* lib/set.rb (Set#replace): Apply a bit of optimization.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29434 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
cfis · Oct 10, 2010 · 72ef219 · 72ef219
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commit 72ef219
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Oct 10 18:42:23 2010  Akinori MUSHA  <[email protected]>
+
+	* lib/set.rb (Set#replace): Apply a bit of optimization.
+
 Sun Oct 10 10:20:07 2010  Nobuyoshi Nakada  <[email protected]>
 
 	* configure.in (RUBY_MINGW32): canonicalize as like mswin version.

diff --git a/lib/set.rb b/lib/set.rb
@@ -130,8 +130,8 @@ def clear
   # Replaces the contents of the set with the contents of the given
   # enumerable object and returns self.
   def replace(enum)
-    if enum.class == self.class
-      @hash.replace(enum.instance_eval { @hash })
+    if enum.instance_of?(self.class)
+      @hash.replace(enum.instance_variable_get(:@hash))
     else
       clear
       merge(enum)