From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Imitation is the sincerest form of flattery
Date: Sun, 23 Mar 2003 09:51:55 +0100
Date: 2003-03-23T09:51:55+01:00 [thread overview]
Message-ID: <b5jsfq$2972gm$1@ID-77047.news.dfncis.de> (raw)
In-Reply-To: ubs03lcdz.fsf@wanadoo.fr
Pascal Obry wrote:
> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
>
>> > But how do you access element into this array, what would be done
>> > for:
>> >
>> > M : Sparse_Matix (1 .. 7, 1 .. 90);
>> >
>> > M (2, 6) := ...;
>>
>> I have to prove an implementation for Set_Element, I suppose. When I
>> declare that Sparse_Matrix an array, I have to override all the abstract
>> methods of the universal array type might have. Set_Element is one of
>> them.
>
> You mean that the compiler must generate a call to Set_Element/Get_Element
> for every reference to an array item, right ?
Surely
> So what you are looking for is a type with runtime support, a bit like
> Ada.Finalization API with the Initialize/Adjust/Finalize routines, right ?
There cannot be other mechanism I suppose. An universal array has some
abstract primitive operations which has to be implemented. In case of
built-in arrays, the implementeation is generated by the compiler. For
user-defined ones, it is the programmer who implements them.
However, I am pretty aware that all unsolved problems with
assignment/construction in Ada will inevitable show themselves for
Set_Element.
--
Regards,
Dmitry A. Kazakov
www.dmitry-kazakov.de
next prev parent reply other threads:[~2003-03-23 8:51 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-14 17:22 Imitation is the sincerest form of flattery Robert C. Leif
2003-03-14 17:57 ` Warren W. Gay VE3WWG
2003-03-14 18:16 ` chris.danx
2003-03-14 18:17 ` Hyman Rosen
2003-03-15 14:18 ` Georg Bauhaus
2003-03-16 1:06 ` Hyman Rosen
2003-03-18 10:37 ` Georg Bauhaus
2003-03-18 15:34 ` Dmitry A. Kazakov
2003-03-19 11:12 ` Georg Bauhaus
2003-03-20 8:42 ` Dmitry A. Kazakov
2003-03-20 14:27 ` Frank J. Lhota
2003-03-21 8:44 ` Dmitry A. Kazakov
2003-03-21 17:16 ` Pascal Obry
2003-03-22 9:05 ` Dmitry A. Kazakov
2003-03-22 14:11 ` Pascal Obry
2003-03-22 23:12 ` AG
2003-03-23 9:01 ` Dmitry A. Kazakov
2003-03-23 8:51 ` Dmitry A. Kazakov [this message]
2003-03-24 16:52 ` Hyman Rosen
2003-03-24 18:10 ` Dmitry A. Kazakov
2003-03-24 18:33 ` Hyman Rosen
2003-03-25 5:04 ` Amir Yantimirov
2003-03-25 19:55 ` Dmitry A. Kazakov
2003-03-25 20:22 ` Hyman Rosen
2003-03-26 13:02 ` Dmitry A. Kazakov
2003-03-26 15:06 ` Hyman Rosen
2003-03-26 16:21 ` Dmitry A. Kazakov
2003-03-26 17:00 ` Hyman Rosen
2003-03-26 18:21 ` Bill Findlay
2003-03-26 18:40 ` Hyman Rosen
2003-03-22 10:01 ` Amir Yantimirov
2003-03-23 8:41 ` Dmitry A. Kazakov
2003-03-24 4:53 ` Amir Yantimirov
2003-03-24 18:10 ` Dmitry A. Kazakov
2003-03-25 5:48 ` Amir Yantimirov
2003-03-25 15:53 ` Frank J. Lhota
2003-03-25 16:44 ` Robert A Duff
2003-03-25 18:24 ` Frank J. Lhota
2003-03-25 20:06 ` Dmitry A. Kazakov
2003-03-27 19:45 ` Frank J. Lhota
2003-03-27 21:25 ` Pascal Obry
2003-03-28 13:34 ` Dmitry A. Kazakov
2003-04-01 14:38 ` Frank J. Lhota
2003-04-02 7:37 ` Dmitry A. Kazakov
2003-03-26 7:48 ` Amir Yantimirov
2003-03-26 13:35 ` Dmitry A. Kazakov
2003-03-26 7:32 ` Amir Yantimirov
2003-03-20 23:28 ` Matthew Heaney
2003-03-21 8:49 ` Dmitry A. Kazakov
2003-03-21 21:07 ` Georg Bauhaus
2003-03-22 9:04 ` Dmitry A. Kazakov
2003-03-22 10:05 ` AG
2003-03-22 15:25 ` Georg Bauhaus
2003-03-22 19:27 ` AG
2003-03-22 21:45 ` Vinzent Hoefler
2003-03-22 22:28 ` AG
2003-03-23 23:47 ` Robert A Duff
2003-03-28 16:34 ` Georg Bauhaus
2003-03-18 15:58 ` Hyman Rosen
2003-03-19 11:05 ` Georg Bauhaus
2003-03-23 11:31 ` Florian Weimer
2003-03-23 23:39 ` Hyman Rosen
2003-03-15 12:52 ` Florian Weimer
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