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  1. #include <iostream>
  2. #include <memory>
  3.  
  4. namespace rocksdb {
  5. 	class DB {
  6. 	public:
  7. 		virtual ~DB() = default;
  8. 		virtual void doIt() = 0;
  9. 		static void Open(DB **db);
  10. 	};
  11.  
  12. 	class DB_Impl : public DB {
  13. 	public:
  14. 		DB_Impl() { std::cout << "Created" << std::endl; }
  15. 		~DB_Impl() { std::cout << "Destroyed" << std::endl; }
  16. 		void doIt() override {}
  17. 	};
  18.  
  19. 	void DB::Open(DB **db) {
  20. 		*db = new DB_Impl;
  21. 	}
  22. }
  23.  
  24. int main() {
  25.  
  26. 	std::unique_ptr<rocksdb::DB> _db;
  27.  
  28. 	rocksdb::DB* db;
  29. 	rocksdb::DB::Open(&db);
  30. 	_db = std::unique_ptr<rocksdb::DB>(db);
  31.  
  32. 	return 0;
  33. }
Success #stdin #stdout 0.01s 5520KB
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Standard input is empty
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Created
Destroyed
https://ideone.com/tHoFVr
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
public

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