From 041b5a9f67b73fcc08aa41dedc5c4ba4e63c701d Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Fri, 21 Mar 2014 21:53:50 +0900
Subject: reduce object allocation in __update

---
 mrblib/hash.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mrblib/hash.rb b/mrblib/hash.rb
index 20dd67091..0423f7edc 100644
--- a/mrblib/hash.rb
+++ b/mrblib/hash.rb
@@ -185,7 +185,7 @@ class Hash
   end
 
   def __update(h)
-    h.each{|k,v| self[k] = v}
+    h.each_key{|k| self[k] = h[v]}
     self
   end
 end
-- 
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