From: Per Bothner <per@bothner.com>
Cc: Sven Hartrumpf <Sven.Hartrumpf@FernUni-Hagen.de>, guile-user@gnu.org
Subject: Re: stupid mail about letrec
Date: Mon, 25 Mar 2002 10:33:46 -0800 [thread overview]
Message-ID: <3C9F6D8A.9050000@bothner.com> (raw)
In-Reply-To: 87vgbk1vqw.fsf@becket.becket.net
Thomas Bushnell, BSG wrote:
> Sven Hartrumpf <Sven.Hartrumpf@FernUni-Hagen.de> writes:
>
>>>So chicken and MIT-scheme don't give you an error for the letrec
>>>expression that you quoted before?
>>
>>No, all return 8 for (letrec ((a 2) (b (* a 4))) b).
>>Also mzscheme, bigloo, chez, sisc, scsh, gauche, gambit.
>>Only SCM behaves like guile.
>>This might make an interesting posting in comp.lang.scheme :-)
>
>
> Yes, but it is an error nontheless.
But an error that implementations are not requied to detect.
And it is not unreasonable to consider this an implementation
extension.
--
--Per Bothner
per@bothner.com http://www.bothner.com/per/
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next prev parent reply other threads:[~2002-03-25 18:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-25 13:02 stupid mail about letrec Sven Hartrumpf
2002-03-25 16:02 ` Thomas Bushnell, BSG
2002-03-25 18:33 ` Per Bothner [this message]
2002-03-25 18:50 ` Marius Vollmer
2002-03-25 19:48 ` Neil Jerram
-- strict thread matches above, loose matches on Subject: below --
2002-03-21 17:22 Sebastien.deMentendeHorne
2002-03-21 23:09 ` Neil Jerram
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