Path: utzoo!mnetor!uunet!pyrdc!gmu90x!dana
From: dana@gmu90x.UUCP (J Dana Eckart)
Newsgroups: comp.lang.misc
Subject: Re: iterators
Message-ID: <861@gmu90x.UUCP>
Date: 20 Mar 88 19:47:03 GMT
References: <2827@enea.se> <1557@pasteur.Berkeley.Edu> <3764@bloom-beacon.MIT.EDU> <3864@bloom-beacon.MIT.EDU> <616@mcrware.UUCP>
Reply-To: dana@gmu90x.UUCP (J Dana Eckart)
Organization: George Mason University
Lines: 18
Keywords: iteration,

In article <616@mcrware.UUCP> jejones@mcrware.UUCP (James Jones) writes:
>There's one thing that bugs me about CLU iterators, which on the whole are
>pretty neat: if I have two things I want to iterate through in lockstep,
>how do I do it?
>		James Jones

I have been concerned about this same problem.  I wrote a short paper
about this that appeared in SIGPLAN Notices in April 1987.  I would be
curious to know what you (and the rest of the net) think of it.  I have 
submitted a more recent and indepth paper on the subject to a conference 
that more clearly addresses some of the "problems" with the proposal 
that appears in the SIGPLAN Notices paper.  If there is sufficient
interest I might consider posting the "refined" proposal.

J Dana Eckart
	UUCP:	...!(gatech | pyrdc)!gmu90x!dana
	ARPA:   dana@gmu90x.gmu.edu
	SNAIL:	P.O. Box 236/Fairfax, VA  22030-0236