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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. template<class T>
  5. class vector_ref
  6. {
  7. public:
  8.     vector_ref(T *pData, int pN) {Data = pData; N = pN;};
  9.     T *Data;
  10.     int N;
  11.     vector_ref<T>& operator=(const std::vector<T> &v1)
  12.     {
  13.         for(int ii = 0; ii < N; ii++)
  14.         {
  15.             Data[ii] = v1[ii];
  16.         }
  17.         return *this;
  18.     }
  19.      std::vector<T> operator() ()
  20.     {
  21.         std::vector<T> v1(N);
  22.         for(int ii = 0; ii < N; ii++)
  23.         {
  24.             v1[ii] = Data[ii];
  25.         }
  26.         return v1;
  27.     }
  28.     // std::vector<T>& operator ()()
  29.     // {
  30.         // std::vector<T> v1(N);
  31.         // for(int ii = 0; ii < N; ii++)
  32.         // {
  33.             // v1[ii] = Data[ii];
  34.         // }
  35.         // return v1;
  36.     // }
  37.     // std::vector<T> tostring()
  38.     // {
  39.         // std::vector<T> v1(N);
  40.  
  41.     // }
  42. };
  43.  
  44. template<class T>
  45. void printVec(std::vector<T> v1)
  46. {
  47.     for(int ii = 0; ii < v1.size(); ii++)
  48.     {
  49.         std::cout << v1[ii] << std::endl;
  50.     }
  51. }
  52.  
  53. int main()
  54. {
  55.     std::vector<double> v,s;
  56.     v.push_back(1.0);
  57.     v.push_back(2.0);
  58.     v.push_back(3.0);
  59.  
  60.  
  61.     vector_ref<double> v_ref(&v[0],3);
  62.     //s=v_ref.operator();
  63.    printVec(v_ref()); // Compiler error
  64.  
  65.     return 0;
  66. }
Success #stdin #stdout 0s 3472KB
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https://ideone.com/4BUJIa
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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