// 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)^Exactfoobar(?:\.[a-z0-9][a-z0-9_-]*){2}(?:\.[a-zA-Z0-9][a-zA-Z0-9_-]*)+$").unwrap();
let string = "Exactfoobar.somestring.some_other-string.someStringwithCaps
There could be 4 or more fields separated by a dot
The first word should be exactly Exactfoobar.
The 2nd and 3rd word can't have caps but can have -_
The 4th word and so on can have caps with -_";
// 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/