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From: "Nick Roberts" <Nick.Roberts@dial.pipex.com>
Subject: Re: Not intended for use in medical,
Date: 1997/05/14
Date: 1997-05-14T00:00:00+00:00	[thread overview]
Message-ID: <01bc6006$c13cf880$LocalHost@xhv46.dial.pipex.com> (raw)
In-Reply-To: dewar.863525543@merv




Robert Dewar <dewar@merv.cs.nyu.edu> wrote in article
<dewar.863525543@merv> that the Ada 95 standard forces the heap to be used
in the implementation of the standard random number generator packages, and
suggests that this would have been avoided if Ada allowed 'in out'
parameters in functions.

This is true, but it would also have been avoided if the standard had
simply specified procedures for obtaining the random numbers instead of
functions. I believe it is a useful paradigm to always (or almost always)
use procedures where there are side effects.

However, is it not possible to implement Generator as a general access
type, and then cause it to access an aliased variable (thus avoiding use of
the heap)?

Nick.





  reply	other threads:[~1997-05-14  0:00 UTC|newest]

Thread overview: 127+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-04-23  0:00 Not intended for use in medical, Robert C. Leif, Ph.D.
1997-04-24  0:00 ` J. Florio
1997-04-25  0:00 ` Ken Garlington
1997-04-25  0:00 ` Kevin Cline
1997-04-25  0:00   ` Robert Dewar
1997-04-28  0:00 ` John Apa
1997-04-28  0:00   ` Robert Dewar
1997-04-29  0:00     ` Kaz Kylheku
1997-04-30  0:00       ` John Apa
     [not found]       ` <3367CE1E.5ED1@die_spammer.dasd.honeywell.com>
1997-05-01  0:00         ` Kaz Kylheku
1997-05-03  0:00       ` Simon Wright
1997-05-04  0:00         ` Kaz Kylheku
1997-05-04  0:00           ` Robert Dewar
1997-05-04  0:00             ` Richard Kenner
1997-05-05  0:00             ` Kaz Kylheku
1997-05-06  0:00               ` Kaz Kylheku
1997-05-06  0:00                 ` Robert A Duff
1997-05-07  0:00                   ` Kaz Kylheku
1997-05-08  0:00                     ` Robert A Duff
1997-05-07  0:00                   ` Robert Dewar
1997-05-08  0:00                     ` John G. Volan
1997-05-10  0:00                       ` Robert Dewar
1997-05-10  0:00                         ` John G. Volan
1997-05-11  0:00                           ` Robert Dewar
1997-05-11  0:00                             ` John G. Volan
1997-05-11  0:00                               ` Robert Dewar
1997-05-11  0:00                             ` John G. Volan
1997-05-11  0:00                               ` Robert A Duff
1997-05-12  0:00                                 ` Robert Dewar
1997-05-12  0:00                                 ` John G. Volan
1997-05-12  0:00                             ` John G. Volan
1997-05-12  0:00                               ` Robert Dewar
1997-05-17  0:00                               ` Robert I. Eachus
     [not found]                                 ` <dewar.863877808@merv>
1997-05-17  0:00                                   ` Robert Dewar
1997-05-17  0:00                                     ` Jon S Anthony
1997-05-21  0:00                                       ` Syntax for tagged record types (was Re: Not intended for use in medical,) Ben Brosgol
1997-05-20  0:00                                         ` Matthew Heaney
1997-05-21  0:00                                           ` Syntax for tagged record types and class types Mats Weber
1997-05-21  0:00                                             ` Matthew Heaney
1997-05-22  0:00                                               ` Mats Weber
1997-05-27  0:00                                               ` Tucker Taft
1997-05-30  0:00                                                 ` Mats.Weber
1997-05-22  0:00                                             ` Samuel A. Mize
1997-05-22  0:00                                               ` Samuel A. Mize
1997-05-23  0:00                                               ` Mats Weber
1997-05-21  0:00                                           ` Syntax for tagged record types (was Re: Not intended for use in medical,) Jon S Anthony
1997-05-21  0:00                                             ` Matthew Heaney
1997-05-22  0:00                                               ` Robert I. Eachus
1997-05-25  0:00                                                 ` Matthew Heaney
1997-05-28  0:00                                                   ` Robert I. Eachus
1997-05-23  0:00                                               ` Jon S Anthony
1997-05-23  0:00                                                 ` Simon Wright
1997-05-23  0:00                                                 ` Matthew Heaney
1997-05-25  0:00                                                   ` Jon S Anthony
1997-05-28  0:00                                                   ` Syntax for tagged record types (was Re David Kristola
     [not found]                                         ` <mheaney-ya023680002005972314260001@news.ni.net <mheaney-ya023680002105972302430001@news.ni.net>
