UniqueLogic.ST.TF.MonadTrans

Documentation

class MonadTrans t => C t where

Provide the methods that make a transformed monad a monad.

Methods

point :: Monad m => a -> t m a

bind :: Monad m => t m a -> (a -> t m b) -> t m b

Instances

C MaybeT

C IdentityT

C Track

C (ExceptionalT e)

Monoid w => C (WriterT w)

newtype Wrap t m a

Build a regular monad for generic monad transformer and monad. The Const type allows us to force the kind (m :: * -> *) without using ExplicitKindSignatures.

Constructors

Wrap (Const (t m a) (m a))

Instances

(C t, Monad m) => Monad (Wrap t m)

(C t, Monad m) => Functor (Wrap t m)

(C t, Monad m) => Applicative (Wrap t m)

wrap :: t m a -> Wrap t m a

unwrap :: Wrap t m a -> t m a

lift :: (C t, Monad m) => m a -> Wrap t m a