WeatherForecast.scala

case class WeatherForecast(
  humidity: Percentage,
  windForecast: WindForecast,
  sunshine: Percentage,
  temperature: Temperature,
  chanceOfRain: ChanceOfRain
)
case class Temperature(degrees: Int, temperatureScale: String)
case class Percentage(percent: Double)
case class WindForecast(windSpeed: WindSpeed, direction: String)
case class WindSpeed(scale: String, speed: Int)
case class ChanceOfRain(chance: Percentage)
case class WeatherForecastList(asScalaList: List[WeatherForecast]) {
  def add(weatherForecast: WeatherForecast): WeatherForecastList =
    this.copy(weatherForecast :: asScalaList)
}