From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: 103376,9e7db243dfa070d7
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,UTF8
Path: 
 g2news2.google.com!news3.google.com!proxad.net!feeder1-2.proxad.net!usenet-fr.net!gegeweb.org!aioe.org!not-for-mail
From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
 =?utf-8?Q?=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: Do people who use Ada also use ocaml or F#?
Date: Sat, 30 Oct 2010 21:12:36 +0200
Organization: Ada @ Home
Message-ID: <op.vlekzab8ule2fv@garhos>
References: 
 <b17dc7a8-7f8e-46b7-942c-b08ba83ce8fa@j25g2000yqa.googlegroups.com>
 <gt9eaeq2y4pc$.11t5wghh3e8jh$.dlg@40tude.net>
 <87k4kz3mda.fsf@mid.deneb.enyo.de>
 <amlrr4wam4x6.10s9ynz9e8br$.dlg@40tude.net>
NNTP-Posting-Host: gHYtk+mhCrTAX6LNXybaBQ.user.speranza.aioe.org
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes
Content-Transfer-Encoding: Quoted-Printable
X-Complaints-To: abuse@aioe.org
X-Notice: Filtered by postfilter v. 0.8.2
User-Agent: Opera Mail/10.63 (Win32)
Xref: g2news2.google.com comp.lang.ada:15953
Date: 2010-10-30T21:12:36+02:00
List-Id: <comp.lang.ada>

Le Sat, 30 Oct 2010 14:59:47 +0200, Dmitry A. Kazakov  =

<mailbox@dmitry-kazakov.de> a =C3=A9crit:
> To me it is obvious that a type system serves reuse. The property of  =

> being
> static is aimed at correctness checks/proofs. In this context generics=
  =

> look
> quite disappointing.
I do not see how this could be less safe than a design process itself.  =

Generics are like building something with a pattern, and this pattern is=
  =

checked for consistency in Ada. This is not more not less safe than any =
 =

other composition process. I agree with Chad when he/she talked about th=
e  =

need of a validation for each instantiations (at least, by parameter set=
).  =

Static type system also apply with generic, this is just that it cannot =
be  =

proved universally valid. Even static type checking cannot guarantee to =
 =

always produce something correct, this goal needs more (like contracts).=


Still true generics can be no fun when (as an example) instantiation  =

hierarchy comes, but this is another story which has nothing to do with =
 =

proof of correctness.

-- =

Si les chats miaulent et font autant de vocalises bizarres, c=E2=80=99es=
t pas pour  =

les chiens.