Discovered another impressive source of unneces...

Discovered another impressive source of unnecessary garbage is every
collection creating a new GenericCanBuildFrom for every map ever
performed. They can all use the same one: they all have the same
implementation. It looks like tiark had already figured this out and
done it for Vector: I followed with the other fifty. I really haven't
the least idea who to have review most things. No review.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/library/scala/collection/immutable/Queue.scala b/src/library/scala/collection/immutable/Queue.scala
index bf5dc6816a..e09e4b7196 100644
--- a/src/library/scala/collection/immutable/Queue.scala
+++ b/src/library/scala/collection/immutable/Queue.scala
@@ -144,7 +144,7 @@ class Queue[+A] protected(protected val in: List[A], protected val out: List[A])
  */
 object Queue extends SeqFactory[Queue] {
   /** $genericCanBuildFromInfo */
-  implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, Queue[A]] = new GenericCanBuildFrom[A]
+  implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, Queue[A]] = ReusableCBF.asInstanceOf[GenericCanBuildFrom[A]]
   def newBuilder[A]: Builder[A, Queue[A]] = new ListBuffer[A] mapResult (x => new Queue[A](Nil, x.toList))
   override def empty[A]: Queue[A] = EmptyQueue.asInstanceOf[Queue[A]]
   override def apply[A](xs: A*): Queue[A] = new Queue[A](Nil, xs.toList)