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From: dweller@dfw.net (David Weller)
Subject: Re: next "big" language?? (disagree)
Date: 1996/06/11
Date: 1996-06-11T00:00:00+00:00	[thread overview]
Message-ID: <4pjnki$8k7@dfw.dfw.net> (raw)
In-Reply-To: 4pj7e0$fat@goanna.cs.rmit.EDU.AU


In article <4pj7e0$fat@goanna.cs.rmit.EDU.AU>,
++           robin <rav@goanna.cs.rmit.EDU.AU> wrote:
>---One of the problems of using rigid facilities -- amply
>illustrates my point.  Arrays don't often have fixed sizes.
>The size depends on the problem.  One day, it might be 10,
>next day, 300, day after, 90.
>
>   Are you seriusly suggesting that EACH time the program
>is run that it be edited and recompiled?  And what
>happens -- as is often the case -- the size of the array
>changes DURING the run?

If this is your belief, then you are SERIOUSLY missing the point.

If you have software where the array size MIGHT change, then you write
your software to support that.  You MIGHT decide to make the array
size a constant and recompile when needed (it's a valid choice,
although not one I'd make), you also MIGHT allow your array to grow as
more things are added to it.  These things are easy to handle.

The point of the discussion, however, was situations where you indexed
outside an array, which is so damn easy in C that EVERY book I've seen
in C says, "be careful not to do this!"

There is a VERY considerable difference between adding something to an
array in a manner such that the array size grows with the addition,
and indexing outside an array, such that you're now lost in the middle
of memory-land and can't figure out why your program gives (most
likely) unrepeatable errors.

-- 
    Visit the Ada 95 Booch Components Homepage: www.ocsystems.com/booch
           This is not your father's Ada -- lglwww.epfl.ch/Ada




  parent reply	other threads:[~1996-06-11  0:00 UTC|newest]

