Book Image

The Go Workshop

By : Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó
5 (1)
Book Image

The Go Workshop

5 (1)
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 got into the advanced uses of variables and types in Go. Real-world code gets complicated quickly because the real world is complicated. Being able to model the data accurately and keep that data logically organized in your code helps reduce the complexity of your code to a minimum.

You now know how to group similar data, either in a fixed-length ordered list using an array, in a dynamic length ordered list using a slice, or in a key-value hash using a map.

We learned to go beyond Go's core types and start to create custom types based either directly on the core types or by creating a struct, which is a collection of other types held in a single type and value.

There are times when you'll have type mismatches, so Go gives us the ability to convert compatible types so that they can interact in a type-safe way.

Go also lets us break free of its type safety rules and gives us full control. By using type assertions, we can accept any type...