Book Image

Learn C# Programming

By : Marius Bancila, Raffaele Rialdi, Ankit Sharma
5 (1)
Book Image

Learn C# Programming

5 (1)
By: Marius Bancila, Raffaele Rialdi, Ankit Sharma

Overview of this book

The C# programming language is often developers’ primary choice for creating a wide range of applications for desktop, cloud, and mobile. In nearly two decades of its existence, C# has evolved from a general-purpose, object-oriented language to a multi-paradigm language with impressive features. This book will take you through C# from the ground up in a step-by-step manner. You'll start with the building blocks of C#, which include basic data types, variables, strings, arrays, operators, control statements, and loops. Once comfortable with the basics, you'll then progress to learning object-oriented programming concepts such as classes and structures, objects, interfaces, and abstraction. Generics, functional programming, dynamic, and asynchronous programming are covered in detail. This book also takes you through regular expressions, reflection, memory management, pattern matching, exceptions, and many other advanced topics. As you advance, you'll explore the .NET Core 3 framework and learn how to use the dotnet command-line interface (CLI), consume NuGet packages, develop for Linux, and migrate apps built with .NET Framework. Finally, you'll understand how to run unit tests with the Microsoft unit testing frameworks available in Visual Studio. By the end of this book, you’ll be well-versed with the essentials of the C# language and be ready to start creating apps with it.
Table of Contents (20 chapters)

The Queue<T> collection

A queue is a linear data structure where insertion and deletion of elements is performed from two different ends. A new item is added from the rear end of the queue and deletion of existing items occurs from the front. Therefore, the item to be inserted first will be the item to be deleted first. Because of this, the queue is called a First in, First Out (FIFO) collection. The following diagram depicts a queue, where Enqueue represents adding an item to the queue and Dequeue represents deleting an item from the queue:

Figure 7.5 – The conceptual representation of a queue.

In .NET, the class that implements a generic queue is Queue<T>. Similarly, with Stack<T>, there are overloaded constructors that allow us to create an empty queue or a queue initialized with elements from an IEnumerable<T> collection. Take a look at the following code snippet, where we are creating a queue of strings with three initial...