comp.lang.ada
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From: dewarr@my-dejanews.com
Subject: Re: Fortran or Ada?
Date: 1998/09/25
Date: 1998-09-25T00:00:00+00:00	[thread overview]
Message-ID: <6ueo44$ga0$1@nnrp1.dejanews.com> (raw)
In-Reply-To: 6ue7kp$61k@boofura.swcp.com

In article <6ue7kp$61k@boofura.swcp.com>,
  walt@fortran.com wrote:
> dewarr@my-dejanews.com wrote:
>
> > Well it is certainly a design point of Ada to avoid situations
> > in which small lexical errors cause major differences in the
> > meaning of a program, and I think it achieves this goal pretty
> > well. Certainly better than . . .
> >
> > . . . Fortran:
> >
> >      Do 10 i = 1.6
> >
> > the latter being the (in)famous bug at the heart of the urban
> > legend that the Venus probe died because of this bug :-)
>
> By Fortran, you must mean Fortran 77 because there are three
> features in Fortran 90/95 that will cause this to be classified
> as an error:
>
> 1.  implicit none (causing Do10i to be caught as an undeclared
>     variable)
>
> 2.  Significant blanks in the free source form (making the
>     statement illegal syntactially)
>
> 3.  Use of do-end do form instead of those old-fashioned labels
>     (in which case a syntactially illegal do statement will
>     produce an end do with no matching do).
>
> BTW, I think Ada is (also) a great language.


But aren't all these three optional? And indeed the first
two are very strange options indeed, necessitated by the
gods of compatibility, right?

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  reply	other threads:[~1998-09-25  0:00 UTC|newest]

Thread overview: 93+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1998-09-24  0:00 Fortran or Ada? Walt Brainerd
1998-09-25  0:00 ` dewarr [this message]
1998-09-25  0:00 ` Robert I. Eachus
  -- strict thread matches above, loose matches on Subject: below --
1998-10-05  0:00 Robert I. Eachus
1998-10-05  0:00 Condic, Marin D.
1998-10-05  0:00 robin
1998-09-23  0:00 Marin David Condic, 561.796.8997, M/S 731-96
1998-09-23  0:00 Marin David Condic, 561.796.8997, M/S 731-96
1998-09-23  0:00 ` Gisle S{lensminde
1998-09-24  0:00   ` John McCabe
1998-09-24  0:00     ` Gisle S{lensminde
1998-09-24  0:00     ` Dean F. Sutherland
1998-09-24  0:00 ` Samuel T. Harris
     [not found] <36068E73.F0398C54@meca.polymtl.ca>
1998-09-22  0:00 ` Gisle S{lensminde
1998-09-22  0:00   ` Jeff Templon
1998-09-22  0:00     ` Larry Kilgallen
1998-09-22  0:00     ` Corey Minyard
1998-09-22  0:00     ` dewarr
1998-09-23  0:00       ` Jeff Templon
1998-09-23  0:00         ` Corey Minyard
1998-09-24  0:00           ` Craig Burley
1998-09-25  0:00             ` dewarr
1998-09-25  0:00               ` Jonathan Guthrie
1998-09-26  0:00               ` Craig Burley
1998-09-26  0:00                 ` dewarr
1998-09-26  0:00                   ` Robert B. Love 
1998-09-26  0:00                   ` Craig Burley
1998-09-24  0:00           ` Joel Seidman
1998-09-24  0:00         ` Marc A. Criley
1998-09-24  0:00           ` Jeff Templon
1998-09-25  0:00             ` dewarr
1998-09-25  0:00             ` Dale Stanbrough
1998-09-30  0:00               ` Daniel Barker
1998-09-30  0:00                 ` Lawrence Kirby
1998-10-01  0:00                   ` Aaron Crane
1998-10-05  0:00                 ` Terry Devine
1998-09-24  0:00           ` dewarr
1998-09-24  0:00             ` Robert I. Eachus
1998-09-24  0:00               ` William Clodius
1998-09-25  0:00                 ` dewarr
1998-09-25  0:00               ` dewarr
1998-09-25  0:00                 ` Robert I. Eachus
1998-09-25  0:00                   ` dewarr
1998-09-25  0:00             ` jbs
1998-09-26  0:00               ` dewarr
1998-09-28  0:00                 ` jbs
1998-09-29  0:00                   ` Dean F. Sutherland
1998-09-29  0:00                   ` William B. Clodius
1998-09-30  0:00                     ` jbs
1998-09-30  0:00                       ` William Clodius
1998-09-30  0:00                       ` dewarr
1998-09-30  0:00                         ` jbs
1998-09-30  0:00                           ` William Clodius
1998-10-03  0:00                       ` Niklas Holsti
1998-10-03  0:00                         ` Toon Moene
1998-10-03  0:00                           ` Niklas Holsti
1998-10-03  0:00                             ` Toon Moene
1998-10-04  0:00                               ` Niklas Holsti
1998-10-05  0:00                                 ` Michel OLAGNON
1998-10-05  0:00                                   ` Ian St. John
1998-10-05  0:00                                     ` Richard D Riehle
1998-10-05  0:00                                       ` dewarr
1998-10-05  0:00                                     ` dewarr
1998-10-05  0:00                                       ` Ian St. John
1998-10-06  0:00                                         ` dewarr
1998-10-06  0:00                                           ` Ian St. John
1998-10-08  0:00                                             ` Gary L. Scott
1998-10-06  0:00                                           ` Toon Moene
1998-10-06  0:00                                             ` Jonathan Guthrie
1998-10-06  0:00                                           ` James Giles
1998-10-06  0:00                                             ` Mark A Biggar
1998-10-06  0:00                                               ` James Giles
1998-10-07  0:00                                                 ` dewarr
1998-10-07  0:00                                             ` dewarr
1998-10-06  0:00                                     ` Michel OLAGNON
1998-10-07  0:00                                       ` Ian St. John
1998-09-29  0:00                   ` Gautier.DeMontmollin
1998-09-29  0:00                   ` Dean F. Sutherland
1998-09-29  0:00                   ` Dean F. Sutherland
1998-10-02  0:00                   ` Geoff Bull
1998-10-02  0:00                   ` Robert I. Eachus
1998-10-02  0:00                     ` jbs
1998-10-02  0:00                       ` William Clodius
1998-10-03  0:00                         ` jbs
1998-10-03  0:00                           ` Larry Elmore
1998-10-06  0:00                           ` Robert I. Eachus
1998-10-06  0:00                             ` Pat Rogers
     [not found]           ` <6udre0$ha1$1@nnrp1.dejane <6utg60$h6l$1@nnrp1.dejanews.com>
1998-10-01  0:00             ` robin_v
1998-09-22  0:00     ` Rakesh Malhotra
1998-09-23  0:00     ` Frank Ecke
1998-09-23  0:00   ` bglbv
1998-09-23  0:00     ` Robert I. Eachus
1998-09-24  0:00       ` Richard D Riehle
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