazy initialization.
             

         
           
                             
                               
                            
                                
               
Returns the first function passed as an argument to the second,
+  };             
           
                               
                            
                                
               
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(slice.call(arguments));
       return wrapper.apply(this, args);
     };
-  };
             		           
                               
                            
                                
               
Returns a function that is the composition of a list of functions, each
+  };             
           
                               
                            
                                
               
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);
     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];
     };
-  };
             		           
                               
                            
                                
               
Returns a function that will only be executed after being called N times.
             		                            
  _.after = function(times, func) {
+  };
             		           
                               
                            
                                
               
Returns a function that will only be executed after being called N times.
             		                            
  _.after = function(times, func) {
     return function() {
       if (--times < 1) { return func.apply(this, arguments); }
     };
-  };
             		           
                               
                            
                                
               
Object Functions
             		                            
             		           
                               
                            
                                
               
Retrieve the names of an object's properties.
+  };             
           
                               
                            
                                
               
Object Functions
             		                            
             		           
                               
                            
                                
               
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;
-  };
             		           
                               
                            
                                
               
Retrieve the values of an object's properties.
             		                            
  _.values = function(obj) {
+  };
             		           
                               
                            
                                
               
Retrieve the values of an object's properties.
             		                            
  _.values = function(obj) {
     return _.map(obj, _.identity);
-  };
             		           
                               
                            
                                
               
Return a sorted list of the function names available on the object.
+  };             
           
                               
                            
                                
               
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();
-  };
             		           
                               
                            
                                
               
Extend a given object with all the properties in passed-in object(s).
             		                            
  _.extend = function(obj) {
+    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).
             		                            
  _.extend = function(obj) {
     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) {
+  };
             		           
                               
                            
                                
               
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) {
+  };
             		           
                               
                            
                                
               
Create a (shallow-cloned) duplicate of an object.
             		                            
  _.clone = function(obj) {
     return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
-  };
             		           
                               
                            
                                
               
Invokes interceptor with the obj, and then returns 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.
             		                            
    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);
             		           
                               
                            
                                
               
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))
+  };
             		           
                               
                            
                                
               
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;
+             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;
-  };
             		           
                               
                            
                                
               
Is a given array or object empty?
             		                            
  _.isEmpty = function(obj) {
+  };
             		           
                               
                            
                                
               
Is a given array or object empty?
             		                            
  _.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;
-  };
             		           
                               
                            
                                
               
Is a given value a DOM element?
             		                            
  _.isElement = function(obj) {
+  };
             		           
                               
                            
                                
               
Is a given value a DOM element?
             		                            
  _.isElement = function(obj) {
     return !!(obj && obj.nodeType == 1);
-  };
             		           
                               
                            
                                
               
Is a given value an array?
+  };             
           
                               
                            
                                
               
Is a given value an array?
 Delegates to ECMA5's native Array.isArray
             		                            
  _.isArray = nativeIsArray || function(obj) {
     return toString.call(obj) === '[object Array]';
-  };
             		           
                               
                            
                                
               
Is a given variable an arguments object?
             		                            
  _.isArguments = function(obj) {
+  };
             		           
                               
                            
                                
               
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'));
-  };
             		           
                               
                            
                                
               
Is a given value a function?
             		                            
  _.isFunction = function(obj) {
+  };
             		           
                               
                            
                                
               
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) {
+  };
             		           
                               
                            
                                
               
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) {
+  };
             		           
                               
                            
                                
               
Is a given value a number?
             		                            
  _.isNumber = function(obj) {
     return !!(obj === 0 || (obj && obj.toExponential && obj.toFixed));
-  };
             		           
                               
                            
                                
               
Is the given value NaN? NaN happens to be the only value in JavaScript
+  };             
           
                               
                            
                                
               
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;
-  };
             		           
                               
                            
                                
               
Is a given value a boolean?
             		                            
  _.isBoolean = function(obj) {
+  };
             		           
                               
                            
                                
               
Is a given value a boolean?
             		                            
  _.isBoolean = function(obj) {
     return obj === true || obj === false;
-  };
             		           
                               
                            
                                
               
Is a given value a date?
             		                            
  _.isDate = function(obj) {
+  };
             		           
                               
                            
                                
               
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) {
+  };
             		           
                               
                            
                                
               
Is the given value a regular expression?
             		                            
  _.isRegExp = function(obj) {
     return !!(obj && obj.test && obj.exec && (obj.ignoreCase || obj.ignoreCase === false));
-  };
             		           
                               
                            
                                
               
