Path: utzoo!attcan!uunet!mailrus!accuvax.nwu.edu!anaxagoras!krulwich
From: krulwich@ils.nwu.edu (Bruce &)
Newsgroups: comp.lang.scheme
Subject: Re: call/cc
Message-ID: <1051@anaxagoras.ils.nwu.edu>
Date: 3 Jul 90 16:24:40 GMT
References: <1990Jun30.113103.5377@idt.unit.no>
Sender: news@anaxagoras.ils.nwu.edu
Reply-To: krulwich@ils.nwu.edu (Bruce &)
Organization: Institute for the Learning Sciences, Northwestern University
Lines: 18
In-reply-to: even@idt.unit.no (Even A. Karlsson)

In article <1990Jun30.113103.5377@idt.unit.no>, even@idt (Even A. Karlsson)
writes:
>I have problem concerning call/cc. I want to pass some extra parameter
>along with the current continuation to a continuation, and I don't see how
>that is possible with call/cc. This is useful when modelling the coroutine
>aspect of classes in Simula where detach implicitly returns an environment
>(the class object) and a continuation (the rest of the body).

Can you be more specific?  It seems to me that you should be able to do this
by lexically capturing other variables in the closure you give to CALL/CC.  

Can you give an example of the behavior you want?


Bruce Krulwich
krulwich@ils.nwu.edu