রাস্ট [123] রেজেক্স

use regex::Regex;

fn main() {
  let string  = "a1b2c3";
  let pattern = r"[12]";

  let regex = Regex::new(pattern).unwrap();

  for matched in regex.find_iter(string) {
    println!("{}", matched.as_str());
  }
}