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)


Tuples are simple types with a lightweight syntax that can typically be used when you want to return multiple values from a function without defining an explicit type or without using out or ref parameters or when you want to pass multiple values to a method as a single object.

This aspect represents the key difference between anonymous types and tuples. The former is meant for use within the scope of a single method and cannot be passed as an argument or returned from a method. The latter are intended for this exact purpose.

In C#, there are two kinds of tuples:

  • Reference tuples, represented by the System.Tuple class
  • Value tuples, represented by the System.ValueTuple structure

In the next subsection, we will look at both of these types.

The Tuple class

Reference tuples were introduced in .NET Framework 4.0. The generic class, System.Tuple, can hold up to eight values of different types. Should you need tuples with more than eight values, you...