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Make fundep in the example make sense

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This commit is contained in:
Andrzej Rybczak 2023-09-14 01:08:38 +02:00
parent 6e61d38224
commit 5d677d51d7
1 changed files with 2 additions and 2 deletions
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4
effectful-core/src/Effectful/Dispatch/Dynamic.hs
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@ -357,7 +357,7 @@ import Effectful.Internal.Utils
-- >>> :set -XFunctionalDependencies -- >>> :set -XFunctionalDependencies
-- --
-- >>> :{ -- >>> :{
-- class Monad m => MonadInput i m | i -> m where -- class Monad m => MonadInput i m | m -> i where
-- input :: m i -- input :: m i
-- :} -- :}
-- --
@ -371,7 +371,7 @@ import Effectful.Internal.Utils
-- ... -- ...
-- ...Illegal instance declaration for ‘MonadInput i (Eff es)’... -- ...Illegal instance declaration for ‘MonadInput i (Eff es)’...
-- ... The liberal coverage condition fails in class ‘MonadInput’... -- ... The liberal coverage condition fails in class ‘MonadInput’...
-- ... for functional dependency: ‘i -> m’... -- ... for functional dependency: ‘m -> i’...
-- ... -- ...
-- --
-- However, there exists a [dirty -- However, there exists a [dirty