lib/HumbleCarrot_palindrome.rb in HumbleCarrot_palindrome-0.1.0 vs lib/HumbleCarrot_palindrome.rb in HumbleCarrot_palindrome-0.1.1

@@ -1,15 +1,28 @@
 require "HumbleCarrot_palindrome/version"
 
-class String
+module HumbleCarrotPalindrome
 
   # 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.
-  private def processed_content
-    self.scan(/[a-z]/i).join.downcase
-  end
+    # Returns content for palindrome testing.
+    def processed_content
+      self.to_s.scan(/[a-z|0-9]/i).join.downcase
+    end
+end
+
+class String
+  include HumbleCarrotPalindrome
+end
+
+class Integer
+  include HumbleCarrotPalindrome
 end
\ No newline at end of file