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std::unique_ptr::swap(3)       C++ Standard Libary	std::unique_ptr::swap(3)

NAME
     std::unique_ptr::swap - std::unique_ptr::swap

Synopsis
	void swap( unique_ptr& other ) noexcept;  (since C++11)

	Swaps  the  managed objects and associated deleters of *this and another
     unique_ptr
	object other.

Parameters
	other - another unique_ptr object to swap the  managed	object	and  the
     deleter with

Return value
	(none)

Example
     // Run this code

      #include <iostream>
      #include <memory>

      struct Foo
      {
	  Foo(int _val) : val(_val) { std::cout << "Foo...\n"; }
	  ~Foo() { std::cout << "~Foo...\n"; }
	  int val;
      };

      int main()
      {
	  std::unique_ptr<Foo> up1(new Foo(1));
	  std::unique_ptr<Foo> up2(new Foo(2));

	  up1.swap(up2);

	  std::cout << "up1->val:" << up1->val << '\n';
	  std::cout << "up2->val:" << up2->val << '\n';
      }

Output:
      Foo...
      Foo...
      up1->val:2
      up2->val:1
      ~Foo...
      ~Foo...

http://cppreference.com 	   2024.06.10		std::unique_ptr::swap(3)
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