From: Vitalie Spinu <spinuvit@gmail.com>
To: Michael Heerdegen <michael_heerdegen@web.de>
Cc: emacs-devel@gnu.org
Subject: Re: Replacement for `aput' from obsolete assoc.el?
Date: Fri, 08 Jun 2012 09:57:00 +0200 [thread overview]
Message-ID: <871ulq44oj.fsf@gmail.com> (raw)
In-Reply-To: <87haupwo6b.fsf@web.de> (Michael Heerdegen's message of "Tue, 05 Jun 2012 21:31:40 +0200")
> So I think I want something like that:
> (defun my-aput (alist-sym key val)
> (let ((cons (assoc key (symbol-value alist-sym))))
> (if cons (setcdr cons val) (push (cons key val) (symbol-value alist-sym)))))
>> >> instead of `eq')? Dunno why this function does not exist yet, but it
>> >> would ease handling alists e.g. if its keys are strings.
>>
>> Using side-effects on alists is often a bad idea.
> Why? I do this very often in my .emacs. For example:
This is essential. A lot of packages store settings in alists, and there
is no handy function to alter the values inside those.
I wish for a `setq-within':
(setq-within object
name1 value1
name2 value2
...
)
where OBJECT is any dict-like container - alist, plist or
hash-table.
Doesn't this make sense as a base emacs functionality?
Thanks,
Vitalie.
next prev parent reply other threads:[~2012-06-08 7:57 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 [this message]
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
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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