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[project @ 1996-01-08 20:28:12 by partain]
[ghc-hetmet.git]
/
ghc
/
compiler
/
tests
/
typecheck
/
should_succeed
/
tc043.hs
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module ShouldSucceed where
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--!!! another simple test of class and instance code.
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class A a where
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op1 :: a
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instance A Int where
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op1 = 2
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f x = op1
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class B b where
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op2 :: b -> Int
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instance (B a) => B [a] where
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op2 [] = 0
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op2 (x:xs) = 1 + op2 xs