kino/src/Misc.hs

19 lines
352 B
Haskell

{-|
Module : Misc
Description : Contains miscelaneous helper functions which do not fit elsewhere
-}
module Misc where
infixl 3 !?
-- | Safe version of (!!)
(!?) :: [a] -> Int -> Maybe a
[] !? i = Nothing
(x:xs) !? 0 = Just x
(x:xs) !? n = xs !? (n-1)
infixl 0 $>
-- | Backwards function application
($>) :: a -> (a -> b) -> b
x $> f = f x