Scala example source code file (iterables.scala)

This example Scala source code file (iterables.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

app, app, indexoutofboundsexception, int, int, iterable, iterator, iterator, test, test

The Scala iterables.scala source code

object Test extends App {
  class Test(n: Int) extends Iterable[Int] {
    private var i = 0
    def iterator = new Iterator[Int] {
      def hasNext = i < n
      def next =
        if (hasNext) { val v = i; i += 1; v }
        else throw new IndexOutOfBoundsException("empty iterator")
    }
  }
  {
    val x = new Test(10)
    println(x.isEmpty)
    println(x.mkString(","))
  }
  {
    val x = new Test(10)
    println(x.filter(_ > 4).mkString(","))
  }
  {
    val x = new Test(10)
    val y = x.partition(_ % 2 == 0)
    println(y._1.mkString(","))
    println(y._2.mkString(","))
  }
}