package o1.blood1

class BloodType(val abo: String, val rhesus: Boolean):

  override def toString = ???

  def hasSafeABOFor(recipient: BloodType) = ???

  def hasSafeRhesusFor(recipient: BloodType) = ???

  def canDonateTo(recipient: BloodType) = ???

  def canReceiveFrom(donor: BloodType) = ???

end BloodType

