From: divoplade <d@divoplade.fr>
To: guile-user@gnu.org
Subject: Re: Use of foreign objects to wrap anything other than an integer
Date: Tue, 26 May 2020 00:10:35 +0200 [thread overview]
Message-ID: <faa014c77eccec1170627bc2aeeb166282fd35a4.camel@divoplade.fr> (raw)
In-Reply-To: <6e359810021ed654dd38e72017e07d5b4b88ba38.camel@divoplade.fr>
OK, nevermind, I did not understand correctly how it worked.
Le mardi 26 mai 2020 à 00:04 +0200, divoplade a écrit :
> Hello,
>
> How do I use the foreign object type?
>
> When I do:
>
> (use-modules (system foreign-object))
> (use-modules (oop goops))
> (define-foreign-object-type <thing> make-thing (x) #:finalizer
> (lambda
> (x) #t))
> (make-thing "hello")
>
> I get:
> ERROR: In procedure struct-set!/unboxed:
> Wrong type (expecting exact integer): "hello"
>
> I thought it might be some kind of a bug, but it is the same thing
> for
> 3.0.2, 2.2.7 and 2.2.4 (guix) and 2.2.4 (debian). 2.2 is the first
> to
> introduce the foreign objects.
>
> How should I do it?
>
> divoplade
>
>
prev parent reply other threads:[~2020-05-25 22:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-25 22:04 Use of foreign objects to wrap anything other than an integer divoplade
2020-05-25 22:10 ` divoplade [this message]
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