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


Arrays are great, but their rigidity around size can cause issues. If you wanted to create a function that accepted an array and sorted the data in it, it could only work for one size of array. That requires you to create a function for each size of array. This strictness around size makes working with arrays feel like a hassle and unengaging. The flip side of arrays is that they are an efficient way of managing sorted collections of data. Wouldn't it be great if there were a way to get the efficiency of arrays but with more flexibility? Go gives you this in the form of slices.

A slice is a thin layer around arrays that let you have a sorted numeric indexed collection without you having to worry about the size. Underneath the thin layer is still a Go array, but Go manages all the details, such as how big an array to use, for you. You use a slice just like you would an array; it only holds values of one type, you can read and write to each element using [ and ], and they...