From: raveling@vaxb.isi.edu (Paul Raveling)
Subject: Re: "Forced to Use Ada"
Date: 15 Mar 89 17:29:42 GMT [thread overview]
Message-ID: <7784@venera.isi.edu> (raw)
In-Reply-To: 163@csv.viccol.edu.au
In article <163@csv.viccol.edu.au> dougcc@csv.viccol.edu.au (Douglas Miller) writes:
>
>In article <7682@venera.isi.edu>, raveling@vaxb.isi.edu (Paul Raveling) writes:
>
>> Suppose somone designed a language provably better than these --
>> if we mandate an existing standard, such as ADA or C, we risk
>> preserving a dinosaur at the expense of suffocating mammals.
>
>If ADA is already a dinosaur, what does that make COBOL, a diatom?
Maybe a trilobite? Languages that DOD has adopted as standards
to my knowledge are COBOL, JOVIAL, and ADA. Looking only at
pre-ADA history, DOD's standards haven't exactly dominated
the software engineering world on their own merits.
I don't mean to pick on ADA specifically -- it's just that
in my 26 years in computing people have kept learning how
to do a better job at essentially EVERYTHING. One year's
state of the art can be the trailing edge of technology
after a couple more years pass. In the last 15 years or so
though it's been MUCH harder to profit by that learning because
the industry has had a heavy dose of standards.
The bottom line is that I advocate "necessary and sufficient"
standards, keeping them as limited as possible to enable
reasonable software portability. If standards are small,
software using them can expand by adaptive radiation; if
standards are too comprehensive, software will be ecologically
specialized. A currently important limit of specialization
is the difficulty of building multi-process applications in a
"standard" UNIX environment.
>
>> That's my usual comment about UNIX, but it also suits languages.
>
>An operating system is a fundamentally different thing to a programming
>language. A programming language is much lower level --- this is where
>standards are really appropriate (analogy: no two models of motor car are
>(or should be) the same, yet many of the basic components conform to
>standards that enables a trained mechanic to do basic work on any car).
This is an interesting case to consider -- As a former
OS builder, I tend to think of it in the opposite sense,
with the OS being at a lower level. Typical OS interfaces
semantically have a lot in common with abstract data types.
In truth, it's something of a chicken-and-egg question
and both views are correct in various ways.
----------------
Paul Raveling
Raveling@isi.edu
next prev parent reply other threads:[~1989-03-15 17:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
1989-02-22 10:56 "Forced to Use Ada" Edward Berard
1989-02-27 23:28 ` Bob Hathaway
1989-03-01 23:49 ` A. Jeff Offutt
1989-03-02 20:04 ` Bob Hathaway
1989-03-03 17:21 ` Paul Raveling
1989-03-05 1:07 ` Bob Hathaway
1989-03-06 16:52 ` Ada vs. LISP Robert Eachus
1989-03-09 17:22 ` Tim King
1989-03-09 20:40 ` C++ vs. Ada (was Ada vs. LISP) Archie Lachner
1989-03-10 3:31 ` Ada vs. LISP John Gateley
1989-03-13 19:23 ` Robert Eachus
1989-03-12 16:22 ` Steven D. Litvintchouk
1989-03-15 1:33 ` "Forced to Use Ada" Douglas Miller
1989-03-15 17:29 ` Paul Raveling [this message]
1989-03-16 14:06 ` karl lehenbauer
1989-03-09 5:36 ` Harry S. Delugach
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox