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


This chapter presented some fundamental and advanced topics when using interfaces. We learned that Go's implementation of interfaces has some similarities with other languages; for example, an interface does not contain the implementation details of the behaviors it is representing, and an interface is the blueprint of the methods. The different types that implement the interface can differ in their implementation details. However, Go differs in how you implement an interface compared to other languages. We learned that the implementation is done implicitly and not explicitly, like other languages.

This concludes that Go does not do subclassing, so, for it to implement polymorphism, it uses interfaces. It allows an interface type to appear in different forms, such as a Shape interface appearing as a rectangle, square, or circle.

We also discussed a design pattern of accept interfaces and return structs. We demonstrated that this pattern allows for broader uses by...