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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. class Bang
  5. {
  6. public:
  7. 	Bang(int i = 0) : m_val(i)
  8. 	{
  9. 		m_foo = [bang = *this] { std::cout << bang.m_val << std::endl; };
  10. 	}
  11.  
  12. 	~Bang()
  13. 	{
  14. 		m_val = -1;
  15. 	}
  16.  
  17. 	void Foo()
  18. 	{
  19. 		m_foo();
  20. 	}
  21. private:
  22. 	int m_val;
  23. 	std::function<void()> m_foo;
  24. };
  25.  
  26. Bang GetBang()
  27. {
  28. 	return Bang(100500);
  29. }
  30.  
  31. int main()
  32. {
  33. 	Bang b;
  34. 	b = GetBang();
  35. 	b.Foo();
  36. 	return 0;
  37. }
  38.  
Success #stdin #stdout 0s 4336KB
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Standard input is empty
stdout
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100500
https://ideone.com/LUDrBb
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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