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Showing content from https://www.tutorialspoint.com/cpp_standard_library/cpp_vector_operator_assignment_move.htm below:

C++ Vector Library - operator=() Function

The C++ function std::vector::operator=() move the contents of one vector into another and modifies size if necessary.

Following is the declaration for std::vector::operator=() function form std::vector header.

vector& operator= (vector&& x);

x − another vector container of same type.

Returns this pointer.

This member function never throws exception.

Linear i.e. O(n)

The following example shows the usage of std::vector::operator=() function.

#include <iostream>
#include <vector>

using namespace std;

int main(void) {
   vector<int> v1 = {1, 2, 3, 4, 5};
   vector<int> v2;

   /* assignment using move construct */
   v2 = move(v1);

   for (int i = 0; i < v2.size(); ++i)
      cout << v2[i] << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

1
2
3
4
5

vector.htm

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