Copyright	(C) 2015 Edward Kmett
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	experimental
Portability	non-portable, MPTCs, fundeps
Safe Haskell	Safe
Language	Haskell2010

Data.Profunctor.Adjunction

Description

Synopsis

class (ProfunctorFunctor f, ProfunctorFunctor u) => ProfunctorAdjunction f u | f -> u, u -> f where
- unit :: Profunctor p => p :-> u (f p)
- counit :: Profunctor p => f (u p) :-> p

Documentation

class (ProfunctorFunctor f, ProfunctorFunctor u) => ProfunctorAdjunction f u | f -> u, u -> f where Source #

Laws:

unit . counit ≡ id
counit . unit ≡ id

Methods

unit :: Profunctor p => p :-> u (f p) Source #

counit :: Profunctor p => f (u p) :-> p Source #

Instances

ProfunctorAdjunction Copastro Cotambara Source #
Instance details Defined in Data.Profunctor.Strong Methods unit :: Profunctor p => p :-> Cotambara (Copastro p) Source # counit :: Profunctor p => Copastro (Cotambara p) :-> p Source #
ProfunctorAdjunction Pastro Tambara Source #
Instance details Defined in Data.Profunctor.Strong Methods unit :: Profunctor p => p :-> Tambara (Pastro p) Source # counit :: Profunctor p => Pastro (Tambara p) :-> p Source #
ProfunctorAdjunction Environment Closure Source #
Instance details Defined in Data.Profunctor.Closed Methods unit :: Profunctor p => p :-> Closure (Environment p) Source # counit :: Profunctor p => Environment (Closure p) :-> p Source #
ProfunctorAdjunction CopastroSum CotambaraSum Source #
Instance details Defined in Data.Profunctor.Choice Methods unit :: Profunctor p => p :-> CotambaraSum (CopastroSum p) Source # counit :: Profunctor p => CopastroSum (CotambaraSum p) :-> p Source #
ProfunctorAdjunction PastroSum TambaraSum Source #
Instance details Defined in Data.Profunctor.Choice Methods unit :: Profunctor p => p :-> TambaraSum (PastroSum p) Source # counit :: Profunctor p => PastroSum (TambaraSum p) :-> p Source #
ProfunctorAdjunction (Procompose p :: (Type -> Type -> Type) -> Type -> Type -> Type) (Rift p :: (Type -> Type -> Type) -> Type -> Type -> Type) Source #
Instance details Defined in Data.Profunctor.Composition Methods unit :: Profunctor p0 => p0 :-> Rift p (Procompose p p0) Source # counit :: Profunctor p0 => Procompose p (Rift p p0) :-> p0 Source #