1 files changed, 34 insertions, 0 deletions
diff --git a/src/library/scalax/collection/immutable/EmptyMap.scala b/src/library/scalax/collection/immutable/EmptyMap.scala
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+++ b/src/library/scalax/collection/immutable/EmptyMap.scala
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+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2003-2009, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id: EmptyMap.scala 16893 2009-01-13 13:09:22Z cunei $
+
+
+
+package scalax.collection.immutable
+
+/** This class implements empty immutable maps
+ *  @author  Martin Oderskty
+ *  @version 1.0, 019/01/2007
+ */
+@serializable
+class EmptyMap[A, B] extends Map[A, B] {
+
+  def size: Int = 0
+
+  def get(key: A): Option[B] = None
+
+  def elements: Iterator[(A, B)] = Iterator.empty
+
+  def update (key: A, value: B): Map[A, B] = new Map1(key, value)
+
+  def - (key: A): Map[A, B] = this
+}
+
+
+