Behavioral Design Patterns in C++ - Pros and Cons-Template Method

The video tutorial explains the template method design pattern, highlighting its ability to reduce code duplication by factoring out common behavior into a base class. It allows partial customization of class behavior while maintaining control over the algorithm. The tutorial compares the template method with the strategy pattern, noting that the former uses inheritance and allows partial algorithm changes, while the latter uses composition for complete algorithm variation. The video concludes by emphasizing the template method's alignment with the open closed principle, enabling behavior modification without altering existing code.

What is a primary benefit of using the Template Method Design Pattern?

• It allows complete algorithm customization.

• It avoids code duplication by factoring out common behavior.

• It uses composition to vary an algorithm.

• It eliminates the need for subclasses.

How does the Template Method Design Pattern differ from the Strategy Pattern?

• Template Method uses composition, while Strategy uses inheritance.

• Template Method allows full algorithm changes, while Strategy allows partial changes.

• Template Method uses inheritance, while Strategy uses composition.

• Template Method is a replacement for conditional statements.

When should you use the Template Method Design Pattern?

• When you want to replace conditional statements.

• When you need to define new algorithms.

• When you need to provide different implementations for the entire behavior.

• When you want to avoid code duplication in a class hierarchy.

What principle does the Template Method Design Pattern help to implement?

• Single Responsibility Principle

• Open-Closed Principle

• Liskov Substitution Principle

• Interface Segregation Principle

What is a key feature of the Template Method Design Pattern in terms of algorithm control?

• It eliminates the need for a base class.

• It requires subclasses to implement the entire algorithm.

• It provides a mechanism for partial customization while maintaining control over the algorithm.

• It allows subclasses to completely redefine the algorithm.