---

yaml
---
r: 65534
b: refs/heads/master
c: d443fc6
h: refs/heads/master
v: v3

Author: gareth

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: c354a0c7eb22f7a4bc1c7adf8e2ed34ee96428aa
+refs/heads/master: d443fc6d90577003724ce128d2c07b7ad6b347c9
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 18e3db7392d2d0697b7e27d6d986139960144d85
 refs/heads/try: 7b78b52e602bb3ea8174f9b2006bff3315f03ef9

trunk/src/libstd/hashmap.rs

@@ -501,6 +501,15 @@ impl<K: Hash + Eq, V> HashMap<K, V> {
         }
     }
 
+    /// Retrieves a (mutable) value for the given key, failing if the key
+    /// is not present.
+    pub fn get_mut<'a>(&'a mut self, k: &K) -> &'a mut V {
+        match self.find_mut(k) {
+            Some(v) => v,
+            None => fail!("No entry found for key: %?", k),
+        }
+    }
+
     /// Return true if the map contains a value for the specified key,
     /// using equivalence
     pub fn contains_key_equiv<Q:Hash + Equiv<K>>(&self, key: &Q) -> bool {