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
andb
.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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