Refactor of Hash#symbolize_keys! to use Hash#replace. Closes #10420 [ReinH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8333 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

+*SVN*
+
+* Refactor of Hash#symbolize_keys! to use Hash#replace.  Closes #10420 [ReinH]
+
 * Fix HashWithIndifferentAccess#to_options! so it doesn't clear the options hash.  Closes #10419 [ReinH]
 
 *2.0.1* (December 7th, 2007)

activesupport/lib/active_support/core_ext/hash/keys.rb

@@ -31,13 +31,7 @@ def symbolize_keys
 
         # Destructively convert all keys to symbols.
         def symbolize_keys!
-          keys.each do |key|
-            unless key.is_a?(Symbol) || (new_key = key.to_sym).nil?
-              self[new_key] = self[key]
-              delete(key)
-            end
-          end
-          self
+          self.replace(self.symbolize_keys)
         end
 
         alias_method :to_options,  :symbolize_keys