Created
June 28, 2020 12:44
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JavaScript Memoization Example for Reducing the Time Complexity
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| const veryComplexCalculation = (n) => (n * 10); | |
| const memoize = (cb) => { | |
| const cache = {}; | |
| return (n) => { | |
| if (n in cache) { | |
| console.log('Retrieving from cache:', n); | |
| return cache[n]; | |
| } else { | |
| console.log('Calculating ...'); | |
| const result = cb(n); | |
| cache[n] = result; | |
| return result; | |
| } | |
| } | |
| } | |
| // (invoking) | |
| const memoized = memoize(veryComplexCalculation); | |
| try { | |
| console.log('Returning Calculated value:', memoized(9)); // calculated | |
| console.log('Returning Cached value:', memoized(9)); // cached | |
| } catch (e) { | |
| console.error('Error: ', e) | |
| } |
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