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

Go modules

Go modules were first introduced in Go version 1.11. At the time of writing, the latest Go version is 1.13. Although the general idea behind Go modules will remain the same, some of the presented details might change in future versions of Go.

A Go module is like a Go package with a version. Go uses semantic versioning for versioning modules. This means that versions begin with the letter v followed by the version number. Therefore, you can have versions such as v1.0.0, v1.0.5, and v2.0.2. The v1, v2, or v3 part signifies the major version of a Go package that is usually not backwards compatible. This means that if your Go program works with v1, it will not necessarily work with v2 or v3 – it might work, but you cannot count on it.

The second number in a version is about features. Usually v1.1.0 has more features than v1.0.2 or v1.0.0, while being compatible...