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view src/list.hs @ 57:5f0e13923cfd

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Fixes
author Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
date Mon, 16 Feb 2015 16:24:42 +0900
parents 086fc8bb6ea9
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data List a = Nil | Cons a (List a) deriving (Show)

instance Functor List where
    fmap f Nil = Nil
    fmap f (Cons x xs) = Cons (f x) (fmap f xs)