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Scala example source code file (History.scala)

This example Scala source code file (History.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

history, history, int, int, list, nil, nil, nohistory, nohistory, string

The Scala History.scala source code

/* NSC -- new Scala compiler
 * Copyright 2005-2011 LAMP/EPFL
 * @author Paul Phillips
 */

package scala.tools.nsc
package interpreter
package session

/** An implementation-agnostic history interface which makes no
 *  reference to the jline classes.  Very sparse right now.
 */
trait History {
  def asStrings: List[String]
  def index: Int
  def size: Int
  def grep(s: String): List[String]
}
object NoHistory extends History {
  def asStrings       = Nil
  def grep(s: String) = Nil
  def index           = 0
  def size            = 0
}

object History {
  def empty: History = NoHistory
}

Other Scala examples (source code examples)

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