Scala example source code file (ClassTagTraversableFactory.scala)

This example Scala source code file (ClassTagTraversableFactory.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

a, canbuildfrom, cc, classtag, classtagtraversablefactory, genericcanbuildfrom, genericclasstagcompanion, genericclasstagtraversabletemplate, reflection, traversable

The ClassTagTraversableFactory.scala Scala example source code

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

package scala
package collection
package generic

import scala.language.higherKinds
import scala.reflect.ClassTag

/** A template for companion objects of `ClassTagTraversable` and
 *  subclasses thereof.
 *
 *  @define coll collection
 *  @define Coll `Traversable`
 *  @define genericCanBuildFromInfo
 *    The standard `CanBuildFrom` instance for $Coll objects.
 *    @author Aleksandar Prokopec
 *    @since 2.8
 */
abstract class ClassTagTraversableFactory[CC[X] <: Traversable[X] with GenericClassTagTraversableTemplate[X, CC]]
              extends GenericClassTagCompanion[CC] {

  class GenericCanBuildFrom[A](implicit tag: ClassTag[A]) extends CanBuildFrom[CC[_], A, CC[A]] {
    def apply(from: CC[_]) = from.genericClassTagBuilder[A]
    def apply = newBuilder[A]
  }
}