// 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"(?m)(([a-zA-Z0-9]{1,63}|[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9])\.){0,3}[a-zA-Z]{2,63}\b(?!\.)").unwrap();
let string = "site.com 1.site.com 2.1.site.com 3.2.1.site.com 4.3.2.1.site.com, 5.4.3.2.1.site.com";
// 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/