Behavioral Design Patterns in C++ - Template Method - III

The video tutorial explains the template method design pattern, emphasizing the importance of clients only calling the template method and not its internal operations. It discusses the need to protect certain functions and prevent subclasses from overriding the template method. The tutorial highlights issues with method hiding in subclasses and suggests using virtual and final keywords to prevent this. It concludes with best practices for implementing template methods.

What is the primary role of clients in the template method design pattern?

• To create instances of the corresponding class and invoke the template method

• To directly call protected functions

• To modify the template method

• To override the internal operations

Why are certain functions made protected in the template method design pattern?

• To make them accessible to all subclasses

• To ensure clients can invoke them directly

• To prevent clients from invoking them directly

• To allow clients to modify them

What issue arises when a subclass provides its own implementation of a method from the base class?

• The subclass method is ignored

• The program runs without any issues

• The base class method is overridden unintentionally

• The subclass method becomes inaccessible

How can you prevent subclasses from overriding template methods?

• By removing them from the base class

• By declaring them as virtual and final

• By making them public

• By allowing subclasses to redefine them

What happens if a subclass attempts to redefine a final method?

• The method is ignored

• A compiler error occurs

• The method is overridden

• The program runs successfully