From: Paul Murton <34993@...>
Date: 2006-08-28T05:39:40+09:00
Subject: Detecting when an object's instance variables are modified

Hi,

I have a whole load of objects which I would like to periodically dump 
as YAML. However, in order to save on resources, I would prefer to only 
dump those whose instance variables have changed since the last dump.

Is it possible to somehow 'mark' an object when the value any of its 
instance variables is changed?

Thanks for any help :)

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