GNU bug report logs - #40562
[patch] Treat records as arrays in ert object comparisons and add support for cl-structs

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Message #14 received at 40562 <at> debbugs.gnu.org (full text, mbox):

From: Štěpán Němec <stepnem <at> gmail.com>
To: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
Cc: lars <lars <at> nocrew.org>, 40562 <at> debbugs.gnu.org
Subject: Re: bug#40562: [patch] Treat records as arrays in ert object
 comparisons and add support for cl-structs
Date: Sun, 12 Apr 2020 11:24:41 +0200

On Sat, 11 Apr 2020 23:06:47 -0400
Clément Pit-Claudel wrote:

> On 11/04/2020 19.26, Štěpán Němec wrote:
>> This is incorrect, as witnessed by your very example (`c' instead of
>> `b'). Records are accessible with `aref', but the first slot is the type
>> descriptor, so you're making an off-by-one error here.
>
> Of course, it should be `for slot in (cl-struct-slot-info (type-of
> a))` not `for slot in (cdr (cl-struct-slot-info (type-of a)))`.
> Updated patch attached.

Hm, except now you're duplicating the (eq (type-of a) (type-of b))
check. I'm not quite sure it's worth complicating the code to avoid
that, though, given how clumsy records currently seem to be to work with
(most sequence functions don't support them).

-- 
Štěpán

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