lib/sjwvuie_palindrome.rb in sjwvuie_palindrome-0.1.0 vs lib/sjwvuie_palindrome.rb in sjwvuie_palindrome-0.2.0

@@ -1,17 +1,27 @@
 require "sjwvuie_palindrome/version"
 
-class String
-
+module SjwvuiePalindrome
   # Returns true for a palindrome, false otherwise
   def palindrome?
-    processed_content == processed_content.reverse
+    if processed_content.empty?
+      false
+    else
+      processed_content == processed_content.reverse
+    end
   end
 
   private
 
     # Returns content for palindrome testing.
     def processed_content
-      scan(/[a-z]/i).join.downcase
+      to_s.scan(/[a-z\d+]/i).join.downcase
     end
+end
 
+class String
+  include SjwvuiePalindrome
+end
+
+class Integer
+  include SjwvuiePalindrome
 end