lift binary op to option (a la A: Semigroup => Option[A]: Monoid instance)

optionOp.scala

class Ring[A](o1: Option[A], f: (A, A) => A) {
  def or(o2: Option[A]) = (o1, o2) match {
    case (Some(x), Some(y)) => Some(f(x, y))
    case (Some(_), None) => o1
    case (None, _) => o2
  }
  def and(o2: Option[A]) = (o1, o2) match {
    case (Some(x), Some(y)) => Some(f(x, y))
    case _ => None
  }
}

implicit class OptionApplyRing[A](o1: Option[A]) {
  def apply(f: (A, A) => A) = new Ring(o1, f)
}

// Use like Option(4) apply(_ + _)or Option(5) == Some(9)