Fungo

With 6k lines of code and 132 unit tests, Fungo is probably the most advanced of my projects. It is a statically typed functional programming language with a parser, type checker, and interpreter written in Rust.
The language is heavily inspired by Elixir and Go.
For demonstration purposes, I have written a simple web-based environment where you can write and run Fungo code. The code is interpreted in the browser using WebAssembly.

Example Programs

A Fungo program evaluates to the value of the last expression. This means that you can write simple programs like this:

"Hello, World!"

You can also destructure lists and tuples.

l = [1, 2, 3]
[a, ...b] = l
[...c, d] = l
[e, _, f] = l
((a, b), (c, d), (e, f))

You can define functions using the func keyword.

fib = func(n int) int {
match n {
0 -> 0,
1 -> 1,
_ -> self(n - 1) + self(n - 2)
}
}
fib(20)

ouzu

Fungo

Example Programs