Created
March 11, 2016 13:10
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| type poly = Wrap : 'a key * 'a value -> poly | |
| let rec map f = function | |
| | Nil -> Nil | |
| | Cons (k, v, rest) -> | |
| let Wrap (k', v') = f.f k v in | |
| Cons (k', v', map f rest) |
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