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  1. #include <iostream>
  2. #include <tuple>
  3. using namespace std;
  4.  
  5. struct Empty {};
  6.  
  7. template <class T>
  8. auto print_mem(const T& obj)
  9. {
  10. 	cout << &obj << " - " << (&obj + 1) << " (" << sizeof(obj) << ")" << endl;
  11. }
  12.  
  13.  
  14. int main() {
  15. 	std::tuple<int> t_i;
  16. 	std::tuple<Empty> t_e;
  17. 	std::tuple<int, Empty, Empty> t_iee;
  18. 	std::tuple<Empty, Empty, int> t_eei;
  19. 	std::tuple<int, Empty, Empty, int> t_ieei;
  20.  
  21. 	cout << "std::tuple<int>" << endl;
  22. 	print_mem(t_i);
  23. 	cout << endl;
  24.  
  25. 	cout << "std::tuple<Empty>" << endl;
  26. 	print_mem(t_e);
  27. 	cout << endl;
  28.  
  29. 	cout << "std::tuple<int, Empty, Empty" << endl;
  30. 	print_mem(t_iee);
  31. 	print_mem(std::get<0>(t_iee));
  32. 	print_mem(std::get<1>(t_iee));
  33. 	print_mem(std::get<2>(t_iee));
  34. 	cout << endl;
  35.  
  36. 	cout << "std::tuple<Empty, Empty, int>" << endl;
  37. 	print_mem(t_eei);
  38. 	print_mem(std::get<0>(t_eei));
  39. 	print_mem(std::get<1>(t_eei));
  40. 	print_mem(std::get<2>(t_eei));
  41. 	cout << endl;
  42.  
  43. 	cout << "std::tuple<int, Empty, Empty, int>" << endl;
  44. 	print_mem(t_ieei);
  45. 	print_mem(std::get<0>(t_ieei));
  46. 	print_mem(std::get<1>(t_ieei));
  47. 	print_mem(std::get<2>(t_ieei));
  48. 	print_mem(std::get<3>(t_ieei));
  49. 	cout << endl;
  50. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin
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Standard input is empty
stdout
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std::tuple<int>
0xff83ce64 - 0xff83ce68 (4)

std::tuple<Empty>
0xff83ce63 - 0xff83ce64 (1)

std::tuple<int, Empty, Empty
0xff83ce68 - 0xff83ce6c (4)
0xff83ce68 - 0xff83ce6c (4)
0xff83ce69 - 0xff83ce6a (1)
0xff83ce68 - 0xff83ce69 (1)

std::tuple<Empty, Empty, int>
0xff83ce6c - 0xff83ce74 (8)
0xff83ce70 - 0xff83ce71 (1)
0xff83ce6c - 0xff83ce6d (1)
0xff83ce6c - 0xff83ce70 (4)

std::tuple<int, Empty, Empty, int>
0xff83ce74 - 0xff83ce80 (12)
0xff83ce7c - 0xff83ce80 (4)
0xff83ce78 - 0xff83ce79 (1)
0xff83ce74 - 0xff83ce75 (1)
0xff83ce74 - 0xff83ce78 (4)
https://ideone.com/9pTHBq
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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