Effects: returns lhs.compare(rhs) >= 0.

"

template <class BidirectionalIterator> bool operator > (const sub_match<BidirectionalIterator>& lhs,                  const sub_match<BidirectionalIterator>& rhs);

"

"[_a-zA-Z0-9\\-]+([\\.]+[_a-zA-Z0-9\\-]+)*"