lib/cellane_palindrome.rb in cellane_palindrome-0.1.0 vs lib/cellane_palindrome.rb in cellane_palindrome-1.0.0

@@ -1,13 +1,25 @@
 require 'cellane_palindrome/version'
 
-class String
+module Palindrome
   def palindrome?
-    processed_content == processed_content.reverse
+    if processed_content.empty?
+      false
+    else
+      processed_content == processed_content.reverse
+    end
   end
 
   private
 
   def processed_content
-    scan(/[a-z]/i).join.downcase
+    to_s.scan(/[a-z0-9]/i).join.downcase
   end
+end
+
+class String
+  include Palindrome
+end
+
+class Integer
+  include Palindrome
 end