Util.RWS

Documentation

data RWS r w s a

Instances

Monoid w => MonadReader r (RWS r w s)

Monoid w => MonadState s (RWS r w s)

Monoid w => MonadWriter w (RWS r w s)

Monoid w => Monad (RWS r w s)

Functor (RWS r w s)

runRWS :: RWS r w s a -> r -> s -> (a, s, w)

module Control.Monad.Reader

module Control.Monad.Writer

module Control.Monad.State