Created
August 19, 2014 15:16
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CoffeeScript AND between two arrays
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| array_and = (ary1, ary2) -> | |
| result = [] | |
| seen = {} | |
| i = 0 | |
| length = ary1.length | |
| while i < length | |
| item = ary1[i] | |
| unless seen[item] | |
| j = 0 | |
| length2 = ary2.length | |
| while j < length2 | |
| item2 = ary2[j] | |
| if not seen[item2] and (item is item2) | |
| seen[item] = true | |
| result.push item | |
| j++ | |
| i++ | |
| result |
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