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Merge pull request #233 from chaoflow/master

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make toArray return a clone in case of an array
This commit is contained in:
Jeremy Ashkenas
2011-07-06 13:35:54 -07:00
parent 96dbdaf929 9ab3ac44bb
commit 0b52dfbbef
3 changed files with 23 additions and 19 deletions
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5
test/collections.js
View File

@@ -41,7 +41,7 @@ $(document).ready(function() {
var doubled = _([1, 2, 3]).map(function(num){ return num * 2; });
equals(doubled.join(', '), '2, 4, 6', 'OO-style doubled numbers');
var ids = _.map(document.body.childNodes, function(n){ return n.id; });
var ids = _.map($('div.underscore-test').children(), function(n){ return n.id; });
ok(_.include(ids, 'qunit-header'), 'can use collection methods on NodeLists');
var ids = _.map(document.images, function(n){ return n.id; });
@@ -197,6 +197,9 @@ $(document).ready(function() {
test('collections: toArray', function() {
ok(!_.isArray(arguments), 'arguments object is not an array');
ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
var a = [1,2,3];
ok(_.toArray(a) !== a, 'array is cloned');
equals(_.toArray(a).join(', '), '1, 2, 3', 'cloned array contains same elements');
var numbers = _.toArray({one : 1, two : 2, three : 3});
equals(numbers.join(', '), '1, 2, 3', 'object flattened into array');

35
test/test.html
View File

@@ -16,26 +16,27 @@
<script type="text/javascript" src="speed.js"></script>
</head>
<body>
<h1 id="qunit-header">Underscore Test Suite</h1>
<h2 id="qunit-banner"></h2>
<h2 id="qunit-userAgent"></h2>
<ol id="qunit-tests"></ol>
<br />
<h1 class="qunit-header">Underscore Speed Suite</h1>
<p>
A representative sample of the functions are benchmarked here, to provide
a sense of how fast they might run in different browsers.
Each iteration runs on an array of 1000 elements.<br /><br />
For example, the 'intersect' test measures the number of times you can
find the intersection of two thousand-element arrays in one second.
</p>
<br />
<div class="underscore-test">
<h1 id="qunit-header">Underscore Test Suite</h1>
<h2 id="qunit-banner"></h2>
<h2 id="qunit-userAgent"></h2>
<ol id="qunit-tests"></ol>
<br />
<h1 class="qunit-header">Underscore Speed Suite</h1>
<p>
A representative sample of the functions are benchmarked here, to provide
a sense of how fast they might run in different browsers.
Each iteration runs on an array of 1000 elements.<br /><br />
For example, the 'intersect' test measures the number of times you can
find the intersection of two thousand-element arrays in one second.
</p>
<br />
<script type="text/html" id="template">
<script type="text/html" id="template">
<%
if (data) { data += 12345; }; %>
<li><%= data %></li>
</script>
</script>
</div>
</body>
</html>

2
underscore.js
View File

@@ -278,7 +278,7 @@
_.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);
};