# wholeMatch(of:) Returns a match if this string is matched by the given regex in its entirety. ``` func wholeMatch(of regex: R) -> Regex.Match? where R : RegexComponent ``` ## Parameters `regex` The regular expression to match. ## Return Value The match, if one is found. If there is no match, or a transformation in `regex` throws an error, this method returns `nil`. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)