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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2006-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.collection
package generic
import mutable.{Builder, SetBuilder}
/** A template for companion objects of Set and subclasses thereof.
*
* @since 2.8
*/
abstract class SortedSetFactory[CC[A] <: SortedSet[A] with SortedSetLike[A, CC[A]]] {
type Coll = CC[_]
def empty[A](implicit ord: Ordering[A]): CC[A]
def apply[A](elems: A*)(implicit ord: Ordering[A]): CC[A] = (newBuilder[A](ord) ++= elems).result
def newBuilder[A](implicit ord: Ordering[A]): Builder[A, CC[A]] = new SetBuilder[A, CC[A]](empty)
implicit def newCanBuildFrom[A](implicit ord : Ordering[A]) : CanBuildFrom[Coll, A, CC[A]] = new SortedSetCanBuildFrom()(ord);
class SortedSetCanBuildFrom[A](implicit ord: Ordering[A]) extends CanBuildFrom[Coll, A, CC[A]] {
def apply(from: Coll) = newBuilder[A](ord)
def apply() = newBuilder[A](ord)
}
}
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