From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Type invariants and private extensions?
Date: Tue, 12 Sep 2017 21:56:39 +0200
Date: 2017-09-12T21:56:39+02:00 [thread overview]
Message-ID: <op9e5n$qa2$1@dont-email.me> (raw)
In-Reply-To: <op9age$16lr$1@gioia.aioe.org>
On 09/12/2017 08:54 PM, Victor Porton wrote:
>
> A SPARQL query may return boolean, graph, bindings, etc. The return type is
> determined by the text of the query.
>
> I want to make derived types of a query which are validated that their
> return is of a certain type (e.g. a boolean). This certainly useful in a
> language like Ada intended for reliability and maximum runtime check during
> debugging.
"I want to" is not the same as "there is no way to solve the problem in current
Ada". Ada has a feature that provides exactly what you need. It's called a
variant record.
--
Jeff Carter
"Why don't you bore a hole in yourself and let the sap run out?"
Horse Feathers
49
next prev parent reply other threads:[~2017-09-12 19:56 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-11 19:51 Type invariants and private extensions? Victor Porton
2017-09-11 20:00 ` Egil H H
2017-09-11 20:48 ` Victor Porton
2017-09-11 21:19 ` Egil H H
2017-09-11 21:27 ` Victor Porton
2017-09-11 21:49 ` Egil H H
2017-09-11 22:00 ` Victor Porton
2017-09-11 22:06 ` Egil H H
2017-09-12 7:30 ` Dmitry A. Kazakov
2017-09-11 22:00 ` Jere
2017-09-11 22:02 ` Victor Porton
2017-09-12 18:26 ` Jeffrey R. Carter
2017-09-12 18:54 ` Victor Porton
2017-09-12 19:56 ` Jeffrey R. Carter [this message]
2017-09-12 20:08 ` Victor Porton
2017-09-12 22:34 ` Shark8
2017-09-12 22:59 ` Victor Porton
2017-09-13 4:21 ` Jere
2017-09-13 4:28 ` Jere
2017-09-13 4:34 ` Jere
2017-09-14 13:52 ` Victor Porton
2017-09-15 0:48 ` Jere
2017-09-16 14:22 ` Victor Porton
2017-09-14 7:28 ` Shark8
2017-09-14 13:56 ` Victor Porton
2017-09-14 13:58 ` Victor Porton
2017-09-11 22:48 ` Shark8
2017-10-02 23:16 ` Randy Brukardt
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