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  1.     #include <iostream>
  2. 	#include <tuple>
  3. 	using namespace std;
  4.  
  5.     // bar : does something with an arbitrary tuple
  6.     // (no variadic template arguments)
  7. 	template <class Tuple>
  8. 	void bar(Tuple t)
  9. 	{
  10.         // .... do something with the tuple ...
  11. 		std::cout << std::tuple_size<Tuple>::value;
  12. 	}
  13.  
  14.     // foo : takes a function pointer and an arbitrary number of other
  15.     // arguments
  16. 	template <class Func, typename... Ts>
  17. 	void foo(Func f, Ts... args_in)
  18. 	{
  19.         // construct a tuple containing the variadic arguments
  20. 		std::tuple<Ts...> t = std::make_tuple(args_in...);
  21.  
  22.         // pass this tuple to the function f
  23. 		f(t);
  24. 	}
  25.  
  26. 	int main()
  27. 	{
  28.         // this is not highly refined; you must provide the types of the
  29.         // arguments (any suggestions?)
  30. 		foo(bar<std::tuple<int, const char *, double>>, 123, "foobar", 43.262);
  31. 		return 0;
  32. 	}
Success #stdin #stdout 0s 3456KB
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https://ideone.com/8uGGOs
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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