keyComparator function
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<html>
<head>
<script type="text/javascript" src="MochiKit-1.4.2/lib/MochiKit/Base.js"></script>
<script type="text/javascript" src="MochiKit-1.4.2/lib/MochiKit/Iter.js"></script>
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<script type="text/javascript" src="MochiKit-1.4.2/lib/MochiKit/Iter.js"></script>
</head>
<body>
<pre id="test">
<script type="text/javascript">
var rval = [];
alert( compare(sorted([3, 2, 1]), [1, 2, 3]) );
rval = sorted(["aaa", "bb", "c"], keyComparator("length"));
alert(compare(rval, ["c", "bb", "aaa"]));
</script>
</pre>
</body>
</html>
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