An FRP library with first-class and higher-order behaviors, and interalized IO.

Based on the paper Principled Practical FRP: Forget the past, Change the future, FRPNow!, ICFP 2015, by Atze van der Ploeg and Koenem Claessem.

The packages FRPNow-GTK and FRPNow-Gloss hook up FRPNow to GUI toolkits via the functions runNowGTK and runNowGloss

To understand what is going on, I suggest you look at the examples, and read section 1-5 of the paper.

The package contains the following modules:

Core

The core FRP primitives with denotational semantics.

Lib

Utility functions.

EvStream

Event streams.

Time

Utility functions related to passing the of time.

BehaviorEnd

A monadic abstraction for behaviors consisting of multiple phases (a bit advanced stuff, not needed to get going).