// 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)(?<=^.{4,4}).").unwrap();
let string = "the quick brown fox jumped over the lazy dog
the quick brown fox jumped over the lazy dog
the quick brown fox jumped over the lazy dog
the quick brown fox jumped over the lazy dog
";
let substitution = "h";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
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/