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<moon__> mkx bin/hfs//erro \'You have discovered an eerie cavern. The air aboe the dar kstone floor is alive ith vortices of purple light and dark, boiling clouds. Seemingly bottemless pits mark the surface. "$1" stand below\'
author HackBot
date Sat, 07 May 2016 18:36:03 +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