diff --git a/docs/underscore.html b/docs/underscore.html index c92a32016..0c2bd9652 100644 --- a/docs/underscore.html +++ b/docs/underscore.html @@ -1,4 +1,4 @@ - underscore.js

underscore.js 

Underscore.js 1.3.0
+      underscore.js           
     
          hasher||(hasher=_.identity);returnfunction(){varkey=hasher.apply(this,arguments);
-      returnhasOwnProperty.call(memo,key)?memo[key]:(memo[key]=func.apply(this,arguments));
+      return_.has(memo,key)?memo[key]:(memo[key]=func.apply(this,arguments));};};
 Delegates to ECMAScript 5's native Object.keys
str.replace(/\\/g,'\\\\').replace(/'/g,"\\'").replace(c.escape||noMatch,function(match,code){
-           return"',_.escape("+code.replace(/\\'/g,"'")+"),'";
+           return"',_.escape("+unescape(code)+"),'";}).replace(c.interpolate||noMatch,function(match,code){
-           return"',"+code.replace(/\\'/g,"'")+",'";
+           return"',"+unescape(code)+",'";}).replace(c.evaluate||noMatch,function(match,code){
-           return"');"+code.replace(/\\'/g,"'")
-                              .replace(/[\r\n\t]/g,' ')
-                              .replace(/\\\\/g,'\\')+";__p.push('";
+           return"');"+unescape(code).replace(/[\r\n\t]/g,' ')+";__p.push('";}).replace(/\r/g,'\\r').replace(/\n/g,'\\n')
@@ -590,19 +593,19 @@ and correctly escapes quotes within interpolated code.
returnfunction(data){returnfunc.call(this,data,_);};
-  };if((name=='shift'||name=='splice')&&length===0)deletewrapped[0];returnresult(wrapped,this._chain);};
-  });
                
                        
               underscore.js             
           		                               
                                             
                            
                                
               
Underscore.js 1.3.1
 (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 Underscore is freely distributable under the MIT license.
 Portions of Underscore are inspired or borrowed from Prototype,
@@ -31,7 +31,7 @@ for Closure Compiler "advanced" mode.
             
             exports._ = _;
   } else {
     root['_'] = _;
-  }                        
                               
                            
                                
               
Current version.
             		                            
  _.VERSION = '1.3.0';
             		           
                               
                            
                                
               
Collection Functions
             		                            
             		           
                               
                            
                                
               
The cornerstone, an each implementation, aka forEach.
+  }             
           
                               
                            
                                
               
Current version.
             		                            
  _.VERSION = '1.3.1';
             		           
                               
                            
                                
               
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;
@@ -43,13 +43,13 @@ Delegates to ECMAScript 5's native forEach if avai
       }
     } else {
       for (var key in obj) {
-        if (hasOwnProperty.call(obj, key)) {
+        if (_.has(obj, key)) {
           if (iterator.call(context, obj[key], key, obj) === breaker) return;
         }
       }
     }
   };
             		           
                               
                            
                                
               
Return the results of applying the iterator to each element.
-Delegates to ECMAScript 5's native map if available.
             		                            
  _.map = function(obj, iterator, context) {
+Delegates to ECMAScript 5's native map if available.
             
                            
  _.map = _.collect = function(obj, iterator, context) {
     var results = [];
     if (obj == null) return results;
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
@@ -349,7 +349,7 @@ all callbacks defined on an object belong to it.
             

         
       
                             
     
                           
                               
                            
                                
               
Delays a function for the given number of milliseconds, and then calls
 it with the arguments supplied.
             		                            
  _.delay = function(func, wait) {
@@ -425,7 +425,7 @@ consuming the return value of the function that follows.
             
