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Scala example source code file (ParMap.scala)

This example Scala source code file (ParMap.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

cancombinefrom, combiner, combiner, genericparmaptemplate, genmap, k, map, pariterable, pariterable, parmap, parmap, parmapfactory, v, v

The Scala ParMap.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */


package scala.collection.parallel





import scala.collection.Map
import scala.collection.GenMap
import scala.collection.mutable.Builder
import scala.collection.generic.ParMapFactory
import scala.collection.generic.GenericParMapTemplate
import scala.collection.generic.GenericParMapCompanion
import scala.collection.generic.CanCombineFrom





/** A template trait for parallel maps.
 *  
 *  $sideeffects
 *  
 *  @tparam K    the key type of the map
 *  @tparam V    the value type of the map
 *  
 *  @author Aleksandar Prokopec
 *  @since 2.9
 */
trait ParMap[K, +V]
extends GenMap[K, V]
   with GenericParMapTemplate[K, V, ParMap]
   with ParIterable[(K, V)]
   with ParMapLike[K, V, ParMap[K, V], Map[K, V]]
{
self =>
  
  def mapCompanion: GenericParMapCompanion[ParMap] = ParMap
  
  //protected[this] override def newCombiner: Combiner[(K, V), ParMap[K, V]] = ParMap.newCombiner[K, V]
  
  def empty: ParMap[K, V] = new mutable.ParHashMap[K, V]
  
  override def stringPrefix = "ParMap"
}



object ParMap extends ParMapFactory[ParMap] {
  def empty[K, V]: ParMap[K, V] = new mutable.ParHashMap[K, V]
  
  def newCombiner[K, V]: Combiner[(K, V), ParMap[K, V]] = mutable.ParHashMapCombiner[K, V]
  
  implicit def canBuildFrom[K, V]: CanCombineFrom[Coll, (K, V), ParMap[K, V]] = new CanCombineFromMap[K, V]
  
}




























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