Technology Change: .Net to Scala(randonom.com)

    scala> val list = List(9, 7, 5, 10, 11)
    list: List[Int] = List(9, 7, 5, 10, 11)

    scala> list.sum
    res0: Int = 42

    scala> list.sorted
    res1: List[Int] = List(5, 7, 9, 10, 11)

    scala> val stringList = List("a", "b", "c")
    stringList: List[java.lang.String] = List(a, b, c)

    scala> stringList.sum
    <console>:9: error: could not find implicit value for
      parameter num:      Numeric[java.lang.String]
              stringList.sum
                         ^
    scala> val bitSet = collection.immutable.BitSet(1,2,3,4)
    bitSet: scala.collection.immutable.BitSet = BitSet(1, 2, 3, 4)

    scala> bitSet.map(_ + 1) // the result is still a BitSet
    res3: scala.collection.immutable.BitSet = BitSet(2, 3, 4, 5)

    scala> bitSet.map(_.toString) // the result is not a BitSet
    res4: scala.collection.immutable.Set[java.lang.String] = Set(1, 2, 3, 4)

    scala> map.map(kv => (kv._1 + 1, kv._2 + 1)) // result is still a Map
    res7: scala.collection.immutable.Map[Int,Int] = Map(2 -> 3, 4 -> 5)

    scala> map.map(kv => kv._1) // result will not be a map
    res8: scala.collection.immutable.Iterable[Int] = List(1, 3)