scala.collection.generic.ParFactory#GenericCanCombineFrom

class GenericCanCombineFrom[A] extends GenericCanBuildFrom[A] with CanCombineFrom[CC[_], A, CC[A]]

A generic implementation of the CanCombineFrom trait, which forwards all calls to apply(from) to the genericParBuilder method of the parallel collection from , and calls to apply() to this factory.

Instance Constructors From scala.collection.generic.ParFactory.GenericCanCombineFrom ——————————————————————————–

new GenericCanCombineFrom()

(defined at scala.collection.generic.ParFactory.GenericCanCombineFrom)

Value Members From scala.collection.generic.ParFactory.GenericCanCombineFrom

def apply(): Combiner[A, CC[A]]

Creates a new builder from scratch.

  • returns
    • a builder for collections of type To with element type Elem .
  • Definition Classes
    • GenericCanCombineFrom → CanCombineFrom → GenericCanBuildFrom → CanBuildFrom
  • See also
    • scala.collection.breakOut

(defined at scala.collection.generic.ParFactory.GenericCanCombineFrom)

def apply(from: ParFactory.Coll): Combiner[A, CC[A]]

Creates a new builder on request of a collection.

  • from
    • the collection requesting the builder to be created.
  • returns
    • a builder for collections of type To with element type Elem . The collections framework usually arranges things so that the created builder will build the same kind of collection as from .
  • Definition Classes
    • GenericCanCombineFrom → CanCombineFrom → GenericCanBuildFrom → CanBuildFrom

(defined at scala.collection.generic.ParFactory.GenericCanCombineFrom)

Value Members From Implicit scala.collection.parallel.CollectionsHaveToParArray ——————————————————————————–

def toParArray: ParArray[T]

  • Implicit information
    • This member is added by an implicit conversion from GenericCanCombineFrom [A] to CollectionsHaveToParArray [GenericCanCombineFrom [A], T] performed by method CollectionsHaveToParArray in scala.collection.parallel. This conversion will take place only if an implicit value of type ( GenericCanCombineFrom [A]) ⇒ GenTraversableOnce [T] is in scope.
  • Definition Classes
    • CollectionsHaveToParArray (added by implicit convertion: scala.collection.parallel.CollectionsHaveToParArray)

Full Source:

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2010-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala
package collection
package generic

import scala.collection.parallel.ParIterable
import scala.language.higherKinds

/** A template class for companion objects of `ParIterable` and subclasses
 *  thereof. This class extends `TraversableFactory` and provides a set of
 *  operations to create `$Coll` objects.
 *
 *  @define coll parallel collection
 *  @define Coll `ParIterable`
 *  @since 2.8
 */
abstract class ParFactory[CC[X] <: ParIterable[X] with GenericParTemplate[X, CC]]
extends GenTraversableFactory[CC]
   with GenericParCompanion[CC] {

  //type EPC[T, C] = scala.collection.parallel.EnvironmentPassingCombiner[T, C]

  /** A generic implementation of the `CanCombineFrom` trait, which forwards
   *  all calls to `apply(from)` to the `genericParBuilder` method of the $coll
   * `from`, and calls to `apply()` to this factory.
   */
  class GenericCanCombineFrom[A] extends GenericCanBuildFrom[A] with CanCombineFrom[CC[_], A, CC[A]] {
    override def apply(from: Coll) = from.genericCombiner
    override def apply() = newBuilder[A]
  }
}