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 have looked at the different types of errors that you will encounter while programming, such as syntax, runtime, and semantic errors. We focused more on runtime errors. These errors are more difficult to debug.

We examined the difference between various language philosophies when it comes to dealing with errors. We have seen how Go's syntax for errors is simpler to understand compared to the exception handling that various languages are utilizing.

An error in Go is a value. Values can be passed around to functions. Any error can be a value as long as it implements the error interface type. We learned how easily we can create errors. We also learned that we should name our error values starting with Err followed by a descriptive camel case name.

Next, we discussed panics and the similarities between a panic and an exception. We also discovered that panics are pretty similar to exceptions; however, if panics are unhandled, they will cause the...