可继承单例模板类，测试

Demo/main.cpp

@@ -60,10 +60,12 @@ void test_csv()
 		std::stringstream str_stream(str_line);
 		while (std::getline(str_stream, str_grid, ','))
 		{
-			std::cout << str_grid << std::endl;
+			std::cout << str_grid << " ";
 		}
-		std::cout << std::endl;
+
+		std::cout << std::endl;	
 	}
+
 	file.close();
 }