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


In the previous chapter, we saw how to contact a remote server in order to obtain some information, but now we will dig into how the remote server is created, so if you already know how to request information, now you will see how to reply to these requests.

A web server is a program that uses the HTTP protocol, hence, the HTTP server, to accept requests from any HTTP client (web browser, another program, and so on) and respond to them with an appropriate message. When we browse the internet with our browser, it will be an HTTP server that will send an HTML page to our browser and we will be able to see it. In some other cases, a server will not return an HTML page but a different message, appropriate to the client.

Some HTTP servers provide an API that can be consumed by another program. Think of when you want to register with a website, and you are asked if you want to sign up through Facebook or Google. This means that the website you want to register with will...