From: Neil Jerram <neil@ossau.uklinux.net>
To: Chengqi Song <songcq@gmail.com>
Cc: guile-user <guile-user@gnu.org>, Thien-Thi Nguyen <ttn@gnuvola.org>
Subject: Re: typo in guile doc?
Date: Sun, 27 Dec 2009 12:52:17 +0000 [thread overview]
Message-ID: <87ljgo1svy.fsf@ossau.uklinux.net> (raw)
In-Reply-To: <87skawhd7p.fsf@ambire.localdomain> (Thien-Thi Nguyen's message of "Sun, 27 Dec 2009 12:24:10 +0100")
Thien-Thi Nguyen <ttn@gnuvola.org> writes:
> () Chengqi Song <songcq@gmail.com>
> () Sun, 27 Dec 2009 07:22:50 +0800
>
> "By calling this function, the garbage collector learns
> about all references that your SMOB has to other SCM values."
>
> what is "has to other SCM values"? is it a typo?
>
> Perhaps that object contains (points to, references) other
> sub-objects. The SMOB's mark function must call (back to) Guile's
> mark function for those sub-objects. In this way the collector learns.
> If the mark function fails to do that, the collector remains ignorant.
We could rewrite this as:
> "By calling this function, the garbage collector learns
> about the other SCM values (if any) that your SMOB refers to."
Would that be clearer?
Also please note that this is different in Guile 1.9.x. (In summary,
the mark function isn't needed any more.) If you're writing something
new, you may want to consider targeting Guile 1.9.x instead of 1.8.x.
Regards,
Neil
prev parent reply other threads:[~2009-12-27 12:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-26 23:22 typo in guile doc? Chengqi Song
2009-12-27 11:24 ` Thien-Thi Nguyen
2009-12-27 12:52 ` Neil Jerram [this message]
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