// 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"path(?:.*?foo=(\d+)\b|()(?!.*foo))").unwrap();
let string = "path?foo=67
path?foo=67&bar=hello
path?bar=bye&foo=1&baz=12
path?bar=123
path
path?foo=37signals
path?foo=-8
something?foo=1";
// 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/