Code shared from the Rust Playground

playground.rs

extern crate regex;
use regex::Regex;

fn main() {
    let rg = Regex::new(r"(\d)-(\d)(\d)(\d)-(\d)(\d)(\d)(\d)(\d)-(\d)").unwrap();
    // Regex::captures returns Option<Captures>,
    // first element is the full match and others
    // are capture groups
    let isbn : Vec<_>  = rg.captures("3-598-21508-8").unwrap().iter().skip(1).map(|x| x.unwrap().as_str().parse::<u64>().unwrap()).collect();
    println!("{:?}", isbn);
    // (x1 * 10 + x2 * 9 + x3 * 8 + x4 * 7 + x5 * 6 + x6 * 5 + x7 * 4 + x8 * 3 + x9 * 2 + x10 * 1) mod 11 == 0 
    print!("{}", (isbn[0] * 10 + isbn[1] * 9 + isbn[2] * 8 + isbn[3] * 7 + isbn[4] * 6 + isbn[5] * 5 + isbn[6] * 4 + isbn[7] * 3 + isbn[8] * 2 + isbn[9] * 1) % 11 == 0); 

}