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view interps/rhotor/Uniqs.hs @ 1023:cfba1cba7259
<oerjan> addquote [after discussing lens] <hagb4rd> they seem to be the fashion of this winter <GreyKnight> hagb4rd is wearing this season\'s Lens, a stunning little ensemble with functor trim
author | HackBot |
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date | Mon, 10 Dec 2012 23:24:13 +0000 |
parents | 859f9b4339e6 |
children |
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module Uniqs ( Uniqs(Root, A, B, C) ) where data Uniqs = A Uniqs | B Uniqs | C Uniqs | Root instance Eq Uniqs where (==) Root Root = True (==) (A a) (A b) = a == b (==) (B a) (B b) = a == b (==) (C a) (C b) = a == b (==) _ _ = False (/=) a b = not (a == b) instance Show Uniqs where show Root = "R" show (A b) = 'A':show b show (B b) = 'B':show b show (C b) = 'C':show b