                                         
  _.keys = nativeKeys || function(obj) {
     if (obj !== Object(obj)) throw new TypeError('Invalid object');
     var keys = [];
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) keys[keys.length] = key;
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
     return keys;
   };
             		           
                               
                            
                                
               
Retrieve the values of an object's properties.
             		                            
  _.values = function(obj) {
     return _.map(obj, _.identity);
@@ -439,7 +439,7 @@ Aliased as methods
             
             };                        
                               
                            
                                
               
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];
+        obj[prop] = source[prop];
       }
     });
     return obj;
@@ -487,11 +487,11 @@ unique nested structures.
             
             
         }
       }
     } else {                        
                               
                            
                                
               
Objects with different constructors are not equivalent.
             		                            
      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
             		           
                               
                            
                                
               
Deep compare objects.
             		                            
      for (var key in a) {
-        if (hasOwnProperty.call(a, key)) {
             		           
                               
                            
                                
               
Count the expected number of properties.
             		                            
          size++;
             		           
                               
                            
                                
               
Deep compare each member.
             		                            
          if (!(result = hasOwnProperty.call(b, key) && eq(a[key], b[key], stack))) break;
+        if (_.has(a, key)) {
             		           
                               
                            
                                
               
Count the expected number of properties.
             		                            
          size++;
             		           
                               
                            
                                
               
Deep compare each member.
             		                            
          if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break;
         }
       }
             		           
                               
                            
                                
               
Ensure that both objects contain the same number of properties.
             		                            
      if (result) {
         for (key in b) {
-          if (hasOwnProperty.call(b, key) && !(size--)) break;
+          if (_.has(b, key) && !(size--)) break;
         }
         result = !size;
       }
@@ -502,7 +502,7 @@ unique nested structures.
             
             
   };                        
                               
                            
                                
               
Is a given array, string, or object empty?
 An "empty" object has no enumerable own-properties.
             		                            
  _.isEmpty = function(obj) {
     if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
-    for (var key in obj) if (hasOwnProperty.call(obj, key)) return false;
+    for (var key in obj) if (_.has(obj, key)) return false;
     return true;
   };
             		           
                               
                            
                                
               
Is a given value a DOM element?
             		                            
  _.isElement = function(obj) {
     return !!(obj && obj.nodeType == 1);
@@ -516,7 +516,7 @@ Delegates to ECMA5's native Array.isArray
             
             };
   if (!_.isArguments(arguments)) {
     _.isArguments = function(obj) {
-      return !!(obj && hasOwnProperty.call(obj, 'callee'));
+      return !!(obj && _.has(obj, 'callee'));
     };
   }                        
                               
                            
                                
               
Is a given value a function?
             		                            
  _.isFunction = function(obj) {
     return toString.call(obj) == '[object Function]';
@@ -535,34 +535,39 @@ Delegates to ECMA5's native Array.isArray
             
             return obj === null;
   };                        
                               
                            
                                
               
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
+  };             
           
                               
                            
                                
               
Has own property?
             		                            
  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
             		           
                               
                            
                                
               
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);
-  };
             		           
                               
                            
                                
               
Escape a string for HTML interpolation.
             		                            
  _.escape = function(string) {
+  };
             		           
                               
                            
                                
               
Escape a string for HTML interpolation.
             		                            
  _.escape = function(string) {
     return (''+string).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
-  };
             		           
                               
                            
                                
               
Add your own custom functions to the Underscore object, ensuring that
+  };             
           
                               
                            
                                
               
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,
     escape      : /<%-([\s\S]+?)%>/g
-  };
             		           
                               
                            
                                
               
When customizing templateSettings, if you don't want to define an
+  };             
           
                               
                            
                                
               
When customizing templateSettings, if you don't want to define an
 interpolation, evaluation or escaping regex, we need one that is
-guaranteed not to match.
             		                            
  var noMatch = /.^/;
             		           
                               
                            
                                
               
JavaScript micro-templating, similar to John Resig's implementation.
+guaranteed not to match.
             		                            
  var noMatch = /.^/;
             		           
                               
                            
                                
               
Within an interpolation, evaluation, or escaping, remove HTML escaping
+that had been previously added.
             		                            
  var unescape = function(code) {
+    return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'");
+  };
             		           
                               
                            
                                
               
JavaScript micro-templating, similar to John Resig's implementation.
 Underscore templating handles arbitrary delimiters, preserves whitespace,
 and correctly escapes quotes within interpolated code.
             		                            
  _.template = function(str, data) {
     var c  = _.templateSettings;
@@ -571,15 +576,13 @@ and correctly escapes quotes within interpolated code.
             

