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  1. #include <iostream>
  2.  
  3. template <typename T>
  4. class A
  5. {
  6. private:
  7.     T val1;
  8.     T val2;
  9.  
  10. public:
  11.     T getVal1()
  12.     {
  13.         return val1;
  14.     }
  15.     void setVal1(T aVal)
  16.     {
  17.         val1 = aVal;
  18.     }
  19.     T getVal2()
  20.     {
  21.         return val2;
  22.     }
  23.     void setVal2(T aVal)
  24.     {
  25.         val2 = aVal;
  26.     }
  27. };
  28.  
  29. template <typename T>
  30. class B
  31. {
  32. private:
  33.     A<T>* aPtr;
  34.  
  35.     B(const B&);            // TODO , disallow for now
  36.     B& operator=(const B&); // TODO , disallow for now
  37.  
  38. public:
  39. 	B() : aPtr(new A<T>()) {}
  40. 	~B() { delete aPtr; }
  41.  
  42.     A<T>* getAPtr()
  43.     {
  44.         return aPtr;
  45.     }
  46.     T operator[](const int& key)
  47.     {
  48.         if(key == 0)
  49.         {
  50.             T res = getAPtr()->getVal1();
  51.             return res;
  52.         }
  53.         else
  54.         {
  55.             T res = getAPtr()->getVal2();
  56.             return res;
  57.         }
  58.     }
  59. };
  60.  
  61. int main()
  62. {
  63.     B<int> foo;
  64.     foo.getAPtr()->setVal1(1);
  65.     int x = foo[0];
  66.     std::cout << foo[0] << " " << x << std::endl; // 1 1
  67. }
  68.  
Success #stdin #stdout 0s 2856KB
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Standard input is empty
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1 1
https://ideone.com/oxslQ
language:
C++ (gcc 8.3)
created:
14 years ago
visibility:
public

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