skl/skl.go
func (s *UniIterator) Next() {
	if !s.reversed {
		s.iter.Next()
	} else {
		s.iter.Prev()
	}
}
func (s *UniIterator) Next() {
	if !s.reversed {
		s.iter.Next()
	} else {
		s.iter.Prev()
	}
}
func ( s * UniIterator ) Next ( ) { if ! s . reversed { s . iter . Next ( ) } else { s . iter . Prev ( ) } }
// Next implements y.Interface
Next implements y . Interface