// 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)((\\\()((?!(\\\()|(\\\))).)*(\\\)))").unwrap();
let string = "y = x2 or \\(x = \\sqrt{y}\\) . For all \\(y \\geq 0\\), x is defined. Thus, y is set of all non-negative and real number. Hence, range is \\(y \\geq 0\\) or [0, ∞).";
let substitution = "<math>$1</math>";
// 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/