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From: "Björn Lundin" <b.f.lundin@gmail.com>
Subject: Re: Ada design bug or GNAT bug?
Date: Sat, 04 Jul 2015 14:00:57 +0200
Date: 2015-07-04T14:00:57+02:00	[thread overview]
Message-ID: <mn8hok$fdf$1@dont-email.me> (raw)
In-Reply-To: <lyy4iwxt4m.fsf@pushface.org>

On 2015-07-04 09:46, Simon Wright wrote:
> Shark8 <onewingedshark@gmail.com> writes:
> 
>> Also, I seem to recall your dislike of INTERFACEs -- in hindsight,
>> what would you have done differently if you needed the mechanism of
>> "Type T has functions X, Y, and X" applied to a group of types?
>> Generics, or some variations thereof?
> 
> Generic signature packages?
> 

I had this problem when implementing another companies proprietary
communications protocol, that we needed to communicate with.
The physical devices were picking-robots.
All messages had a common headers and then message specific fields.
And they had to have certain functions. To_String, Save_to_Database,
Send, etc.

Since I had complete control over the implementation, I
ended up using inheritance from an abstract type.

Some functions of the abstract type were implemented,
and others - to specialized for the inherited type -
was declared abstract.


--
Björn


  reply	other threads:[~2015-07-04 12:00 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-20 18:55 Ada design bug or GNAT bug? Dmitry A. Kazakov
2015-06-21  2:42 ` Randy Brukardt
2015-06-21  6:47   ` Dmitry A. Kazakov
2015-06-22 17:39     ` Randy Brukardt
2015-06-22 18:16       ` Dmitry A. Kazakov
2015-06-23 11:00         ` G.B.
2015-06-23 14:27           ` Dmitry A. Kazakov
2015-06-23 11:45         ` G.B.
2015-06-23 14:30           ` Dmitry A. Kazakov
2015-07-02 22:22         ` Randy Brukardt
2015-07-03  8:02           ` Dmitry A. Kazakov
2015-07-03 17:33             ` Randy Brukardt
2015-07-03 21:34               ` Dmitry A. Kazakov
2015-07-04  3:11                 ` Randy Brukardt
2015-07-04 12:14                   ` Dmitry A. Kazakov
2015-07-05  0:53                     ` Randy Brukardt
2015-06-22 18:27       ` Shark8
2015-06-23 11:51         ` vincent.diemunsch
2015-06-23 19:55           ` Shark8
2015-06-23 13:06         ` vincent.diemunsch
2015-06-23 14:30           ` David Botton
2015-06-23 15:57             ` Niklas Holsti
2015-06-23 16:01               ` G.B.
2015-06-23 18:05               ` David Botton
2015-06-23 19:38               ` David Botton
2015-06-23 14:38           ` Dmitry A. Kazakov
2015-06-23 16:57             ` Vincent
2015-06-23 17:15               ` Dmitry A. Kazakov
2015-06-23 19:14                 ` vincent.diemunsch
2015-06-23 19:33                   ` Dmitry A. Kazakov
2015-06-23 17:42           ` Jeffrey R. Carter
2015-07-02 22:06           ` Randy Brukardt
2015-07-04  1:52             ` Shark8
2015-07-04  3:24               ` Randy Brukardt
2015-07-04 11:02                 ` Build-in-place semantics? (Was: Ada design bug or GNAT bug?) Jacob Sparre Andersen
2015-07-04 12:15                   ` Dmitry A. Kazakov
2015-07-05  0:45                     ` Randy Brukardt
2015-07-05  7:10                       ` Dmitry A. Kazakov
2015-07-05  0:40                   ` Randy Brukardt
2015-07-04 14:05                 ` Ada design bug or GNAT bug? Bob Duff
2015-07-04  7:46               ` Simon Wright
2015-07-04 12:00                 ` Björn Lundin [this message]
2015-07-05  0:48                   ` Randy Brukardt
2015-07-06 12:37             ` Vincent
2015-07-06 20:05               ` Randy Brukardt
2015-07-07  8:06               ` Dmitry A. Kazakov
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