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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();

Output example


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.

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