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18 lines
459 B
18 lines
459 B
define(['./_has'], function (_has) {
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// Memoize an expensive function by storing its results.
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function memoize(func, hasher) {
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var memoize = function(key) {
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var cache = memoize.cache;
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var address = '' + (hasher ? hasher.apply(this, arguments) : key);
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if (!_has(cache, address)) cache[address] = func.apply(this, arguments);
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return cache[address];
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};
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memoize.cache = {};
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return memoize;
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}
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return memoize;
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});
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