base-4.9.0.0: Basic libraries

Copyright(c) Andy Gill 2001, (c) Oregon Graduate Institute of Science and Technology, 2001
LicenseBSD-style (see the file LICENSE)
MaintainerR.Paterson@city.ac.uk
Stabilityexperimental
Portabilityportable
Safe HaskellSafe
LanguageHaskell2010

Control.Monad.IO.Class

Description

Class of monads based on IO.

Synopsis

Documentation

class Monad m => MonadIO m where Source #

Monads in which IO computations may be embedded. Any monad built by applying a sequence of monad transformers to the IO monad will be an instance of this class.

Instances should satisfy the following laws, which state that liftIO is a transformer of monads:

Minimal complete definition

liftIO

Methods

liftIO :: IO a -> m a Source #

Lift a computation from the IO monad.

Instances

MonadIO IO Source # 

Methods

liftIO :: IO a -> IO a Source #