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

The gofmt Tool

The gofmt tool is used to keep your code neat and consistently styled. When working on a large software project, an important, but often overlooked factor is code style. Having a consistent code style throughout your project is important for readability. When you have to read someone else's code, or even your own code months after writing it, having it in a consistent style makes you focus on the logic without much effort. Having to parse differing styles when reading code is just one more thing to worry about and leads to mistakes. To overcome this issue, Go comes with a tool to automatically format your code in a consistent way called gofmt. This means that, across your project, and even across other Go projects that use the gofmt tool, the code will be consistent. So, it will fix the formatting of the code by correcting the spacing and indentation, as well as trying to align the sections of your code.

Exercise 17.03: Using the gofmt Tool

In this exercise...