        
           
                          
          
                          
          
                             
          
           
                        
       
          
                             
                               
                            
                                
               
Add a "chain" function, which will delegate to the wrapper.
             		                            
  _.chain = function(obj) {
+  };
             		           
                               
                            
                                
               
Add a "chain" function, which will delegate to the wrapper.
             		                            
  _.chain = function(obj) {
     return _(obj).chain();
-  };
             		           
                               
                            
                                
               
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() {
       var wrapped = this._wrapped;
@@ -611,15 +614,15 @@ underscore functions. Wrapped objects may be chained.
             

                    
         
                             
                               
                            
                                
               
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 69a6e13be..52c967122 100644
--- a/index.html
+++ b/index.html
@@ -134,7 +134,7 @@
   

+
+      

+        has_.has(object, key)
+        

+        Does the object contain the given key? Identical to 
+        object.hasOwnProperty(key), but uses a safe reference to the
+        hasOwnProperty function, in case it's been 
+        overridden accidentally.
+      

+      
+_.has({a: 1, b: 2, c: 3}, "b");
+=> true
 

 
       

@@ -1469,6 +1484,25 @@ _([1, 2, 3]).value();
 
       
Change Log

       
+      

+        1.3.1 — Jan. 23, 2012

+        
    
+          
  • 
+            Added an _.has function, as a safer way to use hasOwnProperty.
+          
    • 
+          
  • 
+            Added _.collect as an alias for _.map. Smalltalkers, rejoice.
+          
    • 
+          
  • 
+            Reverted an old change so that _.extend will correctly copy 
+            over keys with undefined values again.
+          
    • 
+          
  • 
+            Bugfix to stop escaping slashes within interpolations in _.template.
+          
    • 
+        

+      

+      
       

         1.3.0 — Jan. 11, 2012

         
    
