* Use of foreign objects to wrap anything other than an integer
@ 2020-05-25 22:04 divoplade
2020-05-25 22:10 ` divoplade
0 siblings, 1 reply; 2+ messages in thread
From: divoplade @ 2020-05-25 22:04 UTC (permalink / raw)
To: guile-user
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
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Use of foreign objects to wrap anything other than an integer
2020-05-25 22:04 Use of foreign objects to wrap anything other than an integer divoplade
@ 2020-05-25 22:10 ` divoplade
0 siblings, 0 replies; 2+ messages in thread
From: divoplade @ 2020-05-25 22:10 UTC (permalink / raw)
To: guile-user
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
>
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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