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

Telling a UNIX System What to Do

This chapter teaches you about systems programming in Go. Systems programming involves working with files and directories, process control, signal handling, network programming, system files, configuration files, and file input and output (I/O). If you recall from Chapter 1, A Quick Introduction to Go, the reason for writing system utilities with Linux in mind is that often Go software is executed in a Docker environment—Docker images use the Linux operating system, which means that you might need to develop your utilities with the Linux operating system in mind. However, as Go code is portable, most system utilities work on Windows machines without any changes or with minor modifications. Among other things, this chapter implements two utilities, one that finds cycles in UNIX file systems and another that converts JSON data to XML data and vice versa. Additionally, in this chapter we are going to improve the phone book application with...