I have experience struggling through these kinds of things andI know enough about the subject that I can understand why they did it that way.But my concern is that this should be an example that a beginner could understand, and they can't. There's too much depth exposed.Here's the example, which is written as a script:import scala.io.Source._case class Registrant(line: String) { val data = line.split(",") val first = data(0) val last = data(1) val email = data(2) val payment = data(3).toDouble}val data = """Bob,Dobbs,bob@dobbs.com,25.00Rocket J.,Squirrel,rocky@frostbite.com,0.00Bullwinkle...