Better return types for List.unapplySeq and Seq...

Better return types for List.unapplySeq and Seq.unapplySeq - these can be optimized, return type Some[T] means we don't need isEmpty check.

2 files changed, 2 insertions, 2 deletions

diff --git a/src/library/scala/List.scala b/src/library/scala/List.scala
index b059fb08a8..641accec7a 100644
--- a/src/library/scala/List.scala
+++ b/src/library/scala/List.scala
@@ -31,7 +31,7 @@ object List {
 
   /** for unapply matching
    */
-  def unapplySeq[A](x: List[A]): Option[List[A]] = Some(x)
+  def unapplySeq[A](x: List[A]): Some[List[A]] = Some(x)
 
   /** Create a sorted list of all integers in a range.
    *
diff --git a/src/library/scala/Seq.scala b/src/library/scala/Seq.scala
index f46517c9e4..60b1488cde 100644
--- a/src/library/scala/Seq.scala
+++ b/src/library/scala/Seq.scala
@@ -28,7 +28,7 @@ object Seq {
    *  @param x the selector value
    *  @return  sequence wrapped in an option, if this is a Seq, otherwise none
    */
-  def unapplySeq[A](x: Seq[A]): Option[Seq[A]] = Some(x)
+  def unapplySeq[A](x: Seq[A]): Some[Seq[A]] = Some(x)
 
   /** Builds a singleton sequence.
    *