From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: Replacement for Common Lisp's GENSYM in Emacs Lisp
Date: Sun, 07 Mar 2010 23:55:26 -0500 [thread overview]
Message-ID: <jwvaaujjtwf.fsf-monnier+gnu.emacs.help@gnu.org> (raw)
In-Reply-To: m28wa3pyzv.fsf@gmail.com
>> (defmacro dotimes (xl e)
>> (let ((x (car xl))
>> (l (cadr xl)))
>> `(let ((body (lambda (,x) ,e))
>> (list ,l))
>> (while (consp list)
>> (funcall body (car list))
>> (setq list (cdr list))))))
>>
>> Notice how the expressions `l' and `e' are evaluated in a context where
>> neither of `body', nor `list' exist. No need for gensym.
> What makes you think that body and list aren't bound in e?
Nothing, but luckily it doesn't make any difference whether they are
or not.
Stefan
next prev parent reply other threads:[~2010-03-08 4:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.2359.1267888813.14305.help-gnu-emacs@gnu.org>
2010-03-06 16:10 ` Replacement for Common Lisp's GENSYM in Emacs Lisp David Kastrup
2010-03-06 16:35 ` Teemu Likonen
2010-03-07 7:07 ` Tim X
2010-03-07 19:06 ` Stefan Monnier
2010-03-07 22:07 ` Helmut Eller
2010-03-08 4:55 ` Stefan Monnier [this message]
2010-03-08 7:01 ` Helmut Eller
2010-03-09 2:33 ` Stefan Monnier
2010-03-06 15:19 Teemu Likonen
2010-03-07 5:48 ` tomas
2010-03-07 6:13 ` Teemu Likonen
[not found] ` <mailman.2390.1267942438.14305.help-gnu-emacs@gnu.org>
2010-03-11 22:48 ` Pascal J. Bourguignon
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