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

Timing out a goroutine

This section presents two very important techniques that will help you to time out goroutines. Put simply, these two techniques will save you from having to wait forever for a goroutine to finish its job, and they will give you full control over the amount of time that you want to wait for a goroutine to end. Both techniques use the capabilities of the handy select keyword combined with the time.After() function that you experienced in the previous section.

Timing out a goroutine – take 1

The source code of the first technique will be saved in timeOut1.go, and it will be presented in four parts.

The first part of timeOut1.go is shown in the following Go code:

package main 
import (