// https://www.joeshaw.org/dont-defer-close-on-writable-files/
func helloNotes() error {
	f, err := os.Create("/home/joeshaw/notes.txt")
	if err != nil {
		return err
	}
	defer f.Close()

	if err = io.WriteString(f, "hello world"); err != nil {
		return err
	}

	return f.Sync()
}