From: "Stephan J. Schmidt" <stephan.schmidt@...>
Date: 2002-05-31T21:08:43+09:00
Subject: Idiom

Hi, 

I need assistance with a hash->hash->list structure.
I modified that excellent SignalSlot script to write a SignalHandler,
which creates Signals for Components from a HTTP request.
My version doesn't work:

 (((@@components ||= {})[component.cid] ||= {})[signal] ||= []) << pr

thanks,
-stephan