[Haskell-cafe] f^n for functional iteration

Danny Gratzer danny.gratzer at gmail.com
Thu Dec 12 03:48:32 UTC 2013

This seems to work

{-# LANGUAGE FlexibleInstances #-}
instance Num (a -> a) where
  (*) = (.)

Of course, using anything else from the Num class will blow up in your face
so it's probably not worth it.

Danny Gratzer
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