141       : keys_(keys), current_(keys.size()) {  in VectorIterator()
148     : keys_(keys), values_(values), current_(keys.size()) {  in VectorIterator()
152   virtual bool Valid() const override { return current_ < keys_.size(); }  in Valid()
154   virtual void SeekToFirst() override { current_ = 0; }  in SeekToFirst()
155   virtual void SeekToLast() override { current_ = keys_.size() - 1; }  in SeekToLast()
158     current_ = std::lower_bound(keys_.begin(), keys_.end(), target.ToString()) -  in Seek()
163     current_ = std::upper_bound(keys_.begin(), keys_.end(), target.ToString()) -  in SeekForPrev()
172   virtual void Next() override { current_++; }  in Next()
173   virtual void Prev() override { current_--; }  in Prev()
175   virtual Slice key() const override { return Slice(keys_[current_]); }  in key()
176   virtual Slice value() const override { return Slice(values_[current_]); }  in value()
186   size_t current_;  variable