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Diffstat (limited to 'src/library/scala/collection/immutable/TreeSet.scala')
| -rw-r--r-- | src/library/scala/collection/immutable/TreeSet.scala | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/library/scala/collection/immutable/TreeSet.scala b/src/library/scala/collection/immutable/TreeSet.scala index d681f01fb7..24a11c8b81 100644 --- a/src/library/scala/collection/immutable/TreeSet.scala +++ b/src/library/scala/collection/immutable/TreeSet.scala @@ -41,6 +41,8 @@ class TreeSet[A <% Ordered[A]]() extends Tree[A, A] with Set[A] { */ def +(elem: A): TreeSet[A] = updateOrAdd(elem, elem); + override def empty: Set[A] = New(0, GBLeaf[A,A]()); + /** <code>-</code> can be used to remove a single element from * a set. */ |