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#Design Patterns

• Strategy
• Observer
• Decorator
• Factory Method
• Abstract Factory
• Singleton
• Command
• Adapter
• Facade
• Template Method
• Iterator
• Composite
• State
• Proxy

• Encapsulates what varies.
• Favor composition over inheritance.
• Program to interfaces, not implementations.
• Strive for loosely coupled designs between objects that interact
• Classes should be open for extension but closed for modification.
• Depend on abstractions. Do not depend on concrete classes.
• Principle of Least Knowledge: talk only to your immediate friends.
• The Hollywood Principle: Don't call us, we'll call you.
• A class should have only one reason to change.

You need .NET 6 to run these examples.