Book Image

The Go Workshop

By : Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó
Book Image

The Go Workshop

By: Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó

Overview of this book

The Go Workshop will take the pain out of learning the Go programming language (also known as Golang). It is designed to teach you to be productive in building real-world software. Presented in an engaging, hands-on way, this book focuses on the features of Go that are used by professionals in their everyday work. Each concept is broken down, clearly explained, and followed up with activities to test your knowledge and build your practical skills. Your first steps will involve mastering Go syntax, working with variables and operators, and using core and complex types to hold data. Moving ahead, you will build your understanding of programming logic and implement Go algorithms to construct useful functions. As you progress, you'll discover how to handle errors, debug code to troubleshoot your applications, and implement polymorphism using interfaces. The later chapters will then teach you how to manage files, connect to a database, work with HTTP servers and REST APIs, and make use of concurrent programming. Throughout this Workshop, you'll work on a series of mini projects, including a shopping cart, a loan calculator, a working hours tracker, a web page counter, a code checker, and a user authentication system. By the end of this book, you'll have the knowledge and confidence to tackle your own ambitious projects with Go.
Table of Contents (21 chapters)
Free Chapter
1. Variables and Operators
2. Logic and Loops

JSON loads

Not all HTTP servers are meant to be used by a browser and a human user. Very often, we have different software programs communicating with each other. These programs need to send messages to one another through a commonly accepted format, one of these being JSON. This stands for JavaScript Object Notation, which essentially means that it mimics how objects are created directly in JavaScript (another programming language). It is a simple format, not particularly verbose, and is easy to parse by a piece of software and easy to read for a human. As a user, however, you can use any one of the many tools to send and receive JSON payloads, two of the most common ones being Insomnia and Postman, which you can easily find online at and

They are both free and available for different platforms. You could also use curl as a command-line tool, but this becomes more complicated.

Exercise 15.08: Building a Server That Accepts...