function template
<algorithm>

std::move

template <class InputIterator, class OutputIterator>
  OutputIterator move (InputIterator first, InputIterator last, OutputIterator result);
Move range of elements
Moves the elements in the range [first,last) into the range beginning at result.

The value of the elements in the [first,last) is transferred to the elements pointed by result. After the call, the elements in the range [first,last) are left in an unspecified but valid state.

The ranges shall not overlap in such a way that result points to an element in the range [first,last). For such cases, see move_backward.

The behavior of this function template is equivalent to:
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template<class InputIterator, class OutputIterator>
  OutputIterator move (InputIterator first, InputIterator last, OutputIterator result)
{
  while (first!=last) {
    *result = std::move(*first);
    ++result; ++first;
  }
  return result;
}


Parameters

first, last
Input iterators to the initial and final positions in a sequence to be moved. The range used is [first,last), which contains all the elements between first and last, including the element pointed by first but not the element pointed by last.
result
Output iterator to the initial position in the destination sequence.
This shall not point to any element in the range [first,last).

Return value

An iterator to the end of the destination range where elements have been moved.

Example

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// move algorithm example
#include <iostream>     // std::cout
#include <algorithm>    // std::move (ranges)
#include <utility>      // std::move (objects)
#include <vector>       // std::vector
#include <string>       // std::string

int main () {
  std::vector<std::string> foo = {"air","water","fire","earth"};
  std::vector<std::string> bar (4);

  // moving ranges:
  std::cout << "Moving ranges...\n";
  std::move ( foo.begin(), foo.begin()+4, bar.begin() );

  std::cout << "foo contains " << foo.size() << " elements:";
  std::cout << " (each in an unspecified but valid state)";
  std::cout << '\n';

  std::cout << "bar contains " << bar.size() << " elements:";
  for (std::string& x: bar) std::cout << " [" << x << "]";
  std::cout << '\n';

  // moving container:
  std::cout << "Moving container...\n";
  foo = std::move (bar);

  std::cout << "foo contains " << foo.size() << " elements:";
  for (std::string& x: foo) std::cout << " [" << x << "]";
  std::cout << '\n';

  std::cout << "bar is in an unspecified but valid state";
  std::cout << '\n';

  return 0;
}


Possible output:
Moving ranges...
foo contains 4 elements: (each in an unspecified but valid state)
bar contains 4 elements: [air] [water] [fire] [earth]
Moving container...
foo contains 4 elements: [air] [water] [fire] [earth]
bar is in an unspecified but valid state

Complexity

Linear in the distance between first and last: Performs a move-assignment for each element in the range.

Data races

The objects in both ranges are modified.

Exceptions

Throws if either an element move-assignment or an operation on iterators throws.
Note that invalid arguments cause undefined behavior.

See also

move_backward
Move range of elements backward (function template )
copy
Copy range of elements (function template )

C++