bracket package:monad-peel

bracket :: MonadPeelIO m => m a -> (a -> m b) -> (a -> m c) -> m c
monad-peel Control.Exception.Peel
Generalized version of bracket. Note, any monadic side effects in m of the "release" computation will be discarded; it is run only for its side effects in IO.
bracketOnError :: MonadPeelIO m => m a -> (a -> m b) -> (a -> m c) -> m c
monad-peel Control.Exception.Peel
Generalized version of bracketOnError.
bracket_ :: MonadPeelIO m => m a -> m b -> m c -> m c
monad-peel Control.Exception.Peel
Generalized version of bracket_. Note, any monadic side effects in m of both the "acquire" and "release" computations will be discarded. To keep the monadic side effects of the "acquire" computation, use bracket with constant functions instead.