Copyright	(C) 2008-2013 Edward Kmett
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	provisional
Portability	portable
Safe Haskell	Safe
Language	Haskell2010

Control.Comonad.Hoist.Class

Description

Documentation

class ComonadHoist t where #

Minimal complete definition

Methods

cohoist :: (Comonad w, Comonad v) => (forall x. w x -> v x) -> t w a -> t v a #

Given any comonad-homomorphism from w to v this yields a comonad homomorphism from t w to t v.

Instances

ComonadHoist (IdentityT *) #
Methods cohoist :: (Comonad w, Comonad v) => (forall x. w x -> v x) -> IdentityT * w a -> IdentityT * v a #
ComonadHoist (EnvT e) #
Methods cohoist :: (Comonad w, Comonad v) => (forall x. w x -> v x) -> EnvT e w a -> EnvT e v a #
ComonadHoist (StoreT s) #
Methods cohoist :: (Comonad w, Comonad v) => (forall x. w x -> v x) -> StoreT s w a -> StoreT s v a #
ComonadHoist (TracedT m) #
Methods cohoist :: (Comonad w, Comonad v) => (forall x. w x -> v x) -> TracedT m w a -> TracedT m v a #