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Sandy Maguire 2019-03-20 00:39:13 -04:00
parent c059127810
commit e1061999a1
1 changed files with 2 additions and 0 deletions
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src/Polysemy/Error.hs
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@ -40,6 +40,7 @@ instance Effect (Error e) where
throw :: Member (Error e) r => e -> Semantic r a
throw = send . Throw
{-# INLINE throw #-}
catch
@ -48,6 +49,7 @@ catch
-> (e -> Semantic r a)
-> Semantic r a
catch try handle = send $ Catch try handle id
{-# INLINE catch #-}
runError :: Semantic (Error e ': r) a -> Semantic r (Either e a)