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instance Category cat => Semigroup (Join cat a) where Join f <> Join g = Join (f . g) instance Category cat => Monoid (Join cat a) where mempty = Join id mappend = (<>)
This allows deriving Monoid (Kleisli m a a) and
Monoid (Kleisli m a a)
newtype Endo a = Endo { appEndo :: Join (->) a } deriving (Semigroup, Monoid)
The text was updated successfully, but these errors were encountered:
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This allows deriving
Monoid (Kleisli m a a)
andThe text was updated successfully, but these errors were encountered: