Underscore.js 1.4.2
http://underscorejs.org
(c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
Underscore may be freely distributed under the MIT license.
@@ -34,9 +34,10 @@
exports._=_;}else{root['_']=_;
- }
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.
Return all the elements for which a truth test fails.
_.reject=function(obj,iterator,context){varresults=[];
+ if(obj==null)returnresults;each(obj,function(value,index,list){if(!iterator.call(context,value,index,list))results[results.length]=value;});
@@ -127,6 +133,7 @@
Aliased as all.
_.every=_.all=function(obj,iterator,context){iterator||(iterator=_.identity);varresult=true;
+ if(obj==null)returnresult;if(nativeEvery&&obj.every===nativeEvery)returnobj.every(iterator,context);each(obj,function(value,index,list){if(!(result=result&&iterator.call(context,value,index,list)))returnbreaker;
@@ -137,6 +144,7 @@
Aliased as any.
Determine if the array or object contains a given value (using ===).
Aliased as include.
_.contains=_.include=function(obj,target){varfound=false;
+ if(obj==null)returnfound;if(nativeIndexOf&&obj.indexOf===nativeIndexOf)returnobj.indexOf(target)!=-1;found=any(obj,function(value){returnvalue===target;
@@ -346,6 +355,7 @@
Delegates to ECMAScript 5's native indexOf if available.
If the array is large and already in sort order, pass true
for isSorted to use binary search.
"Sparse" arrays are no longer supported in Underscore iteration
- functions. Use a for instead (or better yet, an object).
+ functions. Use a for loop instead (or better yet, an object).
The min and max functions may now be called on
@@ -1809,8 +1820,8 @@
Change Log
undefined as the empty string.
- Underscore iteration functions no longer accept null values
- as a no-op argument. You'll get an early error instead.
+ Underscore iteration functions no longer accept null values
+ as a no-op argument. You'll get an early error instead.
A number of edge-cases fixes and tweaks, which you can spot in the
diff --git a/package.json b/package.json
index 2858dd4ce..849d81783 100644
--- a/package.json
+++ b/package.json
@@ -6,5 +6,5 @@
"author" : "Jeremy Ashkenas ",
"repository" : {"type": "git", "url": "git://github.com/documentcloud/underscore.git"},
"main" : "underscore.js",
- "version" : "1.4.1"
+ "version" : "1.4.2"
}
diff --git a/test/arrays.js b/test/arrays.js
index 1ab33d8f7..a757ced67 100644
--- a/test/arrays.js
+++ b/test/arrays.js
@@ -144,6 +144,7 @@ $(document).ready(function() {
equal(_.indexOf(numbers, 2), 1, 'can compute indexOf, even without the native function');
var result = (function(){ return _.indexOf(arguments, 2); })(1, 2, 3);
equal(result, 1, 'works on an arguments object');
+ equal(_.indexOf(null, 2), -1, 'handles nulls properly');
var numbers = [10, 20, 30, 40, 50], num = 35;
var index = _.indexOf(numbers, num, true);
@@ -172,6 +173,7 @@ $(document).ready(function() {
equal(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element');
var result = (function(){ return _.lastIndexOf(arguments, 1); })(1, 0, 1, 0, 0, 1, 0, 0, 0);
equal(result, 5, 'works on an arguments object');
+ equal(_.indexOf(null, 2), -1, 'handles nulls properly');
numbers = [1, 2, 3, 1, 2, 3, 1, 2, 3];
index = _.lastIndexOf(numbers, 2, 2);
diff --git a/test/collections.js b/test/collections.js
index 095ace1d3..efc5723d4 100644
--- a/test/collections.js
+++ b/test/collections.js
@@ -25,6 +25,10 @@ $(document).ready(function() {
answer = null;
_.each([1, 2, 3], function(num, index, arr){ if (_.include(arr, num)) answer = true; });
ok(answer, 'can reference the original collection from inside the iterator');
+
+ answers = 0;
+ _.each(null, function(){ ++answers; });
+ equal(answers, 0, 'handles a null properly');
});
test('map', function() {
@@ -50,6 +54,9 @@ $(document).ready(function() {
var ids = _.map(document.images, function(n){ return n.id; });
ok(ids[0] == 'chart_image', 'can use collection methods on HTMLCollections');
+
+ var ifnull = _.map(null, function(){});
+ ok(_.isArray(ifnull) && ifnull.length === 0, 'handles a null properly');
});
test('reduce', function() {
@@ -69,6 +76,15 @@ $(document).ready(function() {
var sum = _.reduce([1, 2, 3], function(sum, num){ return sum + num; });
equal(sum, 6, 'default initial value');
+ var ifnull;
+ try {
+ _.reduce(null, function(){});
+ } catch (ex) {
+ ifnull = ex;
+ }
+ ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
+ ok(_.reduce(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
equal(_.reduce([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
raises(function() { _.reduce([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
});
@@ -83,9 +99,19 @@ $(document).ready(function() {
var list = _.foldr(["foo", "bar", "baz"], function(memo, str){ return memo + str; });
equal(list, 'bazbarfoo', 'default initial value');
+ var ifnull;
+ try {
+ _.reduceRight(null, function(){});
+ } catch (ex) {
+ ifnull = ex;
+ }
+ ok(ifnull instanceof TypeError, 'handles a null (without inital value) properly');
+
var sum = _.reduceRight({a: 1, b: 2, c: 3}, function(sum, num){ return sum + num; });
equal(sum, 6, 'default initial value on object');
+ ok(_.reduceRight(null, function(){}, 138) === 138, 'handles a null (with initial value) properly');
+
equal(_.reduceRight([], function(){}, undefined), undefined, 'undefined can be passed as a special case');
raises(function() { _.reduceRight([], function(){}); }, TypeError, 'throws an error for empty arrays with no initial value');
diff --git a/underscore-min.js b/underscore-min.js
index e617fe871..ad3a39ad8 100644
--- a/underscore-min.js
+++ b/underscore-min.js
@@ -1,5 +1,5 @@
-// Underscore.js 1.4.1
+// Underscore.js 1.4.2
// http://underscorejs.org
// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
// Underscore may be freely distributed under the MIT license.
