
Data.Either.Utils  Portability  portable  Stability  provisional  Maintainer  John Goerzen <jgoerzen@complete.org> 



Description 
Utilities for working with the Either data type
Copyright (c) 2004 John Goerzen, jgoerzen@complete.org


Synopsis 



Documentation 


:: MonadError e m   => e  (Right a) will be returned if this is (Just a)
 > Maybe a   > m a   Converts a Maybe value to an Either value, using the supplied parameter
as the Left value if the Maybe is Nothing.
This function can be interpreted as:
maybeToEither :: e > Maybe a > Either e a Its definition is given as it is so that it can be used in the Error and related monads.




Pulls a Right value out of an Either value. If the Either value is
Left, raises an exception with error.



Like forceEither, but can raise a specific message with the error.



Takes an either and transforms it into something of the more generic
MonadError class.



Take a Left to a value, crashes on a Right



Take a Right to a value, crashes on a Left



Take an Either, and return the value inside it


Produced by Haddock version 2.6.0 