Copyright |
(c) Andy Gill 2001
(c) Oregon Graduate Institute of Science and Technology 2001 |
---|---|
License | BSD-style (see the file LICENSE) |
Maintainer | R.Paterson@city.ac.uk |
Stability | experimental |
Portability | portable |
Safe Haskell | Safe |
Language | Haskell98 |
Control.Monad.Trans.List
Description
Deprecated: This transformer is invalid on most monads
The ListT monad transformer, adding backtracking to a given monad, which must be commutative.
The ListT monad transformer
Parameterizable list monad, with an inner monad.
Note: this does not yield a monad unless the argument monad is commutative.