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T.isFunction(n)?n.call(e):n},T.mixin=function(e){N(T.functions(e),function(t){var n=T[t]=e[t];T.prototype[t]=function(){var e=[this._wrapped];return o.apply(e,arguments),F.call(this,n.apply(T,e))}})};var P=0;T.uniqueId=function(e){var t=P++;return e?e+t:t},T.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var H=/(.)^/,B={"'":"'","\\":"\\","\r":"r","\n":"n"," ":"t","\u2028":"u2028","\u2029":"u2029"},j=/\\|'|\r|\n|\t|\u2028|\u2029/g;T.template=function(e,t,n){n=T.defaults({},n,T.templateSettings);var r=new RegExp([(n.escape||H).source,(n.interpolate||H).source,(n.evaluate||H).source].join("|")+"|$","g"),i=0,s="__p+='";e.replace(r,function(t,n,r,o,u){s+=e.slice(i,u).replace(j,function(e){return"\\"+B[e]}),s+=n?"'+\n((__t=("+n+"))==null?'':_.escape(__t))+\n'":r?"'+\n((__t=("+r+"))==null?'':__t)+\n'":o?"';\n"+o+"\n__p+='":"",i=u+t.length}),s+="';\n",n.variable||(s="with(obj||{}){\n"+s+"}\n"),s="var 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\ No newline at end of file
diff --git a/underscore.js b/underscore.js
index 2ab97e902..1ebe2671b 100644
--- a/underscore.js
+++ b/underscore.js
@@ -1,4 +1,4 @@
-// Underscore.js 1.4.1
+// Underscore.js 1.4.2
// http://underscorejs.org
// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
// Underscore may be freely distributed under the MIT license.
@@ -65,7 +65,7 @@
}
// Current version.
- _.VERSION = '1.4.1';
+ _.VERSION = '1.4.2';
// Collection Functions
// --------------------
@@ -74,6 +74,7 @@
// 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 (obj.length === +obj.length) {
@@ -93,6 +94,7 @@
// 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);
each(obj, function(value, index, list) {
results[results.length] = iterator.call(context, value, index, list);
@@ -104,6 +106,7 @@
// or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
_.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
+ if (obj == null) obj = [];
if (nativeReduce && obj.reduce === nativeReduce) {
if (context) iterator = _.bind(iterator, context);
return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
@@ -124,6 +127,7 @@
// Delegates to **ECMAScript 5**'s native `reduceRight` if available.
_.reduceRight = _.foldr = function(obj, iterator, memo, context) {
var initial = arguments.length > 2;
+ if (obj == null) obj = [];
if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
if (context) iterator = _.bind(iterator, context);
return arguments.length > 2 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
@@ -163,6 +167,7 @@
// Aliased as `select`.
_.filter = _.select = function(obj, iterator, context) {
var results = [];
+ if (obj == null) return results;
if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
each(obj, function(value, index, list) {
if (iterator.call(context, value, index, list)) results[results.length] = value;
@@ -173,6 +178,7 @@
// Return all the elements for which a truth test fails.
_.reject = function(obj, iterator, context) {
var results = [];
+ if (obj == null) return results;
each(obj, function(value, index, list) {
if (!iterator.call(context, value, index, list)) results[results.length] = value;
});
@@ -185,6 +191,7 @@
_.every = _.all = function(obj, iterator, context) {
iterator || (iterator = _.identity);
var result = true;
+ if (obj == null) return result;
if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
each(obj, function(value, index, list) {
if (!(result = result && iterator.call(context, value, index, list))) return breaker;
@@ -198,6 +205,7 @@
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 (result || (result = iterator.call(context, value, index, list))) return breaker;
@@ -209,6 +217,7 @@
// Aliased as `include`.
_.contains = _.include = function(obj, target) {
var found = false;
+ if (obj == null) return found;
if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
found = any(obj, function(value) {
return value === target;
@@ -500,6 +509,7 @@
// If the array is large and already in sort order, pass `true`
// for **isSorted** to use binary search.
_.indexOf = function(array, item, isSorted) {
+ if (array == null) return -1;
var i = 0, l = array.length;
if (isSorted) {
if (typeof isSorted == 'number') {
@@ -516,6 +526,7 @@
// Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
_.lastIndexOf = function(array, item, from) {
+ if (array == null) return -1;
var hasIndex = from != null;
if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);