Created
January 12, 2017 17:30
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| mapM' :: Monad m => (a -> m b) -> [a] -> m [b] | |
| mapM' _ [] = return [] | |
| mapM' f (x : xs) = do | |
| y <- f x | |
| ys <- mapM' f xs | |
| return (y : ys) | |
| mapM'' :: Monad m => (a -> m b) -> [a] -> m [b] | |
| mapM'' _ [] = return [] | |
| mapM'' f (x : xs) = | |
| f x >>= \y -> | |
| mapM'' f xs >>= \ys -> | |
| return (y : ys) |
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