| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Control.Lens.States
Description
Versions of the lens operators for MonadStates instead of MonadState.
Documentation
module Control.Monad.States
use :: MonadStates s m => Getting a s a -> m a Source
get :: MonadStates s m => m s Source
put :: MonadStates s m => s -> m () Source
(.=) :: MonadStates s m => ASetter s s a b -> b -> m () Source
(%=) :: MonadStates s m => ASetter s s a b -> (a -> b) -> m () Source
(?=) :: MonadStates s m => ASetter s s a (Maybe b) -> b -> m () Source
(<~) :: MonadStates s m => ASetter s s a b -> m b -> m () Source
(<.=) :: MonadStates s m => ASetter s s a b -> b -> m b Source
(<?=) :: MonadStates s m => ASetter s s a (Maybe b) -> b -> m b Source