# std::make_move_iterator

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< cpp‎ | iterator

Defined in header `<iterator>` |  |
template< class Iter > std::move_iterator<Iter> make_move_iterator( Iter i ); |  | (since C++11) (until C++17)
template< class Iter > constexpr std::move_iterator<Iter> make_move_iterator( Iter i ); |  | (since C++17)

`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>(std::move(i));
    }

### Example

Run this code

    #include <iostream>
    #include <iomanip>
    #include <list>
    #include <vector>
    #include <string>
    #include <iterator>

    auto print = [](auto const rem, auto const& seq) {
        for (std::cout << rem; auto const& str : seq)
                std::cout << std::quoted(str) << ' ';
        std::cout << '\n';
    };

    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

        print("v1 now holds: ", v1);
        print("v2 now holds: ", v2);
        print("original list now holds: ", s);
    }

Possible output:

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

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
LWG 2061 | C++11 | `make_move_iterator` did not convert array arguments to pointers | made to convert

### See also

move_iterator (C++11) | iterator adaptor which dereferences to an rvalue reference (class template)
move (C++11) | obtains an rvalue reference (function template)

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