Fusion Programming Language

#1

Post by efrecon » Wed, Jun 24, 2026, 11:27 AM UTC

Fusion Programming Language
fusion-lang.org

Re: Fusion Programming Language

#2

Post by efrecon » Wed, Jun 24, 2026, 11:27 AM UTC

Fusion is a programming language designed for implementing reusable components (libraries) for C, C++, C#, D, Java, JavaScript, Python, Swift, TypeScript and OpenCL C, all from single codebase.

Re: Fusion Programming Language

#3

Post by hav0c » Wed, Jun 24, 2026, 11:46 AM UTC

Reminds me of https://xkcd.com/927/

Re: Fusion Programming Language

#4

Post by jdonaldson » Sat, Jun 27, 2026, 3:41 AM UTC

I'd love to see a comparison to Haxe. https://haxe.org/

I wonder what performance and generated code size/quality look like.

Re: Fusion Programming Language

#5

Post by jdw64 » Sat, Jun 27, 2026, 4:08 AM UTC

Wow, this is really fusion. I like it.

Re: Fusion Programming Language

#6

Post by knhung » Sat, Jun 27, 2026, 4:55 AM UTC

The idea it's good but hard to make it good. A universal language is hard to optimise for a particular language.

Re: Fusion Programming Language

#7

Post by g42gregory » Sat, Jun 27, 2026, 5:13 AM UTC

What are the use cases? I am curious why Rust was not targeted.

Re: Fusion Programming Language

#8

Post by nine_k » Sat, Jun 27, 2026, 5:23 AM UTC

jdonaldson wrote: post #4

I'd love to see a comparison to Haxe. https://haxe.org/ I wonder what performance and generated code size/quality look like.

Apparently Haxe cannot target OpenCL. It can target PHP and Lua instead.

Re: Fusion Programming Language

#9

Post by nine_k » Sat, Jun 27, 2026, 5:29 AM UTC

g42gregory wrote: post #7

What are the use cases? I am curious why Rust was not targeted.

I suppose you can write various algorithms in it, and have that code natively trsnspiled to different languages, for ease of native interoperability. It's unlikely to produce the absolutely most optimized code, but the lack of the interface translation barrier (aka FFI) may more than compensate for it.

Rust is not easy to target efficiently, due to the borrow checker, and they likely don't want to dyn Box everything.

Re: Fusion Programming Language

#10

Post by Panzerschrek » Sat, Jun 27, 2026, 5:31 AM UTC

> implementing reusable components (libraries) for C, C++, C#, D, Java, JavaScript, Python, Swift, TypeScript and OpenCL C, all from single codebase

Why is this needed? I can't imagine that. I am sure writing code in fusion will produce C++ and Python code which is suboptimal and doesn't fit well in these languages.