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  1. #include <iostream>
  2. #include <string>
  3.  
  4. struct player_name_tag {} PLAYER_NAME;
  5. struct connection_timeout_tag {} CONNECTION_TIMEOUT;
  6.  
  7. template<class T>
  8. struct constref_wrapper {
  9. 	constref_wrapper(const T& x) noexcept
  10. 	: content(x) {}
  11.  
  12. 	const T& getValue() const noexcept {
  13. 		return content;
  14. 	}
  15.  
  16. 	private:
  17. 	const T& content;
  18. };
  19.  
  20. struct ResourceManager {
  21. 	static constref_wrapper<std::string> get(player_name_tag) {
  22. 		return constref_wrapper<std::string>(name);
  23. 	}
  24.  
  25. 	static constref_wrapper<int> get(connection_timeout_tag) {
  26. 		return constref_wrapper<int>(timeout);
  27. 	}
  28.  
  29. 	private:
  30. 	static std::string name;
  31. 	static int timeout;
  32. };
  33.  
  34. std::string ResourceManager::name    = "Rambo";
  35. int         ResourceManager::timeout = 100;
  36.  
  37. int main() {
  38. 	std::cout << ResourceManager::get(PLAYER_NAME).getValue() << std::endl;
  39. 	std::cout << ResourceManager::get(CONNECTION_TIMEOUT).getValue() << std::endl;
  40. }
Success #stdin #stdout 0s 4292KB
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Rambo
100
https://ideone.com/yInXJY
language:
C++14 (clang 8.0)
created:
8 years ago
visibility:
public

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