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


Collections are perfect for grouping values of the same type and purpose together. There is another way of grouping data together in Go for a different purpose. Often, a simple string, number, or Boolean doesn't fully capture the essence of the data you'll have.

For example, for our user map, a user was represented by their unique ID and their first name. That is rarely going to be enough details to be able to work with user records. The data you could capture about a person is almost infinite, such as their given, middle, and family names. Their preferred prefix and suffix, their date of birth, their height, weight, or where they work can also be captured. It would be possible to store this data in multiple maps, all with the same key, but that is hard to work with and maintain.

The ideal thing to do is collect all these different bits of data into a single data structure that you can design and control. That's what Go's struct type is: it&apos...