func (s *ConcatIterator) Next() {
	s.cur.Next()
	if s.cur.Valid() {
		// Nothing to do. Just stay with the current table.
		return
	}
	for { // In case there are empty tables.
		if !s.reversed {
			s.setIdx(s.idx + 1)
		} else {
			s.setIdx(s.idx - 1)
		}
		if s.cur == nil {
			// End of list. Valid will become false.
			return
		}
		s.cur.Rewind()
		if s.cur.Valid() {
			break
		}
	}
}
func (s *ConcatIterator) Next() {
	s.cur.Next()
	if s.cur.Valid() {
		// Nothing to do. Just stay with the current table.
		return
	}
	for { // In case there are empty tables.
		if !s.reversed {
			s.setIdx(s.idx + 1)
		} else {
			s.setIdx(s.idx - 1)
		}
		if s.cur == nil {
			// End of list. Valid will become false.
			return
		}
		s.cur.Rewind()
		if s.cur.Valid() {
			break
		}
	}
}
func ( s * ConcatIterator ) Next ( ) { s . cur . Next ( ) if s . cur . Valid ( ) { // Nothing to do. Just stay with the current table. return } for { // In case there are empty tables. if ! s . reversed { s . setIdx ( s . idx + 1 ) } else { s . setIdx ( s . idx - 1 ) } if s . cur == nil { // End of list. Valid will become false. return } s . cur . Rewind ( ) if s . cur . Valid ( ) { break } } }
// Next advances our concat iterator.
Next advances our concat iterator .