From: "Jesús Gabriel y Galán" Date: 2010-08-30T23:59:06+09:00 Subject: Re: Pass an array to a new instance of a class. On Mon, Aug 30, 2010 at 3:21 PM, Jonathan Allen wrote: >  def is_container >    return true if flags.include?(container) >  end > end Apart from all the other suggestions, you should change the container above to "container". Jesus.