constexpr move_iterator();
constexpr explicit move_iterator(Iterator i);
template<class U> constexpr move_iterator(const move_iterator<U>& u);
template<class U> constexpr move_iterator& operator=(const move_iterator<U>& u);
constexpr const Iterator& base() const & noexcept;
constexpr Iterator base() &&;
constexpr reference operator*() const;
constexpr reference operator[](difference_type n) const;
template<class Iterator1, class Iterator2>
constexpr bool operator==(const move_iterator<Iterator1>& x,
const move_iterator<Iterator2>& y);
template<sentinel_for<Iterator> S>
friend constexpr bool operator==(const move_iterator& x,
const move_sentinel<S>& y);
template<class Iterator1, class Iterator2>
constexpr bool operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
template<class Iterator1, class Iterator2>
constexpr bool operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
template<class Iterator1, class Iterator2>
constexpr bool operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
template<class Iterator1, class Iterator2>
constexpr bool operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
template<class Iterator1, three_way_comparable_with<Iterator1> Iterator2>
constexpr compare_three_way_result_t<Iterator1, Iterator2>
operator<=>(const move_iterator<Iterator1>& x,
const move_iterator<Iterator2>& y);
template<class Iterator1, class Iterator2>
constexpr auto operator-(
const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y)
-> decltype(x.base() - y.base());
template<sized_sentinel_for<Iterator> S>
friend constexpr iter_difference_t<Iterator>
operator-(const move_sentinel<S>& x, const move_iterator& y);
template<sized_sentinel_for<Iterator> S>
friend constexpr iter_difference_t<Iterator>
operator-(const move_iterator& x, const move_sentinel<S>& y);
template<class Iterator>
constexpr move_iterator<Iterator>
operator+(iter_difference_t<Iterator> n, const move_iterator<Iterator>& x);
friend constexpr iter_rvalue_reference_t<Iterator>
iter_move(const move_iterator& i)
noexcept(noexcept(ranges::iter_move(i.current)));
template<indirectly_swappable<Iterator> Iterator2>
friend constexpr void
iter_swap(const move_iterator& x, const move_iterator<Iterator2>& y)
noexcept(noexcept(ranges::iter_swap(x.current, y.current)));
template<class Iterator>
constexpr move_iterator<Iterator> make_move_iterator(Iterator i);
constexpr move_sentinel();
constexpr explicit move_sentinel(S s);
template<class S2>
requires convertible_to<const S2&, S>
constexpr move_sentinel(const move_sentinel<S2>& s);
template<class S2>
requires assignable_from<S&, const S2&>
constexpr move_sentinel& operator=(const move_sentinel<S2>& s);
constexpr S base() const;