From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Performance of records with variant parts
Date: Mon, 22 Mar 2021 18:32:37 +0100 [thread overview]
Message-ID: <s3akbl$dg3$1@dont-email.me> (raw)
In-Reply-To: <07a56dcc-9e17-49b2-a980-3a5a2d265cedn@googlegroups.com>
On 3/22/21 6:02 PM, John Perry wrote:
>
> | case obj.kind is
> | when Sphere =>
> | -- do stuff
> | when Plane =>
> | -- do other stuff
> | when None =>
> | null;
> | end case;
>
> Is there a reason that the record with variant parts runs so much slower? I can make the complete source available if need be.
1. Why is Surface a discriminant?
2. What are the quantitative timing requirements for the program? Does the
difference affect whether or not they are met?
3. What is the declaration of Obj?
--
Jeff Carter
"One day he told me he was a gynecologist. He
couldn't speak no foreign languages."
Take the Money and Run
147
next prev parent reply other threads:[~2021-03-22 17:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 17:02 Performance of records with variant parts John Perry
2021-03-22 17:32 ` Jeffrey R. Carter [this message]
2021-03-22 17:49 ` John Perry
2021-03-22 17:54 ` John Perry
2021-03-22 19:31 ` Jeffrey R. Carter
2021-03-22 22:11 ` John Perry
2021-03-23 9:31 ` Jeffrey R. Carter
2021-03-23 14:27 ` Simon Wright
2021-03-23 23:00 ` John Perry
2021-03-23 23:27 ` Jeffrey R. Carter
2021-03-26 15:38 ` Stephen Leake
2021-03-26 15:44 ` John Perry
2021-03-30 7:12 ` Emmanuel Briot
2021-04-01 0:03 ` John Perry
2021-04-01 6:45 ` Emmanuel Briot
2021-04-01 13:38 ` Niklas Holsti
2021-04-02 16:07 ` John Perry
2021-03-22 17:39 ` Dmitry A. Kazakov
2021-03-22 17:45 ` John Perry
2021-03-22 18:07 ` Dmitry A. Kazakov
2021-03-22 18:23 ` John Perry
2021-03-22 20:30 ` Dmitry A. Kazakov
2021-03-22 18:59 ` Niklas Holsti
2021-03-22 21:54 ` John Perry
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox