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

Your Go environment

This section will talk about finding out information about your current Go environment using the functions and the properties of the runtime package. The name of the program that will be developed in this section is goEnv.go and it will be presented in two parts.

The first part of goEnv.go is next:

package main 
 
import ( 
    "fmt" 
    "runtime" 
) 

As you will see in a while, the runtime package contains functions and properties that will reveal the desired information. The second code portion of goEnv.go contains the implementation of the main() function:

func main() { 
    fmt.Print("You are using ", runtime.Compiler, " ") 
    fmt.Println("on a", runtime.GOARCH, "machine") 
    fmt.Println("Using Go version", runtime.Version()) 
    fmt.Println("Number of CPUs:", runtime.NumCPU...