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Working on an example from Functional Programming in Scala, I'm working on Option#map2:
override def map2[A, B, C](fa: Option[A],fb: Option[B])(f: (A, B) => C): Option[C] = {
(fa, fb) match {
case (None, _) => None
case (_, None) => None
case (_, _) => Some(f(fa.get, fb.get)) // ru...