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  1. #include <iostream>
  2. #include <vector>
  3. #include <memory>
  4. #include <functional>
  5.  
  6. class EventManager
  7. {
  8. public:
  9. 	template<class F>
  10. 	void AddClient(const F& receiver)
  11. 	{
  12. 		clients.emplace_back(new EventClient<F>(receiver));
  13. 	}
  14.  
  15. 	void Emit()
  16. 	{
  17. 		for (const auto& client : clients)
  18. 		{
  19. 			client->Respond();
  20. 		}
  21. 	}
  22.  
  23. private:
  24. 	struct IEventClient {
  25. 		virtual ~IEventClient(){}
  26. 		virtual void Respond() = 0;
  27. 	};
  28.  
  29. 	template<class F>
  30. 	struct EventClient : IEventClient
  31. 	{
  32. 		const F& f;
  33. 		EventClient(const F& f) : f(f){}
  34. 		void Respond() override { f(); }
  35. 	};
  36.  
  37. 	std::vector<std::unique_ptr<IEventClient>> clients;
  38. };
  39.  
  40. struct Foo
  41. {
  42. 	void operator()() const { std::cout << "I'm a Foo!\n"; }
  43. };
  44.  
  45.  
  46. int main() {
  47. 	EventManager eventMan;
  48.  
  49. 	eventMan.AddClient([]{ std::cout << "yo\n"; });
  50.  
  51. 	std::function<void()> f = []{ std::cout << "I'm a std function!\n"; };
  52. 	eventMan.AddClient(f);
  53.  
  54. 	eventMan.AddClient(Foo());
  55.  
  56. 	eventMan.Emit();
  57. }
Success #stdin #stdout 0s 3432KB
comments (?)
stdin
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Standard input is empty
stdout
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yo
I'm a std function!
I'm a Foo!
https://ideone.com/2hC72x
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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