Book Image

Mastering Go - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

Telling a UNIX System What to Do

In the previous chapter, we talked about two advanced, but somewhat theoretical, Go topics: interfaces and reflection. The Go code that you will find in this chapter is anything but theoretical!

The subject of this chapter is systems programming because, after all, Go is a mature systems programming language that was born out of frustration. Its spiritual fathers were unsatisfied with the programming language choices they had for creating systems software, so they decided to create a new programming language.

This chapter contains some interesting and somewhat advanced topics that are not included in Go Systems Programming (Packt Publishing, 2017).

This chapter focuses on the following topics:

  • UNIX processes
  • The flag package
  • The viper package
  • The cobra package
  • The use of the io.Reader and io.Writer interfaces
  • Handling UNIX signals in Go...