C++

Reference

<memory>

shared_ptr

public member function
<memory>

std::shared_ptr::swap

void swap (shared_ptr& x) noexcept;
Swap content
Exchanges the contents of the shared_ptr object with those of x, transferring ownership of any managed object between them without destroying or altering the use count of either.

Parameters

x
Another shared_ptr object of the same type (i.e., with the same class template parameter T).

Return value

none

Example

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// shared_ptr::swap example
#include <iostream>
#include <memory>

int main () {
  std::shared_ptr<int> foo (new int(10));
  std::shared_ptr<int> bar (new int(20));

  foo.swap(bar);

  std::cout << "*foo: " << *foo << '\n';
  std::cout << "*bar: " << *bar << '\n';

  return 0;
}

Output:
*foo: 20
*bar: 10


See also

swap (shared_ptr)
Exchange content of shared_ptr objects (function template)
swap
Exchange values of two objects (function template)
shared_ptr::operator=
shared_ptr assignment (public member function)