Singleton Pattern (Gang of Four Design Patterns Series)
#designpatterns #dotnet #gangoffour
The Singleton Pattern is one of the Creational Patterns catalogued in the famous Gang of Four Design Patterns: Elements of Reusable Object-Oriented Software book by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides.
The Singleton Pattern has the unique distinction among design patterns of potentially being an anti-pattern. Due to the fact that a Singleton may provide global mutable state, control its own creation, access, and business logic, and be accessed statically to provide global access across all contexts, it can lead to tightly-coupled code that binds software to specific implementations and I/O. It is for such reasons that it is often difficult to write unit tests for clients of a Singleton.
In this series, we’ll be going through each of the patterns covered in the “Gang of Four” Design Patterns - Elements of Reusable Object-Oriented Software. Each video will use a real-world example, taking inspiration from food-based businesses. I’m including typical integrations in the form of mock databases, AMQP queues, email services, and loggers, as well as several features from C# 9.0. All of the code for this series is open source and available at the GitHub link below.
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▬▬▬▬▬▬ 🕘 T I M E S T A M P S 🕘 ▬▬▬▬▬▬
0:00 - Introduction to the Builder Pattern
1:23 - Motivation / Definition
7:15 - Real-World Code
▬▬▬▬▬▬ 📚 TOPICS OVERVIEW 📚 ▬▬▬▬▬▬
☁️ Design Patterns ☁️
► Singleton Pattern
► Singleton Anti Pattern
► Object Oriented Design
► Gang of Four
► Making Code Easy to Change
► OOP
► C#
► .NET 5.0
▬▬▬▬▬▬ 🔗 LINKS ▬▬▬▬▬▬
► GitHub repo for this project:
https://github.com/wesdoyle/design-pa...
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