// 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"(?mi)(?<LanguageTag>(?<langtag>(?<language>(?:[a-z]{2,3}(?<extlang>(?:\-[a-z]{3}){0,3}))|[a-z]{4}|(?<subtag>[a-z]{5,8}))(?:\-(?<script>[a-z]{4}))?(?:\-(?<region>[a-z]{2}|[0-9]{3}))?(?:\-(?<variant>[0-9a-z]{5,8}|[0-9][0-9a-z]{3}))*(?:\-(?<extension>(?<singleton>[a-wy-z0-9])(?:\-[0-9a-z]{2,8})+))*)|(?<privateuse>[xX](?:\-[0-9a-z]{1,8})+)|(?<grandfathered>[a-z]{1,3}(?:\-[0-9a-z]{2,8}){1,2}))").unwrap();
let string = "";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
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/