fay-base-0.21.0.0: The base package for Fay.
Data.Either
Description
Either operations.
Synopsis
whenLeft :: Either a b -> (a -> Fay c) -> Fay (Maybe c) Source #
Basically forM.
whenRight :: Either a b -> (b -> Fay c) -> Fay (Maybe c) Source #
isLeft :: Either a b -> Bool Source #
Usual isLeft.
isRight :: Either a b -> Bool Source #
Usual isRight.