diff --git a/package.json b/package.json
index 0749177b4..4a2e3ca72 100644
--- a/package.json
+++ b/package.json
@@ -4,8 +4,7 @@
   "homepage"      : "http://documentcloud.github.com/underscore/",
   "keywords"      : ["util", "functional", "server", "client", "browser"],
   "author"        : "Jeremy Ashkenas ",
-  "contributors"  : [],
   "repository"    : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
   "main"          : "underscore.js",
-  "version"       : "1.3.0"
+  "version"       : "1.3.1"
 }
diff --git a/underscore-min.js b/underscore-min.js
index fe1ffd20a..5b55f32be 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,31 +1,31 @@
-// Underscore.js 1.3.0
+// Underscore.js 1.3.1
 // (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 // Underscore is freely distributable under the MIT license.
 // Portions of Underscore are inspired or borrowed from Prototype,
 // Oliver Steele's Functional, and John Resig's Micro-Templating.
 // For all details and documentation:
 // http://documentcloud.github.com/underscore
-(function(){function r(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual&&b.isFunction(a.isEqual))return a.isEqual(c);if(c.isEqual&&b.isFunction(c.isEqual))return c.isEqual(a);var e=l.call(a);if(e!=l.call(c))return false;switch(e){case "[object String]":return a==String(c);case "[object Number]":return a!=+a?c!=+c:a==0?1/a==1/c:a==+c;case "[object Date]":case "[object Boolean]":return+a==+c;case "[object RegExp]":return a.source==
-c.source&&a.global==c.global&&a.multiline==c.multiline&&a.ignoreCase==c.ignoreCase}if(typeof a!="object"||typeof c!="object")return false;for(var f=d.length;f--;)if(d[f]==a)return true;d.push(a);var f=0,g=true;if(e=="[object Array]"){if(f=a.length,g=f==c.length)for(;f--;)if(!(g=f in a==f in c&&r(a[f],c[f],d)))break}else{if("constructor"in a!="constructor"in c||a.constructor!=c.constructor)return false;for(var h in a)if(m.call(a,h)&&(f++,!(g=m.call(c,h)&&r(a[h],c[h],d))))break;if(g){for(h in c)if(m.call(c,
-h)&&!f--)break;g=!f}}d.pop();return g}var s=this,G=s._,o={},k=Array.prototype,p=Object.prototype,i=k.slice,H=k.unshift,l=p.toString,m=p.hasOwnProperty,w=k.forEach,x=k.map,y=k.reduce,z=k.reduceRight,A=k.filter,B=k.every,C=k.some,q=k.indexOf,D=k.lastIndexOf,p=Array.isArray,I=Object.keys,t=Function.prototype.bind,b=function(a){return new n(a)};if(typeof exports!=="undefined"){if(typeof module!=="undefined"&&module.exports)exports=module.exports=b;exports._=b}else s._=b;b.VERSION="1.3.0";var j=b.each=
-b.forEach=function(a,c,b){if(a!=null)if(w&&a.forEach===w)a.forEach(c,b);else if(a.length===+a.length)for(var e=0,f=a.length;e2;a==null&&(a=
-[]);if(y&&a.reduce===y)return e&&(c=b.bind(c,e)),f?a.reduce(c,d):a.reduce(c);j(a,function(a,b,i){f?d=c.call(e,d,a,b,i):(d=a,f=true)});if(!f)throw new TypeError("Reduce of empty array with no initial value");return d};b.reduceRight=b.foldr=function(a,c,d,e){var f=arguments.length>2;a==null&&(a=[]);if(z&&a.reduceRight===z)return e&&(c=b.bind(c,e)),f?a.reduceRight(c,d):a.reduceRight(c);var g=b.toArray(a).reverse();e&&!f&&(c=b.bind(c,e));return f?b.reduce(g,c,d,e):b.reduce(g,c)};b.find=b.detect=function(a,
-c,b){var e;E(a,function(a,g,h){if(c.call(b,a,g,h))return e=a,true});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(A&&a.filter===A)return a.filter(c,b);j(a,function(a,g,h){c.call(b,a,g,h)&&(e[e.length]=a)});return e};b.reject=function(a,c,b){var e=[];if(a==null)return e;j(a,function(a,g,h){c.call(b,a,g,h)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=true;if(a==null)return e;if(B&&a.every===B)return a.every(c,b);j(a,function(a,g,h){if(!(e=e&&c.call(b,
