Welcome!

Aspen is a toy programming language created for learning purposes.

fn list(generator fn(i64)i64, n i64) void {
    for (let i i64 = 0; i <= n; i = i + 1) {
        print generator(i);
    }
}

fn square(n i64) i64 {
    return n * n;
}

list(square, 10);

Why?

Aspen was created purely for educational purposes, in fact this website was also created to learn about web development. Aspen is not a well designed language nor was it intended it be. Many features expected from a programming language such as arrays are missing. Instead Aspen was created to learn about how programming languages are implemented. The features that exist in Aspen are there purely because I wanted to learn how they are implemented.

Getting Started

Aspen can be downloaded locally on GitHub, or you can try out our online playground to start writing Aspen programs in the browser.