SI-9116 Set.subsets has a param list

Now both of the overloaded variants have a parameter list.
This seems to make type inference happier. Or it makes someone
happier.

The user is unaware whether `subsets()` takes a default arg.
But happily, empty application still kicks in.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/library/scala/collection/SetLike.scala b/src/library/scala/collection/SetLike.scala
index 3e549f72cd..31465bb619 100644
--- a/src/library/scala/collection/SetLike.scala
+++ b/src/library/scala/collection/SetLike.scala
@@ -171,7 +171,7 @@ self =>
    *
    *  @return     the iterator.
    */
-  def subsets: Iterator[This] = new AbstractIterator[This] {
+  def subsets(): Iterator[This] = new AbstractIterator[This] {
     private val elms = self.toIndexedSeq
     private var len = 0
     private var itr: Iterator[This] = Iterator.empty