Is a given value equal to null?
             		                            
  _.isNull = function(obj) {
+  };
             		           
                               
                            
                                
               
Is a given value equal to null?
             		                            
  _.isNull = function(obj) {
     return obj === null;
-  };
             		           
                               
                            
                                
               
Is a given variable undefined?
             		                            
  _.isUndefined = function(obj) {
+  };
             		           
                               
                            
                                
               
Is a given variable undefined?
             		                            
  _.isUndefined = function(obj) {
     return obj === void 0;
-  };
             		           
                               
                            
                                
               
Utility Functions
             		                            
             		           
                               
                            
                                
               
Run Underscore.js in noConflict mode, returning the _ variable to its
+  };             
           
                               
                            
                                
               
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) {
+  };
             		           
                               
                            
                                
               
Keep the identity function around for default iterators.
             		                            
  _.identity = function(value) {
     return value;
-  };
             		           
                               
                            
                                
               
Run a function n times.
             		                            
  _.times = function (n, iterator, context) {
+  };
             		           
                               
                            
                                
               
Run a function n times.
             		                            
  _.times = function (n, iterator, context) {
     for (var i = 0; i < n; i++) iterator.call(context, i);
-  };
             		           
                               
                            
                                
               
Add your own custom functions to the Underscore object, ensuring that
+  };             
           
                               
                            
                                
               
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).
+  };             
           
                               
                            
                                
               
Generate a unique integer id (unique within the entire client session).
 Useful for temporary DOM ids.
             		                            
  var idCounter = 0;
   _.uniqueId = function(prefix) {
     var id = idCounter++;
     return prefix ? prefix + id : id;
-  };
             		           
                               
                            
                                
               
By default, Underscore uses ERB-style template delimiters, change the
+  };             
           
                               
                            
                                
               
By default, Underscore uses ERB-style template delimiters, change the
 following template settings to use alternative delimiters.
             		                            
  _.templateSettings = {
     evaluate    : /<%([\s\S]+?)%>/g,
     interpolate : /<%=([\s\S]+?)%>/g
-  };
             		           
                               
                            
                                
               
JavaScript micro-templating, similar to John Resig's implementation.
+  };             
           
                               
                            
                                
               
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;
@@ -460,31 +478,31 @@ and correctly escapes quotes within interpolated code.
             

           
          
                                  
                               
                            
                                
               
The OOP Wrapper
             		                            
             		           
                               
                            
                                
               
If Underscore is called as a function, it returns a wrapped object that
+  };             
           
                               
                            
                                
               
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; };
             		           
                               
                            
                                
               
Expose wrapper.prototype as _.prototype
             		                            
  _.prototype = wrapper.prototype;
             		           
                               
                            
                                
               
Helper function to continue chaining intermediate results.
             		                            
  var result = function(obj, chain) {
+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;
-  };
             		           
                               
                            
                                
               
A method to easily add functions to the OOP wrapper.
             		                            
  var addToWrapper = function(name, func) {
+  };
             		           
                               
                            
                                
               
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);
     };
-  };
             		           
                               
                            
                                
               
Add all of the Underscore functions to the wrapper object.
             		                            
  _.mixin(_);
             		           
                               
                            
                                
               
Add all mutator Array functions to the wrapper.
             		                            
  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+  };
             		           
                               
                            
                                
               
Add all of the Underscore functions to the wrapper object.
             		                            
  _.mixin(_);
             		           
                               
                            
                                
               
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) {
+  });
             		           
                               
                            
                                
               
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() {
+  });
             		           
                               
                            
                                
               
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() {
+  };
             		           
                               
                            
                                
               
Extracts the result from a wrapped and chained object.
             		                            
  wrapper.prototype.value = function() {
     return this._wrapped;
   };
 
diff --git a/index.html b/index.html
index 8e73aba63..0641e9059 100644
--- a/index.html
+++ b/index.html
@@ -118,11 +118,11 @@
 
     
-        
-        
+        
+        
-        
+        

       
Development Version (1.1.6)27kb, Uncompressed with CommentsDevelopment Version (1.1.7)28kb, Uncompressed with Comments
       

       
Production Version (1.1.6)Production Version (1.1.7)
         3kb, Minified and Gzipped
       

     

@@ -149,8 +149,9 @@
       Arrays
       

       first, rest, last,
-      compact, flatten, without, uniq,
-      intersect, zip, indexOf,
+      compact, flatten, without, 
+      union, intersection, difference, 
+      uniq, zip, indexOf,
       lastIndexOf, range
     

