diff options
| -rw-r--r-- | sources/scala/collection/immutable/Tree.scala | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sources/scala/collection/immutable/Tree.scala b/sources/scala/collection/immutable/Tree.scala index 24c98dce98..a6bd8920db 100644 --- a/sources/scala/collection/immutable/Tree.scala +++ b/sources/scala/collection/immutable/Tree.scala @@ -1,6 +1,6 @@ /* __ *\ ** ________ ___ / / ___ Scala API ** -** / __/ __// _ | / / / _ | (c) 2003, LAMP/EPFL ** +** / __/ __// _ | / / / _ | (c) 2003-2004, LAMP/EPFL ** ** __\ \/ /__/ __ |/ /__/ __ | ** ** /____/\___/_/ |_/____/_/ | | ** ** |/ ** @@ -63,7 +63,7 @@ package scala.collection.immutable; * @author Erik Stenman * @version 1.0, 10/07/2003 */ -abstract class Tree[A <% Ordered[A], B] { +abstract class Tree[A <% Ordered[A], B] with java.io.Serializable { /* Data structure: ** - size:Int - the number of elements in the tree. ** - tree:T, which is composed of nodes of the form: |