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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.collection.immutable
import scala.collection.generic.SetProxyTemplate
/** <p>
* This is a simple wrapper class for <a href="Set.html"
* target="contentFrame"><code>scala.collection.immutable.Set</code></a>.
* </p>
* <p>
* It is most useful for assembling customized set abstractions
* dynamically using object composition and forwarding.
* </p>
*/
trait SetProxy[A] extends Set[A] with SetProxyTemplate[A, Set[A]]
{
override def thisCollection = this
private def newProxy[B >: A](newSelf: Set[B]): SetProxy[B] =
new SetProxy[B] { val self = newSelf }
override def empty = newProxy(self.empty)
override def + (elem: A) = newProxy(self + elem)
override def - (elem: A) = newProxy(self - elem)
}
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