 
@@ -555,6 +556,39 @@ _.flatten([1, [2], [3, [[[4]]]]]);
       
 _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
 => [2, 3, 4]
+

+
+      

+        union_.union(*arrays)
+        

+        Computes the union of the passed-in arrays: the list of unique items,
+        in order, that are present in one or more of the arrays.
+      

+      
+_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+=> [1, 2, 3, 101, 10]
+

+
+      

+        intersection_.intersection(*arrays)
+        

+        Computes the list of values that are the intersection of all the arrays.
+        Each value in the result is present in each of the arrays.
+      

+      
+_.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+=> [1, 2]
+

+
+      

+        difference_.difference(array, other)
+        

+        Similar to without, but returns the values from array that
+        are not present in other.
+      

+      
+_.difference([1, 2, 3, 4, 5], [5, 2, 10]);
+=> [1, 3, 4]
 

 
       

@@ -568,17 +602,6 @@ _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
       
 _.uniq([1, 2, 1, 3, 1, 4]);
 => [1, 2, 3, 4]
-

-
-      

-        intersect_.intersect(*arrays)
-        

-        Computes the list of values that are the intersection of all the arrays.
-        Each value in the result is present in each of the arrays.
-      

-      
-_.intersect([1, 2, 3], [101, 2, 1, 10], [2, 1]);
-=> [1, 2]
 

 
       

@@ -1257,6 +1280,17 @@ _([1, 2, 3]).value();
 
       
Change Log

       
+      

+        1.1.7 — July 13, 2011

+        Added _.groupBy, which aggregates a collection into groups of like items.
+        Added _.untion and _.difference, to complement the 
+        (re-named) _.intersection.
+        Various improvements for support of sparse arrays.
+        _.toArray now returns a clone, if directly passed an array.
+        _.functions now also returns the names of functions that are present
+        in the prototype chain.
+      

+            
       

         1.1.6 — April 18, 2011

         Added _.after, 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=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;bd?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||
-(d=b.identity);for(var e=0,f=a.length;e>1;d(a[g])=0})})};b.zip=function(){for(var a=f.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),e=0;e=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/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}})();
+(d=b.identity);for(var e=0,f=a.length;e>1;d(a[g])=0})})};b.difference=function(a,c){return b.filter(a,function(a){return!b.include(c,a)})};b.zip=function(){for(var a=f.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),e=0;e=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){var c=[],d;for(d in a)b.isFunction(a[d])&&c.push(d);return 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(c.isEqual)return c.isEqual(a);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.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/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 
Date: Wed, 13 Jul 2011 17:05:20 -0400
Subject: [PATCH 17/20] 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();
       

         1.1.7 — July 13, 2011

         Added _.groupBy, which aggregates a collection into groups of like items.
-        Added _.untion and _.difference, to complement the 
+        Added _.union and _.difference, to complement the 
         (re-named) _.intersection.
         Various improvements for support of sparse arrays.
         _.toArray now returns a clone, if directly passed an array.

From 75b21957c750fef21e2e24ad6bf902b06137a619 Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas 
Date: Wed, 3 Aug 2011 11:16:57 -0400
Subject: [PATCH 18/20] 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.
       

+      
+      

+        In a similar fashion, _.each and all of the other functions 
+        based on it are designed to be able to iterate over any Array-like
+        JavaScript object, including arguments, NodeLists, and more.
+        Passing hash-like objects with a numeric length key won't work.
+      

 
 
       
Links & Suggested Reading


From 6cf647505fba5b0dc182d41cba1342cefe3acd35 Mon Sep 17 00:00:00 2001
From: Brian Haveri 
Date: Thu, 4 Aug 2011 12:42:29 -0600
Subject: [PATCH 19/20] 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.
       

       
+      

+        Underscore.php,
+        a PHP port of the functions that are applicable in both languages.
+        Includes OOP-wrapping and chaining.
+        The source is
+        available on GitHub.
+      

+      
       

         Underscore.string,
         an Underscore extension that adds functions for string-manipulation: 

From 610b3471742db0ee117e5d6117875277cc396aba Mon Sep 17 00:00:00 2001
From: Jeremy Ashkenas 
Date: Thu, 11 Aug 2011 10:53:29 -0400
Subject: [PATCH 20/20] 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.
       

       
+      

+        Underscore-perl,
+        a Perl port of many of the Underscore.js functions, 
+        aimed at on Perl hashes and arrays, also 
+        available on GitHub.
+      

+      
       

         Underscore.string,
         an Underscore extension that adds functions for string-manipulation: