Created
May 12, 2017 13:00
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haskell implementation of simpath: Common
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| module Simpath.Common where | |
| justIf :: Bool -> a -> Maybe a | |
| justIf b a = if b then Just a else Nothing | |
| mapOrElse :: (a -> b) -> b -> Maybe a -> b | |
| mapOrElse f b ma = case ma of { Just a -> f a; _ -> b } |
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