Elk

Elk is a simple interpreted programming language. Its goal is to combine the best language features from its inspirations, Rust and Javascript, while still being quick and easy to develop in.

Usage

cargo run --release -- examples/ranges.elk

Examples

// This use statement will import a file named "std.elk" from the current directory
use "std.elk";

function print_n_times(text, n) {
    // 0..n defines a range, from 0 to n (including 0, excluding n).
    // For loops accept anything that can be converted to an iterator.
    for i in 0..n {
        // println is defined in ./std.elk
        println(i + ": " + text);
    }
}

let x = "this is a variable!!";
x = "Hello, World!";
print_n_times(x, 5);
// Output:
// 0: Hello, World!
// 1: Hello, World!
// 2: Hello, World!
// 3: Hello, World!
// 4: Hello, World!

use "std.elk";

function fib_recursive(n) {
    // In Elk, conditionals do not require parenthesis, and using them is discouraged.
    if n <= 1 {
        return n;
    }
    return fib_recursive(n - 1) + fib_recursive(n - 2);
}
function fib_loop(n) {
    let n1 = 0;
    let n2 = 1;
    for i in 0..(n - 1) {
        let tmp = n1 + n2;
        n1 = n2;
        n2 = tmp;
    }
    return n2;
}
let num = 10;
println(fib_recursive(num)); // Returns 55
println(fib_loop(num)); // Returns 55