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1HaskellADay 2014/04/08
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| -- http://lpaste.net/revision/3166527577426755584 | |
| import Data.Monoid | |
| replicateF :: Int -> (a -> a) -> a -> a | |
| replicateF n = ((flip (!!) n . ) . iterate) | |
| replicateF' :: Int -> (a -> a) -> a -> a | |
| replicateF' n = appEndo . mconcat . replicate n . Endo | |
| main = do | |
| print $ replicateF 10 (*2) 1 | |
| print $ replicateF' 10 (*2) 1 |
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