{- monadic stuff - - Copyright 2010-2012 Joey Hess - - License: BSD-2-clause -} {-# OPTIONS_GHC -fno-warn-tabs #-} module Utility.Monad where {- if with a monadic conditional. -} ifM :: Monad m => m Bool -> (m a, m a) -> m a ifM cond (thenclause, elseclause) = do c <- cond if c then thenclause else elseclause {- do nothing -} noop :: Monad m => m () noop = return ()