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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 6abd7ee5d..802a78722 100644 --- a/Utility/Monad.hs +++ b/Utility/Monad.hs @@ -45,6 +45,10 @@ ma <||> mb = ifM ma ( return True , mb ) (<&&>) :: Monad m => m Bool -> m Bool -> m Bool ma <&&> mb = ifM ma ( mb , return False ) +{- Same fixity as && and || -} +infixr 3 (<&&>) +infixr 2 (<||>) + {- Runs an action, passing its value to an observer before returning it. -} observe :: Monad m => (a -> m b) -> m a -> m a observe observer a = do |