From: Lars Brinkhoff <lars@nocrew.org>
To: emacs-devel@gnu.org
Subject: What is a "sequence"?
Date: Fri, 07 Apr 2017 15:07:54 +0200 [thread overview]
Message-ID: <86r3142wnp.fsf_-_@molnjunk.nocrew.org> (raw)
In-Reply-To: jwvvaqgv39i.fsf-monnier+gmane.emacs.devel@gnu.org
Stefan Monnier wrote:
>> I think there are only a few functions that wants a sequence but not a
>> record: elt, copy-sequence, concat, reverse, and sort. In the context
>> of structure operations, the most likely function would be copy-sequence.
>
> BTW, why not make copy-sequence and elt work on records? After all,
> they are "sequences" (of fixed length and of heterogeneous values, but
> still).
Sure. I did consider copy-sequence, but then you added copy-record. I
don't see a great need for elt, but it wouldn't hurt. Maybe it would be
good for backward compatibility.
In a similar vein, there are also some restrictions on what you can to
to byte-code objects. You can do aref and concat and even mapcar, but
not aset, and there's no function to make a copy. I guess a similar
argument could be made that they're "sequences".
next prev parent reply other threads:[~2017-04-07 13:07 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-05 15:31 Recent change in master breaks async package update using paradox Kaushal Modi
2017-04-05 16:05 ` Eli Zaretskii
2017-04-05 21:59 ` Tom Tromey
2017-04-05 22:48 ` Kaushal Modi
2017-04-06 5:00 ` Lars Brinkhoff
2017-04-06 10:46 ` Kaushal Modi
2017-04-06 11:00 ` Lars Brinkhoff
2017-04-06 11:28 ` Kaushal Modi
2017-04-06 12:12 ` Lars Brinkhoff
2017-04-06 12:22 ` Noam Postavsky
2017-04-06 12:36 ` Lars Brinkhoff
2017-04-06 11:19 ` Lars Brinkhoff
2017-04-07 5:42 ` Lars Brinkhoff
2017-04-07 7:25 ` Eli Zaretskii
2017-04-07 7:40 ` Lars Brinkhoff
2017-04-07 9:51 ` Eli Zaretskii
2017-04-07 13:28 ` Debugging problems using async.el Lars Brinkhoff
2017-04-07 14:11 ` Kaushal Modi
2017-04-07 14:39 ` Eli Zaretskii
2017-04-07 18:10 ` Lars Brinkhoff
2017-04-07 11:59 ` Recent change in master breaks async package update using paradox Stefan Monnier
2017-04-07 13:07 ` Lars Brinkhoff [this message]
2017-04-07 13:26 ` What is a "sequence"? Stefan Monnier
2017-04-07 16:56 ` If records are not sequences, why does aref work on records? Paul Eggert
2017-04-07 17:27 ` Lars Brinkhoff
2017-04-07 17:41 ` Drew Adams
2017-04-07 18:23 ` Lars Brinkhoff
2017-04-07 18:30 ` Drew Adams
2017-04-07 19:07 ` Noam Postavsky
2017-04-07 19:13 ` Stefan Monnier
2017-04-07 20:49 ` Drew Adams
2017-04-07 21:00 ` Clément Pit-Claudel
2017-04-07 21:02 ` Noam Postavsky
2017-04-08 1:58 ` Paul Eggert
2017-04-08 5:03 ` Lars Brinkhoff
2017-04-08 5:25 ` Lars Brinkhoff
2017-04-08 5:34 ` Noam Postavsky
2017-04-08 7:42 ` Paul Eggert
2017-04-08 7:50 ` Eli Zaretskii
2017-04-08 13:33 ` Noam Postavsky
2017-04-08 11:34 ` Philipp Stephani
2017-04-08 12:24 ` Clément Pit-Claudel
2017-04-08 15:24 ` Lars Brinkhoff
2017-04-08 17:17 ` Clément Pit-Claudel
2017-04-08 17:46 ` Lars Brinkhoff
2017-04-09 19:15 ` Richard Stallman
2017-04-11 12:27 ` Stefan Monnier
2017-04-07 19:25 ` Clément Pit-Claudel
2017-04-07 19:41 ` Noam Postavsky
2017-04-07 20:12 ` Clément Pit-Claudel
2017-04-07 19:43 ` Stefan Monnier
2017-04-07 17:59 ` Clément Pit-Claudel
2017-04-07 18:28 ` Recent change in master breaks async package update using paradox Lars Brinkhoff
2017-04-08 6:50 ` Lars Brinkhoff
2017-04-08 12:25 ` Clément Pit-Claudel
2017-04-08 13:35 ` Kaushal Modi
2017-04-08 18:21 ` Lars Brinkhoff
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