From: bojohan+news@dd.chalmers.se (Johan Bockgård)
Subject: Re: Difficult macro question: Doing custom `let'
Date: Mon, 18 Aug 2003 20:00:19 +0200 [thread overview]
Message-ID: <yoijhe4edex8.fsf@frealaf.dd.chalmers.se> (raw)
In-Reply-To: 1xviq2u3.fsf@blue.sea.net
jari.aalto@poboxes.com (Jari Aalto+mail.emacs) writes:
> I'm trying to make a custom `let' macro. The basic idea is that the
> variables defined inside `let' should be user defined and the `let'
> form simply should set them to nil. Something like:
,----[ C-h f progv RET ]
| progv is a Lisp macro in `cl-macs'.
| (progv SYMBOLS VALUES &rest BODY)
|
| Bind SYMBOLS to VALUES dynamically in BODY.
| The forms SYMBOLS and VALUES are evaluated, and must evaluate to lists.
| Each SYMBOL in the first list is bound to the corresponding VALUE in the
| second list (or made unbound if VALUES is shorter than SYMBOLS); then the
| BODY forms are executed and their result is returned. This is much like
| a `let' form, except that the list of symbols can be computed at run-time.
`----
--
Johan Bockgård
next prev parent reply other threads:[~2003-08-18 18:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-18 17:43 Difficult macro question: Doing custom `let' Jari Aalto+mail.emacs
2003-08-18 17:57 ` Barry Margolin
2003-08-18 18:00 ` Johan Bockgård [this message]
2003-08-18 21:20 ` Pascal Bourguignon
-- strict thread matches above, loose matches on Subject: below --
2003-08-18 18:20 lawrence mitchell
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