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Merge pull request #433 from petejkim/master

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added "collect" alias for "map"
This commit is contained in:
Jeremy Ashkenas
2012-01-13 09:01:23 -08:00
parent dd09162b8c 978255b778
commit 9c88b72362
2 changed files with 4 additions and 1 deletions
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3
test/collections.js
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@@ -35,6 +35,9 @@ $(document).ready(function() {
var doubled = _.map([1, 2, 3], function(num){ return num * 2; }); var doubled = _.map([1, 2, 3], function(num){ return num * 2; });
equals(doubled.join(', '), '2, 4, 6', 'doubled numbers'); equals(doubled.join(', '), '2, 4, 6', 'doubled numbers');
doubled = _.collect([1, 2, 3], function(num){ return num * 2; });
equals(doubled.join(', '), '2, 4, 6', 'aliased as "collect"');
var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3}); var tripled = _.map([1, 2, 3], function(num){ return num * this.multiplier; }, {multiplier : 3});
equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context'); equals(tripled.join(', '), '3, 6, 9', 'tripled numbers with context');

2
underscore.js
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@@ -89,7 +89,7 @@
// 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. // Delegates to **ECMAScript 5**'s native `map` if available.
_.map = function(obj, iterator, context) { _.map = _.collect = function(obj, iterator, context) {
var results = []; var results = [];
if (obj == null) return results; if (obj == null) return results;
if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);