require "julbosch_palindrome/version"

module JulboschPalindrome

  # Returns true for a palindrome, false otherwise. Also false for empty strings.
  def palindrome?
    if processed_content == ""
      return false
    else
      return processed_content == processed_content.reverse
    end
  end

  private

    # Returns content for palindrome testing.
    def processed_content
      return self.to_s.scan(/[a-z0-9]/i).join.downcase
    end

end

class String
  include JulboschPalindrome
end

class Integer
  include JulboschPalindrome
end