biwascheme VS gambit

If Scheme is something you enjoy, BiwaScheme's interpreter can be instantiated from within Javascript and can be used to evaluate Scheme code.

https://www.biwascheme.org/

This project is very exciting. In the meantime, there are a couple of options:

BiwaScheme: https://www.biwascheme.org/

Advantages: written in JavaScript, with excellent JS interop. Project has some history.

Disadvantages: slower than S7 (though still plenty fast for many uses), less-complete (e.g., no syntax-rules or syntax-case, though it does have its own define-macro).

S7 Scheme: https://cm-gitlab.stanford.edu/bil/s7

Written in C, but can be transpiled to WASM (see https://github.com/actonDev/s7-playground/ )

Advantages: This project also has some history. Considerably faster than BiwaScheme.

Disadvantages: JS interop is clumsier (basically the same issues as JS interop with any WASM code... this could probably be mitigated considerably if someone wanted to take the time).

For Scheme implementations there are LIPS and biwascheme. I haven't done more than play around with them, so I can't really give an informed opinion about pros and cons or favorites.

I used to have hundreds of open tabs. From there I kept repurposing it to do more stuff with the browser until it reached its current state, where I want to make it a "extend firefox from Emacs" thing. It kinda do that already, but extending the firefox-extension itself require the extension to be re-built (so you need whole javascript tooling, rebuild and reload the addon etc). I am considering adding something like biwascheme to it soon to work around that.

And then users can just use biwascheme and run programs in mainframes and their smart toasters

Languages like Biwa Scheme and LIPS Scheme are good for running Scheme in the browser. But I would prefer compiling Scheme code to JavaScript in the server, then serving the compiled JavaScript image to the browser.

Just a note that even BiwaScheme doesn't fully implement call/cc, it doesn't save the whole environment when capturing.

Very cool! Do you know how this compares with Biwascheme? https://www.biwascheme.org/

Biwascheme has some weird scoping bugs that makes me a litte afraid of using it for serious stuff. It seems nixe and all, but this: https://github.com/biwascheme/biwascheme/issues/125 is not very confidemce inspiring.

There is another schemey language that compiles to JS that accepts things like this:

    (when (start-are-aligned?)

- Gambit: web-server example

Not to be confused with Gambit (Scheme programming language implementation):

https://github.com/gambit/gambit

https://gambitscheme.org/

The Ribbit compiler was developed using Gambit but most of the code is portable. I rewrote a few parts with cond-expand to port rsc.scm to older versions of Gambit and also Guile and Chicken. If you pull the latest commit the Ribbit system should work with any of those Scheme systems. The README also contains usage instructions, here is a relevant part:

The Ribbit compiler is written in Scheme and can be executed with Gambit, Guile or Chicken. It has been tested with Gambit v4.7.5 and above. For the best experience install Gambit from https://github.com/gambit/gambit .

Currently Ribbit supports the target languages C, JavaScript, Python and Scheme which are selectable with the compiler's `-t` option with `c`, `js`, `py`, and `scm` respectively. The compacted RVM code can be obtained with the target `none` which is the default.

The `-m` option causes a minification of the generated program. This requires a recent version of Gambit.

The `-l` option allows selecting the Scheme runtime library (located in the `lib` subdirectory). The `min` library has the fewest procedures and a REPL that supports the core Scheme forms only. The `max` library has most of the R4RS predefined procedures, except for file I/O. The `max-tc` library is like `max` but with run time type checking. The default is the `max-tc` library.

Here are a few examples:

    Use Gambit to compile the minimal REPL to JavaScript

That is a bummer about the expired certificate. You can access the site using http instead of https if you are comfortable doing so. I have never seen this live REPL before and have just used their Github repo to get the latest: https://github.com/gambit/gambit

I think it is great someone is trying to get Racket compiling to Javascript again. I also agree with you about the REPL; while it is interesting to compile Racket to JS, having a REPL, a live environment and all the features of something like ClojureScript has much more utility.

Don't hesitate to submit the problems you encounter to the issue tracker on github (https://github.com/gambit/gambit/issues).

But it's command like tool, I don't think that there is Online tool even smilar to the Python tool you showed. You can try creating issue with a question on https://github.com/gambit/gambit/issues Marc Feeley may consider that it's also nice idea to show usage of Gambit, he was working on making Gambit on new try.scheme.org website, I've also did some help.

Edit: somebody opened an issue for this https://github.com/gambit/gambit/issues/649