From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "Štěpán Němec" <stepnem@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: Shouldn't records be sequences?
Date: Sun, 12 Apr 2020 12:30:26 -0400 [thread overview]
Message-ID: <jwvlfn0r7yq.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <871rotdp21.fsf@gmail.com> ("Štěpán Němec"'s message of "Sun, 12 Apr 2020 11:35:34 +0200")
> Records currently seem a bit weird: `aref', `cl-loop''s "across" clause
> (which uses `aref'), `copy-sequence' support them; `substring' (which
> does support vectors) and other sequence functions do not.
My opinion is that records are not sequences, just like C's `structs`
and Java's objects are not sequences (e.g. it doesn't make much sense to
concatenate records or to take subsequences of them). Some of our
builtin functions operating on sequences also work on records, but
that's only motivated by the need for backward compatibility with code
which used to expect `cl-defstruct` to use vectors instead of records.
Stefan
next prev parent reply other threads:[~2020-04-12 16:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-12 9:35 Shouldn't records be sequences? Štěpán Němec
2020-04-12 12:03 ` Štěpán Němec
2020-04-12 16:30 ` Stefan Monnier [this message]
2020-04-12 16:46 ` Clément Pit-Claudel
2020-04-12 17:23 ` Stefan Monnier
2020-04-12 18:49 ` Clément Pit-Claudel
2020-04-12 17:02 ` Štěpán Němec
2020-04-12 19:14 ` Stefan Monnier
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