| Copyright | (C) 2008-2014 Edward Kmett |
|---|---|
| License | BSD-style (see the file LICENSE) |
| Maintainer | Edward Kmett <ekmett@gmail.com> |
| Stability | experimental |
| Portability | non-portable (fundeps, MPTCs) |
| Safe Haskell | Safe |
| Language | Haskell2010 |
Control.Comonad.Traced
Description
- class Comonad w => ComonadTraced m w | w -> m where
- trace :: m -> w a -> a
- traces :: ComonadTraced m w => (a -> m) -> w a -> a
- type Traced m = TracedT m Identity
- traced :: (m -> a) -> Traced m a
- runTraced :: Traced m a -> m -> a
- newtype TracedT m w a = TracedT {
- runTracedT :: w (m -> a)
- module Control.Comonad
- module Control.Comonad.Trans.Class
- module Data.Monoid
ComonadTraced class
class Comonad w => ComonadTraced m w | w -> m where
Methods
trace :: m -> w a -> a
Instances
| ComonadTraced m w => ComonadTraced m (IdentityT w) | |
| Monoid m => ComonadTraced m ((->) m) | |
| ComonadTraced m w => ComonadTraced m (StoreT s w) | |
| ComonadTraced m w => ComonadTraced m (EnvT e w) | |
| (Comonad w, Monoid m) => ComonadTraced m (TracedT m w) |
traces :: ComonadTraced m w => (a -> m) -> w a -> a
The Traced comonad
The TracedT comonad transformer
newtype TracedT m w a
Constructors
| TracedT | |
Fields
| |
Instances
| (ComonadEnv e w, Monoid m) => ComonadEnv e (TracedT m w) | |
| (ComonadStore s w, Monoid m) => ComonadStore s (TracedT m w) | |
| (Comonad w, Monoid m) => ComonadTraced m (TracedT m w) | |
| Monoid m => ComonadTrans (TracedT m) | |
| Monoid m => ComonadHoist (TracedT m) | |
| Functor w => Functor (TracedT m w) | |
| Applicative w => Applicative (TracedT m w) | |
| Distributive w => Distributive (TracedT m w) | |
| (ComonadApply w, Monoid m) => ComonadApply (TracedT m w) | |
| (Comonad w, Monoid m) => Comonad (TracedT m w) |
Re-exported modules
module Control.Comonad
module Control.Comonad.Trans.Class
module Data.Monoid