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  1. template <typename T>
  2. struct foo;
  3.  
  4. template <typename... Types> 
  5. class Collection
  6. {
  7.  
  8. };
  9.  
  10. template <
  11.     template <typename...> class Container,
  12.     typename... Types>
  13. struct foo<Container<Types...>> : Types...
  14. {
  15.     int x;
  16. };
  17.  
  18. class ClassA 
  19. {
  20. public:
  21.     int val1;
  22. };
  23. class ClassB 
  24. {
  25. public:
  26.     int val2;
  27. };
  28.  
  29. int main()
  30. {
  31.     foo<Collection<ClassA, ClassB>> f;
  32.  
  33.     f.val1 = 10;
  34.     f.val2 = 20;
  35.     return 0;
  36. }
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https://ideone.com/8pc3xm
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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