Scala Option Type Example
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object Main extends App {
def getLifeExpectancy(in: Option[Int]): Option[Double] = in match {
case Some(data) => Some(data + 45)
case None => None
}
val listOfAges = List(Some(67), None, Some(15), Some(33))
print(listOfAges.flatMap(getLifeExpectancy).sum)
}
Scala
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