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rare shit
[fp1415.git]
/
fp2
/
week2
/
mart
/
oldold
/
old
/
StdMonad.dcl
1
definition module StdMonad
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class return c :: a -> c a
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class (>>=) infix 0 c :: (c a) (a -> c b) -> c b
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class fail c :: c a
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class Monad c | return, >>= c
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class MonadFail c | Monad, fail c