Std::make_move_iterator (3) Linux Manual Page

std::make_move_iterator – std::make_move_iterator

Synopsis

Defined in header<iterator>

    template <class Iter>
    (since C++ 11)

        std::move_iterator<Iter> make_move_iterator(const Iter &i);
(until C++ 14)

    template <class Iter>
    (since C++ 14)

        std::move_iterator<Iter> make_move_iterator(Iter i);
(until C++ 17)

    template <class Iter>
    (since C++ 17)

        constexpr std::move_iterator<Iter> make_move_iterator(Iter i);

make_move_iterator is a convenience function template that constructs a std::move_iterator for the given iterator i with the type deduced from the type of the argument.

Parameters

i – input iterator to be converted to move iterator

Return value

A std::move_iterator which can be used to move from the elements accessed through i

Possible implementation

  template< class Iter >
  constexpr std::move_iterator<Iter> make_move_iterator( Iter i )
  {
      return std::move_iterator<Iter>(i);
  }

Example

// Run this code

#include <iostream>

#include <list>

#include <vector>

#include <string>

#include <iterator>
int main()

{
    std::list<std::string> s{"one", "two", "three"};
    std::vector<std::string> v1(s.begin(), s.end()); // copy
    std::vector<std::string> v2(std::make_move_iterator(s.begin()),
                                std::make_move_iterator(s.end())); // move
    std::cout << "v1 now holds: ";
    for (auto str : v1)
        std::cout << "\"" << str << "\" ";
    std::cout << "\nv2 now holds: ";
    for (auto str : v2)
        std::cout << "\"" << str << "\" ";
    std::cout << "\noriginal list now holds: ";
    for (auto str : s)
        std::cout << "\"" << str << "\" ";
    std::cout << '\n';
}

Possible output:

  v1 now holds: "one" "two" "three"
  v2 now holds: "one" "two" "three"
  original list now holds: "" "" ""

std::make_move_iterator (3) Linux Manual Page