// 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"(([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-5][0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-5][0-5])").unwrap();
let string = "255.0.0.1
127.0.0.1
127,0,0,1
192.168.178.90
89.50.50.123
0000.2.2.2
2.0000.2.2
2.2.0000.2
2.2.2.0000";
// result will be a tuple containing the start and end indices for the first match in the string
let result = regex.captures(string);
let (start, end) = match result {
Some((s, e)) => (s, e),
None => {
// ...
}
};
println!("{}", &string[start, end]);
}
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/