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  1. #include <iostream>
  2. #include <utility>
  3. #include <type_traits>
  4.  
  5.  
  6. template<typename T>
  7. T vmin(T&&t)
  8. {
  9. 	return std::forward<T>(t);
  10. }
  11.  
  12. template<typename T0, typename T1, typename... Ts>
  13. typename std::common_type<
  14. 	T0, T1, Ts...
  15. >::type vmin(T0&& val1, T1&& val2, Ts&&... vs)
  16. {
  17. 	if (val1 < val2)
  18. 		return vmin(val1, std::forward<Ts>(vs)...);
  19. 	else
  20. 		return vmin(val2, std::forward<Ts>(vs)...);
  21. }
  22.  
  23.  
  24. int main()
  25. {
  26. 	int x = 7;
  27. 	int y = 3;
  28. 	int& z0 = x;
  29. 	int& z1 = y;
  30. 	((z0<z1)?z0:z1)=2;
  31. // 	vmin(z0, z1) = 2; -- want this to work, return an lvalue, but cannot with common_type
  32. 	std::cout << x << "," << y << "\n";
  33. 	std::cout << vmin(3, 2, 0.9, 2, 5) << std::endl;
  34.  
  35. 	std::cout << vmin(3., 1.2, 1.3, 2., 5.2) << std::endl;
  36.  
  37. 	return 0;
  38. }
Success #stdin #stdout 0s 3296KB
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Standard input is empty
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7,2
0.9
1.2
https://ideone.com/7dYgS2
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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