How do the Template and Strategy design patterns differ?

Can you explain the differences between the Template and Strategy design patterns?

Sure! The Template pattern defines the skeleton of an algorithm in a method, allowing subclasses to redefine certain steps without changing the algorithm's structure. In contrast, the Strategy pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable.

Can you give me an example of each pattern?

Of course! For the Template pattern, consider a game where the main game loop is defined in a base class, but specific game types implement their own rules. For the Strategy pattern, think of a navigation app that can switch between different routing algorithms like fastest route or scenic route.

When should I use one over the other?

Use the Template pattern when you have a fixed algorithm structure but need flexibility in certain steps. Use the Strategy pattern when you want to switch between different algorithms dynamically.

Are there any drawbacks to using these patterns?

Yes, the Template pattern can lead to a rigid structure if overused, while the Strategy pattern can increase complexity due to the number of classes involved.