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

Numeric data types

Go has native support for integers and floating-point numbers, as well as complex numbers. The subsections that follow will tell you more about each numeric type supported by Go.


Go offers support for four different sizes of signed and unsigned integers, named int8, int16, int32, int64; and uint8, uint16, uint32, and uint64, respectively. The number at the end of each type shows the number of bits used for representing each type.

Additionally, int and uint exist and are the most efficient signed and unsigned integers for your current platform. Therefore, when in doubt, use int and uint, but have in mind that the size of these types changes depending on the architecture.

The difference between signed...