# File lib/quickbooks/ruby_magic.rb, line 117
  def diff(hsh)
    dif = {}
    self.each do |k,v|
      dif[k] = v if !hsh.has_key?(k)
      if self[k].respond_to?(:===)
        dif[k] = v if !(self[k] === hsh[k])
      else
        dif[k] = v if !(self[k] == hsh[k])
      end
    end
    dif
  end