list<string> s; // populate the list s vector<string> v1(s.begin(), s.end()); // copies strings into v1 vector<string> v2(make_move_iterator(s.begin()), make_move_iterator(s.end())); // moves strings into v2— end example
namespace std { template <class Iterator> class move_iterator { public: using iterator_type = Iterator; using iterator_category = typename iterator_traits<Iterator>::iterator_category; using value_type = typename iterator_traits<Iterator>::value_type; using difference_type = typename iterator_traits<Iterator>::difference_type; using pointer = Iterator; using reference = see below; 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 iterator_type base() const; constexpr reference operator*() const; constexpr pointer operator->() const; constexpr move_iterator& operator++(); constexpr move_iterator operator++(int); constexpr move_iterator& operator--(); constexpr move_iterator operator--(int); constexpr move_iterator operator+(difference_type n) const; constexpr move_iterator& operator+=(difference_type n); constexpr move_iterator operator-(difference_type n) const; constexpr move_iterator& operator-=(difference_type n); constexpr unspecified operator[](difference_type n) const; private: Iterator current; // exposition only }; 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, 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 auto operator-( const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base()); template <class Iterator> constexpr move_iterator<Iterator> operator+( typename move_iterator<Iterator>::difference_type n, const move_iterator<Iterator>& x); template <class Iterator> constexpr move_iterator<Iterator> make_move_iterator(Iterator i); }
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 move_iterator& operator++();
constexpr move_iterator operator++(int);
constexpr move_iterator& operator--();
constexpr move_iterator operator--(int);
constexpr move_iterator operator+(difference_type n) const;
constexpr move_iterator& operator+=(difference_type n);
constexpr move_iterator operator-(difference_type n) const;
constexpr move_iterator& operator-=(difference_type n);
constexpr unspecified operator[](difference_type n) const;
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, 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 auto operator-(
const move_iterator<Iterator1>& x,
const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base());
template <class Iterator>
constexpr move_iterator<Iterator> operator+(
typename move_iterator<Iterator>::difference_type n, const move_iterator<Iterator>& x);
template <class Iterator>
constexpr move_iterator<Iterator> make_move_iterator(Iterator i);