From: Yutaka OIWA <oiwa@yl.is.s.u-tokyo.ac.jp>
To: Oleg <oleg_inconnu@myrealbox.com>
Cc: Caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Q: safe language
Date: 31 Aug 2002 01:09:11 +0900 [thread overview]
Message-ID: <vfiznv449co.fsf@tuba.is.s.u-tokyo.ac.jp> (raw)
In-Reply-To: Oleg's message of "Fri, 30 Aug 2002 09:46:50 -0400"
>> On Fri, 30 Aug 2002 09:46:50 -0400, Oleg <oleg_inconnu@myrealbox.com> said:
> On Friday 30 August 2002 09:05 am, David Frese wrote:
>> > (cadr '(1))
>>
>> This shows that Lisp is safe, because it results in an error, and does
>> not return some value from out of nowhere (or does it).
> On Debian CMUCL it returns NIL.
In Common Lisp, the cdr of () is defined to be (). The car of () is also ().
I personally hate this definition :-(
# car x = car y, cdr x = cdr y, but x <> y
# if x = (()) and y = ()
--
Yutaka Oiwa Yonezawa Lab., Dept. of Computer Science,
Graduate School of Information Sci. & Tech., Univ. of Tokyo.
<oiwa@yl.is.s.u-tokyo.ac.jp>, <yutaka@oiwa.shibuya.tokyo.jp>
PGP fingerprint = C9 8D 5C B8 86 ED D8 07 EA 59 34 D8 F4 65 53 61
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next prev parent reply other threads:[~2002-08-30 16:09 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-30 1:36 SooHyoung Oh
2002-08-30 8:41 ` sebastien FURIC
2002-08-30 12:44 ` Vitaly Lugovsky
2002-08-30 13:05 ` David Frese
2002-08-30 13:46 ` Oleg
2002-08-30 16:09 ` Yutaka OIWA [this message]
2002-08-30 13:49 ` Vitaly Lugovsky
2002-08-30 14:04 ` J Farrand
2002-08-30 14:26 ` Vitaly Lugovsky
2002-08-30 14:48 ` Nicolas Cannasse
2002-08-30 15:31 ` Vitaly Lugovsky
2002-08-30 14:55 ` Mike Lin
2002-08-30 14:58 ` Eric Newhuis
2002-08-30 16:03 ` Yutaka OIWA
2002-08-30 21:44 ` Oliver Bandel
2002-09-01 8:07 ` John Max Skaller
2002-08-30 14:50 ` David Frese
2002-08-30 15:38 ` Vitaly Lugovsky
2002-08-30 15:28 ` didier plaindoux
2002-08-30 14:41 ` Florian Hars
2002-08-30 14:42 ` Nicolas Cannasse
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