std::make_move_iterator

 

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Stream iterators istream_iterator    ostream_iterator istreambuf_iterator ostreambuf_iterator	Iterator customization points ranges::iter_move (C++20) ranges::iter_swap (C++20)
Iterator operations advance distance prev (C++11)   next (C++11) ranges::advance (C++20) ranges::distance (C++20) ranges::prev (C++20) ranges::next (C++20)	Range access begincbegin (C++11)(C++14) rbegincrbegin (C++14)(C++14)   endcend (C++11)(C++14) rendcrend (C++14)(C++14)   sizessize (C++17)(C++20) empty (C++17) data (C++17)

 

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

std::move_iterator<Iter>(std::move(i))

Example

Run this code

#include <iomanip>#include <iostream>#include <iterator>#include <list>#include <string>#include <vector>   auto print =[](constauto rem, constauto& seq){for(std::cout<< rem;constauto& 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 (class template)
move (C++11)	converts the argument to an xvalue (function template)