dunai: Generalised reactive framework supporting classic, arrowized and monadic FRP.

Dunai is a DSL for strongly-typed CPS-based composable transformations.

Dunai is based on a concept of Monadic Stream Functions (MSFs). MSFs are transformations defined by a function unMSF :: MSF m a b -> a -> m (b, MSF m a b) that executes one step of a simulation, and produces an output in a monadic context, and a continuation to be used for future steps.

MSFs are a generalisation of the implementation mechanism used by Yampa, Wormholes and other FRP and reactive implementations.

When combined with different monads, they produce interesting effects. For example, when combined with the Maybe monad, they become transformations that may stop producing outputs (and continuations). The Either monad gives rise to MSFs that end with a result (akin to Tasks in Yampa, and Monadic FRP).

Flattening, that is, going from some structure MSF (t m) a b to MSF m a b for a specific transformer t often gives rise to known FRP constructs. For instance, flattening with EitherT gives rise to switching, and flattening with ListT gives rise to parallelism with broadcasting.

MSFs can be used to implement many FRP variants, including Arrowized FRP, Classic FRP, and plain reactive programming. Arrowized and applicative syntax are both supported.

For a very detailed introduction to MSFs, see: http://dl.acm.org/citation.cfm?id=2976010 (mirror: http://ivanperez.io/#FRPRefactored).

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Flags

Manual Flags

Name	Description	Default
test-hlint	Enable hlint test suite	Disabled
test-doc-coverage	Enable haddock coverage test suite	Disabled

Automatic Flags

Name	Description	Default
list-transformer	Use list-transformer instead of transformers to implement the ListT combinators	Disabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

• dunai-0.13.2.tar.gz [browse] (Cabal source package)
• Package description (as included in the package)

Maintainer's Corner

Package maintainers

• IvanPerez, keera_studios_ci, keera_studios_ci_dunai

For package maintainers and hackage trustees

• edit package information

Candidates

• 0.13.1, 0.13.2