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

From Go code to machine code

In this section, you will learn how Go code is converted into machine code in much more detail. The Go program that is going to be used in this example is named machineCode.go and it is going to be presented in two parts.

The first part of machineCode.go is as follows:

package main 
import ( 
func hello() { 

The second and final part of machineCode.go is as follows:

func main() { 

After that, you can see machineCode.go translated into machine code as follows:

$ GOSSAFUNC=main GOOS=linux GOARCH=amd64 go build -gcflags "-S" machineCode.go
# runtime
dumped SSA to /usr/local/Cellar/go/1.12.4/libexec/src/runtime/ssa.html
# command-line-arguments
dumped SSA to ./ssa.html
os.(*File).close STEXT dupok nosplit size=26 args=0x18 locals=0x0
    0x0000 00000 (<autogenerated...