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


We have studied why and how functions are an essential part of the Go programming language. We also discussed various features of functions in Go that make Go stand apart from other programming languages. Go has features that allow us to solve a lot of real-world problems. Functions in Go serve many purposes, including enhancing the usage and readability of code. We learned how to create and call functions. We studied the various types of functions used in Go and discussed scenarios where each of the function types can be used. We also expounded the concept of closures. Closures are essentially a type of anonymous function that can use variables declared at the same level as that at which the anonymous function was declared. We also discussed various parameters and return types and studied defer.

In the next chapter, we shall be exploring errors and error types and learning how to build custom errors, thus building a recovery mechanism to handle errors in Go.