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Programming > Lisp > Re: delete comm...
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Re: delete command weirdness

by Kent M Pitman <pitman@[EMAIL PROTECTED] > May 15, 2008 at 07:18 PM

pjb@[EMAIL PROTECTED]
 (Pascal J. Bourguignon) writes:

> If you go this way, ALL the lisp operators (that take arguments) may
> take actually the value of a variable, and the result may be stored
> into that same variable, so they should all be defined as place
> modifying macros:
> 
> (deletef item list)            for (setf list (delete item list))

Just for historical completeness, DELETEF was the Maclisp name for
DELETE-FILE.  This is tickling a vague memory that there was a discussion
of adding a DELETEF as a SETF variant and having people say "maybe not".

Enough years have passed that this is probably not a fear any more.
But on the LispM, with both the old Maclisp names and the new CL names
active in the same environment (differing only by package) you can see
the fear it would lead to in designers not wanting to lead people down
the path to accidental file deletion.
 




 64 Posts in Topic:
delete command weirdness
Nathaniel Calloway <nt  2008-05-12 22:06:22 
Re: delete command weirdness
christopher.jay.jones@[EM  2008-05-12 20:18:16 
Re: delete command weirdness
vanekl <vanek@[EMAIL P  2008-05-12 20:30:24 
Re: delete command weirdness
Ken Tilton <kennytilto  2008-05-12 23:43:31 
Re: delete command weirdness
Nathaniel Calloway <nt  2008-05-13 01:18:20 
Re: delete command weirdness
Barry Margolin <barmar  2008-05-13 01:37:14 
Re: delete command weirdness
Barry Margolin <barmar  2008-05-13 01:42:59 
Re: delete command weirdness
Nathaniel Calloway <nt  2008-05-13 01:57:29 
Re: delete command weirdness
Peter Hildebrandt <pet  2008-05-13 09:51:03 
Re: delete command weirdness
usenet2.3.CalRobert@[EMAI  2008-05-13 20:59:47 
Re: delete command weirdness
usenet2.3.CalRobert@[EMAI  2008-05-13 19:06:55 
Re: delete command weirdness
Nathaniel Calloway <nt  2008-05-13 01:29:49 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-13 15:50:36 
Re: delete command weirdness
Paul Donnelly <paul-do  2008-05-13 01:49:29 
Re: delete command weirdness
Ken Tilton <kennytilto  2008-05-13 09:50:31 
Re: delete command weirdness
Nathaniel Calloway <nt  2008-05-13 12:01:12 
Re: delete command weirdness
Rainer Joswig <joswig@  2008-05-13 18:22:44 
Re: delete command weirdness
Peter Hildebrandt <pet  2008-05-13 18:28:33 
Re: delete command weirdness
Ken Tilton <kennytilto  2008-05-13 13:35:10 
Re: delete command weirdness
Nathaniel Calloway <nt  2008-05-13 13:58:57 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-14 12:21:22 
Re: delete command weirdness
Ken Tilton <kennytilto  2008-05-13 12:32:23 
Re: delete command weirdness
Geoffrey Summerhayes <  2008-05-13 01:06:51 
Re: delete command weirdness
Tomas Zellerin <zeller  2008-05-13 07:35:01 
Re: delete command weirdness
Peter Hildebrandt <pet  2008-05-13 17:58:20 
Re: delete command weirdness
David Crawford <crawfo  2008-05-13 09:16:36 
Re: delete command weirdness
kodifik@[EMAIL PROTECTED]  2008-05-13 09:53:06 
Re: delete command weirdness
Rainer Joswig <joswig@  2008-05-13 21:09:39 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-13 15:45:57 
Re: delete command weirdness
Matthias Benkard <mulk  2008-05-13 10:38:56 
Re: delete command weirdness
Matthias Benkard <mulk  2008-05-13 10:42:29 
Re: delete command weirdness
Matthias Benkard <mulk  2008-05-13 11:14:46 
Re: delete command weirdness
Barry Margolin <barmar  2008-05-14 00:06:12 
Re: delete command weirdness
danb <sogwaldan@[EMAIL  2008-05-13 13:51:59 
Re: delete command weirdness
Mark Wooding <mdw@[EMA  2008-05-14 11:50:12 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-14 14:27:46 
Re: delete command weirdness
Barry Margolin <barmar  2008-05-14 17:01:36 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-15 12:16:09 
Re: delete command weirdness
tar@[EMAIL PROTECTED] (T  2008-05-14 14:23:02 
Re: delete command weirdness
Don Geddis <don@[EMAIL  2008-05-14 10:21:20 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-15 12:28:05 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-15 19:18:21 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-16 09:45:07 
Re: delete command weirdness
tar@[EMAIL PROTECTED] (T  2008-05-16 09:43:25 
Re: delete command weirdness
tar@[EMAIL PROTECTED] (T  2008-05-15 09:14:35 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-15 19:20:58 
Re: delete command weirdness
Don Geddis <don@[EMAIL  2008-05-15 13:37:16 
Re: delete command weirdness
Lars Brinkhoff <lars.s  2008-05-17 09:22:21 
Re: delete command weirdness
"Steven M. Haflich&q  2008-05-12 22:06:07 
Re: delete command weirdness
Nathaniel Calloway <nt  2008-05-13 01:43:34 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-13 05:42:39 
Re: delete command weirdness
usenet2.3.CalRobert@[EMAI  2008-05-13 19:42:57 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-14 00:54:58 
Re: delete command weirdness
kodifik@[EMAIL PROTECTED]  2008-05-13 05:48:34 
Re: delete command weirdness
Leandro Rios <leandrop  2008-05-13 10:03:12 
Re: delete command weirdness
pjb@[EMAIL PROTECTED] (P  2008-05-13 15:56:28 
Re: delete command weirdness
Leandro Rios <leandrop  2008-05-13 11:07:01 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-13 15:35:05 
Re: delete command weirdness
kodifik@[EMAIL PROTECTED]  2008-05-13 07:13:40 
Re: delete command weirdness
rpw3@[EMAIL PROTECTED] (  2008-05-13 23:04:47 
Re: delete command weirdness
danb <sogwaldan@[EMAIL  2008-05-12 22:39:32 
Re: delete command weirdness
Kent M Pitman <pitman@  2008-05-13 06:27:32 
Re: delete command weirdness
danb <sogwaldan@[EMAIL  2008-05-13 04:10:36 
Re: delete command weirdness
tar@[EMAIL PROTECTED] (T  2008-05-13 15:53:53 

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tan12V112 Mon Oct 6 11:08:31 CDT 2008.