Control.Monad.Trans.Maybe

Copyright	(c) 2007 Yitzak Gale, Eric Kidd
License	BSD-style (see the file LICENSE)
Maintainer	ross@soi.city.ac.uk
Stability	experimental
Portability	portable
Safe Haskell	Safe
Language	Haskell98

The MaybeT monad transformer extends a monad with the ability to exit the computation