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25 lines
656 B
25 lines
656 B
define(function () {
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// An internal function for creating assigner functions.
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function createAssigner(keysFunc, defaults) {
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return function(obj) {
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var length = arguments.length;
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if (defaults) obj = Object(obj);
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if (length < 2 || obj == null) return obj;
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for (var index = 1; index < length; index++) {
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var source = arguments[index],
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keys = keysFunc(source),
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l = keys.length;
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for (var i = 0; i < l; i++) {
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var key = keys[i];
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if (!defaults || obj[key] === void 0) obj[key] = source[key];
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}
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}
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return obj;
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};
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}
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return createAssigner;
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});
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