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Control.Monad.Cont Portability non-portable (multi-parameter type classes) Stability experimental Maintainer libraries@haskell.org

Description

Continuation monads.

Documentation

class Monad m => MonadCont m where

Methods callCC :: ((a -> m b) -> m a) -> m a Instances MonadCont (Cont r) MonadCont m => MonadCont (ListT m) Monad m => MonadCont (ContT r m) (Error e, MonadCont m) => MonadCont (ErrorT e m) MonadCont m => MonadCont (ReaderT r m) MonadCont m => MonadCont (StateT s m) (Monoid w, MonadCont m) => MonadCont (WriterT w m) (Monoid w, MonadCont m) => MonadCont (RWST r w s m)

newtype Cont r a

Constructors Cont runCont :: ((a -> r) -> r) Instances Functor (Cont r) Monad (Cont r) MonadCont (Cont r)

mapCont :: (r -> r) -> Cont r a -> Cont r a

withCont :: ((b -> r) -> a -> r) -> Cont r a -> Cont r b

newtype ContT r m a

Constructors ContT runContT :: ((a -> m r) -> m r) Instances MonadReader r' m => MonadReader r' (ContT r m) MonadState s m => MonadState s (ContT r m) MonadTrans (ContT r) Monad m => Functor (ContT r m) Monad m => Monad (ContT r m) Monad m => MonadCont (ContT r m) MonadIO m => MonadIO (ContT r m)

mapContT :: (m r -> m r) -> ContT r m a -> ContT r m a

withContT :: ((b -> m r) -> a -> m r) -> ContT r m a -> ContT r m b

module Control.Monad

module Control.Monad.Trans

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