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| author |  Joey Hess <joey@kitenet.net> | 2012-04-21 23:32:33 -0400 |
|---|---|---|
| committer | Joey Hess <joey@kitenet.net> | 2012-04-21 23:32:33 -0400 |
| commit | ed79596b758935a3f22bf6803bc082a6bbe10f58 (patch) | |
| tree | 885a8a50e68dafb39ec886cb31aa4c549fbeb35e /Utility/Monad.hs | |
| parent | bee420bd2d0cbe16489b061b208083e2b8ba9d0e (diff) | |
noop
Diffstat (limited to 'Utility/Monad.hs')
| -rw-r--r-- | Utility/Monad.hs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Utility/Monad.hs b/Utility/Monad.hs index 9c85d31ca..2c9b9e9e0 100644 --- a/Utility/Monad.hs +++ b/Utility/Monad.hs @@ -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 () |