-a,g,h)))return o});return e};var E=b.some=b.any=function(a,c,d){c||(c=b.identity);var e=false;if(a==null)return e;if(C&&a.some===C)return a.some(c,d);j(a,function(a,b,h){if(e||(e=c.call(d,a,b,h)))return o});return!!e};b.include=b.contains=function(a,c){var b=false;if(a==null)return b;return q&&a.indexOf===q?a.indexOf(c)!=-1:b=E(a,function(a){return a===c})};b.invoke=function(a,c){var d=i.call(arguments,2);return b.map(a,function(a){return(b.isFunction(c)?c||a:a[c]).apply(a,d)})};b.pluck=function(a,
-c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);if(!c&&b.isEmpty(a))return-Infinity;var e={computed:-Infinity};j(a,function(a,b,h){b=c?c.call(d,a,b,h):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);if(!c&&b.isEmpty(a))return Infinity;var e={computed:Infinity};j(a,function(a,b,h){b=c?c.call(d,a,b,h):a;bd?1:0}),"value")};b.groupBy=function(a,c){var d={},e=b.isFunction(c)?c:function(a){return a[c]};j(a,function(a,b){var c=e(a,b);(d[c]||(d[c]=[])).push(a)});return d};b.sortedIndex=function(a,c,d){d||(d=
-b.identity);for(var e=0,f=a.length;e>1;d(a[g])=0})})};b.difference=function(a){var c=b.flatten(i.call(arguments,1));return b.filter(a,function(a){return!b.include(c,a)})};b.zip=function(){for(var a=i.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),e=0;e=0;d--)b=[a[d].apply(this,b)];return b[0]}};b.after=function(a,b){return a<=
-0?b():function(){if(--a<1)return b.apply(this,arguments)}};b.keys=I||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var b=[],d;for(d in a)m.call(a,d)&&(b[b.length]=d);return b};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){var c=[],d;for(d in a)b.isFunction(a[d])&&c.push(d);return c.sort()};b.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)b[d]!==void 0&&(a[d]=b[d])});return a};b.defaults=function(a){j(i.call(arguments,1),
-function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return!b.isObject(a)?a:b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,b){return r(a,b,[])};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(m.call(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=p||function(a){return l.call(a)=="[object Array]"};b.isObject=function(a){return a===Object(a)};
-b.isArguments=function(a){return l.call(a)=="[object Arguments]"};if(!b.isArguments(arguments))b.isArguments=function(a){return!(!a||!m.call(a,"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};
-b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.noConflict=function(){s._=G;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e/g,">").replace(/"/g,""").replace(/'/g,"'").replace(/\//g,"/")};b.mixin=function(a){j(b.functions(a),function(c){J(c,b[c]=
-a[c])})};var K=0;b.uniqueId=function(a){var b=K++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var u=/.^/;b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape||u,function(a,b){return"',_.escape("+b.replace(/\\'/g,"'")+"),'"}).replace(d.interpolate||u,function(a,b){return"',"+b.replace(/\\'/g,
-"'")+",'"}).replace(d.evaluate||u,function(a,b){return"');"+b.replace(/\\'/g,"'").replace(/[\r\n\t]/g," ").replace(/\\\\/g,"\\")+";__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",e=new Function("obj","_",d);return c?e(c,b):function(a){return e.call(this,a,b)}};b.chain=function(a){return b(a).chain()};var n=function(a){this._wrapped=a};b.prototype=n.prototype;var v=function(a,c){return c?b(a).chain():a},J=function(a,c){n.prototype[a]=function(){var a=
-i.call(arguments);H.call(a,this._wrapped);return v(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];n.prototype[a]=function(){var d=this._wrapped;b.apply(d,arguments);var e=d.length;(a=="shift"||a=="splice")&&e===0&&delete d[0];return v(d,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];n.prototype[a]=function(){return v(b.apply(this._wrapped,arguments),this._chain)}});n.prototype.chain=function(){this._chain=
