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-rwxr-xr-xsrc/library/scalax/collection/immutable/Map.scala66
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diff --git a/src/library/scalax/collection/immutable/Map.scala b/src/library/scalax/collection/immutable/Map.scala
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--- a/src/library/scalax/collection/immutable/Map.scala
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-/* __ *\
-** ________ ___ / / ___ Scala API **
-** / __/ __// _ | / / / _ | (c) 2003-2009, LAMP/EPFL **
-** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
-** /____/\___/_/ |_/____/_/ | | **
-** |/ **
-\* */
-
-// $Id: Set.scala 16893 2009-01-13 13:09:22Z cunei $
-
-
-package scalax.collection.immutable
-
-import generic._
-
-object Map extends MapFactory[Map] {
- private val hashSeed = "Map".hashCode
- def empty[A, B]: Map[A, B] = new EmptyMap[A, B]
-}
-
-trait Map[A, B] extends MapTemplate[A, B, Map] with collection.Map[A, B] { self =>
-
- def empty[B]: Map[A, B] = new EmptyMap[A, B]
-
- /** The same map with a given default function */
- def withDefault(d: A => B): Map[A, B] = new Map[A, B] {
- def size = self.size
- def get(key: A) = self.get(key)
- def elements = self.elements
- override def empty[C] = self.empty
- def update (key: A, value: B): Map[A, B] =
- self update (key, value) withDefault d
- def - (key: A): Map[A, B] =
- self - key withDefault d
- override def default(key: A): B = d(key)
- }
-
- /** The same map with a given default value */
- def withDefaultValue(d: B): Map[A, B] = withDefault(x => d)
-
- /** Compares this set with another object and returns true, iff the
- * other object is also a set which contains the same elements as
- * this set.
- *
- * @param that the other object
- * @note not necessarily run-time type safe.
- * @return <code>true</code> iff this set and the other set
- * contain the same elements.
- */
- override def equals(that: Any): Boolean = that match {
- case other: Map[a, b] =>
- this.size == other.size && this.forall {
- case (key, value) => other.get(key.asInstanceOf[a]) match {
- case None => false
- case Some(otherval) => value == otherval
- }
- }
- case _ => false
- }
-
- /** A hash method compatible with <code>equals</code>
- */
- override def hashCode() =
- (Map.hashSeed /: this) (_ * 41 + _.hashCode)
-
-}