From: AdaMagica <christ-usch.grein@t-online.de>
Subject: Re: Simple example on interfaces
Date: Tue, 26 Jan 2021 08:46:05 -0800 (PST) [thread overview]
Message-ID: <6e343937-3590-4944-8c38-10b61014e128n@googlegroups.com> (raw)
In-Reply-To: <ruovre$1sid$1@gioia.aioe.org>
Dmitry A. Kazakov schrieb am Dienstag, 26. Januar 2021 um 12:53:25 UTC+1:
> The problem with generics (static polymorphism which also includes
> overloading) is that they answer no to the last question. There cannot
> be same program because there is no class-wide (polymorphic) objects
> from the generics' class.
universal_integer being something like class of all integers, this would be:
generic
type T is range <>;
procedure F (X: T);
is replaced by the classwide
procedure F (X: universal_integer); -- not Ada
universal_integer is anonymous and doesn't have any operations (except automatic conversion).
> P.S. Comparing generics to overloading, generics offer some re-use, and
> some degree of formalization at the cost of producing huge mess, while
> overloading does none.
I know you don't like generics. I do not see a huge mess.
next prev parent reply other threads:[~2021-01-26 16:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-25 16:08 Simple example on interfaces Mario Blunk
2021-01-25 16:41 ` Dmitry A. Kazakov
2021-01-25 17:51 ` Mario Blunk
2021-01-25 22:06 ` Dmitry A. Kazakov
2021-01-26 7:33 ` G.B.
2021-01-26 8:07 ` Dmitry A. Kazakov
2021-01-26 8:17 ` Mario Blunk
2021-01-26 8:55 ` Dmitry A. Kazakov
2021-01-26 9:37 ` J-P. Rosen
2021-01-26 10:25 ` Dmitry A. Kazakov
2021-01-26 11:15 ` AdaMagica
2021-01-26 11:53 ` Dmitry A. Kazakov
2021-01-26 16:46 ` AdaMagica [this message]
2021-01-26 19:44 ` Dmitry A. Kazakov
2021-01-26 20:04 ` Shark8
2021-01-26 21:34 ` Dmitry A. Kazakov
2021-01-27 3:11 ` Randy Brukardt
2021-01-27 22:51 ` Shark8
2021-01-30 8:33 ` Randy Brukardt
2021-01-27 3:09 ` Randy Brukardt
2021-01-27 8:05 ` Dmitry A. Kazakov
2021-01-26 10:02 ` Stephen Leake
2021-01-25 17:00 ` Jeffrey R. Carter
2021-01-27 1:48 ` philip...@gmail.com
2021-01-27 8:06 ` Dmitry A. Kazakov
2021-01-27 3:36 ` Randy Brukardt
2021-01-27 23:04 ` Shark8
2021-01-25 19:05 ` Stephen Leake
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