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

Exercises and links

  • Visit the Go site:
  • Visit the site of Docker:
  • Visit the Docker Hub site:
  • Go 2 Draft Designs:
  • Browse the Go documentation site:
  • Visit the documentation of the log package at
  • Visit the documentation of the log/syslog package at
  • Visit the documentation of the os package at
  • Have a look at, which is the documentation page of the gofmt tool that is used for formatting Go code.
  • Write a Go program that finds the sum of all command-line arguments that are valid numbers.
  • Write a Go program that finds the average value of floating-point numbers that are given as command-line arguments.
  • Write a Go program that keeps reading integers until it gets the word END as input.
  • Can you modify customLog.go in order to write its log data into two log files at the same time? You might need to read Chapter 8, Telling a UNIX System What to Do, for help.
  • If you are working on a Mac machine, check the TextMate editor at, as well as BBEdit at
  • Visit the documentation page of the fmt package at to learn more about verbs and the available functions.
  • Please visit to learn more about Go and Generics.