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  1. #include <cstring>
  2. #include <iostream>
  3. #include <utility>
  4.  
  5. class MyClass {
  6. public:
  7.     MyClass(size_t c): count(c) {
  8.         data = new int[count];
  9.     }
  10.  
  11.  
  12.  
  13.     MyClass( MyClass&& src) : count(src.count) {
  14.         data = src.data;
  15.         src.count = 0;
  16.         src.data = nullptr;
  17.     }
  18.  
  19.     void operator=( MyClass&& src) {
  20.         data = src.data;
  21.         count = src.count;
  22.         src.count = 0;
  23.         src.data = nullptr;
  24.     }
  25.  
  26.  
  27.  
  28.  
  29.     ~MyClass() {
  30.         delete[] data;
  31.     }
  32.  
  33.     int* get_data() const {
  34.         return data;
  35.     }
  36.  
  37.     size_t get_count() const {
  38.         return count;
  39.     }
  40.  
  41. private:
  42.  
  43.     MyClass(const MyClass& src) : count(src.count) {
  44.         data = new int[src.count];
  45.         memcpy(data, src.data, sizeof(int)*src.count);
  46.     }
  47.  
  48.     void operator=(const MyClass& src) {
  49.         count = src.count;
  50.         data = new int[src.count];
  51.         memcpy(data, src.data, sizeof(int)*src.count);
  52.     }
  53.  
  54.  
  55.     int* data;
  56.     size_t count;
  57. };
  58.  
  59.  
  60. int main()
  61. {
  62.     MyClass mc(150);
  63.     for (size_t i = 0; i < mc.get_count(); ++i)
  64.         mc.get_data()[i] = i;
  65.     MyClass mc2 = std::move(mc);
  66.  
  67.     std::cout << "mc: " << mc.get_count() << '\n';
  68.     std::cout << "mc2: " << mc2.get_count() << '\n';
  69. }
Success #stdin #stdout 0s 3428KB
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stdin
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Standard input is empty
stdout
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mc: 0
mc2: 150
https://ideone.com/RjcHF3
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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