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  1. #include <iostream>
  2.  
  3. template<typename T>
  4. struct Wrapper
  5. {
  6. 	T &t;
  7. 	Wrapper(T &t)
  8. 	: t(t)
  9. 	{
  10. 	}
  11. 	void rebind(T &t)
  12. 	{
  13. 		this->~Wrapper();
  14. 		new (this) Wrapper(t);
  15. 	}
  16. };
  17.  
  18. int main()
  19. {
  20. 	int x = 7, y = 4;
  21. 	Wrapper<int> w = x;
  22. 	std::cout << x << " " << y << std::endl;
  23. 	w.t = 2;
  24. 	std::cout << x << " " << y << std::endl;
  25. 	w.rebind(y);
  26. 	std::cout << x << " " << y << std::endl;
  27. 	w.t = 14;
  28. 	std::cout << x << " " << y << std::endl;
  29. }
  30.  
Success #stdin #stdout 0s 3340KB
comments (?)
stdin
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Standard input is empty
stdout
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7 4
2 4
2 4
2 14
https://ideone.com/Jfd3nx
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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