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      std::unique_ptr::swap

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      rel_ops::operator!=
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      Troque, avançar e avançar
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      Swap, forward and move
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      std :: unique_ptr
      Funções de membro
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      unique_ptr::unique_ptr
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      <tbody> </tbody>
      void swap(unique_ptr& other);
      		 (desde C++11)
      Trocas os objetos gerenciados e deleters associado a outro objeto unique_ptr other.
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      Swaps the managed objects and associated deleters with another unique_ptr object other.
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      Parâmetros

      other -
      outro objeto unique_ptr para trocar o objeto gerenciado e com deleter
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      another unique_ptr object to swap the managed object and the deleter with
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      Valor de retorno

      (Nenhum)
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      (none)
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      Exceções

      noexcept specification:  
      <tbody> </tbody>
      noexcept
        (desde C++11)

      Exemplo

      #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 << std::endl;
    std::cout << "up2->val:" << up2->val << std::endl;
}

      Saída: 

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