Modified partialMap to take PartialFunction[A, ...

Modified partialMap to take PartialFunction[A, B] instead of Any => B.
There was definitely some reason I didn't do this in the first place,
but either that reason no longer applies or it's not easily induced.
However please consider this change slightly tentative as I feel like
that other shoe may still be out there and we might have to reconsider.

5 files changed, 6 insertions, 5 deletions

diff --git a/src/library/scala/Option.scala b/src/library/scala/Option.scala
index 06b62bbd5f..8511fa78a5 100644
--- a/src/library/scala/Option.scala
+++ b/src/library/scala/Option.scala
@@ -110,7 +110,7 @@ sealed abstract class Option[+A] extends Product {
    *
    *  @param  pf   the partial function.
    */
-  def partialMap[B](pf: PartialFunction[Any, B]): Option[B] =
+  def partialMap[B](pf: PartialFunction[A, B]): Option[B] =
     if (!isEmpty && pf.isDefinedAt(this.get)) Some(pf(this.get)) else None
 
   /** If the option is nonempty return it,
diff --git a/src/library/scala/collection/Iterator.scala b/src/library/scala/collection/Iterator.scala
index ac6cb890c4..b4b71be8e1 100644
--- a/src/library/scala/collection/Iterator.scala
+++ b/src/library/scala/collection/Iterator.scala
@@ -430,7 +430,7 @@ trait Iterator[+A] { self =>
   *  @param pf the partial function which filters and maps the iterator.
   *  @return the new iterator.
   */
-  def partialMap[B](pf: PartialFunction[Any, B]): Iterator[B] = {
+  def partialMap[B](pf: PartialFunction[A, B]): Iterator[B] = {
     val self = buffered
     new Iterator[B] {
       private def skip() = while (self.hasNext && !pf.isDefinedAt(self.head)) self.next()
diff --git a/src/library/scala/collection/TraversableLike.scala b/src/library/scala/collection/TraversableLike.scala
index fe3dbb7dcf..37dccedd95 100644
--- a/src/library/scala/collection/TraversableLike.scala
+++ b/src/library/scala/collection/TraversableLike.scala
@@ -289,13 +289,13 @@ self =>
    *                `pf` to each element on which it is defined and collecting the results.
    *                The order of the elements is preserved.
    *
-   *  @usecase def partialMap[B](pf: PartialFunction[Any, B]): $Coll[B]
+   *  @usecase def partialMap[B](pf: PartialFunction[A, B]): $Coll[B]
    *
    *  @return       a new $coll resulting from applying the given partial function
    *                `pf` to each element on which it is defined and collecting the results.
    *                The order of the elements is preserved.
    */
-  def partialMap[B, That](pf: PartialFunction[Any, B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+  def partialMap[B, That](pf: PartialFunction[A, B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
     val b = bf(repr)
     for (x <- this) if (pf.isDefinedAt(x)) b += pf(x)
     b.result
diff --git a/src/library/scala/collection/TraversableProxyLike.scala b/src/library/scala/collection/TraversableProxyLike.scala
index 25a41a05bd..24d6c7048d 100644
--- a/src/library/scala/collection/TraversableProxyLike.scala
+++ b/src/library/scala/collection/TraversableProxyLike.scala
@@ -36,6 +36,7 @@ trait TraversableProxyLike[+A, +This <: TraversableLike[A, This] with Traversabl
   override def ++[B >: A, That](that: Iterator[B])(implicit bf: CanBuildFrom[This, B, That]): That = self.++(that)(bf)
   override def map[B, That](f: A => B)(implicit bf: CanBuildFrom[This, B, That]): That = self.map(f)(bf)
   override def flatMap[B, That](f: A => Traversable[B])(implicit bf: CanBuildFrom[This, B, That]): That = self.flatMap(f)(bf)
+  override def partialMap[B, That](pf: PartialFunction[A, B])(implicit bf: CanBuildFrom[This, B, That]): That  = self.partialMap(pf)(bf)
   override def filter(p: A => Boolean): This = self.filter(p)
   override def filterNot(p: A => Boolean): This = self.filterNot(p)
   override def partition(p: A => Boolean): (This, This) = self.partition(p)
diff --git a/src/library/scala/collection/interfaces/TraversableMethods.scala b/src/library/scala/collection/interfaces/TraversableMethods.scala
index 9173ac1121..08ade7586d 100644
--- a/src/library/scala/collection/interfaces/TraversableMethods.scala
+++ b/src/library/scala/collection/interfaces/TraversableMethods.scala
@@ -24,7 +24,7 @@ trait TraversableMethods[+A, +This <: TraversableLike[A, This] with Traversable[
   // maps/iteration
   def flatMap[B, That](f: A => Traversable[B])(implicit bf: CanBuildFrom[This, B, That]): That
   def map[B, That](f: A => B)(implicit bf: CanBuildFrom[This, B, That]): That
-  def partialMap[B, That](pf: PartialFunction[Any, B])(implicit bf: CanBuildFrom[This, B, That]): That
+  def partialMap[B, That](pf: PartialFunction[A, B])(implicit bf: CanBuildFrom[This, B, That]): That
 
   // new collections
   def ++[B >: A, That](that: Iterator[B])(implicit bf: CanBuildFrom[This, B, That]): That