Control.Monad.Signatures

Signatures for monad operations that require specialized lifting.

Documentation

type CallCC m a b = ((a -> m b) -> m a) -> m a

Signature of the callCC operation, introduced in Control.Monad.Trans.Cont.

type Catch e m a = m a -> (e -> m a) -> m a

Signature of the catchE operation, introduced in Control.Monad.Trans.Except.

type Listen w m a = m a -> m (a, w)

Signature of the listen operation, introduced in Control.Monad.Trans.Writer.

type Pass w m a = m (a, w -> w) -> m a

Signature of the pass operation, introduced in Control.Monad.Trans.Writer.