From: Stephen Compall <stephen.compall@gmail.com>
To: "Aleix Conchillo Flaqué" <aconchillo@gmail.com>
Cc: guile-user <guile-user@gnu.org>
Subject: Re: syntax-case guards
Date: Sun, 3 Feb 2013 19:52:09 -0500 [thread overview]
Message-ID: <CACs3V9XOXW8uzphWZSkGdvd912qzUqYj7heuU-R6Xn8M1RmRcw@mail.gmail.com> (raw)
In-Reply-To: <CA+XASoXBELxXxy=Br9cAjmoVra5Q4rdb4v5LafCwK4g=RQpWAg@mail.gmail.com>
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On Feb 3, 2013 6:56 PM, "Aleix Conchillo Flaqué" <aconchillo@gmail.com>
wrote:
> So I have something like,
>
> ((_ (struct (k v) ...))
> (string? (syntax->datum #'k))
> exp)
>
> And I want k to be a string. However, I am getting this error:
>
> missing ellipsis in form (syntax k)
The error is correct; k lives in single-ellipsis world. What should k mean
to syntax->datum? The first k? The last k?
Try changing #'k to #'(k ...), and adjusting the guard to deal with list of
k, such as you will get, instead of just k.
--
Stephen Compall
If anyone in the MSA is online, you should watch this flythrough.
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next prev parent reply other threads:[~2013-02-04 0:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-03 23:56 syntax-case guards Aleix Conchillo Flaqué
2013-02-04 0:52 ` Stephen Compall [this message]
2013-02-04 1:14 ` Ian Price
2013-02-04 5:19 ` Aleix Conchillo Flaqué
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