From: "Hal E. Fulton" <hal9000@...>
Date: 2002-08-04T11:13:48+09:00
Subject: ZIGZAG - was Re: Assoc Class (Hash Pairs)

----- Original Message ----- 
From: "Massimiliano Mirra" <list@NOSPAMchromatic-harp.com.web-hosting.com>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Saturday, August 03, 2002 8:38 PM
Subject: Re: Assoc Class (Hash Pairs)



> You are thinking in terms of bidirectional links between objects.
> Take a look at the ZigZag concept, you'll find lots of food for
> thought. :-)

OK, Massimiliano, now you've done it -- you've
mentioned ZigZag!

I've read about it, though I'm still trying to
assimilate it. It sounds like it's just a 
specialized form of a directed graph with a 
few constraints on it.

Or is ZigZag the app itself? I thought it was
a kind of data structure...

Are there good practical uses for it, and has
anyone here done anything with it (especially
in Ruby)?

Hal