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

Generating documentation

Go offers the godoc tool, which allows you to view the documentation of your packages – provided that you have included some extra information in your files.

The general advice is that you should try to document everything but leave out obvious things. Put simply, do not say, "Here, I create a new int variable." It would be better to state the use of that int variable! Nevertheless, really good code does not usually need documentation.

The rule about writing documentation in Go is pretty simple and straightforward: in order to document something, you have to put one or more regular comment lines that start with // just before its declaration. This convention can be used to document functions, variables, constants, or even packages.

Additionally, you will notice that the first line of the documentation of a package of any size will appear...