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

@@ -1,15 +1,27 @@
 require "juandpineiro_palindrome/version"
 
-class String
+module JuandpineiroPalindrome
   # 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 JuandpineiroPalindrome
+end
+
+class Integer
+  include JuandpineiroPalindrome
 end