In LabVIEW you need to know the number of sub matches at edit time and cannot handle arbitrary regular expressions. It would be nice if there was a regex function that returned sub matches in an array which can be handled much more abstractly than a pre-sized xnode.
C++, the regex utilities return a container-like class https://www.cplusplus.com/reference/regex/match_results/
PHP an array of matches is returned https://www.php.net/manual/en/function.preg-match.php
JavaScript returns an array of matches https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/match
