Created
March 5, 2012 09:07
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folding over two lists
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| fold2r :: (a -> b -> c -> c) -> c -> [a] -> [b] -> c | |
| fold2r f seed (a:as) (b:bs) = f a b (fold2r f seed as bs) | |
| fold2r _ seed _ _ = seed | |
| zipWithFold2r f = fold2r (\a b c -> (f a b):c) [] |
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