scala.collection.mutable.Set.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
import generic._
/** A generic trait for mutable sets.
* $setNote
* $setTags
*
* @since 1.0
* @author Matthias Zenger
* @define Coll `mutable.Set`
* @define coll mutable set
*/
trait Set[A] extends Iterable[A]
// with GenSet[A]
with scala.collection.Set[A]
with GenericSetTemplate[A, Set]
with SetLike[A, Set[A]] {
override def companion: GenericCompanion[Set] = Set
override def seq: Set[A] = this
}
/** $factoryInfo
* The current default implementation of a $Coll is a `HashSet`.
* @define coll mutable set
* @define Coll `mutable.Set`
*/
object Set extends MutableSetFactory[Set] {
implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, Set[A]] =
ReusableCBF.asInstanceOf[CanBuildFrom[Coll, A, Set[A]]]
private[this] val ReusableCBF = setCanBuildFrom[Any]
override def empty[A]: Set[A] = HashSet.empty[A]
}
/** Explicit instantiation of the `Set` trait to reduce class file size in subclasses. */
abstract class AbstractSet[A] extends AbstractIterable[A] with Set[A]