From: William Xu <william.xwl@gmail.com>
Subject: Re: stack overflow problem
Date: Sun, 05 Feb 2006 22:08:04 +0800 [thread overview]
Message-ID: <87fymxlwzf.fsf@www.williamxu.com> (raw)
In-Reply-To: <1139102293.923.16.camel@nocandy.dyndns.org> (Stephen Compall's message of "Sat, 04 Feb 2006 19:18:13 -0600")
Stephen Compall <s11@member.fsf.org> writes:
> On Sat, 2006-02-04 at 18:54 +0800, William Xu wrote:
>> (define (enumerate-interval low high)
>> "Return a sequence list by walking from LOW to HIGH.
>> e.g.,
>> (enumerate-interval 1 10)
>> => (1 2 3 4 5 6 7 8 9 10)"
>> (if (> low high)
>> '()
>> (cons low (enumerate-interval (1+ low) high))))
>>
>> When i passed it a slightly big interval, guile complains "stack
>> overflow",
>>
>>
>> Might be a bug? (i also tested this on mzscheme, and works fine.)
>
> Sorry, but while optimization of tail calls is guaranteed by R5RS,
> non-tail recursion to arbitrary depth is not. Try rewriting your code
> so that the recursive call is the "last thing" done;
Yeah, i understand that. But i thought this ought to be done
automatically in some way, not requiring user to do this manually, which
would make codes less readable, isn't it?
[...]
--
William
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next prev parent reply other threads:[~2006-02-05 14:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-04 10:54 stack overflow problem William Xu
2006-02-04 23:03 ` Chusslove Illich
2006-02-05 1:18 ` Stephen Compall
2006-02-05 14:08 ` William Xu [this message]
2006-02-13 18:08 ` Holger Blasum
-- strict thread matches above, loose matches on Subject: below --
2006-02-04 17:09 William Xu
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