Software Patterns

Software patterns are reusable solutions to common software design problems. They provide a way to organize and structure code, making it more maintainable and understandable. Some common software patterns include:

1. Model-View-Controller (MVC) pattern: This pattern separates an application into three components: the model (data), the view (user interface), and the controller (logic). This separation of concerns makes it easier to change and maintain the code.
2. Singleton pattern: This pattern ensures that a class has only one instance and provides a global point of access to it. This can be useful for managing resources such as database connections.
3. Facade pattern: This pattern provides a simplified interface to a complex system. It allows the client to interact with the system in a simplified way without having to understand its complexity.
4. Strategy pattern: This pattern allows the client to choose from a set of algorithms at runtime. It promotes the use of composition over inheritance, making it easier to add new algorithms or change existing ones.
5. Observer pattern: This pattern allows objects to be notified when other objects change state. It's a way to implement publish-subscribe communication between objects.
6. Decorator pattern: This pattern allows new behavior to be added to an object dynamically by wrapping it in another object. This can be useful for adding functionality to existing classes without modifying their code.
7. Factory pattern: This pattern provides a way to create objects without specifying their concrete class. It promotes loose coupling between objects, making it easier to change the implementation of a class without affecting the client code.

These are just a few examples of software patterns, there are many more, such as Adapter, Command, Composite, Iterator, etc. Each pattern provides a different solution to a common problem and is useful in different situations.