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Add proofs of functor-laws on delta
author Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
date Fri, 13 Feb 2015 17:13:23 +0900
parents 086fc8bb6ea9
children
line wrap: on
line source

*Main> let x = 100 :: Int
*Main> let even = even :: Int -> Bool
*Main> :type x
x :: Int
*Main> :type even
even :: Int -> Bool
*Main> :type (even x)
(even x) :: Bool

*Main> let list = Cons x Nil
*Main> :type list
list :: List Int
*Main> :type fmap even list
fmap even list :: List Bool