---

yaml
---
r: 64086
b: refs/heads/snap-stage3
c: 96ae000
h: refs/heads/master
v: v3

Author: bors

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 2d28d645422c1617be58c8ca7ad9a457264ca850
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: e07ae9e6f9196096697935b96667ec272b039ad9
+refs/heads/snap-stage3: 96ae000812079b284011571dc18fed0d1fb433d8
 refs/heads/try: 7b78b52e602bb3ea8174f9b2006bff3315f03ef9
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/libstd/option.rs

@@ -161,7 +161,7 @@ impl<T> Option<T> {
 
     /// Filters an optional value using given function.
     #[inline(always)]
-    pub fn filtered<'a>(self, f: &fn(t: &'a T) -> bool) -> Option<T> {
+    pub fn filtered(self, f: &fn(t: &T) -> bool) -> Option<T> {
         match self {
             Some(x) => if(f(&x)) {Some(x)} else {None},
             None => None
@@ -170,10 +170,16 @@ impl<T> Option<T> {
 
     /// Maps a `some` value from one type to another by reference
     #[inline]
-    pub fn map<'a, U>(&self, f: &fn(&'a T) -> U) -> Option<U> {
+    pub fn map<'a, U>(&'a self, f: &fn(&'a T) -> U) -> Option<U> {
         match *self { Some(ref x) => Some(f(x)), None => None }
     }
 
+    /// Maps a `some` value from one type to another by a mutable reference
+    #[inline]
+    pub fn map_mut<'a, U>(&'a mut self, f: &fn(&'a mut T) -> U) -> Option<U> {
+        match *self { Some(ref mut x) => Some(f(x)), None => None }
+    }
+
     /// As `map`, but consumes the option and gives `f` ownership to avoid
     /// copying.
     #[inline]