category-extras-0.52.0: Various modules and constructs inspired by category theory Source code Contents Index

Control.Morphism.Apo Portability non-portable (rank-2 polymorphism) Stability experimental Maintainer Edward Kmett <ekmett@gmail.com>

Description

Traditional operators, shown here to show how to roll your own

Documentation

apo :: Functor f => GCoalgebra f (Apo f) a -> a -> FixF f Source

type Apo f a = Either (FixF f) a Source

type ApoT f m a = EitherT (FixF f) m a Source

distApoT :: (Functor f, Monad m) => Dist m f -> Dist (ApoT f m) f Source

g_apo :: Functor f => Coalgebra f b -> GCoalgebra f (GApo b) a -> a -> FixF f Source

type GApo b a = Either b a Source

type GApoT b m a = EitherT b m a Source

distGApo :: Functor f => Coalgebra f b -> Dist (Either b) f Source

distGApoT :: (Functor f, Monad m) => GCoalgebra f m b -> Dist m f -> Dist (EitherT b m) f Source

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