operational-0.2.3.2: Implementation of difficult monads made easy with operational semantics.

This library makes it easy to implement monads with tricky control flow.

This is useful for: writing web applications in a sequential style, programming games with a uniform interface for human and AI players and easy replay capababilities, implementing fast parser monads, designing monadic DSLs, etc.

See the project homepage http://haskell.org/haskellwiki/Operational for a more detailed introduction and features.

Related packages: MonadPrompt http://hackage.haskell.org/package/MonadPrompt.