Scala example source code file (withIndex.scala)

This example Scala source code file (withIndex.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, array, iterator, list, list, nil, stream, stream, test, test

The Scala withIndex.scala source code

object Test {
  def main(args: Array[String]) = {
    val ary: Array[String] = Array("a", "b", "c")
    val lst: List[String] = List("a", "b", "c")
    val itr: Iterator[String] = lst.iterator
    val str: Stream[String] = lst.iterator.toStream

    Console.println(ary.zipWithIndex.toList)
    Console.println(lst.zipWithIndex.toList)
    Console.println(itr.zipWithIndex.toList)
    Console.println(str.zipWithIndex.toList)
    assert {
      ary.zipWithIndex match {
        case _: Array[Pair[_,_]] => true
        case _ => false
      }
    }

    val emptyArray = new Array[String](0)
    val emptyList: List[String] = Nil
    val emptyIterator = emptyList.iterator
    val emptyStream: Stream[String] = Stream.empty

    Console.println(emptyArray.zipWithIndex.toList)
    Console.println(emptyList.zipWithIndex.toList)
    Console.println(emptyIterator.zipWithIndex.toList)
    Console.println(emptyStream.zipWithIndex.toList)
  }
}