From: Brian Rogoff <bpr@shell5.ba.best.com>
Subject: Re: Depending on passing mechanism
Date: 1997/10/16
Date: 1997-10-16T00:00:00+00:00 [thread overview]
Message-ID: <Pine.BSF.3.96.971016131014.2530A-100000@shell5.ba.best.com> (raw)
In-Reply-To: hbaker-1510970700110001@10.0.2.1
On Wed, 15 Oct 1997, Henry Baker wrote:
> In article <622b4t$nhe$1@gonzo.sun3.iaf.nl>, Geert Bosch
> <geert@gonzo.sun3.iaf.nl> wrote:
> > ... about non-determinism and Ada parameter passing ...
> >
> > Do you have a proposal to remove the non-determinism without affecting
> > performance and flexibility too much? I think many readers in this
> > group might be interested in such ideas, at least I am.
> >
> > Regards,
> > Geert
>
> 3. Add a new concept to your language: 'linear'/'unique' types. These
> objects are guaranteed to be singly referenced because this is enforced
> by the type system. Poof! No aliasing! This concept was pioneered by
> NIL/Hermes, and has recently been incorporated into some logical (prolog-like)
> languages and some functional languages ('Clean' from KU Leaven). There is a
> large and growing body of mathematics called 'linear logic' that puts linear
> types on a firm theoretical foundation.
I remember reading something about NIL a long time ago (this is from Bell
Labs, right?) and their notion of "typestates", which I think what I
think you are talking about, and I thought that they stated that there was
a fairly significant performance overhead in their use, and hence they
wouldn't be really suitable in the role that you are proposing for them in
Ada. Anyone have different information?
-- Brian
next prev parent reply other threads:[~1997-10-16 0:00 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-10-13 0:00 Depending on passing mechanism Andre Spiegel
1997-10-13 0:00 ` Matthew Heaney
1997-10-14 0:00 ` Robert Dewar
1997-10-14 0:00 ` Robert Dewar
1997-10-14 0:00 ` Henry Baker
1997-10-15 0:00 ` JP Thornley
1997-10-15 0:00 ` Geert Bosch
1997-10-15 0:00 ` Henry Baker
1997-10-15 0:00 ` Jon S Anthony
1997-10-15 0:00 ` Robert Dewar
1997-10-16 0:00 ` Brian Rogoff [this message]
1997-10-17 0:00 ` Henry Baker
1997-10-18 0:00 ` Fergus Henderson
1997-10-18 0:00 ` Brian Rogoff
1997-10-18 0:00 ` Matthew Heaney
1997-10-19 0:00 ` Brian Rogoff
1997-10-21 0:00 ` Robert A Duff
1997-10-22 0:00 ` Robert Dewar
1997-10-22 0:00 ` Brian Rogoff
[not found] ` <dewar.877601826@merv>
1997-10-23 0:00 ` Brian Rogoff
1997-10-23 0:00 ` Henry Baker
1997-10-23 0:00 ` Brian Rogoff
1997-10-19 0:00 ` Fergus Henderson
1997-10-19 0:00 ` Brian Rogoff
1997-10-20 0:00 ` Fergus Henderson
1997-10-20 0:00 ` Henry Baker
1997-10-20 0:00 ` Tucker Taft
1997-10-21 0:00 ` Geert Bosch
1997-10-15 0:00 ` Robert Dewar
1997-10-15 0:00 ` Robert Dewar
1997-10-17 0:00 ` Andre Spiegel
1997-10-17 0:00 ` Henry Baker
1997-10-17 0:00 ` Jon S Anthony
1997-10-17 0:00 ` Robert I. Eachus
1997-10-21 0:00 ` Robert A Duff
1997-10-21 0:00 ` Peter Hermann
1997-10-22 0:00 ` Robert A Duff
1997-10-22 0:00 ` Brian Rogoff
1997-10-22 0:00 ` Henry Baker
1997-10-21 0:00 ` Robert Dewar
1997-10-22 0:00 ` Jon S Anthony
1997-10-22 0:00 ` Brian Rogoff
1997-10-15 0:00 ` Brian Rogoff
1997-10-19 0:00 ` Robert Dewar
1997-10-22 0:00 ` Henry Baker
1997-10-21 0:00 ` Robert A Duff
1997-10-22 0:00 ` Henry Baker
1997-10-21 0:00 ` Matthew Heaney
1997-10-22 0:00 ` Simon Wright
1997-10-23 0:00 ` Henry Baker
1997-10-23 0:00 ` Pat Rogers
1997-10-24 0:00 ` Robert Dewar
1997-10-23 0:00 ` Robert A Duff
1997-10-21 0:00 ` Keith Thompson
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