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


A filesystem controls how data is named, stored, accessed, and retrieved on a device such as a hard drive, USB, DVD, or another medium. Each filesystem for a specific OS will specify its conventions for naming files, such as the length of the filename, the specific characters that can be used, how long the suffix or file extension can be, and more. There are some file descriptors or metadata about a file that most filesystems contain, such as file size, location, access permissions, date created, date modified, and more:

Figure 12.1: Filesystem metadata for a file

Files are generally placed in some sort of hierarchal structure. This structure typically consists of multiple directories and sub-directories. The placement of the files within the directories is a way to organize your data and get access to the file or directory:

Figure 12.2: Filesystem directory structure

As shown in Figure 12.2, the top-level directory is...