From: Kjetil Svalastog Matheussen <k.s.matheussen@notam02.no>
Cc: guile-user@gnu.org,
Kjetil Svalastog Matheussen <k.s.matheussen@notam02.no>
Subject: Re: Order of the evaluation of elements in a quasiquote list.
Date: Sun, 3 Apr 2005 13:38:04 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.58.0504031330540.14353@notam02.uio.no> (raw)
In-Reply-To: <424FB34D.6040304@ossau.uklinux.net>
On Sun, 3 Apr 2005, Neil Jerram wrote:
> Kjetil Svalastog Matheussen wrote:
> > Hi, I have recently stumbled upon various bugs in my code
> > because the order of the evaluation of the elements in a quasiquote
> > list changes.
>
> Changes how? Can you give us an example, to make things concrete?
>
Sorry, this is the stripped down version of the cause of the bug I'm
finding various places:
(let ((a 1))
`( ,(begin (set! a 2) a)
,a))
-> (2 1)
Wouldn't it be better if this one returned (2 2)?
Also, I'm seeing different behaviour in the order of evaluation between
1.6.4 and 1.7 (doesn't have the code available now). I think that is
really bad actually...
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next prev parent reply other threads:[~2005-04-03 11:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-02 18:52 Order of the evaluation of elements in a quasiquote list Kjetil Svalastog Matheussen
2005-04-03 9:11 ` Neil Jerram
2005-04-03 11:38 ` Kjetil Svalastog Matheussen [this message]
2005-04-03 11:59 ` rm
2005-04-03 12:09 ` Kjetil Svalastog Matheussen
2005-04-03 13:01 ` Geoffrey Knauth
[not found] <cmu-lmtpd-25765-1112693521-1@mail-imap5.uio.no>
2005-04-05 14:23 ` Kjetil Svalastog Matheussen
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