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From: Michael Heerdegen <michael_heerdegen@web.de>
To: Philipp Stephani <p.stephani2@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to specialize seq-concatenate and seq-into-sequence?
Date: Fri, 04 Mar 2022 22:54:24 +0100	[thread overview]
Message-ID: <87v8wtgz8v.fsf@web.de> (raw)
In-Reply-To: <4F58A846-36B5-4D52-88A1-9D6F63773679@gmail.com> (Philipp Stephani's message of "Fri, 4 Mar 2022 21:56:12 +0100")

Philipp Stephani <p.stephani2@gmail.com> writes:

> I guess the idea is that `seq-concatenate' can only be specialized for
> new *result* types, not for new *argument* types.

Likely.  But that won't be enough when more sequence types are added.

I think each argument that is not one of the default types should be
silently converted into the goal type before appending the sequences.
The generic function `seq-into' seems the right place to implement the
`seq-concatenate' semantics for new sequence types.

Michael.



  reply	other threads:[~2022-03-04 21:54 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-03 15:50 How to specialize seq-concatenate and seq-into-sequence? Philipp Stephani
2022-03-03 17:40 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-03 20:49   ` Philipp Stephani
2022-03-04  0:20     ` Stefan Monnier
2022-03-04  0:48       ` Philipp Stephani
2022-03-04  2:35         ` Michael Heerdegen
2022-03-04 14:31           ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-04 22:12             ` Michael Heerdegen
2022-03-04 23:02               ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-04 20:56           ` Philipp Stephani
2022-03-04 21:54             ` Michael Heerdegen [this message]
2022-03-04 13:31         ` Stefan Monnier

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