Loading Environment Variables

With the package from "github.com/joho/godotenv" it is very easy to load Environment Variables from a .env file.

E.g. we have a .env file with an API key:

API=123-456-XXX-789

We want to load it to our Go Program and can do it easily:

func main() {
    // Load will read your env file(s) and load them into ENV for this process.
    // If you call Load without any args it will default to loading .env in the current path.
    err := godotenv.Load()
    
    if err != nil {
        // Fatalf is equivalent to [Printf] followed by a call to os.Exit(1)
        log.Fatalf("err loading: %v", err)
    }
    
    // Get the value of the env variable by passing its variable name
    api_key := os.Getenv("API")
}

This way, our API Key is loaded from the .env file and stored inside our api_key variable.