From: "J-P. Rosen" <rosen@adalog.fr>
Subject: Re: Simple example on interfaces
Date: Tue, 26 Jan 2021 10:37:12 +0100 [thread overview]
Message-ID: <ruons9$ugr$1@dont-email.me> (raw)
In-Reply-To: <runfcf$1uub$1@gioia.aioe.org>
Le 25/01/2021 à 23:06, Dmitry A. Kazakov a écrit :
> Ada interface is a type that has interface and no implementation. [It is
> a silly idea inherited from Java.]
>
To make it look a little less silly, think of it as a promise: a type
that implements an interface promises to provide a certain number of
operations.
Then you can define algorithms that work on any type that fulfills the
promises.
To me, the big benefit of interfaces is that it is NOT inheritance; you
say that your type provides some operations, without needing to classify
it with an is-a relationship.
(I can hear screamings of pure-OO people who will not agree with me ;-) )
--
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr
next prev parent reply other threads:[~2021-01-26 9:37 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 [this message]
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
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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