Safe Haskell	Safe-Inferred
Language	Haskell2010

Foundation.Monad.Except

Documentation

newtype ExceptT e m a Source #

Constructors

ExceptT
Fields runExceptT :: m (Either e a)

Instances

Instances details

MonadTrans (ExceptT e) Source #
Instance details Defined in Foundation.Monad.Except Methods lift :: Monad m => m a -> ExceptT e m a Source #
MonadFail m => MonadFail (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Methods fail :: String -> ExceptT e m a Source #
(Monad m, MonadFix m) => MonadFix (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Methods mfix :: (a -> ExceptT e m a) -> ExceptT e m a Source #
MonadIO m => MonadIO (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Methods liftIO :: IO a -> ExceptT e m a Source #
Monad m => Applicative (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Methods pure :: a -> ExceptT e m a Source # (<>) :: ExceptT e m (a -> b) -> ExceptT e m a -> ExceptT e m b Source # liftA2 :: (a -> b -> c) -> ExceptT e m a -> ExceptT e m b -> ExceptT e m c Source # (>) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m b Source # (<*) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m a Source #
Functor m => Functor (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Methods fmap :: (a -> b) -> ExceptT e m a -> ExceptT e m b Source # (<$) :: a -> ExceptT e m b -> ExceptT e m a Source #
Monad m => Monad (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Methods (>>=) :: ExceptT e m a -> (a -> ExceptT e m b) -> ExceptT e m b Source # (>>) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m b Source # return :: a -> ExceptT e m a Source #
Monad m => MonadFailure (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Associated Types type Failure (ExceptT e m) Source # Methods mFail :: Failure (ExceptT e m) -> ExceptT e m () Source #
MonadReader m => MonadReader (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except Associated Types type ReaderContext (ExceptT e m) Source # Methods ask :: ExceptT e m (ReaderContext (ExceptT e m)) Source #
type Failure (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except type Failure (ExceptT e m) = e
type ReaderContext (ExceptT e m) Source #
Instance details Defined in Foundation.Monad.Except type ReaderContext (ExceptT e m) = ReaderContext m