rustHow to use non-capturing groups in Rust regex?

Non-capturing groups in Rust regex are used to group multiple regular expressions together without capturing the result of the group. They are denoted by (?: ) and can be used to apply quantifiers to multiple expressions at once.

Example code

let re = Regex::new(r"(?:a|b)*").unwrap();
assert!(re.is_match("ababab"));

Output example

true

Code explanation

• Regex::new(r"(?:a|b)*"): creates a new Regex object with a non-capturing group containing two regular expressions, a and b.
• unwrap(): unwraps the Regex object from the Result type.
• is_match("ababab"): checks if the given string matches the regular expression.

Helpful links

• Rust Regex Documentation
• Non-capturing Groups in Regex

Edit this code on GitHub