From: dewarr@my-dejanews.com
Subject: Re: Software landmines (was: Why C++ is successful)
Date: 1998/09/07
Date: 1998-09-07T00:00:00+00:00 [thread overview]
Message-ID: <6t1b6o$ldk$1@nnrp1.dejanews.com> (raw)
In-Reply-To: 35F3FF42.D1E163E0@elca-matrix.ch
In article <35F3FF42.D1E163E0@elca-matrix.ch>,
Mats.Weber@elca-matrix.ch wrote:
> John G. Volan wrote:
>
> > > declare
> > > A : Integer renames Get_A (10);
> > > B : Float renames Get_B (X);
> > > C : Boolean renames Get_C (Y);
> > > begin
> > > Op (A, B, C);
> > > end;
> >
> > I'm curious: Does this have the same effect as the above, i.e., are the
> > function calls forced into a sequential order? Or is their evaluation
> > deferred until the aliases A, B, and C are actually used as parameters
> > to the Op call, in which case the aliased function calls get executed in
> > an undefined order?
>
> Yes, it has the same effect. Each function call is evaluated during the
> elaboration of the renames it appears in. You are in fact renaming the object
> that contains the function result. (See RM 3.3(10)).
>
I must say that I find the renaming of function calls
like this to be a confusing oddity. It seems much clearer
to me to use ordinary constant declarations. The two
seem completely equivalent!
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next prev parent reply other threads:[~1998-09-07 0:00 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-08-22 0:00 Software landmines (was: Why C++ is successful) dewar
1998-08-23 0:00 ` Dale Stanbrough
1998-08-23 0:00 ` dewar
1998-08-23 0:00 ` Andi Kleen
1998-08-24 0:00 ` Richard D Riehle
1998-08-25 0:00 ` dennison
1998-08-25 0:00 ` Andi Kleen
1998-08-25 0:00 ` Brian Rogoff
1998-08-28 0:00 ` Matthew Heaney
1998-08-28 0:00 ` Richard D Riehle
1998-08-29 0:00 ` Matthew Heaney
1998-09-06 0:00 ` John G. Volan
1998-09-07 0:00 ` Mats Weber
1998-09-07 0:00 ` dewarr [this message]
1998-09-08 0:00 ` Tucker Taft
1998-09-08 0:00 ` Precalculation of parameters (was: Software landmines) dennison
1998-09-09 0:00 ` Tucker Taft
1998-09-09 0:00 ` dennison
1998-09-10 0:00 ` Tucker Taft
1998-09-10 0:00 ` dewarr
1998-09-16 0:00 ` Software landmines (was: Why C++ is successful) Matthew Heaney
1998-08-29 0:00 ` Matthew Heaney
[not found] ` <35eca5d9.4354839@news.geccs.gecm.com>
1998-09-01 0:00 ` Richard D Riehle
-- strict thread matches above, loose matches on Subject: below --
1998-08-06 0:00 Why C++ is successful Robert Dewar
1998-08-07 0:00 ` harald.mueller
1998-08-07 0:00 ` Brian Rogoff
1998-08-07 0:00 ` Timothy Welch
1998-08-08 0:00 ` Robert Dewar
1998-08-08 0:00 ` Jeffrey C. Dege
1998-08-10 0:00 ` Laurent GUERBY
1998-08-12 0:00 ` Andy Ward
1998-08-14 0:00 ` Robert Dewar
1998-08-14 0:00 ` Software landmines (was: Why C++ is successful) dennison
1998-08-15 0:00 ` Thaddeus L. Olczyk
1998-08-16 0:00 ` Robert Dewar
1998-08-17 0:00 ` dennison
1998-08-18 0:00 ` adam
1998-08-19 0:00 ` Tucker Taft
1998-08-19 0:00 ` adam
1998-08-19 0:00 ` ell
1998-08-19 0:00 ` Charles Hixson
1998-08-19 0:00 ` adam
1998-08-19 0:00 ` Dan Higdon
1998-08-20 0:00 ` adam
1998-08-20 0:00 ` Dan Higdon
[not found] ` <m33eagru5g.fsf@mheaney.ni.net>
1998-08-31 0:00 ` Frank Adrian
1998-08-31 0:00 ` Robert I. Eachus
1998-08-31 0:00 ` Biju Thomas
1998-08-31 0:00 ` Robert Martin
1998-09-01 0:00 ` Martin Dowie
1998-09-01 0:00 ` Robert I. Eachus
1998-09-02 0:00 ` dennison
1998-09-01 0:00 ` dewarr
1998-09-06 0:00 ` Jonathan Guthrie
1998-08-20 0:00 ` Ell
1998-08-21 0:00 ` Ell
1998-08-21 0:00 ` Larry Brasfield
1998-08-21 0:00 ` Ell
1998-08-21 0:00 ` Jeffrey C. Dege
1998-08-20 0:00 ` Phlip
1998-08-21 0:00 ` Larry Brasfield
[not found] ` <DOSXjHE9T6DM9Jw9nAyaPxfz@news.rdc1.bc.wave.home.com>
1998-08-22 0:00 ` dewar
1998-08-24 0:00 ` dennison
1998-08-28 0:00 ` Matthew Heaney
1998-08-28 0:00 ` dennison
1998-08-30 0:00 ` Matthew Heaney
1998-09-06 0:00 ` John G. Volan
1998-08-31 0:00 ` Robert I. Eachus
1998-08-24 0:00 ` Martin Dowie
1998-08-24 0:00 ` Martin Dowie
1998-08-24 0:00 ` Mark A Biggar
1998-08-25 0:00 ` Martin Dowie
1998-08-25 0:00 ` Mark A Biggar
1998-08-26 0:00 ` Martin Dowie
1998-08-25 0:00 ` adam
1998-09-22 0:00 ` Charles H. Sampson
1998-08-21 0:00 ` Bob Collins
1998-08-21 0:00 ` John Goodsen
1998-08-21 0:00 ` Ell
1998-08-21 0:00 ` Ell
1998-08-20 0:00 ` Gerry Quinn
1998-08-16 0:00 ` Jay Martin
1998-08-17 0:00 ` Robert Dewar
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