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From: kevin@aimnet.com (Kevin Dalley)
Subject: Re: Ada is almost useless in embedded systems
Date: 1996/03/16
Date: 1996-03-16T00:00:00+00:00	[thread overview]
Message-ID: <8720mtndal.fsf@aplysia.iway.aimnet.com> (raw)
In-Reply-To: 823906039.22113@assen.demon.co.uk

>>>>> "Laurent" == Laurent Guerby <Laurent.Guerby@enst-bretagne.fr> writes:

> Scott H. James writes

> : (5) Verbosity: Ada has all of C's unary and binary operators, but Ada
> :     requires C's assignment operators to be spelled out. This is an
> :     aesthetic issue, and possibly a readability issue.

> Readability  for what ???  I always thought that a+=b  was  a hint for
> poor optimizers. But that's a matter of taste ;-)

I once thought that.  Currently, I find that it is more clear for
programmers, and less prone to error then spelling out the same same
variable twice.  This is particularly true if the variable name is
long, for example an element of an array or of a structure:

	fred->array[x+i] += 5;

is much easier for a human to understand than:

	fred->array[x+i] = fred->array[x+i] + 5;

and easier to distinguish from:

	fred->array[x+i] = fred->array[x+i-1] + 5;

kevin

-- 
kevin
kevin@aimnet.com




  parent reply	other threads:[~1996-03-16  0:00 UTC|newest]

