From: Maxime Devos <maximedevos@telenet.be>
To: adriano <randomlooser@riseup.net>, guile-user <guile-user@gnu.org>
Subject: Re: foreign objects and the garbage collector
Date: Tue, 21 Sep 2021 20:49:55 +0200 [thread overview]
Message-ID: <c453c4588c0100258c88bae3c6356ada2ad57649.camel@telenet.be> (raw)
In-Reply-To: <521d6bea5b77a644e2e9efe16e35cc2d0c53775c.camel@riseup.net>
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adriano schreef op di 21-09-2021 om 16:26 [+0200]:
>
> [...]
> Well, it'd be wonderful to have an example of what you're describing
> here ! 🙂️
>
> The new exceptions system is still quite obscure 🤷️
Ignoring with-throw-handler, raise-continuable and pre-unwind handlers, it's
the same mechanism as in Java or Python, though with different syntax, and
unlike Java, Guile doesn't have ‘finally’:
;; Can also be implemented with the old 'catch' -- 'catch' isn't disappearing.
(guard (c (#t (close-resource-unless-closed the-resource)
(raise-exception c)))
(define-values return-values (do-stuff))
(close-the-resource-unless-closed the-resource)
(apply values return-vales))
Greetings,
Maxime
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next prev parent reply other threads:[~2021-09-21 18:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-04 12:41 foreign objects and the garbage collector Tim Meehan
2021-09-04 13:35 ` Vivien Kraus via General Guile related discussions
2021-09-05 0:58 ` Tim Meehan
2021-09-19 6:14 ` adriano
2021-09-19 18:11 ` Olivier Dion via General Guile related discussions
2021-09-19 18:23 ` Maxime Devos
2021-09-21 14:26 ` adriano
2021-09-21 18:49 ` Maxime Devos [this message]
2021-09-21 14:00 ` adriano
2021-09-21 14:25 ` Olivier Dion via General Guile related discussions
2021-09-21 14:51 ` adriano
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