yes(1) in Rust

yes.rs

use std::env;

fn main() {
    let args: Vec<_> = env::args().skip(1).collect();
    let yes = args.connect(" ");

    if yes.is_empty() {
        loop {
            println!("y");
        }
    } else {
        loop {
            println!("{}", yes);
        }
    }
}