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Standard library for the Scala Programming Language
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.collection
package generic
import scala.language.higherKinds
/** A template for companion objects of Seq and subclasses thereof.
*
* @since 2.8
*/
abstract class SeqFactory[CC[X] <: Seq[X] with GenericTraversableTemplate[X, CC]]
extends GenSeqFactory[CC] with TraversableFactory[CC] {
/** This method is called in a pattern match { case Seq(...) => }.
*
* @param x the selector value
* @return sequence wrapped in an option, if this is a Seq, otherwise none
*/
def unapplySeq[A](x: CC[A]): Some[CC[A]] = Some(x)
}