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


In this chapter, we gained an understanding of how Go views and uses file permissions. We learned that file permissions can be represented as symbolic and octal notations. We discovered that the Go standard library has built-in support for opening, reading, writing, creating, deleting, and appending data to a file. We looked at the flag package and how it provides functionality to create command-line applications to accept arguments.

Using the flag package, we could also print out usage statements that pertained to our command-line application.

Then, we demonstrated how OS signals can impact our Go program; however, by using the Go standard library, we can capture OS signals and, if applicable, control how we want to exit our program.

We also learned that Go has a standard library for working with CSV files. In working with files previously, we saw that we can also work with files that are structured as CSV files. That Go CSV package provides the ability to iterate...