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Implementing a LLVM Micro C compiler in Haskell
2 projects | news.ycombinator.com | 4 Jun 2021
This is amazing. I tried following Stephen Diehl's JIT compiler in LLVM tutorial a few years ago but it was already outdated (the llvm-hs library changed quite a bit), and subsequent web searches didn't turn up much.
For those interested in tutorials like this, I'd also recommend a very literate Haskell compiler for the PCF language to C, which is essentially lambda calculus with some primitives.
Options for a frontend of demo for a toy app
6 projects | reddit.com/r/haskell | 13 Jun 2022
ghcjs is the way to go for you, and soon it might be asterius. i do not know how hard it is to set ghcjs up without a framework. but frameworks like obelisk (based on reflex-dom), shpadoinkle, and miso automate that for. i personally like obelisk for its functional reactive programming but it can get awkward and get in your way. so if gui programming is just a means to the end of this one small application and you are not really interested in it nor functional reactive programming, shpadoinkle or miso might suit you better. miso implements the elm architecture (also "TEA", "functional model view controller") and shpadoinkle implements something directly equivalent to the elm architecture. but shpadoinkle achieves more composable widgets by minimalizing the elm architecture. so i recommend shpadoinkle for its better concept although miso is more mature.
hint: Runtime Haskell interpreter
6 projects | reddit.com/r/haskell | 1 May 2022
Also, hint uses unsafeCoerce, and thus implicitly relies on an assumption about how values are represented at runtime. Namely, if a program P is interpreting an expression E of type A, hint assumes that the value of type A produced by the ghc interpreter has the same representation as the values of type A which are manipulated by program P. This is not guaranteed to be the case, since P has been compiled by the compiler portion of ghc while E has been evaluated by the interpreter portion of ghc. This means the ghc devs had to carefully craft their compiler and interpreters to match. When targetting the browser, a Haskell-to-js or Haskell-to-wasm compiler such as Asterius modifies ghc's code-generator so it produces js or wasm code. You would thus also need to tweak the interpreter so that it produces js or wasm values which match what the modified code-generator outputs. Or you could restrict yourself to the hint's less expressive eval :: String -> String API.
3 projects | reddit.com/r/haskell | 8 Feb 2022
We found a post where someone had a similar issue (here), but the fix in that issue doesn't help: using `ar` from `binutils` causes link errors like this instead:
Pandoc in the browser w/ lua (possible contract gig?)
4 projects | reddit.com/r/haskell | 16 Jan 2022
https://github.com/tweag/asterius/issues/851 (asterius has a demo, but no source, and I -assume no lua filter support)
Is GHCJS stuck on GHC 8.6.5?
3 projects | reddit.com/r/haskell | 17 Apr 2021
Another option is Asterius. I'm not familiar with the current state, and it's not had active development for about 3 months now, either, so it may be in the same boat? But I think the big disadvantage of Asterius is that there's just a lot less usage, and therefore a lot less testing with the whole Haskell ecosystem, versus GHCJS which has been a fixture for a while and where loads of people have thought about compatibility for years.
Haskell to JS
4 projects | reddit.com/r/haskell | 22 Jan 2021
Check out asterius
5 projects | news.ycombinator.com | 31 Dec 2020
I've played around with Haskell via the Asteruis project : https://github.com/tweag/asterius
Also emscripten of course, for C/C++.
What are some alternatives?
core-compiler - compile your own functional language
hyper-haskell-server - The strongly hyped Haskell interpreter.
proposals - Tracking WebAssembly proposals
dhall - Maintainable configuration files
accelerate - Embedded language for high-performance array computations
egison-tutorial - The Egison tutorial
lambdacube-compiler - LambdaCube 3D is a Haskell-like purely functional language for GPU. Try it out:
ajhc - A fork of jhc. And also a Haskell compiler.
annah - Distributed programming language that desugars to Morte
perspective - A data visualization and analytics component, especially well-suited for large and/or streaming datasets.