Scala example source code file (Dummy.scala)

This example Scala source code file (Dummy.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

dummy, dummy, dummyoperators, dummyoperators, int, int, list, operators, seq, unit, unit

The Scala Dummy.scala source code

package scala.collection.parallel.benchmarks.generic




class Dummy(val in: Int) {
  var num = in
  override def toString = in.toString
  override def hashCode = in
  def dummy = num + in
  def one = "1".length
}


object DummyOperators extends Operators[Dummy] {
  val foreachFun = (a: Dummy) => {
    a
    ()
  }
  val reducer = (a: Dummy, b: Dummy) => {
    var i = 0
    if (a.in > b.in) {
      a.num = a.in + b.in + i
      a
    } else {
      b.num = a.in + b.in + i
      b
    }
  }
  private def rec(a: Int, b: Int): Int = {
    val result = if (b == 0) a else {
      rec(b, a - b * (a / b))
    }
    result + 1000
  }
  val mediumreducer = (a: Dummy, b: Dummy) => {
    var i = 0
    var sum = a.num + b.num
    b.num = rec(a.num, b.num)
    b
  }
  val filterer = (a: Dummy) => {
    a.in % 2 == 0
  }
  val mapper = (a: Dummy) => {
    a.num = a.dummy + a.num + a.in + a.one
    a
  }
  override val mapper2 = (a: Dummy) => {
    val x = 1
    new Dummy(a.in * -2 + x)
  }
  val heavymapper = (a: Dummy) => {
    var i = -100
    while (i < 0) {
      if (a.in < i) a.num += 1
      i += 1
    }
    a
  }
  val flatmapper = (a: Dummy) => {
    List(a, a, a, a, a)
  }
  val taker = (a: Dummy) => {
    a.in >= 0
  }
  val eachFun: Dummy => Unit = (d: Dummy) => {
    d.dummy
  }
  override val eachPairFun: ((Dummy, Dummy)) => Unit = p => {
    p._1.dummy
    p._2.dummy
  }
  override def sequence(sz: Int): Seq[Dummy] = {
    val pa = new collection.parallel.mutable.ParArray[Dummy](sz)
    for (i <- 0 until sz) pa(i) = new Dummy(i)
    pa
  }
}