Thread overview: 100+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <4p0fdd$4ml@news.atlantic.net>
1996-06-04  0:00 ` next "big" language?? (disagree) Peter Hermann
1996-06-04  0:00   ` The Amorphous Mass
1996-06-04  0:00     ` Robert Dewar
1996-06-06  0:00       ` Ken Garlington
1996-06-12  0:00       ` Help making ada pretty CSC Trusted Systems Group
1996-06-14  0:00         ` Sandy McPherson
1996-06-19  0:00         ` Ruediger Berlich
1996-06-04  0:00     ` next "big" language?? (disagree) Peter Hermann
1996-06-04  0:00       ` The Amorphous Mass
1996-06-05  0:00         ` Michael David WINIKOFF
1996-06-07  0:00           ` Robert Dewar
1996-06-05  0:00     ` Ian Ward
1996-06-05  0:00       ` The Amorphous Mass
1996-06-08  0:00         ` Robert Dewar
1996-06-08  0:00           ` The Amorphous Mass
1996-06-09  0:00             ` Robert Dewar
1996-06-08  0:00         ` Robert Dewar
1996-06-05  0:00   ` ++           robin
1996-06-05  0:00     ` Ian Ward
1996-06-05  0:00       ` Ian Ward
1996-06-06  0:00         ` Richard Riehle
1996-06-07  0:00           ` Robert Dewar
1996-06-10  0:00             ` Richard Riehle
1996-06-07  0:00           ` Richard Riehle
1996-06-08  0:00             ` O'Connor
1996-06-11  0:00           ` ++           robin
1996-06-11  0:00             ` James_Rogers
1996-06-11  0:00               ` Kevin J. Weise
1996-06-11  0:00             ` David Weller [this message]
1996-06-11  0:00             ` Chris Warack <sys mgr>
1996-06-11  0:00         ` ++           robin
1996-06-11  0:00           ` Ian Ward
1996-06-12  0:00             ` ++           robin
1996-06-12  0:00               ` Ian Ward
1996-06-11  0:00       ` Jon S Anthony
     [not found]   ` <4p60nk$imd@euas20.eua.ericsson.se>
     [not found]     ` <4p8lmq$oq7@goanna.cs.rmit.edu.au>
1996-06-11  0:00       ` ++           robin
1996-06-11  0:00         ` A. Grant
1996-06-12  0:00           ` Robert Dewar
1996-06-17  0:00             ` A. Grant
1996-06-18  0:00               ` Robert Dewar
1996-06-24  0:00                 ` Robert I. Eachus
1996-06-26  0:00                   ` Norman H. Cohen
1996-06-19  0:00             ` Jon S Anthony
1996-06-20  0:00               ` Robert Dewar
1996-06-24  0:00                 ` Adam Beneschan
1996-06-24  0:00                 ` Dale Stanbrough
1996-06-24  0:00                   ` Robert Dewar
1996-06-24  0:00                   ` Adam Beneschan
1996-06-24  0:00                   ` Assertions (was: Re: next "big" language?? (disagree)) Robert A Duff
1996-06-24  0:00                     ` Assertions (a different intent?) Gary McKee
1996-06-24  0:00                     ` Assertions (was: Re: next "big" language?? (disagree)) Robert Dewar
1996-06-25  0:00                       ` Robert A Duff
1996-06-28  0:00                         ` Robert Dewar
     [not found]                     ` <4qrljg$15l8@watnews1.watson.ibm.com>
1996-06-28  0:00                       ` Robert Dewar
1996-06-24  0:00                   ` next "big" language?? (disagree) hopkinc
1996-06-24  0:00                   ` Lars Duening
1996-06-26  0:00                   ` Marc C. Brooks
1996-06-26  0:00                   ` Marc C. Brooks
     [not found]                   ` <4qsbm7$r1s@Starbase.NeoSoft.COM>
1996-06-28  0:00                     ` "Assert"? "Assume"? (was: next "big" language?? (disagree)) Alexander Bunkenburg
1996-06-28  0:00                       ` Ian Collier
1996-07-01  0:00                     ` Cameron Laird
1996-06-24  0:00                 ` next "big" language?? (disagree) Keith Thompson
1996-06-25  0:00                   ` Simon Read
1996-06-25  0:00                   ` Robert A Duff
1996-06-25  0:00                 ` Brian Nettleton @pulsar
1996-06-26  0:00                   ` Robert Dewar
1996-06-28  0:00                     ` Fergus Henderson
1996-06-28  0:00                       ` Robert Dewar
1996-06-30  0:00                         ` Fergus Henderson
1996-06-30  0:00                           ` Robert Dewar
1996-06-25  0:00                 ` Darin Johnson
1996-06-26  0:00                   ` Dale Stanbrough
1996-06-26  0:00                   ` A. Grant
1996-06-12  0:00           ` ++           robin
1996-06-12  0:00             ` A. Grant
1996-06-14  0:00               ` Richard A. O'Keefe
1996-06-12  0:00         ` Richard A. O'Keefe
1996-06-12  0:00           ` ++           robin
1996-06-12  0:00             ` Richard A. O'Keefe
1996-06-13  0:00               ` ++           robin
1996-06-13  0:00               ` ++           robin
1996-06-12  0:00   ` Jon S Anthony
1996-06-14  0:00   ` Jon S Anthony
1996-06-15  0:00   ` Jon S Anthony
1996-06-18  0:00     ` Adam Beneschan
1996-06-18  0:00   ` Jon S Anthony
1996-06-28  0:00     ` Assertions (an heretic view) Michel Gauthier
1996-06-28  0:00       ` Robert Dewar
1996-06-28  0:00       ` Robert A Duff
1996-06-06  0:00 ` next "big" language?? (disagree) Dale Pontius
1996-06-11  0:00 ` Jon S Anthony
1996-06-12  0:00 ` Help making ada pretty Pedro de las Heras
1996-06-18  0:00 ` next "big" language?? (disagree) ++           robin
1996-06-07  0:00 Ian Ward
1996-06-08  0:00 ` O'Connor
1996-06-10  0:00   ` Matt Kennel
1996-06-11  0:00     ` Ian Ward
1996-06-12  0:00       ` Norman H. Cohen
1996-06-11  0:00     ` Robb Nebbe
1996-06-09  0:00 ` Robert Dewar
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