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author | HackEso <hackeso@esolangs.org> |
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date | Fri, 13 Apr 2018 15:38:44 +0100 |
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