From: olivier.dion--- via General Guile related discussions <guile-user@gnu.org>
To: Matt Wette <matt.wette@gmail.com>, Guile User <guile-user@gnu.org>
Subject: Re: no scm_foreign_object_p ?
Date: Sat, 23 Jan 2021 14:29:13 -0500 [thread overview]
Message-ID: <87zh0zfo52.fsf@clara> (raw)
In-Reply-To: <87f7e2c4-3a42-acdf-35cf-6920b6240444@gmail.com>
On Sat, 23 Jan 2021, Matt Wette <matt.wette@gmail.com> wrote:
> I started using foreign objects but want something akin to number?,
> string? etc.
> Is there something that works here?
> I was hoping to see scm_foreign_object_p(type, object).
The only thing I see in the manual is `scm_assert_foreign_object_type`.
For something equivalent in scheme, I guess you could do something like:
----------------------------------------------------------------------
(define (foreign? obj)
(not (or (number? obj)
(string? obj)
(null? obj)
;; and so on..
)))
----------------------------------------------------------------------
I agree that such predicate should be part of the buitlin API.
--
Olivier Dion
PolyMtl
next prev parent reply other threads:[~2021-01-23 19:29 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-23 18:58 no scm_foreign_object_p ? Matt Wette
2021-01-23 19:29 ` olivier.dion--- via General Guile related discussions [this message]
2021-01-23 20:04 ` divoplade
2021-01-23 20:52 ` Matt Wette
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