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  1. #include <iostream>
  2. #include <utility>
  3.  
  4. template<typename Deleter>
  5. class ScopeGuard
  6. {
  7. private:
  8. 	bool active_;
  9. 	Deleter deleter_;
  10.  
  11. public:
  12. 	ScopeGuard() = delete;
  13. 	ScopeGuard(ScopeGuard const &) = delete;
  14. 	ScopeGuard(ScopeGuard &&) = delete;
  15. 	ScopeGuard & operator =(ScopeGuard const &) = delete;
  16. 	ScopeGuard & operator =(ScopeGuard &&) = delete;
  17.  
  18. 	ScopeGuard(Deleter deleter)
  19. 	:
  20. 		active_{true},
  21. 		deleter_(std::move(deleter))
  22. 	{}
  23.  
  24. 	~ScopeGuard() noexcept
  25. 	{
  26. 		if (active_) deleter_();
  27. 	}
  28.  
  29. 	void dismiss()
  30. 	{
  31. 		active_ = false;
  32. 	}
  33. };
  34.  
  35. template<typename Deleter>
  36. ScopeGuard<Deleter> make_scope_guard(Deleter deleter)
  37. {
  38. 	return {std::move(deleter)};
  39. }
  40.  
  41. int main()
  42. {
  43. 	auto && guard1 = make_scope_guard([] { std::cout << "guard1\n"; });
  44. 	auto && guard2 = make_scope_guard([] { std::cout << "guard2\n"; });
  45.  
  46. 	guard1.dismiss();
  47. }
Success #stdin #stdout 0s 3340KB
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guard2
https://ideone.com/0azGik
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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