Overwrote copyToArray for efficiency.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/library/scala/collection/mutable/ArrayOps.scala b/src/library/scala/collection/mutable/ArrayOps.scala
index d7072c0661..00e8697b53 100644
--- a/src/library/scala/collection/mutable/ArrayOps.scala
+++ b/src/library/scala/collection/mutable/ArrayOps.scala
@@ -10,6 +10,7 @@
 
 package scala.collection
 package mutable
+import compat.Platform.arraycopy
 
 import scala.reflect.ClassManifest
 
@@ -38,6 +39,13 @@ abstract class ArrayOps[T] extends ArrayLike[T, Array[T]] {
       ClassManifest.fromClass(
         repr.getClass.getComponentType.getComponentType.asInstanceOf[Predef.Class[U]]))
 
+  override def copyToArray[U >: T](xs: Array[U], start: Int, len: Int) {
+    var l = len
+    if (repr.length < l) l = repr.length
+    if (xs.length - start < l) l = xs.length - start max 0
+    Array.copy(repr, 0, xs, start, l)
+  }
+
   override def toArray[U >: T : ClassManifest]: Array[U] =
     if (implicitly[ClassManifest[U]].erasure eq repr.getClass.getComponentType)
       repr.asInstanceOf[Array[U]]