Lost MonadFix instances

9 Aug
2018
9 Aug
'18
2:33 a.m.
instance MonadFix Down where mfix f = Down (fix (\x -> let Down x' = f x in x' )) instance MonadFix Proxy where mfix _ = Proxy instance MonadFix U1 where mfix _ = U1 instance MonadFix Complex where mfix f = fix (realPart . f) :+ fix (imagPart . f)
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