Thread overview: 80+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <823906039.22113@assen.demon.co.uk>
     [not found] ` <4fgrq3$mc4@qualcomm.com>
     [not found]   ` <dewar.823962356@schonberg>
1996-02-17  0:00     ` Ada is almost useless in embedded systems Tore Joergensen
1996-02-17  0:00       ` Robert Dewar
1996-02-19  0:00       ` Keith Thompson
1996-02-19  0:00         ` John McCabe
1996-02-21  0:00           ` Richard A. O'Keefe
1996-02-21  0:00             ` Norman H. Cohen
1996-02-19  0:00 ` R.A.L Williams
1996-02-21  0:00   ` Richard A. O'Keefe
1996-02-19  0:00 ` AdaWorks
1996-02-21  0:00   ` Ken Garlington
1996-02-23  0:00     ` AdaWorks
1996-02-19  0:00 ` Jon S Anthony
     [not found] ` <824056183.18993@assen.demon.co.uk>
     [not found]   ` <311E924E.74CE@escmail.orl.mmc.com>
1996-02-17  0:00     ` Ada is great for embedded systems (was Ada is almost useless in embedded systems) Ken & Virginia Garlington
     [not found]   ` <4fnqpm$3nh@news.sanders.lockheed.com>
1996-02-19  0:00     ` Ada is almost useless in embedded systems AdaWorks
1996-02-21  0:00       ` Ken Garlington
1996-02-21  0:00       ` Hugh Dunne
     [not found]   ` <4fnp37$nj1@theopolis.orl.mmc.com>
1996-02-22  0:00     ` Alan Brain
1996-02-26  0:00 ` R.A.L Williams
     [not found]   ` <4h3q56$1vk@goanna.cs.rmit.EDU.AU>
     [not found]     ` <dewar.825635955@schonberg>
     [not found]       ` <826571250.140@assen.demon.co.uk>
     [not found]         ` <dewar.826634800@schonberg>
1996-03-21  0:00           ` John McCabe
1996-03-23  0:00             ` Side-effect arithmetic again [was: Ada ... in embedded systems] John G. Volan
1996-03-23  0:00               ` Robert Dewar
1996-03-25  0:00                 ` Tucker Taft
1996-03-25  0:00                   ` Robert A Duff
1996-03-25  0:00                   ` Norman H. Cohen
1996-03-26  0:00               ` John G. Volan
1996-03-26  0:00                 ` Robert A Duff
1996-03-26  0:00                   ` Tore Joergensen
1996-03-27  0:00                     ` John G. Volan
1996-03-28  0:00                       ` Tucker Taft
1996-03-28  0:00                         ` Robert Dewar
1996-03-29  0:00                           ` Tucker Taft
1996-03-29  0:00                             ` Tucker Taft
1996-03-27  0:00                     ` John G. Volan
1996-03-29  0:00                       ` Robert A Duff
1996-03-30  0:00                         ` John G. Volan
1996-03-31  0:00                           ` AdaWorks
1996-04-01  0:00                           ` Robert A Duff
1996-03-30  0:00                         ` John G. Volan
1996-03-27  0:00                     ` John G. Volan
1996-03-26  0:00                 ` Robert Dewar
1996-03-29  0:00                   ` Robert I. Eachus
     [not found] ` <emery-0902962215150001@line316.nwm.mindlink.net>
     [not found]   ` <DMoA85.52I@eskimo.com>
     [not found]   ` <823965654.4500@assen.demon.co.uk>
     [not found]     ` <824165619.14894@assen.demon.co.uk>
     [not found]       ` <JSA.96Feb13133713@organon.com>
     [not found]         ` <824332550.2485@assen.demon.co.uk>
1996-02-17  0:00           ` Ada is almost useless in embedded systems Ken & Virginia Garlington
1996-02-17  0:00             ` Robert Dewar
1996-02-18  0:00               ` John McCabe
1996-02-18  0:00                 ` Robert Dewar
1996-02-19  0:00                   ` John McCabe
     [not found]         ` <824259217.26321@assen.demon.co.uk>
1996-02-17  0:00           ` Robert Dewar
1996-02-18  0:00             ` John McCabe
1996-02-18  0:00               ` Robert Dewar
1996-02-19  0:00                 ` John McCabe
1996-02-20  0:00                   ` Robert Dewar
1996-02-21  0:00                   ` Fergus Henderson
     [not found]       ` <4fs7ml$cf1@rational.rational.com>
1996-02-26  0:00         ` Ada 83 " Alan Brain
     [not found] ` <RALW.96Feb28100925@vulcan.gmrc.gecm.com>
1996-03-15  0:00   ` Ada is almost useless " Robert I. Eachus
1996-03-18  0:00     ` Alan Brain
     [not found]       ` <4ik5bm$ogg@dayuc.dayton.saic.com>
1996-03-18  0:00         ` Side-effect arithmetic again [was: Ada ... in embedded systems] Robert Dewar
1996-03-19  0:00           ` Norman H. Cohen
1996-03-19  0:00           ` Jay Martin
1996-03-21  0:00             ` Robert I. Eachus
     [not found]     ` <dirk.827148504@demokrit>
1996-03-18  0:00       ` Ada is almost useless in embedded systems David Weller
     [not found]   ` <dewar.825775334@schonberg>
     [not found]     ` <RALW.96Mar8113005@vulcan.gecm.com>
     [not found]       ` <4hv2fb$6ra@cville-srv.wam.umd.edu>
     [not found]         ` <4xybp895y6.fsf@leibniz.enst-bretagne.fr>
     [not found]           ` <3144CC40.33A0@escmail.orl.mmc.com>
     [not found]             ` <dewar.826604375@schonberg>
     [not found]               ` <3145FF2C.6139@escmail.orl.mmc.com>
     [not found]                 ` <dewar.826829407@schonberg>
     [not found]                   ` <31499D21.1DA6@escmail.orl.mmc.com>
1996-03-15  0:00                     ` Bug or Limitation? (was: Ada is almost useless in embedded systems) Robert Dewar
1996-03-16  0:00                       ` Ted Dennison
1996-03-20  0:00                         ` Side-effect arithmetic again [was: Ada ... in embedded systems] Robert I. Eachus
1996-03-20  0:00                           ` Robert A Duff
1996-03-21  0:00                             ` Peter Hermann
1996-03-21  0:00                               ` Robert Dewar
1996-03-25  0:00                                 ` Robert I. Eachus
1996-03-28  0:00                               ` Mats Weber
1996-03-29  0:00                                 ` John G. Volan
1996-03-20  0:00                           ` John G. Volan
1996-03-22  0:00                             ` Alan Brain
1996-03-21  0:00                           ` Geert Bosch
1996-03-26  0:00                           ` Mats Weber
1996-03-16  0:00 ` Kevin Dalley [this message]
     [not found] <9603131418.AA01642@eight-ball>
1996-03-15  0:00 ` Ada is almost useless in embedded systems Norman H. Cohen
1996-03-15  0:00   ` Robert Dewar
1996-03-18  0:00   ` Stephen Crawley
1996-03-18  0:00   ` Peter Hermann
1996-03-18  0:00     ` Robert Dewar
1996-03-19  0:00 ` Laurent Guerby
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