25 Iterators library [iterators]

25.5 Iterator adaptors [predef.iterators]

25.5.4 Move iterators and sentinels [move.iterators]

25.5.4.6 Element access [move.iter.elem]

constexpr reference operator*() const;
Effects: Equivalent to: return ranges​::​iter_­move(current);
constexpr reference operator[](difference_type n) const;
Effects: Equivalent to: return ranges​::​iter_­move(current + n);