Creational Design Patterns in Modern C++ - Application Framework with the Factory Method

The video tutorial addresses the issue of tight coupling in applications and introduces the factory method pattern to create instances of different document types without modifying the original application class. It demonstrates how to implement this pattern by creating a text application and adding a new spreadsheet document type. The tutorial explains the class relationships and the role of the factory method in deferring instantiation to child classes. It also covers memory management using smart pointers to prevent memory leaks, highlighting the use of unique pointers for non-shared instances.

How does the factory method defer the instantiation process to child classes?

What steps should be taken to prevent memory leaks when creating instances of documents?

What are the implications of using smart pointers in the application classes?