Intro to Golang

Select a place where to store your project. If you don’t have one in mind, ~/code/ could be a good start.

cd ~/code/
mkdir todo-app

Creating a go module

You need to select a unique identifier for your project, called a module path, so that people can locate and import code from it. If you have a domain, a common convention is to use a URL that you have control over. I personally use github.com/AlexanderHOtt/<project name>, but if you have a domain you want to use, it could be <project name>.example.com.

go mod init github.com/<github username>/todo-app

You should have a new file named “go.mod” with similar contents below

go.mod

module github.com/0xdeis/todo-app

go 1.23.0

Hello World

Create a new file named “main.go”.

package main

import "fmt"

func main() {
    fmt.Println("Hello world")
}

All go files must be a part of a package. The default package is “main”.
Go import statements have the package name in double quotes.
The main function is the default entry point of the go program.

go run .

Hello world