Packages monad-parallel [1], monad-coroutine [2] and SCC [3] have been
upgraded on Hackage to version 0.7.
The monad-parallel library defines two Monad subclasses,
MonadParallel and MonadFork, that enable some monadic computations to be
executed in parallel and their results combined. The library also
exports a subset of the Control.Monad interface (ap, sequence, and
related functions), adjusted to exploit the parallelism. The new version
of the library adds several more instances of these classes.
The monad-coroutine library exports a generic monad transformer
Coroutine: Functor s => MonadTrans (Coroutine s). A
Coroutine-transformed monad can suspend at any point, returning its
resumption wrapped in the functor s.
The new release of monad-coroutine makes Coroutine an instance of
Functor and Applicative classes. It also adds support for
inter-coroutine communication through chunks parsed by the
incremental-parser library [4].
The new version of Streaming Component Combinators (a.k.a. SCC)
relies the aforementioned incremental-parser support to some good
effect. Many coroutine components have been simplified and sped up by
~30% on average.
[1] http://hackage.haskell.org/package/monad-parallel-0.7
[2] http://hackage.haskell.org/package/monad-coroutine-0.7
[3] http://hackage.haskell.org/package/scc-0.7
[4] http://hackage.haskell.org/package/incremental-parser-0.1
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