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From: dorai@helma.rice.edu (Dorai Sitaram)
Newsgroups: comp.lang.scheme
Subject: Re: structure-sharing continuations v I-class P (was Re: call/cc) and Re: Where can I Get Scheme-in-LISP?
Keywords: continuations
Message-ID: <5944@brazos.Rice.edu>
Date: 21 Mar 90 17:12:56 GMT
References: <1990Mar8.064319.28399@brutus.cs.uiuc.edu> <4459@daffy.cs.wisc.edu> <5832@brazos.Rice.edu> <5834@brazos.Rice.edu> <5855@brazos.Rice.edu>
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In article <5855@brazos.Rice.edu> dorai@hedera.rice.edu (Dorai Sitaram) writes:
>$The efficiency issue is not clear.  It all depends on the exact
>$implementation of call-with-current-continuation.  If the
>$continuations share structure (as they do in some implementationts),
>$the solution based on F is no more time or space efficient.
>$
>$Note also that your version is shorter because you have moved some of
>$the code to the use point (by inserting "prompts").
>
>Hi, I'll take the liberty of answering you on the net too, for
>purposes of clarification.  This will not prevent the following from

While I took the questionable liberty of quoting the $'d email above,
I neglected to say who it was from.  It's from Guillermo J.  Rozas,
MIT.  My apologies to Guillermo.

***

About Rice's Scheme88 which I earlier mentioned was available via
anonymous ftp: It derives from Indiana's Scheme84, and was written
predominantly by John Greiner (jg@..., currently at CMU) in Ibuki
CommonLisp. It is now mostly maintained by Steve Weeks (weeks@rice),
Rice.  Questions may be directed to either of them.  (I'm sure they
won't mind :-].)

Once again, the ftp address is titan.rice.edu, _not_ rice.edu, and the
file to get is public/scheme88.sh .

--dorai
--
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