Created
June 6, 2012 04:41
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Array identify new content
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| Array.class_eval do | |
| def xy(arr2) | |
| arr1 = self.dup | |
| arr1, arr2 = arr2, arr1 if (arr1 <=> arr2) == 1 | |
| (arr1 + arr2) - (arr1) | |
| end | |
| end |
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from irb to gist! haha