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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct HasAResource
  5. {
  6.     int* arr;
  7.  
  8.     HasAResource(int size):
  9.         arr(new int [size])
  10.     {
  11.     	cout << "size constructor: " << this << endl;
  12.     }
  13.  
  14.     HasAResource(const HasAResource& other) = delete;
  15.     HasAResource& operator=(const HasAResource& other) = delete;
  16.  
  17.     HasAResource(HasAResource&& other):
  18.         arr(nullptr)
  19.     {
  20.         arr = other.arr;
  21.         other.arr = nullptr;
  22.     	cout << "move constructor: " << this << endl;
  23.     }
  24.  
  25.     HasAResource& operator=(HasAResource&& other)
  26.     {
  27.     	cout << "move assignment: from " << &other << " to " << this << endl;
  28.         if (this != &other)
  29.         {
  30.             delete[] arr;
  31.             arr = other.arr;
  32.             other.arr = nullptr;
  33.         }
  34.         return *this;
  35.     }
  36.  
  37.     ~HasAResource()
  38.     {
  39.     	cout << "destructor: " << this << endl;
  40.     	delete[] arr;
  41.     }
  42.  
  43.     HasAResource& doStuff()
  44.     {
  45.     	cout << "doStuff: " << this << endl;
  46.         return *this;
  47.     }
  48. };
  49.  
  50. int main()
  51. {
  52.     HasAResource x = std::move(HasAResource(42).doStuff());
  53.     return 0;
  54. }
Success #stdin #stdout 0.01s 5504KB
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stdin
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Standard input is empty
stdout
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size constructor: 0x7ffe89f98fc0
doStuff: 0x7ffe89f98fc0
move constructor: 0x7ffe89f98fb8
destructor: 0x7ffe89f98fc0
destructor: 0x7ffe89f98fb8
https://ideone.com/NIpbzZ
language:
C++ 4.3.2 (gcc-4.3.2)
created:
4 years ago
visibility:
public

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