Book Image

Mastering Go – Third Edition - Third Edition

By : Mihalis Tsoukalos
5 (2)
Book Image

Mastering Go – Third Edition - Third Edition

5 (2)
By: Mihalis Tsoukalos

Overview of this book

Mastering Go is the essential guide to putting Go to work on real production systems. This freshly updated third edition includes topics like creating RESTful servers and clients, understanding Go generics, and developing gRPC servers and clients. Mastering Go was written for programmers who want to explore the capabilities of Go in practice. As you work your way through the chapters, you’ll gain confidence and a deep understanding of advanced Go concepts, including concurrency and the operation of the Go Garbage Collector, using Go with Docker, writing powerful command-line utilities, working with JavaScript Object Notation (JSON) data, and interacting with databases. You’ll also improve your understanding of Go internals to optimize Go code and use data types and data structures in new and unexpected ways. This essential Go programming book will also take you through the nuances and idioms of Go with exercises and resources to fully embed your newly acquired knowledge. With the help of Mastering Go, you’ll become an expert Go programmer by building Go systems and implementing advanced Go techniques in your projects.
Table of Contents (17 chapters)
14
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15
Index

Updating the phone book application

In this section we will change the format that the phone application uses for storing its data. This time, the phone book application uses JSON all over. Additionally, it uses the cobra package for implementing the supported commands. As a result, all relevant code resides on its own GitHub repository and not in the ch06 directory of the GitHub repository of this book. The path of the GitHub repository is https://github.com/mactsouk/phonebook—you can git clone that directory if you want but try to create your own version if you have the time.

When developing real applications, do not forget to git commit and git push your changes from time to time to ensure that you keep a history of the development phase in GitHub or GitLab. Among other things, this is a good way to keep backups!

Using cobra

First, you need to create an empty GitHub repository and clone it:

$ cd ~/go/src/github.com/mactsouk
$ git clone git@github...