scala for the impatient excercise 2.11

implicit class DateInterpolator(val sc: StringContext) extends AnyVal { 
	def date(args: Any*): LocalDate = {
		if (args.length != 3) throw new IllegalArgumentException("Need 3 inputs")
		else {
			try {
				var year = args(0).toString.toInt
				var month = args(1).toString.toInt
				var day = args(2).toString.toInt
				LocalDate.of(year, month, day)
			} catch {
				case _: NumberFormatException => throw new IllegalArgumentException("Number not given")
			}
		}
	}
}