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Adding the ability to _.sortBy(list, 'property')

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Yi, EungJun
2012-03-31 02:27:49 +09:00
parent 00ed5d70c8
commit 6b8a99ba39
2 changed files with 6 additions and 1 deletions
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4
test/collections.js
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@@ -235,6 +235,10 @@ $(document).ready(function() {
var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}]; var people = [{name : 'curly', age : 50}, {name : 'moe', age : 30}];
people = _.sortBy(people, function(person){ return person.age; }); people = _.sortBy(people, function(person){ return person.age; });
equal(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age'); equal(_.pluck(people, 'name').join(', '), 'moe, curly', 'stooges sorted by age');
var list = ["one", "two", "three", "four", "five"];
var sorted = _.sortBy(list, 'length');
equal(sorted.join(' '), 'one two four five three', 'sorted by length');
}); });
test('collections: groupBy', function() { test('collections: groupBy', function() {

3
underscore.js
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@@ -262,7 +262,8 @@
}; };
// Sort the object's values by a criterion produced by an iterator. // Sort the object's values by a criterion produced by an iterator.
_.sortBy = function(obj, iterator, context) { _.sortBy = function(obj, val, context) {
var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
return _.pluck(_.map(obj, function(value, index, list) { return _.pluck(_.map(obj, function(value, index, list) {
return { return {
value : value, value : value,