The dyna is functional reactive programming (FRP) library for Haskell.
It implements classical FRP and provides easy to use interface to
write call-back heavy interactive applications. It takes an imperative
definition for event streams as a basis and
granted with Haskell power for abstractions builds elegant DSL on top of it.
Installation
The library can be installed with cabal from hackage
> cabal install dyna --lib
Also it can be used with stack. We just need to list it in the extra-deps
of the stack.yaml.
We recommend to start with tutorial on core concepts of the library
and then move on to the domain of your interests. With dyna
we can create animations (see dyna-gloss
or dyna-processing), terminal user interfaces
with dyna-brick.
The Paper
The paper Callback Heaven for FRP offers a good outline of the whole system and concepts behind
the dyna library.
Dyna core FRP tutorial
- Introduction
- Event streams
- Game example
- Dynamic values
- Main FRP monad
- Control flow. Recursion and sharing
- How to make bindings
- Parser for event streams
- Conclusion
- Quick Reference
- Resources
Resources
- Hackage docs - docs for
dynalibrary - Conal Elliott FRP publications - great papers from one of the inventors of FRP concept
- Ivan Perez FRP publications - great papers explainig the FRP concept and arrow style FRP
- Haskell FRP zoo - lists lots of examples in various FRP libraries
