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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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Newsgroups: comp.lang.ada
Subject: Re: Seeking for papers about tagged types vs access to subprograms
Date: Sat, 11 May 2013 09:32:32 +0200
Organization: Ada @ Home
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Date: 2013-05-11T09:32:32+02:00
List-Id: <comp.lang.ada>

Le Sat, 11 May 2013 02:42:37 +0200, Randy Brukardt <randy@rrsoftware.com=
>  =

a =C3=A9crit:
>> Not at all. It is substitutability which is context-depended ...
>
> Bow down to the great god of "substitutability". The real crux of
> OOP-madness -- this is fantasy that does not exist in real problems.

As often, depends on the use case and domain (with proofs and analysis, =
 =

substitutability is important).

Was just thinking about something to please both: don't see  =

substitutability as a requirement, but as something optionally provided;=
  =

there could be a way to assert substitutability when something can provi=
de  =

it, while not requiring it all the time. That would be a kind of  =

noticeable property which could be explicitly created and asserted.

There are people who need it, there are others who really don't care.

-- =

=E2=80=9CSyntactic sugar causes cancer of the semi-colons.=E2=80=9D [1]
=E2=80=9CStructured Programming supports the law of the excluded muddle.=
=E2=80=9D [1]
[1]: Epigrams on Programming =E2=80=94 Alan J. =E2=80=94 P. Yale Univers=
ity