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August 29, 2015 14:09
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| var cache = {}; | |
| function checkCache(key){ | |
| if(cache[key]){ | |
| return cache[key]; | |
| } else { | |
| // do some long/expensive action | |
| // ex: calculation, ajax, etc... | |
| cache[key] = Math.random(); | |
| return cache[key]; | |
| } | |
| } |
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