Copyright | (c) Nils Schweinsberg 2011, (c) George Giorgidze 2011 (c) University Tuebingen 2011 |
---|---|
License | BSD-style (see the file libraries/base/LICENSE) |
Maintainer | libraries@haskell.org |
Stability | experimental |
Portability | portable |
Safe Haskell | Safe |
Language | Haskell2010 |
Monadic zipping (used for monad comprehensions)
Documentation
class Monad m => MonadZip m where Source
MonadZip
type class. Minimal definition: mzip
or mzipWith
Instances should satisfy the laws:
- Naturality :
liftM (f *** g) (mzip ma mb) = mzip (liftM f ma) (liftM g mb)
- Information Preservation:
liftM (const ()) ma = liftM (const ()) mb ==> munzip (mzip ma mb) = (ma, mb)
MonadZip [] |