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  1. #include <functional>
  2. #include <iostream>
  3. #include <memory>
  4.  
  5. template <typename T>
  6. struct Message
  7. {
  8.     T a;
  9. };
  10.  
  11. template <typename T>
  12. class Connection
  13. {
  14.   typedef std::function<void(Message<T>&)> msg_handle;
  15.  
  16.   public:
  17.     void SetHandle(msg_handle handle)
  18.     {
  19.       handle_ = handle;
  20.     }
  21.  
  22.     void Run()
  23.     {
  24.       Message<T> t;
  25.       std::cout << "Run() from Connection" << std::endl;
  26.       handle_(t);
  27.     }
  28.  
  29.   private:
  30.     msg_handle handle_;
  31. };
  32.  
  33. template <typename T>
  34. class Server
  35. {
  36.   public:
  37.     void OnMessage(Message<T>& msg, std::shared_ptr<Connection<T>> remote)
  38.     {
  39.       std::cout << "OnMessage() from Server" << std::endl;
  40.     }
  41. };
  42.  
  43.  
  44. int main()
  45. {
  46.   auto server = std::make_shared<Server<int>>();
  47.   auto connection = std::make_shared<Connection<int>>();
  48.   connection->SetHandle([=](auto& m){ server->OnMessage(m, connection); });
  49.   connection->Run();
  50.   return 0;
  51. }
Success #stdin #stdout 0s 5656KB
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Run() from Connection
OnMessage() from Server
https://ideone.com/AwVLge
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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