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Mastering Go – Third Edition

You're reading from   Mastering Go – Third Edition Harness the power of Go to build professional utilities and concurrent servers and services

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Product type Paperback
Published in Aug 2021
Publisher Packt
ISBN-13 9781801079310
Length 682 pages
Edition 3rd Edition
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Author (1):
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Mihalis Tsoukalos Mihalis Tsoukalos
Author Profile Icon Mihalis Tsoukalos
Mihalis Tsoukalos
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Table of Contents (17) Chapters Close

Preface 1. A Quick Introduction to Go 2. Basic Go Data Types FREE CHAPTER 3. Composite Data Types 4. Reflection and Interfaces 5. Go Packages and Functions 6. Telling a UNIX System What to Do 7. Go Concurrency 8. Building Web Services 9. Working with TCP/IP and WebSocket 10. Working with REST APIs 11. Code Testing and Profiling 12. Working with gRPC 13. Go Generics 14. Other Books You May Enjoy
15. Index
Appendix A – Go Garbage Collector

Summary

This chapter presented two primary topics: functions and packages. Functions are first-class citizens in Go, which makes them powerful and handy. Remember that everything that begins with an uppercase letter is public. The only exception to this rule is package names. Private variables, functions, data type names, and structure fields can be strictly used and called internally in a package, whereas public ones are available to everyone. Additionally, we learned more about the defer keyword. Also, memorize that Go packages are not like Java classes—a Go package can be as big as it needs to be. Regarding Go modules, keep in mind that a Go module is multiple packages with a version.

Finally, this chapter discussed creating documentation, GitHub Actions and GitLab Runners, how the two CI/CD systems can help you automate boring processes and how to assign unique version numbers to your utilities.

The next chapter discusses system programming in general, as well as...

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