| 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
- class (Functor f, Comonad w) => ComonadCofree f w | w -> f where
- unwrap :: w a -> f (w a)
Documentation
class (Functor f, Comonad w) => ComonadCofree f w | w -> f where
Allows you to peel a layer off a cofree comonad.
Instances
| ComonadCofree [] Tree | |
| ComonadCofree Maybe NonEmpty | |
| ComonadCofree f w => ComonadCofree f (IdentityT w) | |
| Functor f => ComonadCofree f (Cofree f) | |
| Comonad w => ComonadCofree Identity (CoiterT w) | |
| (ComonadCofree f w, Monoid m) => ComonadCofree f (TracedT m w) | |
| ComonadCofree f w => ComonadCofree f (StoreT s w) | |
| ComonadCofree f w => ComonadCofree f (EnvT e w) | |
| (Functor f, Comonad w) => ComonadCofree f (CofreeT f w) | |
| ComonadCofree (Const b) ((,) b) |