rex 3.9.13

Rex: A strongly-typed, pure, implicitly parallel functional programming language
Documentation 
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#[tokio::main]
async fn main() {
    match rex::eval("1 + 2").await {
        Ok(res) => {
            println!("{}", res);
            std::process::exit(0);
        }
        Err(e) => {
            eprintln!("Error: {}", e);
            std::process::exit(1);
        }
    }
}