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Re: Use of foreign objects to wrap anything other than an integer
From: |
divoplade |
Subject: |
Re: Use of foreign objects to wrap anything other than an integer |
Date: |
Tue, 26 May 2020 00:10:35 +0200 |
User-agent: |
Evolution 3.30.5-1.1 |
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
>
>