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  1. #include <iostream>
  2. #include <type_traits>
  3. #include <vector>
  4. using namespace std;
  5.  
  6. template <class T>
  7. class Container
  8. {
  9.     public:
  10.     template <class UR = T>
  11.     void Add(UR&& object)
  12.     {
  13.         static_assert(std::is_same<std::remove_reference_t<UR>, T>::value, "UR and T should be the same!");
  14.          m_Vector.push_back(std::forward<UR>(object));
  15.     }
  16.     void AddNonUR(T&& object)
  17.     {
  18.     	 m_Vector.push_back(std::forward<T>(object));
  19.     }
  20.     std::vector<T> m_Vector;
  21. };
  22.  
  23. class Data
  24. {
  25.     public:
  26.     int x;
  27.     int y;
  28. };
  29.  
  30. int main() {
  31.     Container<Data> list;
  32.     Data d;
  33.     list.Add(d);
  34.     // list.AddNonUR(d); // Does not compile
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0s 16064KB
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https://ideone.com/6aPLt6
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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