Created
October 30, 2014 00:17
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Hash Sieve in CoffeeScript
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| # | |
| # Implementation of hash sieve algorithm that I read | |
| # about at http://www.shamasis.net/2009/09/fast-algorithm-to-find-unique-items-in-javascript-array/ | |
| # in CoffeeScript with slightly more literate code :) | |
| # | |
| Array.prototype.unique = -> | |
| hashSieve = {} | |
| arrayOfUniqueValues = []; | |
| for item in @ | |
| hashSieve[item] = item | |
| for item of hashSieve | |
| arrayOfUniqueValues.push item | |
| return arrayOfUniqueValues | |
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(For quickly reducing an array to unique values.)