// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?i)\b(jack)[\s&-]*(?:(?:n|and)[\s&-]*)?(jill)\b").unwrap();
let string = " jackjill | jack jill | jack-jill | jack&jill | jack & jill | jack-&-jill | jack and jill | jackandjill | jack-and-jill | jack n jill jack knows Jill";
let substitution = "$1 & $2";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/