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. Check out my flagship Udemy course - 12-hour full-stack app build with automation tests, Vue.js, .NET Core, and SQL (Use Promo Code STACK21) ▬▬▬▬▬▬ 🎒 Udemy Course 🎒 ▬▬▬▬▬▬ Learn Full Stack Development with .NET and Vue.js in 2021! ►►► bit.ly/wesd-udemy ▬▬▬▬▬▬ 👋 Get in Touch! 👋 ▬▬▬▬▬▬ Facebook Group ► https://bit.ly/productive-dev-fb My Twitter ► https://bit.ly/wesd-twitter My LinkedIn ► https://bit.ly/wesd-linkedin ▬▬▬▬▬▬ 🕘 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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