rhine
reactive-banana
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| rhine | reactive-banana | |
|---|---|---|
| 1 | 5 | |
| 101 | 516 | |
| - | - | |
| 0.0 | 0.0 | |
| 14 days ago | 10 days ago | |
| Haskell | Haskell | |
| BSD 3-clause "New" or "Revised" License | BSD 3-clause "New" or "Revised" License |
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rhine
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Tracking mentions began in Dec 2020.
reactive-banana
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Haskell, JS, and WebDev?
As I grew up on a Macintosh, I was always interested in graphical user interfaces. In my free time, I'm currently working on refreshing my reactive-banana library so that it will hopefully work well with the upcoming JavaScript backend. (The library relies on a few non-trivial garbage collector features, which were not implemented in GHCJS a decade ago. Essentially, I ended up with a program that gave different results, depending on whether it was compiled with GHC native or with GHCJS. 😅)
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How to prevent a deadlock in reactive-banana with event-switching? (Exception: thread blocked indefinitely in an MVar operation)
I am building a GUI-application in GTK and try to use reactive-banana as the style of FRP seems a lot better to work with in Haskell. The basis works: receiving events from the GTK-side lets me properly update the internal state. The problem however is when I want to create my own events and hook them onto the rest of the event-network I get a deadlock. I already sent an issue on Github, https://github.com/HeinrichApfelmus/reactive-banana/issues/216 , but looking at the commits it seems it is not that actively maintained anymore. I was able to find some kind of work-around for a basic use-case, but it is not enough when dealing with an event-stream that will fire multiple events. I created the following test-code to check where the problem lies (a bit simplified from the one on Github): {-# LANGUAGE RecursiveDo, LambdaCase #-} module Main where import Control.Monad.IO.Class (liftIO) import qualified Reactive.Banana as B import qualified Reactive.Banana.Frameworks as BF
There are some examples that also use event-switching, like https://github.com/HeinrichApfelmus/reactive-banana/blob/master/reactive-banana-wx/src/BarTab.hs , which also seems to use execute. They use <$ though instead of <$>:
What are some alternatives?
reflex - 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.
DefendTheKing - A simple multiplayer RTS game
reactive-thread
reactive-bacon - FRP (functional reactive programming) framework inspired by RX and Iteratee
Yampa - Functional Reactive Programming domain-specific language for efficient hybrid systems
reactive-banana-sdl2 - reactive banana to sdl2 bindings
reflex-dom - Web applications without callbacks or side-effects. Reflex-DOM brings the power of functional reactive programming (FRP) to the web. Build HTML and other Document Object Model (DOM) data with a pure functional interface.
yampa-glut - Yampa adapter for GLUT
essence-of-live-coding-gloss - Universal Live Coding & Functional Reactive Programming Framework
dunai - Classic FRP, Arrowized FRP, Reactive Programming, and Stream Programming, all via Monadic Stream Functions
RxHaskell