samples/effectivelist/src/org/apidesign/effectivelist/Listable.scala
author Jaroslav Tulach <jtulach@netbeans.org>
Wed, 05 Dec 2012 13:17:53 +0100
changeset 405 87bcc647df63
parent 403 ebe08056c60c
permissions -rw-r--r--
Bob pointed out that the extends bound is not necessary in Listable. Enough to have it in List.
     1 package org.apidesign.effectivelist
     2 
     3 /** A member of a {@link List} that makes keeping references
     4  * to previous and next items in the list effective.
     5  */
     6 // BEGIN: effectivelist.item
     7 trait Listable[T] {
     8   private[effectivelist] var prev : T = _
     9   private[effectivelist] var next : T = _
    10 }
    11 // END: effectivelist.item