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

Node trees

A Go node is a struct with a large number of properties. You will learn more about defining and using Go structures in Chapter 4, The Uses of Composite Types. Everything in a Go program is parsed and analyzed by the modules of the Go compiler according to the grammar of the Go programming language. The final product of this analysis is a tree that is specific to the provided Go code and represents the program in a different way that is suited to the compiler rather than to the developer.

Please note that go tool 6g -W test.go does not work on newer Go versions. You should use go tool compile -W test.go instead.

This section will first use the following Go code, which is saved as nodeTree.go, as an example in order to see the kind of low-level information the go tool can provide us with:

package main 
import ( 
func main() {