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

Debugging with Delve

Delve is a text-based debugger for Go programs written in Go. On macOS Mojave, you can download Delve as follows:

$ go get -u
$ ls -l ~/go/bin/dlv
-rwxr-xr-x  1 mtsouk  staff    16M Mar  7 09:04 /Users/mtsouk/go/bin/dlv

As Delve depends on a lot of Go modules and packages, the installation process is going to take a while. The Delve binary is installed on ~/go/bin. Executing dlv version will reveal information about its version:

$ ~/go/bin/dlv version
Delve Debugger
Version: 1.2.0
Build: $Id: 068e2451004e95d0b042e5257e34f0f08ce01466 $

Note that Delve also works on Linux and Microsoft Windows machines. Also note that Delve is an external program, which means that you do not need to include any packages in your Go programs for Delve to work.

As this section is a quick introduction to Delve, the following subsection will...