Copyright	(C) 2008-2011 Edward Kmett
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	experimental
Portability	fundeps, MPTCs
Safe Haskell	Safe
Language	Haskell2010

Control.Comonad.Cofree.Class

Description

Synopsis

Documentation

class (Functor f, Comonad w) => ComonadCofree f w | w -> f where Source

Allows you to peel a layer off a cofree comonad.

Methods

unwrap :: w a -> f (w a) Source

Remove a layer.

Instances

ComonadCofree [] Tree Source
ComonadCofree Maybe NonEmpty Source
ComonadCofree f w => ComonadCofree f (IdentityT w) Source
Functor f => ComonadCofree f (Cofree f) Source
Comonad w => ComonadCofree Identity (CoiterT w) Source
(ComonadCofree f w, Monoid m) => ComonadCofree f (TracedT m w) Source
ComonadCofree f w => ComonadCofree f (StoreT s w) Source
ComonadCofree f w => ComonadCofree f (EnvT e w) Source
(Functor f, Comonad w) => ComonadCofree f (CofreeT f w) Source
ComonadCofree (Const b) ((,) b) Source