The Rune Programming Language

Welcome to the Rune Programming Language.

Rune is a dynamic programming language that is easily embeddable and has support for an exciting set of language features.

Asynchronous first

Rune prioritized excellent support for async with support for async functions, closures, blocks, and generators. And native support for select, a popular control flow mechanism for asynchronous code.

use std::future; struct Timeout; const SITE = ""; async fn request(timeout) { let request = http::get(`${SITE}/200?sleep=${timeout}`); let timeout = time::sleep(time::Duration::from_secs(1)); let result = select { res = request => res, _ = timeout => Err(Timeout), }?; let text = result.text().await?; Ok(text) } pub async fn main() { let result = future::join((request(0), request(1500))).await; dbg(result); }
Asynchronous programming using select

const evaluation

Rune has support for constant evaluation using the const keyword. Which can perform complex work at compile time.

const BASE = 10; const LIMIT = 0b1 << 10; const VALUE = { let timeout = BASE; while timeout < LIMIT { timeout = timeout * 2; } `${timeout}` }; pub fn main() { dbg(VALUE, LIMIT); }
VALUE and LIMIT is calculated once, reducing the work needed at runtime