-true;return this};n.prototype.value=function(){return this._wrapped}}).call(this);
+(function(){function q(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual&&b.isFunction(a.isEqual))return a.isEqual(c);if(c.isEqual&&b.isFunction(c.isEqual))return c.isEqual(a);var e=l.call(a);if(e!=l.call(c))return false;switch(e){case "[object String]":return a==String(c);case "[object Number]":return a!=+a?c!=+c:a==0?1/a==1/c:a==+c;case "[object Date]":case "[object Boolean]":return+a==+c;case "[object RegExp]":return a.source==
+c.source&&a.global==c.global&&a.multiline==c.multiline&&a.ignoreCase==c.ignoreCase}if(typeof a!="object"||typeof c!="object")return false;for(var f=d.length;f--;)if(d[f]==a)return true;d.push(a);var f=0,g=true;if(e=="[object Array]"){if(f=a.length,g=f==c.length)for(;f--;)if(!(g=f in a==f in c&&q(a[f],c[f],d)))break}else{if("constructor"in a!="constructor"in c||a.constructor!=c.constructor)return false;for(var h in a)if(b.has(a,h)&&(f++,!(g=b.has(c,h)&&q(a[h],c[h],d))))break;if(g){for(h in c)if(b.has(c,
+h)&&!f--)break;g=!f}}d.pop();return g}var r=this,G=r._,n={},k=Array.prototype,o=Object.prototype,i=k.slice,H=k.unshift,l=o.toString,I=o.hasOwnProperty,w=k.forEach,x=k.map,y=k.reduce,z=k.reduceRight,A=k.filter,B=k.every,C=k.some,p=k.indexOf,D=k.lastIndexOf,o=Array.isArray,J=Object.keys,s=Function.prototype.bind,b=function(a){return new m(a)};if(typeof exports!=="undefined"){if(typeof module!=="undefined"&&module.exports)exports=module.exports=b;exports._=b}else r._=b;b.VERSION="1.3.1";var j=b.each=
+b.forEach=function(a,c,d){if(a!=null)if(w&&a.forEach===w)a.forEach(c,d);else if(a.length===+a.length)for(var e=0,f=a.length;e2;a==
+null&&(a=[]);if(y&&a.reduce===y)return e&&(c=b.bind(c,e)),f?a.reduce(c,d):a.reduce(c);j(a,function(a,b,i){f?d=c.call(e,d,a,b,i):(d=a,f=true)});if(!f)throw new TypeError("Reduce of empty array with no initial value");return d};b.reduceRight=b.foldr=function(a,c,d,e){var f=arguments.length>2;a==null&&(a=[]);if(z&&a.reduceRight===z)return e&&(c=b.bind(c,e)),f?a.reduceRight(c,d):a.reduceRight(c);var g=b.toArray(a).reverse();e&&!f&&(c=b.bind(c,e));return f?b.reduce(g,c,d,e):b.reduce(g,c)};b.find=b.detect=
+function(a,c,b){var e;E(a,function(a,g,h){if(c.call(b,a,g,h))return e=a,true});return e};b.filter=b.select=function(a,c,b){var e=[];if(a==null)return e;if(A&&a.filter===A)return a.filter(c,b);j(a,function(a,g,h){c.call(b,a,g,h)&&(e[e.length]=a)});return e};b.reject=function(a,c,b){var e=[];if(a==null)return e;j(a,function(a,g,h){c.call(b,a,g,h)||(e[e.length]=a)});return e};b.every=b.all=function(a,c,b){var e=true;if(a==null)return e;if(B&&a.every===B)return a.every(c,b);j(a,function(a,g,h){if(!(e=
+e&&c.call(b,a,g,h)))return n});return e};var E=b.some=b.any=function(a,c,d){c||(c=b.identity);var e=false;if(a==null)return e;if(C&&a.some===C)return a.some(c,d);j(a,function(a,b,h){if(e||(e=c.call(d,a,b,h)))return n});return!!e};b.include=b.contains=function(a,c){var b=false;if(a==null)return b;return p&&a.indexOf===p?a.indexOf(c)!=-1:b=E(a,function(a){return a===c})};b.invoke=function(a,c){var d=i.call(arguments,2);return b.map(a,function(a){return(b.isFunction(c)?c||a:a[c]).apply(a,d)})};b.pluck=
+function(a,c){return b.map(a,function(a){return a[c]})};b.max=function(a,c,d){if(!c&&b.isArray(a))return Math.max.apply(Math,a);if(!c&&b.isEmpty(a))return-Infinity;var e={computed:-Infinity};j(a,function(a,b,h){b=c?c.call(d,a,b,h):a;b>=e.computed&&(e={value:a,computed:b})});return e.value};b.min=function(a,c,d){if(!c&&b.isArray(a))return Math.min.apply(Math,a);if(!c&&b.isEmpty(a))return Infinity;var e={computed:Infinity};j(a,function(a,b,h){b=c?c.call(d,a,b,h):a;bd?1:0}),"value")};b.groupBy=function(a,c){var d={},e=b.isFunction(c)?c:function(a){return a[c]};j(a,function(a,b){var c=e(a,b);(d[c]||(d[c]=[])).push(a)});return d};b.sortedIndex=function(a,
