func (s *session) isLingering() bool {
	s.Lock()
	defer s.Unlock()
	return len(s.parties) == 0
}
// isLingering returns 'true' if every party has left this session
isLingering returns 'true' if every party has left this session
// isLingering returns ' true ' if every party has left this session
func (s *session) isLingering() bool {
	s.Lock()
	defer s.Unlock()
	return len(s.parties) == 0
}
func ( s * session ) isLingering ( ) bool { s . Lock ( ) defer s . Unlock ( ) return len ( s . parties ) == 0 }
isLingering returns 'true' if every party has left this session
isLingering returns ' true ' if every party has left this session