Ric Messier - Beginning Rust Programming

1. Chapter 13
2. Chapter 15

1. Chapter 1
2. Chapter 2
3. Chapter 3
4. Chapter 4
5. Chapter 5
6. Chapter 6
7. Chapter 7
8. Chapter 8
9. Chapter 9
10. Chapter 10
11. Chapter 11
12. Chapter 12
13. Chapter 13
14. Chapter 14
15. Chapter 15

Ric Messier

Beginning Rust Programming

Copyright 2021 by John Wiley & Sons, Inc., Indianapolis, Indiana

Published simultaneously in Canada

ISBN: 978-1-119-71297-8
ISBN: 978-1-119-71298-5 (ebk)
ISBN: 978-1-119-71287-9 (ebk)

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RIC MESSIER is an author, consultant, and educator who holds CCSP, GCIH, GSEC, CEH, and CISSP certifications and has published several books on information security and digital forensics. With decades of experience in information technology and information security, Ric has held the varied roles of programmer, system administrator, network engineer, security engineering manager, VoIP engineer, consultant, and professor. He is currently a Principal Consultant with FireEye Mandiant.

JESSICA ROCCHIO has been in the information technology industry for over a decade and is currently an incident response consultant at Mandiant. Over the last few years, she has worked with various programming languages. She has spent most of her career in incident response, forensics, intelligence, insider threats, and vulnerability management. Jessica has worked on a wide range of incidents, including espionage, cybercrime, fraud, data theft, and insider threats.

Without my tech editor, Jessica, and my project editor, Kim, I might not have made it through this book, so many thanks to them!

Save me from another hello, world book. Don't make me have to skim or skip through a half dozen chapters before I can get to something that's going to be useful to me. Or you, in this case. I can't tell you the number of programming books I've purchased over the decades, hoping to actually learn the language, only to end up just not using the book because it wasn't presented in a way that made a lot of sense to me. Instead of a dry explanation of how the language is constructed so you can try to put it all together in meaningful ways yourself, the purpose of this book is to jump straight into writing hopefully interesting or useful programs. Once we have the program, we can take a look at how it's constructed. You'll be learning by doingor learning by example, if you prefer. I hope you'll find this a more useful and practical way of learning Rust.

Rust is an interesting language, as it turns out. Like so many other languages, it claims a C-like syntax, which is roughly correct but misses out on many important elements. Where Rust really shines is where C has introduced bad behavior in programming practices. This is more apparent as more have been using C as a language. Where C provides you with the gun and the bullets to shoot yourself in the foot, Rust provides you with necessary protections to keep you from injuring yourself or, from the perspective of the application, keeps the application from crashing. Rust is focused on protecting the memory space of the program, in part to provide a better ability for concurrent programming. After all, Rust is considered to be a systems programming language, meaning it is intended for applications that are lower level than those that a user directly interacts with.

In addition to protections provided to the programmer, Rust has a reasonably active community that can be used not only for support but also to get additional functionality for your programs. There are a lot of third-party libraries. These libraries can make your life easier by introducing you to functionality without you needing to write it yourself.

The idea behind this book is to introduce you to Rust in context, rather than via snippets that, by themselves, don't work. You need all the surround to fully understand what is happening in the program. You'll find this out when you are looking at example code sometimes. This is true with the Rust documentation: it's like you need to fully understand the language to understand the examples you are looking at. This book doesn't take that approach. It assumes that you don't know the language, so every line in every program is explained in as much detail as is necessary to pull it all apart, since Rust can be a dense language in some ways. This means single lines can pack a lot of meaning and functionality.