lib/cistern/hash.rb in cistern-1.0.1.pre3 vs lib/cistern/hash.rb in cistern-1.0.1.pre4

@@ -4,10 +4,16 @@
       keys.each{ |k| sliced[k] = hash[k] if hash.key?(k) }
     end
   end
 
   def self.except(hash, *keys)
-    hash.dup.except!(*keys)
+    Cistern::Hash.except!(hash.dup, *keys)
+  end
+
+  # Replaces the hash without the given keys.
+  def self.except!(hash, *keys)
+    hash.keys.each { |key| hash.delete(key) }
+    hash
   end
 
   def self.stringify_keys(object)
     case object
     when Hash