+c,d){d||(d=b.identity);for(var e=0,f=a.length;e>1;d(a[g])=0})})};b.difference=function(a){var c=b.flatten(i.call(arguments,1));return b.filter(a,function(a){return!b.include(c,a)})};b.zip=function(){for(var a=i.call(arguments),c=b.max(b.pluck(a,"length")),d=Array(c),e=0;e=0;d--)b=[a[d].apply(this,b)];return b[0]}};
+b.after=function(a,b){return a<=0?b():function(){if(--a<1)return b.apply(this,arguments)}};b.keys=J||function(a){if(a!==Object(a))throw new TypeError("Invalid object");var c=[],d;for(d in a)b.has(a,d)&&(c[c.length]=d);return c};b.values=function(a){return b.map(a,b.identity)};b.functions=b.methods=function(a){var c=[],d;for(d in a)b.isFunction(a[d])&&c.push(d);return c.sort()};b.extend=function(a){j(i.call(arguments,1),function(b){for(var d in b)a[d]=b[d]});return a};b.defaults=function(a){j(i.call(arguments,
+1),function(b){for(var d in b)a[d]==null&&(a[d]=b[d])});return a};b.clone=function(a){return!b.isObject(a)?a:b.isArray(a)?a.slice():b.extend({},a)};b.tap=function(a,b){b(a);return a};b.isEqual=function(a,b){return q(a,b,[])};b.isEmpty=function(a){if(b.isArray(a)||b.isString(a))return a.length===0;for(var c in a)if(b.has(a,c))return false;return true};b.isElement=function(a){return!!(a&&a.nodeType==1)};b.isArray=o||function(a){return l.call(a)=="[object Array]"};b.isObject=function(a){return a===Object(a)};
+b.isArguments=function(a){return l.call(a)=="[object Arguments]"};if(!b.isArguments(arguments))b.isArguments=function(a){return!(!a||!b.has(a,"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};
+b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.has=function(a,b){return I.call(a,b)};b.noConflict=function(){r._=G;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e/g,">").replace(/"/g,""").replace(/'/g,"'").replace(/\//g,"/")};b.mixin=function(a){j(b.functions(a),
+function(c){K(c,b[c]=a[c])})};var L=0;b.uniqueId=function(a){var b=L++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var t=/.^/,u=function(a){return a.replace(/\\\\/g,"\\").replace(/\\'/g,"'")};b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape||t,function(a,b){return"',_.escape("+
+u(b)+"),'"}).replace(d.interpolate||t,function(a,b){return"',"+u(b)+",'"}).replace(d.evaluate||t,function(a,b){return"');"+u(b).replace(/[\r\n\t]/g," ")+";__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",e=new Function("obj","_",d);return c?e(c,b):function(a){return e.call(this,a,b)}};b.chain=function(a){return b(a).chain()};var m=function(a){this._wrapped=a};b.prototype=m.prototype;var v=function(a,c){return c?b(a).chain():a},K=function(a,c){m.prototype[a]=
+function(){var a=i.call(arguments);H.call(a,this._wrapped);return v(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];m.prototype[a]=function(){var d=this._wrapped;b.apply(d,arguments);var e=d.length;(a=="shift"||a=="splice")&&e===0&&delete d[0];return v(d,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];m.prototype[a]=function(){return v(b.apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=
+true;return this};m.prototype.value=function(){return this._wrapped}}).call(this);
diff --git a/underscore.js b/underscore.js
index 6687ded01..208d4cd89 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-//     Underscore.js 1.3.0
+//     Underscore.js 1.3.1
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore is freely distributable under the MIT license.
 //     Portions of Underscore are inspired or borrowed from Prototype,
@@ -62,7 +62,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.3.0';
+  _.VERSION = '1.3.1';
 
   // Collection Functions
   // --------------------