diff options
Diffstat (limited to 'src/library')
-rw-r--r-- | src/library/scala/collection/mutable/Queue.scala | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/library/scala/collection/mutable/Queue.scala b/src/library/scala/collection/mutable/Queue.scala index 2aa19d6cb0..21c3a84699 100644 --- a/src/library/scala/collection/mutable/Queue.scala +++ b/src/library/scala/collection/mutable/Queue.scala @@ -32,6 +32,7 @@ import generic._ */ class Queue[A] extends MutableList[A] + with LinearSeqOptimized[A, Queue[A]] with GenericTraversableTemplate[A, Queue] with Cloneable[Queue[A]] with Serializable @@ -165,6 +166,17 @@ extends MutableList[A] * @return the first element. */ def front: A = head + + + // TODO - Don't override this just for new to create appropriate type.... + override def tail: Queue[A] = { + require(nonEmpty, "tail of empty list") + val tl = new Queue[A] + tl.first0 = first0.tail + tl.last0 = last0 + tl.len = len - 1 + tl + } } |