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  1. #include <iostream>
  2. #include <functional>
  3. using namespace std;
  4.  
  5. class Bang
  6. {
  7. public:
  8. 	Bang(int i = 0) : m_val(i)
  9. 	{
  10. 		m_foo = [this] {std::cout << m_val << std::endl;};
  11. 	}
  12.  
  13. 	~Bang()
  14. 	{
  15. 		m_val = -1;
  16. 	}
  17.  
  18. 	void Foo()
  19. 	{
  20. 		m_foo();
  21. 	}
  22. private:
  23. 	int m_val;
  24. 	std::function<void ()> m_foo;
  25. };
  26.  
  27. Bang GetBang()
  28. {
  29. 	return Bang(100500);
  30. }
  31.  
  32. int main() {
  33. 	Bang b;
  34. 	b = GetBang();
  35. 	b.Foo();
  36. 	return 0;
  37. }
Success #stdin #stdout 0s 4356KB
comments (?)
stdin 
Standard input is empty
stdout 
-1
https://ideone.com/jJexu7
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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