Safe Haskell	Safe-Inferred
Language	Haskell2010

Control.Monad.Fail.Compat

Documentation

class Monad m => MonadFail (m :: Type -> Type) where #

Methods

fail :: String -> m a #

Instances details

MonadFail P #
Instance details Defined in GHC.Internal.Text.ParserCombinators.ReadP Methods fail :: String -> P a #
MonadFail ReadP #
Instance details Defined in GHC.Internal.Text.ParserCombinators.ReadP Methods fail :: String -> ReadP a #
MonadFail ReadPrec #
Instance details Defined in GHC.Internal.Text.ParserCombinators.ReadPrec Methods fail :: String -> ReadPrec a #
MonadFail IO #
Instance details Defined in GHC.Internal.Control.Monad.Fail Methods fail :: String -> IO a #
MonadFail Maybe #
Instance details Defined in GHC.Internal.Control.Monad.Fail Methods fail :: String -> Maybe a #
MonadFail [] #
Instance details Defined in GHC.Internal.Control.Monad.Fail Methods fail :: String -> [a] #
MonadFail f => MonadFail (Ap f) #
Instance details Defined in GHC.Internal.Data.Monoid Methods fail :: String -> Ap f a #