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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Equality operator overloading in ADA 83
Date: 1997/04/25
Date: 1997-04-25T00:00:00+00:00	[thread overview]
Message-ID: <dewar.862005183@merv> (raw)
In-Reply-To: 3360BFA8.5A4A@elca-matrix.ch


Mats said

<<Really ? Then show me an example where you think it's reasonable to have
   a < b not equivalent to b > a
or
   a <= b not equivalent to a < b or a = b>>


Well equivalent is a tricky word, Mats I certainly hope you realize that
with standard Ada floating-point semantics, you are not guaranteed that
these pairs of possibilities wll generate identical boolean results!

I can also easily see someone defining > or <= to mean something completely
different from comparison on a type for which comparisons make no sense
(For example <= looks a bit like an assignment ..._






  reply	other threads:[~1997-04-25  0:00 UTC|newest]

Thread overview: 114+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-04-21  0:00 Equality operator overloading in ADA 83 Manuel Wenger
1997-04-22  0:00 ` Mats Weber
1997-04-22  0:00 ` Kevin Cline
1997-04-22  0:00   ` Mark A Biggar
1997-04-24  0:00   ` Keith Thompson
1997-04-22  0:00 ` Matthew Heaney
1997-04-22  0:00   ` Mats Weber
1997-04-22  0:00     ` Matthew Heaney
1997-04-23  0:00       ` Mats Weber
1997-04-23  0:00         ` Robert A Duff
1997-04-25  0:00           ` Kevin Cline
1997-04-25  0:00             ` Matthew Heaney
1997-04-25  0:00               ` Robert A Duff
1997-04-25  0:00                 ` Jon S Anthony
1997-04-27  0:00                   ` Robert Dewar
1997-04-28  0:00                   ` Robert I. Eachus
1997-04-29  0:00                     ` Jon S Anthony
1997-04-26  0:00               ` Robert Dewar
1997-04-27  0:00                 ` Matthew Heaney
1997-04-27  0:00                   ` Robert A Duff
1997-04-25  0:00             ` Robert A Duff
1997-04-26  0:00             ` Robert Dewar
1997-04-26  0:00               ` Matthew Heaney
1997-04-22  0:00     ` Robert A Duff
1997-04-22  0:00       ` Matthew Heaney
1997-04-23  0:00         ` Mats Weber
1997-04-23  0:00           ` Robert A Duff
1997-04-24  0:00             ` Mats Weber
1997-04-24  0:00               ` Matthew Heaney
1997-04-25  0:00                 ` Robert Dewar
1997-04-25  0:00                   ` Matthew Heaney
1997-04-26  0:00                     ` Robert Dewar
1997-04-26  0:00                   ` Fergus Henderson
1997-04-26  0:00                     ` Robert A Duff
1997-04-26  0:00                       ` Robert Dewar
1997-04-27  0:00                     ` Robert Dewar
1997-04-25  0:00                 ` Robert Dewar
1997-04-25  0:00                   ` Matthew Heaney
1997-04-26  0:00                     ` Robert A Duff
1997-04-26  0:00                     ` Robert Dewar
1997-04-24  0:00               ` Robert A Duff
1997-04-24  0:00                 ` Robert Dewar
1997-04-25  0:00                   ` Robert A Duff
1997-04-26  0:00                     ` Nick Roberts
1997-04-26  0:00                       ` Robert A Duff
1997-04-26  0:00                         ` Robert Dewar
1997-04-27  0:00                           ` Robert A Duff
1997-04-26  0:00                             ` Robert Dewar
1997-04-28  0:00                               ` Simon Wright
1997-04-29  0:00                                 ` Robert I. Eachus
1997-04-26  0:00                       ` Robert Dewar
1997-04-26  0:00                         ` Matthew Heaney
1997-05-02  0:00                           ` Nick Roberts
1997-05-04  0:00                             ` Robert Dewar
1997-05-05  0:00                               ` Mats Weber
1997-05-05  0:00                                 ` Robert Dewar
1997-05-06  0:00                                   ` Matthew Heaney
1997-05-06  0:00                                     ` Robert Dewar
1997-05-07  0:00                                     ` Tucker Taft
1997-05-05  0:00                               ` Robert A Duff
1997-04-29  0:00                       ` Mats Weber
1997-05-01  0:00                         ` Robert Dewar
     [not found]                           ` <01bc571c$01f3ffc0$5de2b8cd@p5120.bda>
1997-05-03  0:00                             ` Robert Dewar
1997-04-27  0:00                     ` Robert Dewar
1997-04-27  0:00                       ` Fergus Henderson
1997-04-27  0:00                         ` Robert Dewar
1997-04-28  0:00                           ` Fergus Henderson
1997-04-28  0:00                             ` Robert Dewar
1997-04-25  0:00                 ` Kevin Cline
1997-04-25  0:00                   ` Robert A Duff
1997-04-25  0:00                   ` Mats Weber
1997-04-27  0:00                     ` Robert Dewar
1997-04-29  0:00                       ` Mats Weber
1997-04-25  0:00                   ` Mats Weber
1997-04-25  0:00                     ` Robert Dewar [this message]
1997-04-29  0:00                       ` Mats Weber
1997-05-01  0:00                         ` Robert Dewar
1997-04-25  0:00                 ` Mats Weber
1997-04-27  0:00                 ` Geert Bosch
1997-04-28  0:00               ` Robert Dewar
1997-04-29  0:00                 ` Matthew Heaney
1997-05-01  0:00                   ` Robert Dewar
1997-04-29  0:00                 ` Mats Weber
1997-04-29  0:00                   ` Robert A Duff
1997-04-29  0:00                     ` Matthew Heaney
1997-05-02  0:00                       ` Tucker Taft
1997-05-02  0:00                         ` Robert Dewar
1997-05-02  0:00                           ` Robert A Duff
1997-05-03  0:00                             ` Robert Dewar
1997-05-01  0:00                   ` Robert Dewar
1997-04-28  0:00               ` Robert Dewar
1997-04-23  0:00           ` Robert Dewar
1997-04-24  0:00             ` Robert A Duff
1997-04-29  0:00             ` Mats Weber
1997-05-01  0:00               ` Robert Dewar
1997-04-24  0:00         ` Robert Dewar
1997-04-22  0:00       ` Mats Weber
1997-04-24  0:00     ` Robert Dewar
1997-04-24  0:00       ` Robert A Duff
1997-04-25  0:00         ` Robert Dewar
1997-04-25  0:00           ` Matthew Heaney
1997-04-26  0:00             ` Robert Dewar
1997-04-26  0:00               ` Robert A Duff
1997-04-26  0:00                 ` Robert Dewar
1997-04-26  0:00                   ` Matthew Heaney
1997-04-27  0:00                   ` Robert A Duff
1997-04-26  0:00                 ` Robert Dewar
1997-04-26  0:00                   ` Matthew Heaney
1997-04-27  0:00                     ` Robert Dewar
1997-04-27  0:00                   ` Robert A Duff
1997-04-26  0:00                     ` Robert Dewar
1997-05-02  0:00                       ` Nick Roberts
1997-05-04  0:00                         ` Robert Dewar
1997-04-22  0:00   ` Philip Brashear
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