From: je@bton.ac.uk (John English)
Subject: Re: private and limited private
Date: 1996/10/21
Date: 1996-10-21T00:00:00+00:00 [thread overview]
Message-ID: <54g9a8$6tr@saturn.brighton.ac.uk> (raw)
In-Reply-To: DzEI6q.11tK@imagin.net
Samuel Mize (smize@imagin.net) wrote:
: In article <53vmmb$560@saturn.brighton.ac.uk>,
: John English <je@bton.ac.uk> wrote:
: >Actually, playing cards would be better represented by a limited type
: >with a Move (as opposed to a Copy) primitive, since in the real world
: >you move cards from A to B, you don't *copy* them.
: But you can remember which cards have been played* (that's why casinos
: use several decks at the Blackjack tables)**. That's hard to represent
: with a limited type -- your "player" program can't make a "mental copy"
: of the values it's seen.
You can certainly extract the suit and value of a card, and you could
remember those. You wouldn't be able to use that information to
manufacture a counterfeit card, any more than remembering what the
Ace of Spades looks like will allow you to materialise one from
behind your ear.
---------------------------------------------------------------
John English | mailto:je@brighton.ac.uk
Senior Lecturer | http://www.comp.it.bton.ac.uk/je
Dept. of Computing | fax: (+44) 1273 642405
University of Brighton |
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prev parent reply other threads:[~1996-10-21 0:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
1996-10-08 0:00 private and limited private AGBOH CHARLES
1996-10-10 0:00 ` Matthew Heaney
1996-10-10 0:00 ` David Kirkland
1996-10-11 0:00 ` Samuel Mize
1996-10-15 0:00 ` John English
1996-10-15 0:00 ` Pat Rogers
1996-10-17 0:00 ` Samuel Mize
1996-10-21 0:00 ` John English [this message]
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