From: rfarris@serene.UUCP (Rick Farris)
Subject: comments on comments on reusability
Date: 23 Feb 89 20:41:47 GMT [thread overview]
Message-ID: <419@serene.UUCP> (raw)
In-Reply-To: 6093@medusa.cs.purdue.edu
In article <6093@medusa.cs.purdue.edu> rjh@cs.purdue.EDU (Bob Hathaway) writes:
> (I write)
> >|This seems to go backwards. Programmers should first design
> >|their software then implement it. You seem to be advocating
> >|implementation then design. The descriptive algorithm should
> >|come first, then the code.
> In article <9689@ihlpb.ATT.COM>, nevin1@ihlpb.ATT.COM (Liber) writes:
> >I have a problem with Top-Down programming (design then
> >implementation); it happens to be the same problem I have with
> >Bottom-Up programming (implementation then design). You so eloquently
> >point it out in your next sentence:
Something that neither one of you guys addressed, and that I think is
crucial to the whole "Top-Down Design" issue, is reusability.
Top-down design implies leaves that are custom made for the program
at hand. Reusability implies molding the problem definition around
leaf (and maybe not-so-leaf) modules that are already available.
After all, for a hardware design, you wouldn't design your own ICs,
would you?
One of Ada's major strengths is it's facilities to design for re-use,
and we designers have to come to grips with the idea that we're not
going to be doing "optimal" designs anymore.
> |Just follow the convention that when code is updated so are the
> |comments.
Hmm. That's ok when you're working on small projects. I've never
seen it work in real-life when many programmers were involved.
Rick Farris RF Engineering POB M Del Mar, CA 92014 voice (619) 259-6793
rfarris@serene.cts.com ...!uunet!serene!rfarris serene.UUCP 259-7757
next prev parent reply other threads:[~1989-02-23 20:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1813@goofy.megatest.UUCP>
1989-02-10 21:16 ` comments on comments Bob Hathaway
[not found] ` <20233@agate.BERKELEY.EDU>
[not found] ` <9689@ihlpb.ATT.COM>
1989-02-23 2:15 ` Bob Hathaway
1989-02-23 7:22 ` Dave Jones
1989-02-23 22:50 ` Good Design Strategies <Was comments on comments> Bob Hathaway
1989-02-25 1:07 ` Dave Jones
1989-02-26 19:34 ` Rob Jellinghaus
1989-02-27 0:58 ` William Thomas Wolfe,2847,
1989-02-27 15:29 ` John Baugh
1989-02-27 18:29 ` Reuseable Ada components William Thomas Wolfe,2847,
1989-02-28 0:53 ` Good Design Strategies <Was comments on comments> Bob Hathaway
1989-02-28 22:13 ` Dave Jones
1989-03-03 5:45 ` Bob Hathaway
1989-03-08 17:14 ` David P. Schneider
1989-03-11 11:15 ` Stuart H. Ferguson
1989-02-24 1:57 ` comments on comments William Thomas Wolfe,2847,
1989-02-23 20:41 ` Rick Farris [this message]
1989-02-24 2:15 ` comments on " William Thomas Wolfe,2847,
1989-02-24 3:31 ` William A. Bralick
1989-02-24 9:24 ` Rick Farris
1989-02-25 14:28 ` Robert Claeson
1989-03-09 21:12 ` Rick Clements
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