Book Image

C# 7.1 and .NET Core 2.0 ??? Modern Cross-Platform Development - Third Edition

By : Mark J. Price
Book Image

C# 7.1 and .NET Core 2.0 ??? Modern Cross-Platform Development - Third Edition

By: Mark J. Price

Overview of this book

C# 7.1 and .NET Core 2.0 – Modern Cross-Platform Development, Third Edition, is a practical guide to creating powerful cross-platform applications with C# 7.1 and .NET Core 2.0. It gives readers of any experience level a solid foundation in C# and .NET. The first part of the book runs you through the basics of C#, as well as debugging functions and object-oriented programming, before taking a quick tour through the latest features of C# 7.1 such as default literals, tuples, inferred tuple names, pattern matching, out variables, and more. After quickly taking you through C# and how .NET works, this book dives into the .NET Standard 2.0 class libraries, covering topics such as packaging and deploying your own libraries, and using common libraries for working with collections, performance, monitoring, serialization, files, databases, and encryption. The final section of the book demonstrates the major types of application that you can build and deploy cross-device and cross-platform. In this section, you'll learn about websites, web applications, web services, Universal Windows Platform (UWP) apps, and mobile apps. By the end of the book, you'll be armed with all the knowledge you need to build modern, cross-platform applications using C# and .NET.
Table of Contents (31 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
2
Part 1 – C# 7.1
8
Part 2 – .NET Core 2.0 and .NET Standard 2.0
16
Part 3 – App Models
22
Summary
Index

Chapter 4 – Writing, Debugging, and Testing Functions


  1. What does the C# keyword void mean?

Answer: It indicates that a method has no return value.

  1. How many parameters can a method have?

Answer: A method with 16,383 parameters can be compiled, run, and called. Any more than that and an unstated exception is thrown at runtime. IL has predefined opcodes to load up to four parameters and a special opcode to load up to 16-bit (65,536) parameters. The best practice is to limit your methods to three or four parameters. You can combine multiple parameters into a new class to encapsulate them into a single parameter. You can find more information on this at the following site:http://stackoverflow.com/questions/12658883/what-is-the-maximum-number-of-parameters-that-a-c-sharp-method-can-be-defined-as

  1. In Visual Studio 2017, what is the difference between pressing F5, Ctrl + F5, Shift + F5, and Ctrl + Shift + F5?

Answer:F5 saves; compiles; runs; and attaches the debugger, Ctrl + F5 saves; compiles; and runs...