func (s *intSet) has(i int) bool {
	if s == nil {
		return false
	}
	return s.members[i] > 0
}
// has returns true if the specified id has a positive refcount.
// it is safe to call concurrently, but must not be called concurrently with any of the other methods.
has returns true if the specified id has a positive refcount.
it is safe to call concurrently, but must not be called concurrently with any of the other methods.
// has returns true if the specified id has a positive refcount . // it is safe to call concurrently but must not be called concurrently with any of the other methods .
func (s *intSet) has(i int) bool {
	if s == nil {
		return false
	}
	return s.members[i] > 0
}
func ( s * intSet ) has ( i int ) bool { if s == nil { return false } return s . members [ i ] > 0 }
has returns true if the specified id has a positive refcount.
has returns true if the specified id has a positive refcount .