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From: "Stephen J. Turnbull" <stephen@xemacs.org>
To: Vitalie Spinu <spinuvit@gmail.com>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: Re: Replacement for `aput' from obsolete assoc.el?
Date: Sun, 10 Jun 2012 21:53:18 +0900	[thread overview]
Message-ID: <87k3zf8h1d.fsf@uwakimon.sk.tsukuba.ac.jp> (raw)
In-Reply-To: <87d358vhy6.fsf@gmail.com>

Vitalie Spinu writes:

 > There is no way to associate multiple values at once. What is the
 > canonical way to do that?

I don't see such a great need for it.  The loop idiom you propose is
fine (except that I suppose in GNU Emacs you need to use `cl-loop', at
least in core).  In XEmacs, the canonical destructive idiom is

    (setq plist (canonicalize-lax-plist (nconc plist-new plist)))

which gives preference to entries in plist-new, and would be more
efficient (all of the functions are primitives implemented in C).

 > I find reasonable that this sort of functionality be in the core for all
 > available containers.

Reasonable, in some sense, yes.  That probably would pass in Common
Lisp, but as you're probably aware Emacs Lisp prefers simplicity over
generality for generality's sake.




  reply	other threads:[~2012-06-10 12:53 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-04 16:46 Replacement for `aput' from obsolete assoc.el? Michael Heerdegen
2012-06-05  3:27 ` Christopher Schmidt
2012-06-05 17:43   ` Stefan Monnier
2012-06-05 19:31     ` Michael Heerdegen
2012-06-05 22:52       ` Stefan Monnier
2012-06-08  7:57       ` Vitalie Spinu
2012-06-08 12:39         ` Stephen J. Turnbull
2012-06-08 19:50           ` Stefan Monnier
2012-06-09  8:59             ` Stephen J. Turnbull
2012-06-09  9:46               ` Andreas Schwab
2012-06-09 10:13                 ` Thien-Thi Nguyen
2012-06-10 12:11                   ` Stephen J. Turnbull
2012-06-09 16:11                 ` Drew Adams
2012-06-09 16:17                   ` Drew Adams
2012-06-09 11:32               ` Vitalie Spinu
2012-06-10 12:53                 ` Stephen J. Turnbull [this message]
2012-06-09 16:10               ` Drew Adams
2012-06-10  0:52               ` Stefan Monnier
2012-06-10 13:48                 ` Stephen J. Turnbull

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