Exercise 09.02 – using an external module within our module

Sometimes, in code, you need a unique identifier for an identity you provide to something. This unique identifier is often called a universally unique identifier (UUID). Google provides a package to create such a UUID. Let’s look at how to use it:

1. Create a new directory called myuuidapp and navigate into it:

   mkdir myuuidapp
   cd myuuidapp

2. Initialize a Go module named myuuidapp:

   go mod init myuuidapp

3. Verify that the go.mod file is created within your project directory with the module path set as myuuidapp.
4. Add a main.go file.
5. In main.go, add the main package name to the top of the file:

   package main

6. Now, add the imports we will use in this file:

   import (
       "fmt"
       "github.com/google/uuid"
   )

7. Create the main() function:

   func main() {

8. Generate a new UUID using the external module package:

       id := uuid.New...