Scala example source code file (SetBuilder.scala)

This example Scala source code file (SetBuilder.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

a, builder, coll, setbuilder

The SetBuilder.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala
package collection
package mutable

/** The canonical builder for mutable Sets.
 *
 *  @tparam A      The type of the elements that will be contained in this set.
 *  @tparam Coll   The type of the actual collection this set builds.
 *  @param empty   The empty element of the collection.
 *  @since 2.8
 */
class SetBuilder[A, Coll <: scala.collection.Set[A] with scala.collection.SetLike[A, Coll]](empty: Coll) extends Builder[A, Coll] {
  protected var elems: Coll = empty
  def +=(x: A): this.type = { elems = elems + x; this }
  def clear() { elems = empty }
  def result: Coll = elems
}