What are some real-world examples of design patterns?

What are some real-world examples of design patterns?

Design patterns are typical solutions to common problems in software design. Examples include Singleton, Observer, and Factory patterns.

Can you explain the Singleton pattern?

The Singleton pattern ensures a class has only one instance and provides a global point of access to it. It's useful for managing shared resources.

What about the Observer pattern?

The Observer pattern defines a one-to-many dependency between objects, so when one object changes state, all its dependents are notified and updated automatically.

Are there any specific use cases for these patterns?

Yes! The Singleton pattern is often used in logging, while the Observer pattern is commonly used in event handling systems.