// 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)\b([a-z]{1}[0-9]{4}|[a-z]{2}[0-9]{3}|[a-z]{3}[0-9]{2}|[a-z]{4}[0-9]{1})\b").unwrap();
let string = "Positive matches: a1111, aa111, aaa11, aaaa1
Negative matches: a1a1a, aa11a, aa11, 1aaaa ";
// 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/