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  1. #include <iostream>
  2. #include <vector>
  3. #include <tuple>
  4. using namespace std;
  5.  
  6. template<typename T, T ...ts>
  7. struct value_list
  8. {
  9.     //Get individual value
  10.     template<int ix>
  11.     static constexpr auto get()
  12.     { return std::get<ix>(std::make_tuple(ts...)); }
  13.  
  14.     //Get a container
  15.     template<typename Container>
  16.     static auto get_container() {return Container{ts...};}
  17.  
  18.     template<T new_val>
  19.     constexpr auto push_back()
  20.     {return value_list<T, ts..., new_val>();}
  21.  
  22.     template<T new_val>
  23.     constexpr auto push_front()
  24.     {return value_list<T, new_val, ts...>();}
  25. };
  26.  
  27. int main() {
  28.     value_list<int, 5, 4, 12> vl;
  29. 	std::cout << vl.get<1>() << std::endl;
  30.  
  31. 	auto v2 = vl.push_back<33>();
  32. 	std::cout << v2.get<3>() << std::endl;
  33.  
  34. 	for(auto val : v2.get_container<std::vector<int>>())
  35. 		std::cout << val << " ";
  36.  
  37. 	std::cout << std::endl;
  38.  
  39. 	// your code goes here
  40. 	return 0;
  41. }
Success #stdin #stdout 0s 3412KB
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stdin
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Standard input is empty
stdout
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4
33
5 4 12 33
https://ideone.com/IuAELw
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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