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Date: Fri, 27 Apr 2012 11:46:24 +0200
From: Georg Bauhaus <rm.dash-bauhaus@futureapps.de>
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Subject: Re: What would you like in Ada202X?
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Date: 2012-04-27T11:46:24+02:00
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On 27.04.12 10:19, Dmitry A. Kazakov wrote:
> On Fri, 27 Apr 2012 10:09:31 +0200, Georg Bauhaus wrote:
> 
>> On 27.04.12 04:38, ytomino wrote:
>>
>>> And, some languages such as C# has tackled the problem that a base-class
>>> is changed independently of derived-classes.
>>
>> Implying, maybe, that inheritance of classes may not be the
>> best way to write reusable modules?
> 
> and the best way is?

Starting from at least one important distinction:

- is-a inheritance used where
- has-a should have been used.

then, not answering by giving "the best", or even "an optimal" way,
not even saying that interfaces have no uses,
just pointing out that all O-O language seem to have, after
some time, discovered that systems get "better" when they
use call-back style objects, or delegate objects (these
would then implement a interface).

Another hint at a possibly non-best way is the STL.