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  1. #include <iostream>
  2. #include <array>
  3. #include <utility>
  4. #include <initializer_list>
  5.  
  6. template <typename T>
  7. class A
  8. {
  9. public:
  10.     A(std::initializer_list<std::array<T, 1>> i);
  11.  
  12.     virtual ~A() = default;
  13. };
  14.  
  15. template <typename T>
  16. A<T>::A(std::initializer_list<std::array<T, 1>> i)
  17. {
  18. 	std::cout << i.size() << std::endl;
  19. }
  20.  
  21. template <typename T>
  22. class B : public A<T>
  23. {
  24. public:
  25.     template <typename... Args>
  26.     B(Args&&... args);
  27. };
  28.  
  29. template <typename T>
  30. template <typename... Args>
  31. B<T>::B(Args&&... args) : A<T>{std::array<T, 1>{std::forward<Args>(args)}...}
  32. {
  33.  
  34. }
  35.  
  36. int main()
  37. {
  38. 	B<int> b{ 1, 2, 3, 4, 5, 6, 7 };
  39. 	return 0;
  40. }
Success #stdin #stdout 0s 3340KB
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https://ideone.com/StG4RT
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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