Book Image

C# Programming Cookbook

By : Dirk Strauss
Book Image

C# Programming Cookbook

By: Dirk Strauss

Overview of this book

During your application development workflow, there is always a moment when you need to get out of a tight spot. Through a recipe-based approach, this book will help you overcome common programming problems and get your applications ready to face the modern world. We start with C# 6, giving you hands-on experience with the new language features. Next, we work through the tasks that you perform on a daily basis such as working with strings, generics, and lots more. Gradually, we move on to more advanced topics such as the concept of object-oriented programming, asynchronous programming, reactive extensions, and code contracts. You will learn responsive high performance programming in C# and how to create applications with Azure. Next, we will review the choices available when choosing a source control solution. At the end of the book, we will show you how to create secure and robust code, and will help you ramp up your skills when using the new version of C# 6 and Visual Studio
Table of Contents (21 chapters)
C# Programming Cookbook
Credits
About the Author
Acknowledgements
About the Reviewer
www.PacktPub.com
Preface
Index

Open/closed principle


When creating classes, we need to ensure that the class prohibits any breaking modifications by needing to change internal code. We say that such a class is closed. If we need to change it somehow, we can do so by extending the class. This extensibility is where we say that the class is open for extensions.

Getting ready

You will create a class that determines the skills of a trooper by looking at the class of trooper. We will show you the way many developers create such a class and the way it can be created using the open/closed principle.

How to do it…

  1. Create a class called StarTrooper:

    public class StarTrooper
    {
        
    }
  2. To this class, add an enumerator called TrooperClass to identify the type of trooper we want to return the skills of. Also, create a List<string> variable to contain the skills of the specific trooper class. Finally, create a method called GetSkills that returns the specific set of skills for the given trooper class.

    The class is quite straightforward...