fork download
copy 
  1. #include <array>
  2. #include <iostream>
  3. #include <string>
  4.  
  5. namespace detail
  6. {
  7. 	template<typename T>
  8. 	std::string
  9. 	to_string(T&& arg)
  10. 	{
  11. 		return std::string(std::forward<T>(arg));
  12. 	}
  13. }
  14.  
  15. template<typename... Args>
  16. std::array<std::string, sizeof...(Args)>
  17. ToStringArray(Args... args)
  18. {
  19. 	using detail::to_string;
  20. 	using std::to_string;
  21. 	std::array<std::string, sizeof...(Args)> unpack = {to_string(args)...};
  22. 	return unpack;
  23. }
  24.  
  25. int main()
  26. {
  27. 	auto Print = [](const auto &array)
  28. 		{
  29. 			std::cout << "Print array with size " << array.size() << std::endl;
  30. 			for (auto &arg : array)
  31. 			{
  32. 				if (arg.empty())
  33. 				{
  34. 					std::cout << "empty string" << std::endl;
  35. 					continue;
  36. 				}
  37. 				std::cout << arg << std::endl;
  38. 			}
  39. 		};
  40.  
  41. 	Print(ToStringArray(1u, "2", 0.3));;
  42. 	Print(ToStringArray(std::string("")));
  43. 	Print(ToStringArray());
  44.  
  45. 	return 0;
  46. }
Success #stdin #stdout 0s 3460KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Print array with size 3
1
2
0.300000
Print array with size 1
empty string
Print array with size 0
https://ideone.com/UjPPDc
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!