lib/hexp/node/attributes.rb in hexp-0.4.2 vs lib/hexp/node/attributes.rb in hexp-0.4.3

@@ -86,10 +86,10 @@
       #
       # @return [Array<String>]
       #
       # @api public
       def class_list
-        (attr('class') || '').split(' ')
+        @class_list ||= (attr('class') || '').split(' ')
       end
 
       # Remove a CSS class from this element
       #
       # If the resulting class list is empty, the class attribute will be