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Scala example source code file (SortedMap.scala)

This example Scala source code file (SortedMap.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Scala tags/keywords

a, a, b, b, builder, canbuildfrom, map, ordering, ordering, sortedmap, sortedmap, sortedmapcanbuildfrom, sortedmapfactory, sortedmaplike

The Scala SortedMap.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2006-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala.collection

import generic._
import mutable.Builder

/** A map whose keys are sorted.
 *
 *  @author Sean McDirmid
 *  @author Martin Odersky
 *  @version 2.8
 *  @since   2.4
 */
trait SortedMap[A, +B] extends Map[A, B] with SortedMapLike[A, B, SortedMap[A, B]] {
  /** Needs to be overridden in subclasses. */
  override def empty: SortedMap[A, B] = SortedMap.empty[A, B]

  override protected[this] def newBuilder: Builder[(A, B), SortedMap[A, B]] = 
    immutable.SortedMap.newBuilder[A, B]
}

/**
 * @since 2.8
 */
object SortedMap extends SortedMapFactory[SortedMap] {
  def empty[A, B](implicit ord: Ordering[A]): immutable.SortedMap[A, B] = immutable.SortedMap.empty[A, B](ord)

  implicit def canBuildFrom[A, B](implicit ord: Ordering[A]): CanBuildFrom[Coll, (A, B), SortedMap[A, B]] = new SortedMapCanBuildFrom[A, B]
}



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