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Mastering Go

You're reading from   Mastering Go Leverage Go's expertise for advanced utilities, empowering you to develop professional software

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Product type Paperback
Published in Mar 2024
Publisher Packt
ISBN-13 9781805127147
Length 736 pages
Edition 4th Edition
Languages
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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 (19) Chapters Close

Preface 1. A Quick Introduction to Go FREE CHAPTER 2. Basic Go Data Types 3. Composite Data Types 4. Go Generics 5. Reflection and Interfaces 6. Go Packages and Functions 7. Telling a UNIX System What to Do 8. Go Concurrency 9. Building Web Services 10. Working with TCP/IP and WebSocket 11. Working with REST APIs 12. Code Testing and Profiling 13. Fuzz Testing and Observability 14. Efficiency and Performance 15. Changes in Recent Go Versions 16. Other Books You May Enjoy
17. Index
Appendix: The Go Garbage Collector

Go packages

Everything in Go is delivered in the form of packages. A Go package is a Go source file that begins with the package keyword, followed by the name of the package.

Note that packages can have structure. For example, the net package has several subdirectories, named http, mail, rpc, smtp, textproto, and url, which should be imported as net/http, net/mail, net/rpc, net/smtp, net/textproto, and net/url, respectively.

Apart from the packages of the Go standard library, there are external packages that are imported using their full address and that should be downloaded on the local machine, before their first use. One such example is https://github.com/spf13/cobra, which is stored in GitHub.

Packages are mainly used for grouping related functions, variables, and constants so that you can transfer them easily and use them in your own Go programs. Note that apart from the main package, Go packages are not autonomous programs and cannot be compiled into executable files...

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