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From: Edward Fish <edward.r.fish@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: How do I write directly to a memory address?
Date: Wed, 2 Mar 2011 16:46:47 -0800 (PST)
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Date: 2011-03-02T16:46:47-08:00
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On Mar 2, 4:26=A0pm, Hyman Rosen <hyro...@mail.com> wrote:
>
> As it stands, anyone who wishes to have software written with
> such exactitude is free to pay for it, and many do, in exactly
> the cases you indicated where the cost of error is prohibitively
> high.

And in exactly those cases Ada seems to be [empirically] the
forerunner/center-stage-star... so, what was your complaint?

Ada can't prevent logic-errors, or misunderstandings, or misdesigns
from ever occurring; no programming language can. A programming
language *CAN* help to reduce those, however. I believe that Ada
does, in fact, do this; one way Ada does so is with Strong Typing
{now strong-typing can be circumvented via Unchecked_Conversion, or
even (by choice of the programmer) not employed}. Having a separate
Integer-type for, say, GALLONS and for POUNDS, and for MILES without
*implicit* conversions between them is one concrete example; there
is nothing barring the programmer from having all of those be SubType
of Integer (Range Integer'Range) and freely mixing them as might be
easily done in a C, Java, Assembler or even Pascal program.
is