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1. evalStateT :: Monad m => StateT s m a -> s -> m a

   mtl	Control.Monad.State.Strict

   Evaluate a state computation with the given initial state and return the final value, discarding the final state.

   • evalStateT m s = liftM fst
     (runStateT m s)

2. execState :: State s a -> s -> s

   mtl	Control.Monad.State.Strict

   Evaluate a state computation with the given initial state and return the final state, discarding the final value.

   • execState m s = snd (runState m
     s)

3. execStateT :: Monad m => StateT s m a -> s -> m s

   mtl	Control.Monad.State.Strict

   Evaluate a state computation with the given initial state and return the final state, discarding the final value.

   • execStateT m s = liftM snd
     (runStateT m s)

4. mapState :: ((a, s) -> (b, s)) -> State s a -> State s b

   mtl	Control.Monad.State.Strict

   Map both the return value and final state of a computation using the given function.

   • runState (mapState f m) = f . runState
     m

5. mapStateT :: (m (a, s) -> n (b, s)) -> StateT s m a -> StateT s n b

   mtl	Control.Monad.State.Strict

   Map both the return value and final state of a computation using the given function.

   • runStateT (mapStateT f m) = f .
     runStateT m

6. runState :: State s a -> s -> (a, s)

   mtl	Control.Monad.State.Strict

   Unwrap a state monad computation as a function. (The inverse of state.)

7. runStateT :: StateT s m a -> s -> m (a, s)

   mtl	Control.Monad.State.Strict

   No documentation available.

8. withState :: (s -> s) -> State s a -> State s a

   mtl	Control.Monad.State.Strict

   withState f m executes action m on a state modified by applying f.

   • withState f m = modify f >> m

9. withStateT :: forall s (m :: Type -> Type) a . (s -> s) -> StateT s m a -> StateT s m a

   mtl	Control.Monad.State.Strict

   withStateT f m executes action m on a state modified by applying f.

   • withStateT f m = modify f >> m

10. type InternalState = IORef ReleaseMap

    resourcet	Control.Monad.Trans.Resource

    The internal state held by a ResourceT transformer. Since 0.4.6

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