path: root/src/library/scala/collection/mutable/Undoable.scala

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2009, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

// $Id$


package scala.collection.mutable


/** Classes that mix in the <code>Undoable</code> class provide an operation
 *  <code>undo</code> which can be used to undo the last operation.
 *
 *  @author  Matthias Zenger
 *  @version 1.0, 08/07/2003
 */
trait Undoable {
  /** Undo the last operation.
   */
  def undo(): Unit
}