scala.collection.generic.CanCombineFrom

trait CanCombineFrom[-From, -Elem, +To] extends CanBuildFrom[From, Elem, To] with Parallel

A base trait for parallel builder factories.

• From
  • the type of the underlying collection that requests a builder to be created.
• Elem
  • the element type of the collection to be created.
• To
  • the type of the collection to be created.
• Source
  • CanCombineFrom.scala - Blame
  • CanCombineFrom.scala - History
• Since
  • 2.8

Abstract Value Members From scala.collection.generic.CanCombineFrom

abstract def apply(): Combiner[Elem, To]

Creates a new builder from scratch.

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

(defined at scala.collection.generic.CanCombineFrom)

abstract def apply(from: From): Combiner[Elem, To]

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
  • CanCombineFrom → CanBuildFrom (defined at scala.collection.generic.CanCombineFrom)

Full Source:

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

package scala
package collection
package generic

import scala.collection.parallel._

/** A base trait for parallel builder factories.
 *
 *  @tparam From  the type of the underlying collection that requests a
 *                builder to be created.
 *  @tparam Elem  the element type of the collection to be created.
 *  @tparam To    the type of the collection to be created.
 *  @since 2.8
 */
trait CanCombineFrom[-From, -Elem, +To] extends CanBuildFrom[From, Elem, To] with Parallel {
  def apply(from: From): Combiner[Elem, To]
  def apply(): Combiner[Elem, To]
}