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

Writing your own interfaces

In this section, you will learn how to develop your own interfaces, which is a relatively easy process as long as you know what you want to develop.

The technique is going to be illustrated using the Go code of myInterface.go, which will be presented shortly. The interface that is going to be created will help you to work with geometric shapes of the plane.

The Go code of myInterface.go is next:

package myInterface 
 
type Shape interface { 
    Area() float64 
    Perimeter() float64 
} 

The definition of the shape interface is truly straightforward as it requires that you implement just two functions, named Area() and Perimeter(), that both return a float64 value. The first function will be used to calculate the area of a shape in the plane and the second one to calculate the perimeter of a shape in the plane.

After that, you will need to install the...