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All LessonsFree Lessons (5)

Getting Started

Who This Course is For What Are Design Patterns?Challenges with Design Patterns Unique Approach of This Course UML Conventions Used in the Course

SOLID Principles and Their Importance

Introduction to SOLID Principles What’s the Single Responsibility Principle?The Importance of the Single Responsibility Principle The Concept of Class Cohesion What’s the Open-Closed Principle?Implementing the Open-Closed Principle Considerations for the Open-Closed Principle What’s the Liskov Substitution Principle?Implementing the Liskov Substitution Principle Violation of the Liskov Substitution Principle What’s the Interface Segregation Principle?Importance of the Interface Segregation Principle When is NotImplementedException Appropriate?Considerations for the Interface Segregation Principle What’s the Dependency Inversion Principle?Implementation of the Dependency Inversion Principle Benefits of the Dependency Inversion Principle Quiz: SOLID Principles

Applications of Design Patterns

Introduction to Applications of Design Patterns Selecting Object Implementation at Runtime Replicating Complex Objects Using Large Numbers of Objects Reusing the Same Object Instance Dealing with Incompatible Code Structures Adding New Functionality to Existing Objects Simplifying Complex Back-End Logic Developing a Multitier Application Building a Complex Object Hierarchy Implementing Complex Conditional Logic Facilitating Communication Between Objects Multistage Processing Encapsulating Complex Operations Ability to Undo an Action Traversing Complex Collections Creating a Family of Related Algorithms Summary of the Applications of Design Patterns Quiz: Common Programming Problems

Classifying the Design Patterns

Design Patterns and Their Categories

Creational Design Patterns

What are Creational Design Patterns?Factory Method: Introduction Factory Method: Implementation and Example Factory Method: Benefits and Caveats Abstract Factory: Introduction Abstract Factory: Implementation and Example Abstract Factory: Benefits and Caveats Builder: Introduction Builder: Implementation and Example Builder: Benefits and Caveats Prototype: Introduction Prototype: Implementation and Example Prototype: Benefits and Caveats Singleton: Introduction Singleton: Implementation and Example Singleton: Benefits and Caveats Quiz: Creational Design Patterns

Structural Design Patterns

What Are Structural Design Patterns?Adapter: Introduction Adapter: Implementation and Example Adapter: Benefits and Caveats Bridge: Introduction Bridge: Implementation and Example Bridge: Benefits and Caveats Composite: Introduction Composite: Implementation and Example Composite: Benefits and Caveats Decorator: Introduction Decorator: Implementation and Example Decorator: Benefits and Caveats Facade: Introduction Facade: Implementation and Example Facade: Benefits and Caveats Flyweight: Introduction Flyweight: Implementation and Example Flyweight: Benefits and Caveats Proxy: Introduction Proxy: Implementation and Example Proxy: Benefits and Caveats Quiz: Structural Design Patterns

Behavioral Design Patterns

What Are Behavioral Design Patterns?Command: Introduction Command: Implementation and Example Command: Benefits and Caveats Chain of Responsibility: Introduction Chain of Responsibility: Implementation and Example Chain of Responsibility: Benefits and Caveats Iterator: Introduction Iterator: Implementation and Example Iterator: Benefits and Caveats Mediator: Introduction Mediator: Implementation and Example Mediator: Benefits and Caveats Memento: Introduction Memento: Implementation and Example Memento: Benefits and Caveats Observer: Introduction Observer: Implementation and Example Observer: Benefits and Caveats State: Introduction State: Implementation and Example State: Benefits and Caveats Strategy: Introduction Strategy: Implementation and Example Strategy: Benefits and Caveats Template Method: Introduction Template Method: Implementation and Example Template Method: Benefits and Caveats Visitor: Introduction Visitor: Implementation and Example Visitor: Benefits and Caveats Quiz: Behavioral Design Patterns

Conclusion

Closing Thoughts

Appendix

Setting Up Local Development Environment

The Easiest Way to Learn Design Patterns in C#/

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Summary

Summary

Here’s a summary of what we’ve learned in the course.

We'll cover the following...

In this course, we’ve learned how to implement design patterns in C# programming language and how to identify situations where design patterns can be helpful. We’ve covered the following topics:

SOLID ...