Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0)

abstract operator fun get(index: Int): MatchGroup?

Returns a group with the specified index.

Return

An instance of MatchGroup if the group with the specified index was matched or null otherwise.

Groups are indexed from 1 to the count of groups in the regular expression. A group with the index 0 corresponds to the entire match.