Clint Jeffery wrote:
Well, I have a copy of Steve Wampler's Ph.D. dissertation; Steve, is it
in print or online anywhere, or copyrighted, or can I make copies? :-)
I think it's safe to say it's not in print. Some company *scanned* it
in some years ago, dunno if that's still online. I'll have to find
my copy to check the copyright. The UofA may have laid claim to it...
Ah, found it (my eldest had borrowed it a while back). I own the
copyright, from 1981 (apparently, that's what it says). On the
other hand, I never gave whatever company scanned it permission
to do so, so maybe the UofA did something I've forgotten (I would have
thought they'd make me change the copyright if so, though).
You can make copies. I'm not sure why - looking at it I can spot any
number of typos that should have been caught 25 years ago.
Even in there the co-expression examples are pretty simple. The problem
is that any sufficiently short program involving co-expressions can be
implemented some other way without too much more difficulty. And in any
sufficiently long example, the role of co-expressions gets hidden in
whatever code does the real work...
The prime number sieve beats the producer/consumer aspect of
co-expressions pretty well to death in a small amount of code.
So the N-queens co-expression solution.
A more expansive example is Art's Unicon shell, which he's introducing
in an upcoming article. I suspect others have done interesting things.
(Clint, does mtIcon make use of co-expressions?)
For a while, I thought about trying to implement an exception handling
mechanism using co-expressions, but just never had the heart to dive in.
--
Steve Wampler [EMAIL PROTECTED]
The gods that smiled upon your birth are laughing now. -- fortune cookie
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