From: "Robert I. Eachus" <eachus@mitre.org>
Subject: Re: Array of Variant Records Question...
Date: 1999/09/22
Date: 1999-09-22T18:07:36+00:00 [thread overview]
Message-ID: <37E91C02.5FF1655F@mitre.org> (raw)
In-Reply-To: wccd7viiv59.fsf@world.std.com
Robert A Duff wrote:
> I understand that you can have different representations of the same
> abstract value, but that's not the case with Random -- if I call Random
> twice in a row, I get two different answers (two different abstract
> values). I had better, or it's broken!
Minor comment--I don't think that Bob Duff meant to mislead anyone,
but a
random number generator that never returns the same value twice in a row
is broken, just as is one that always returns the same value. (Think
about a generator that returns boolean values.) In any case though, the
state of the generator must change or it is broken. (And any good
generator should not allow "weak seeds" to be used when resetting the
generator.)
--
Robert I. Eachus
with Standard_Disclaimer;
use Standard_Disclaimer;
function Message (Text: in Clever_Ideas) return Better_Ideas is...
next prev parent reply other threads:[~1999-09-22 0:00 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-09-08 0:00 Array of Variant Records Question Bruce Detter
1999-09-08 0:00 ` Thank you Bruce Detter
1999-09-08 0:00 ` Martin C. Carlisle
1999-09-08 0:00 ` Array of Variant Records Question Matthew Heaney
1999-09-08 0:00 ` Mike Silva
1999-09-08 0:00 ` Matthew Heaney
1999-09-09 0:00 ` Robert Dewar
1999-09-09 0:00 ` Matthew Heaney
1999-09-09 0:00 ` Matthew Heaney
1999-09-09 0:00 ` Robert Dewar
1999-09-09 0:00 ` Mark Lundquist
1999-09-09 0:00 ` Robert Dewar
1999-09-09 0:00 ` Brian Rogoff
1999-09-13 0:00 ` Matthew Heaney
1999-09-13 0:00 ` Robert A Duff
1999-09-13 0:00 ` Matthew Heaney
1999-09-13 0:00 ` Brian Rogoff
1999-09-14 0:00 ` Robert Dewar
1999-09-14 0:00 ` Brian Rogoff
1999-09-14 0:00 ` Robert Dewar
1999-09-09 0:00 ` Matthew Heaney
1999-09-10 0:00 ` Robert Dewar
1999-09-10 0:00 ` Mark Lundquist
1999-09-10 0:00 ` Matthew Heaney
1999-09-11 0:00 ` Jean-Pierre Rosen
1999-09-14 0:00 ` "cast away const" (was Re: Array of Variant Records Question...) Mark Lundquist
[not found] ` <wccd7viiv59.fsf@world.std.com>
1999-09-22 0:00 ` Robert I. Eachus [this message]
[not found] ` <7rrmqd$l89@drn.newsguy.com>
[not found] ` <wcciu59n2uf.fsf@world.std.com>
1999-09-22 0:00 ` Array of Variant Records Question Robert I. Eachus
1999-09-23 0:00 ` Robert Dewar
1999-09-23 0:00 ` Robert I. Eachus
1999-09-10 0:00 ` Mark Lundquist
1999-09-10 0:00 ` Matthew Heaney
1999-09-11 0:00 ` Robert Dewar
1999-09-11 0:00 ` Richard D Riehle
1999-09-13 0:00 ` Hyman Rosen
1999-09-14 0:00 ` Mark Lundquist
[not found] ` <7roohh$s6r@dfw-ixnews7.ix.netcom.com>
[not found] ` <37e01168@news1.prserv.net>
[not found] ` <7rp86o$c6h@dfw-ixnews3.ix.netcom.com>
[not found] ` <37E18CC6.C8D431B@rational.com>
[not found] ` <7rs8bn$s6@dfw-ixnews4.ix.netcom.com>
[not found] ` <37e2e58c@news1.prserv.net>
1999-09-22 0:00 ` 'constant functions' and access constant params (was Re: Array of Variant Records Question...) Richard D Riehle
1999-09-22 0:00 ` Mark Lundquist
1999-09-22 0:00 ` Mark Lundquist
1999-09-22 0:00 ` Matthew Heaney
1999-09-22 0:00 ` Richard D Riehle
1999-09-22 0:00 ` Matthew Heaney
1999-09-22 0:00 ` Matthew Heaney
1999-09-23 0:00 ` Vincent Marciante
1999-09-23 0:00 ` Matthew Heaney
1999-09-24 0:00 ` Robert A Duff
1999-09-25 0:00 ` Matthew Heaney
1999-09-27 0:00 ` Richard D Riehle
1999-09-27 0:00 ` David Kristola
1999-09-27 0:00 ` Richard D Riehle
1999-09-23 0:00 ` Robert Dewar
1999-09-27 0:00 ` Richard D Riehle
1999-09-28 0:00 ` Robert Dewar
1999-09-28 0:00 ` Richard D Riehle
1999-09-29 0:00 ` Robert Dewar
1999-09-29 0:00 ` Robert A Duff
1999-09-28 0:00 ` Robert Dewar
1999-09-28 0:00 ` "Competence" (was: 'constant functions' and access constant params) Ted Dennison
1999-09-28 0:00 ` Robert Dewar
[not found] ` <wccemfxn15s.fsf@world.std.com>
1999-09-22 0:00 ` 'constant functions' and access constant params (was Re: Array of Variant Records Question...) Richard D Riehle
1999-09-10 0:00 ` Proposed Ada features " Mark Lundquist
1999-09-10 0:00 ` Matthew Heaney
1999-09-10 0:00 ` tmoran
1999-09-09 0:00 ` Array of Variant Records Question Nick Roberts
1999-09-09 0:00 ` Robert Dewar
1999-09-09 0:00 ` Tucker Taft
1999-09-10 0:00 ` Nick Roberts
1999-09-08 0:00 ` Martin C. Carlisle
1999-09-08 0:00 ` Ted Dennison
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