Scala example source code file (SeqLike.scala)

This example Scala source code file (SeqLike.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, cloneable, int, parallelizable, parseq, seq, seqlike, this

The SeqLike.scala Scala example source code

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

package scala
package collection
package mutable

import parallel.mutable.ParSeq

/** A template trait for mutable sequences of type `mutable.Seq[A]`.
 *  @tparam A    the type of the elements of the set
 *  @tparam This the type of the set itself.
 *
 */
trait SeqLike[A, +This <: SeqLike[A, This] with Seq[A]]
  extends scala.collection.SeqLike[A, This]
     with Cloneable[This]
     with Parallelizable[A, ParSeq[A]]
{
  self =>

  protected[this] override def parCombiner = ParSeq.newCombiner[A]

  /** Replaces element at given index with a new value.
   *
   *  @param idx      the index of the element to replace.
   *  @param elem     the new value.
   *  @throws   IndexOutOfBoundsException if the index is not valid.
   */
  def update(idx: Int, elem: A)

  /** Applies a transformation function to all values contained in this sequence.
   *  The transformation function produces new values from existing elements.
   *
   * @param f  the transformation to apply
   * @return   the sequence itself.
   */
  def transform(f: A => A): this.type = {
    var i = 0
    this foreach { el =>
      this(i) = f(el)
      i += 1
    }
    this
  }
}