From d443fc6d90577003724ce128d2c07b7ad6b347c9 Mon Sep 17 00:00:00 2001
From: gareth <gareth@gareth-N56VM.(none)>
Date: Fri, 31 May 2013 20:56:05 +0100
Subject: [PATCH] Add a get_mut method to accompany the get method.
---
src/libstd/hashmap.rs | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/libstd/hashmap.rs b/src/libstd/hashmap.rs
index fb4cab72126..b1400d1bc76 100644
--- a/src/libstd/hashmap.rs
+++ b/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 {