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_Reactive_ [1] is a simple foundation for programming reactive systems
functionally. Like Fran/FRP, it has a notions of (reactive) behaviors and
events. Like DataDriven [2], Reactive has a data-driven implementation.
The inspiration for Reactive was Mike Sperber's Lula [3] implementation of
FRP. Mike used blocking threads, which I had never considered for FRP.
While playing with the idea, I realized that I could give a very elegant
and efficient solution to caching, which DataDriven doesn't do. (For an
application "f <*> a" of a varying function to a varying argument, caching
remembers the latest function to apply to a new argument and the last
argument to which to apply a new function.)
The theory and implementation of Reactive are described in the paper
"Push-pull functional reactive programming" [4].
Note that cabal[5], version or greater is required for installation.
You can configure, build, and install all in the usual way with Cabal
runhaskell Setup.lhs configure
runhaskell Setup.lhs build
runhaskell Setup.lhs install