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

HTTP Methods

Up to this point, you've checked the results of your exercises and activities through your web browser, just visiting an address, your localhost, and getting some results back in the form of a web page. This way of consuming an HTTP server utilizes what is known as the GET method. You have seen the methods when you worked with the HTTP clients, which are the only way to use anything other than GET or POST. Through your web browser, however, you can also use the POST method, which is often used in order to send form data. It is possible to send form data through GET, but this method pollutes the URL with parameters and has some limitations in terms of the size of the data that can be sent.

There are other methods that are often used, these being PUT and DELETE, but you need a specific client to utilize them. That is why a set of these four methods is used in order to build what is called a REST API. There are other methods, but it is beyond the scope of this book...