a very simple rust function, to demonstrate on https://zzzz.dev

simple.rs

use std::env;

pub fn main() {
  let args: Vec<String> = env::args().collect();
  let mut ret_val = String::from("hello, ");
  ret_val.push_str(&args[1]);
  ret_val.push_str("\n");
  ret_val.push_str("try calling me like https://fd96bd80a0d79fe3831f67a461d064b6.run.zzzz.dev/mommy");
  println!("{}", ret_val);
}