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  1. #include <iostream>
  2. #include <utility>
  3.  
  4. using namespace std;
  5.  
  6. namespace details {
  7. 	template <class T1, class T2>
  8. 	struct tie{
  9. 		T1& first;
  10. 		T2& second;
  11.  
  12. 		tie(T1& x, T2& y) : first(x), second(y) {}
  13.  
  14. 		tie<T1, T2>& operator=(const pair<T1, T2>& rhs){
  15. 			first = rhs.first;
  16. 			second = rhs.second;
  17.  
  18. 			return *this;
  19. 		}
  20. 	};
  21. }
  22.  
  23. template <class T1, class T2>
  24. details::tie<T1, T2> tie(T1& x, T2& y) { 
  25. 	return details::tie<T1, T2>(x, y);
  26. } 
  27.  
  28. pair<int, int> test() {
  29.     return make_pair(13, 42);
  30. }
  31.  
  32. int main() {
  33. 	int a = 1, b = 2;
  34. 	int c = 3, d = 4;
  35.  
  36. 	details::tie<int, int>(a, b) = test();
  37. 	tie(c, d) = test();
  38.  
  39.  
  40. 	cout << a << ' ' << b << endl << c << ' ' << d << endl;
  41.  
  42. }
Success #stdin #stdout 0s 2740KB
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stdin
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Standard input is empty
stdout
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13 42
13 42
https://ideone.com/6TbUxM
language:
C++ 4.3.2 (gcc-4.3.2)
created:
9 years ago
visibility:
public

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