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Standard library for the SubScript extension of the Scala Programming Language
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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package generic
import mutable.{ Builder, SetBuilder }
import scala.language.higherKinds
abstract class ImmutableSetFactory[CC[X] <: immutable.Set[X] with SetLike[X, CC[X]]]
extends SetFactory[CC] {
private[collection] def emptyInstance: CC[Any]
override def empty[A] = emptyInstance.asInstanceOf[CC[A]]
def newBuilder[A]: Builder[A, CC[A]] = new SetBuilder[A, CC[A]](empty[A])
}