1997-05-22  0:00                                           ` Syntax for tagged record types (was Re: Not intended for use in medical,) Robert A Duff
1997-05-22  0:00                                             ` John G. Volan
1997-05-23  0:00                                               ` Jon S Anthony
1997-05-23  0:00                                               ` Matthew Heaney
1997-05-23  0:00                                                 ` Jon S Anthony
1997-05-23  0:00                                                   ` John G. Volan
1997-05-24  0:00                                                     ` Robert A Duff
1997-05-24  0:00                                                       ` Matthew Heaney
1997-05-28  0:00                                                         ` Robert I. Eachus
1997-05-25  0:00                                                     ` Jon S Anthony
1997-05-23  0:00                                                   ` Matthew Heaney
1997-05-25  0:00                                                     ` Robert Dewar
1997-05-25  0:00                                                     ` Jon S Anthony
1997-05-27  0:00                                                     ` Ray Blaak
1997-05-12  0:00                             ` Not intended for use in medical, John G. Volan
1997-05-12  0:00                         ` Language Design Mistakes (was "not intended...") W. Wesley Groleau (Wes)
1997-05-13  0:00                           ` Robert Dewar
1997-05-13  0:00                             ` W. Wesley Groleau (Wes)
1997-05-13  0:00                             ` Robert A Duff
1997-05-14  0:00                               ` Robert Dewar
1997-05-08  0:00                     ` Not intended for use in medical, Kaz Kylheku
1997-05-08  0:00                       ` Robert Dewar
1997-05-09  0:00                         ` Kaz Kylheku
1997-05-12  0:00                       ` W. Wesley Groleau (Wes)
1997-05-12  0:00                         ` John G. Volan
1997-05-14  0:00                       ` Nick Roberts
1997-05-14  0:00                         ` Robert Dewar
1997-05-14  0:00                           ` Jeff Carter
     [not found]                             ` <dewar.863632434@merv>
1997-05-15  0:00                               ` Kaz Kylheku
1997-05-18  0:00                                 ` Robert Dewar
1997-05-15  0:00                         ` Kaz Kylheku
1997-05-08  0:00                     ` Robert A Duff
1997-05-09  0:00                       ` Robert I. Eachus
1997-05-11  0:00                         ` Robert Dewar
1997-05-11  0:00                           ` Matthew Heaney
1997-05-12  0:00                             ` Robert Dewar
1997-05-12  0:00                               ` Matthew Heaney
1997-05-13  0:00                                 ` Jon S Anthony
1997-05-13  0:00                                   ` Matthew Heaney
1997-05-14  0:00                                     ` Robert Dewar
1997-05-14  0:00                                     ` Robert Dewar
1997-05-14  0:00                                 ` Nick Roberts
1997-05-14  0:00                                 ` Robert Dewar
1997-05-14  0:00                                 ` Robert Dewar
1997-05-15  0:00                                   ` W. Wesley Groleau (Wes)
1997-05-12  0:00                           ` Robert I. Eachus
1997-05-13  0:00                             ` Robert Dewar
1997-05-14  0:00                               ` Nick Roberts [this message]
1997-05-14  0:00                                 ` Robert Dewar
     [not found]                                   ` <01bc6182$30e3a7c0$LocalHost@xhv46.dial.pipex.com>
1997-05-16  0:00                                     ` Robert A Duff
1997-05-16  0:00                                       ` Robert I. Eachus
1997-05-18  0:00                                         ` Nick Roberts
1997-05-18  0:00                                           ` Matthew Heaney
1997-05-19  0:00                                             ` Robert A Duff
1997-05-19  0:00                                             ` Robert I. Eachus
1997-05-19  0:00                                               ` Matthew Heaney
1997-05-20  0:00                                                 ` Nick Roberts
1997-05-20  0:00                                                   ` Matthew Heaney
1997-05-21  0:00                                                     ` Dale Stanbrough
1997-05-16  0:00                                     ` Robert Dewar
1997-05-04  0:00         ` Robert Dewar
1997-05-04  0:00         ` Richard Kenner
1997-04-28  0:00   ` John M. Mills
1997-04-30  0:00     ` Larry Kilgallen
1997-05-02  0:00       ` Nick Roberts
  -- strict thread matches above, loose matches on Subject: below --
1997-04-25  0:00 Robert C. Leif, Ph.D.
1997-05-12  0:00 Marin David Condic, 561.796.8997, M/S 731-93
1997-05-13  0:00 ` Robert Dewar
1997-05-14  0:00 Marin David Condic, 561.796.8997, M/S 731-93
1997-05-14  0:00 tmoran
1997-05-14  0:00 Marin David Condic, 561.796.8997, M/S 731-93
1997-05-19  0:00 Robert C. Leif, Ph.D.
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