// 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-Z])(?=[A-Z][a-z])|([a-z])(?=[A-Z])").unwrap();
let string = "SMThingAnotherThingBIGCapitalLetters Test
TTttTtest
TTT ";
let substitution = "\\1\\2 ";
// 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/