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  1. #include <type_traits>
  2. #include <iostream>
  3. #include <vector>
  4. #include <array>
  5.  
  6. template <class Tv, class T, size_t cn>
  7. void push_back(std::vector<Tv> & v, std::array<T, cn> const & el)
  8. {
  9.   for (int i = 0; i < cn; ++i) {
  10.     v.push_back(el[i]);
  11.   }
  12. }
  13.  
  14.  
  15. template <class Tv, class T,
  16.          typename std::enable_if<std::is_assignable<Tv&, T>::value, bool>::type = 0>
  17. void push_back(std::vector<Tv> & v, T el)
  18. {
  19.   v.push_back(el);
  20. }
  21.  
  22.  
  23. int main()
  24. {
  25. 	std::array<float, 5> a{1, 2, 3, 4, 5};
  26. 	std::vector<double> v;
  27. 	push_back(v, a);
  28. 	push_back(v, 27);
  29. 	for (double el : v) {
  30. 		std::cout << el << "\t";
  31. 	}
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 15240KB
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Standard input is empty
stdout
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1	2	3	4	5	27
https://ideone.com/9Iyfnr
language:
C++14 (clang 8.0)
created:
5 years ago
visibility:
public

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