// 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)^(?!.*(?:[_-]$|_ | _))(?:[a-zA-Z][\w -]*)?$").unwrap();
let string = " // Match
A
HelloWorld
Hello_-World
Hello_World_1
He110_W0rld
Hello - World
Hello-World
// doesn't match
Hello _World
Hello_ World
Hello _ World
_HelloWorld";
// 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/