// 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"([^']*(?=lamb)[^']*)").unwrap();
let string = "'Baa, baa, black sheep, have you any wool?
Yes sir, yes sir, three bags full!
One for the master
One for the dame'
'Mary had a little lamb,
its fleece was white as snow;
And everywhere that Mary went,
the lamb was sure to go.'";
// 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/