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[project @ 1996-01-08 20:28:12 by partain]
[ghc-hetmet.git]
/
ghc
/
compiler
/
tests
/
typecheck
/
should_succeed
/
tc058.hs
1
module ShouldSucceed where
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class Eq2 a where
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doubleeq :: a -> a -> Bool
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class (Eq2 a) => Ord2 a where
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lt :: a -> a -> Bool
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instance Eq2 Int where
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doubleeq x y = True
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instance Ord2 Int where
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lt x y = True
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instance (Eq2 a,Ord2 a) => Eq2 [a] where
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doubleeq xs ys = True
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f x y = doubleeq x [1]