Scala example source code file (FilterLight.scala)

This example Scala source code file (FilterLight.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, companion, cont, cont, filterlight, filterlight, havingresult, int, int, list, resettable, string, string

The Scala FilterLight.scala source code

package scala.collection.parallel.benchmarks.parallel_array


import scala.collection.parallel.benchmarks._


object FilterLight extends Companion {
  def benchName = "filter-light";
  def apply(sz: Int, parallelism: Int, what: String) = new FilterLight(sz, parallelism, what)
  override def comparisons = List("jsr")
  override def defaultSize = 10000
  
  val pred = (a: Cont) => check(a.in)
  val predjsr = new extra166y.Ops.Predicate[Cont] {
    def op(a: Cont) = check(a.in)
  }
  
  def check(n: Int) = {
    var res = n
//    var i = 1
//    while (i < 10) {
//      res += n % i
//      i += 1
//    }
    res % 2 == 0
  }
}

class FilterLight(sz: Int, p: Int, what: String)
extends Resettable(sz, p, what, new Cont(_), new Array[Any](_), classOf[Cont])
with HavingResult[Int] {
  def companion = FilterLight
  override def repetitionsPerRun = 250
  override val runs = 30
  runresult = -1
  
  def runpar = runresult = pa.filter(FilterLight.pred).size
  def runseq = runresult = sequentialFilter(FilterLight.pred, sz).size
  def runjsr = runresult = { jsrarr.withFilter(FilterLight.predjsr).all.size }
  def comparisonMap = collection.Map("jsr" -> runjsr _)
}