Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!iuvax!daemon
From: raja@silver.ucs.indiana.edu (Raja Sooriamurthi)
Newsgroups: comp.lang.scheme
Subject: Re: call/cc
Message-ID: <49352@iuvax.cs.indiana.edu>
Date: 30 Jun 90 15:53:45 GMT
Sender: daemon@iuvax.cs.indiana.edu
Lines: 24

In comp.lang.scheme you write:


>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).

I don't know if I understand your question clearly, but will the below
outline solve your problem?

(define receiver 
  (lambda (x)
    (lambda (current-cont)
      .
      body
      .)))

(call/cc (receiver extra-param))

- Raja
raja@silver.ucs.indiana.edu