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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2009, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id: HashSet.scala 16893 2009-01-13 13:09:22Z cunei $
package scalax.collection.mutable
import generic.{SetTemplate, SetFactory, AddableBuilder}
/** Factory object for `HashSet` class */
object HashSet extends SetFactory[HashSet] {
/** The empty set of this type */
def empty[A] = new HashSet[A]
}
/** This class implements mutable sets using a hashtable.
*
* @author Matthias Zenger
* @author Martin Odersky
* @version 2.0, 31/12/2006
*/
@serializable
class HashSet[A]
extends Set[A]
with SetTemplate[HashSet, A]
with FlatHashTable[A] {
def contains(elem: A): Boolean = containsEntry(elem)
def +=(elem: A) { addEntry(elem) }
def -=(elem: A) { removeEntry(elem) }
override def clear() = super.clear()
override def newBuilder[B]: generic.Builder[HashSet, B] =
new AddableBuilder[HashSet, B](HashSet.empty)
override def clone(): HashSet[A] = new HashSet[A] ++ this
}
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