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

The go build Tool

The go build tool takes Go source code and compiles it so it can be executed. When creating software, you write code in a human-readable programming language. Then, the code needs to be translated into a machine-readable format to execute. This is done by a compiler that compiles the machine instructions from the source code. To do this with Go code, you would use go build.

Exercise 17.01: Using the go build Tool

In this exercise, you will learn about the go build tool. This will take your Go source code and compile it into a binary. To use it, run the go build tool on the command line, as follows:

go build -o name_of_the_binary_to_create source_file.go

Let's get started:

  1. Create a new directory called Exercise17.01 on your GOPATH. Within that directory, create a new file called main.go:
  2. Add the following code to the file to create a simple Hello World program:
    package main
    import "fmt"
    func main() {