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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. class C 
  6. {
  7.   public:
  8.     C(std::string someName) : name(someName) {}
  9.  
  10.     void swap(C& other)
  11.     {
  12.         name.swap(other.name);
  13.         cout << "swap, other = " << other.name << "(" << &other << ")" << endl;
  14.     }
  15.  
  16.     C(C&& other) // конструктор копирования
  17.     {
  18.         this->swap(other);
  19.     }
  20.  
  21.     C& operator=(C other) // оператор присваивания
  22.     {                     // передача параметра по значению важна!
  23.         swap(other);      // обмен с временной копией
  24.         return *this;
  25.     }
  26.  
  27.     std::string name;
  28. };
  29.  
  30. int main(int argc, char* argv[])
  31. {
  32.     C c1("c1");
  33.     C c2(c1);
  34.     cout << "c1 -> " << c1.name << endl;
  35.     cout << "c2 -> " << c2.name << endl;
  36. }
Success #stdin #stdout 0s 3060KB
comments (?)
stdin
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Standard input is empty
stdout
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c1 -> c1
c2 -> c1
https://ideone.com/E5ZK8G
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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