Interactive programs without callbacks or side-effects. Functional Reactive Programming (FRP) uses composable events and time-varying values to describe interactive systems as pure functions. Just like other pure functional code, functional reactive code is easier to get right on the first try, maintain, and reuse.
Reflex is a fully-deterministic, higher-order Functional Reactive Programming interface and an engine that efficiently implements that interface.
From the root of a Reflex Platform checkout, run
./scripts/hack-on haskell-overlays/reflex-packages/dep/reflex. This will check out the reflex source code into the
haskell-overlays/reflex-packages/dep/reflex directory. You can then point that checkout at your fork, make changes, etc. Use the
./scripts/work-on scripts to start a shell in which you can test your changes.