This commit is contained in:
Joey Hess 2012-04-21 23:32:33 -04:00
parent bee420bd2d
commit ed79596b75
27 changed files with 56 additions and 52 deletions

View file

@ -49,3 +49,7 @@ observe observer a = do
{- b `after` a runs first a, then b, and returns the value of a -}
after :: Monad m => m b -> m a -> m a
after = observe . const
{- do nothing -}
noop :: Monad m => m ()
noop = return ()