scala.collection.mutable.SetProxy.scala Maven / Gradle / Ivy
/*
* Scala (https://www.scala-lang.org)
*
* Copyright EPFL and Lightbend, Inc.
*
* Licensed under Apache License 2.0
* (http://www.apache.org/licenses/LICENSE-2.0).
*
* See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*/
package scala
package collection
package mutable
/** This is a simple wrapper class for [[scala.collection.mutable.Set]].
* It is most useful for assembling customized set abstractions
* dynamically using object composition and forwarding.
*
* @author Matthias Zenger
* @since 1
*/
@deprecated("proxying is deprecated due to lack of use and compiler-level support", "2.11.0")
trait SetProxy[A] extends Set[A] with SetProxyLike[A, Set[A]] {
override def repr = this
override def empty = new SetProxy[A] { val self = SetProxy.this.self.empty }
override def + (elem: A) = { self += elem ; this }
override def - (elem: A) = { self -= elem ; this }
def +=(elem: A) = { self += elem; this }
def -=(elem: A) = { self -= elem; this }
}