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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: Wed, 08 May 2013 09:59:18 +0200
Organization: Ada @ Home
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Date: 2013-05-08T09:59:18+02:00
List-Id: <comp.lang.ada>

Le Wed, 08 May 2013 09:38:03 +0200, Dmitry A. Kazakov  =

<mailbox@dmitry-kazakov.de> a =C3=A9crit:

> On Tue, 7 May 2013 15:35:01 -0500, Jacob Sparre Andersen news wrote:
>
>> The main thing is that
>> the result most certainly would not be Ada, but rather would be a new=

>> language *inspired by* Ada.
>
> No, that was the path taken by Ada 2005 and Ada 2012. Patches are
> destroying the language fabric.
>
> What I wish is to change the language foundation while keeping the
> semantics of existing types intact. The whole idea is to move them ont=
o  =

> the library level rather than changing anything in them.

Eiffel had this; all types were at what would have been library level fo=
r  =

Eiffel. But it was too  much lacking expressiveness in defining numeric =
 =

types (ex. you could not cleanly specify ranges).


-- =

=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