From: Jan Friedrich <frdrch@...>
Date: 2007-03-12T21:45:00+09:00
Subject: Re: OpenStruct,, know what keys are set

o = OpenStruct.new
o.foo = 2
o.bar = 4
o.marshal_dump # => {:foo=>2, :bar=>4}
o.marshal_dump.keys # => [:foo, :bar]

regards,
Jan

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