// 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)^(?!(?:(?!g1|g2).)*(?:g21|g22)(?:(?!g31|g32|g41|g42).)*(?:g11|g12)).*?(?:g11|g12).*$").unwrap();
let string = "'g11'
'g31 g11'
'g41g11'
'g11 g21 g11'
'anything or nothing g11 anything or nothing'
'anything or nothing g31 anything or nothing g11'
'anything'
''
'g31 g21 g11'
'g21 g11 g31'
";
// 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/