foth VS cling

I hacked up a simple forth-like system in golang, by following the overview posted in this hackernews comment-chain:

https://news.ycombinator.com/item?id=13082825

The result is here:

https://github.com/skx/foth

It's not real, but it was a pretty fun experiment regardless.

Here's one of the many forks that brings it up to 64-bit:

https://github.com/matematikaadit/jombloforth

If you like forth there's an awesome series of comments here on hacker news on building a simple variant in a few simple steps:

https://news.ycombinator.com/item?id=13082825

I took that, and built a simple forth-like system, in golang following the original recipe and breaking it down into simple steps for learning-purposes:

https://github.com/skx/foth

I'll always vote up submissions referencing anything FORTH related. For me FORTH is as much fun as lisp appears to be for others. I've never really done much with it, but I always like the simplicity and the ability to reason about it.

Sure FORTH has problems of its own, but it's always nice to use. I've hacked up a couple of simple FORTH-like systems over the years, most recently this one which was inspired by a thread on this site:

https://github.com/skx/foth

A lot of people go through guides of writing a lisp, I'd love to urge people to try writing a simple FORTH interpreter instead, or even something somewhat related such as TCL.

There's even a recipe posted in a couple of comments here:

https://news.ycombinator.com/item?id=13082825

I followed that guide to implement a simple FORTH-like system in golang:

https://github.com/skx/foth

As I was following the implementation recipe I broke it down into "educational steps". Although it isn't a true FORTH it is pretty easy to understand and useful enough to embed inside other applications.

Now and again I consider doing it again, but using a real return-stack to remove the hardcoded control-flow words from the interpreter, but I never quite find the time.

I actually hacked up a simple forth-like system, after reading a brief howto here on hackernews:

https://github.com/skx/foth/

Here's the thread which has the barebones overview which inspired me:

https://news.ycombinator.com/item?id=13082825

I could have taken it further, but the implementation there is not "real" in the sense that there is no real return-stack, so you can't implement IF-statements using the lower-level primitives.

That said it is a good starting point, and I had some fun doing it. I'd guesstimate it is more of a single weekend project though, rather than longer.

More recent activity, but based on clang: https://github.com/jupyter-xeus/xeus-cling https://github.com/root-project/cling

> The repl driven workflow is amazing and the lisp images are rock solid and highly performant.

do people not realize that basically everything vm/interpreted language has a repl these days?

https://www.digitalocean.com/community/tutorials/java-repl-j...

https://github.com/waf/CSharpRepl

https://pub.dev/packages/interactive

not to mention ruby, python, php, lua

hell even c++ has a janky repl https://github.com/root-project/cling

Interactive C++ with Cling, https://blog.llvm.org/posts/2020-11-30-interactive-cpp-with-cling/, https://github.com/root-project/cling/, Relaxing the One Definition Rule in Interpreted C++, https://dl.acm.org/doi/10.1145/3377555.3377901 (PDF: https://www.researchgate.net/publication/339463915_Relaxing_the_one_definition_rule_in_interpreted_C)

Want to see your mind blown? Check out cling, a (sort of) C and C++ interpreter (it's a REPL). Or the work in progress, live-developed clauf, a real C interpreter.

Cling: https://github.com/root-project/cling

Wanting to just test pure c or c++ functions that are hardware independent -> (solution that I'm using): cling just in time compiler, gives a shell that you can just experiment with C++ expressions

C++ source cannot contain a shebang, but you can make them executable with binfmt-misc, and have the kernel pass them to a C++ interpreter such as Cling upon execution. Pretty much the same as running Python or Bash scripts.