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=-1.1 required=5.0 tests=BAYES_00,
	PP_MIME_FAKE_ASCII_TEXT autolearn=no autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!gegeweb.org!news.ecp.fr!news.jacob-sparre.dk!loke.jacob-sparre.dk!pnx.dk!.POSTED!not-for-mail
From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Quick question regarding limited type return syntax
Date: Fri, 1 Aug 2014 14:23:43 -0500
Organization: Jacob Sparre Andersen Research & Innovation
Message-ID: <lrgpg1$40g$1@loke.gir.dk>
References: <166aaec5-5e9c-40e0-9b07-9b9c7d5f7f33@googlegroups.com>
 <EngCv.101926$Ji3.44609@fx16.iad>
 <16a6846f-2964-438a-ab9b-2029075f7924@googlegroups.com>
 <bf9193d6-e1a8-4df3-8e36-b07a2b07655e@googlegroups.com>
 <lret2q$fs$1@loke.gir.dk> <lrfh8k$rpi$1@dont-email.me>
NNTP-Posting-Host: static-69-95-181-76.mad.choiceone.net
X-Trace: loke.gir.dk 1406921026 4112 69.95.181.76 (1 Aug 2014 19:23:46 GMT)
X-Complaints-To: news@jacob-sparre.dk
NNTP-Posting-Date: Fri, 1 Aug 2014 19:23:46 +0000 (UTC)
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2900.5931
X-RFC2646: Format=Flowed; Original
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157
Xref: news.eternal-september.org comp.lang.ada:21378
Date: 2014-08-01T14:23:43-05:00
List-Id: <comp.lang.ada>

"J-P. Rosen" <rosen@adalog.fr> wrote in message 
news:lrfh8k$rpi$1@dont-email.me...
> Le 01/08/2014 04:12, Randy Brukardt a écrit :
>> t's annoying that we couldn't get this "explicit default-initialization"
>> syntax more widely used. I prefer to ensure that everything is properly
>> initialized, but sometimes the default value is good enough. It would be
>> nice to be able to specify that:
>>
>>       Obj : My_Type := <>;
>> or maybe
>>       Obj : My_Type := (<>);
>>
>> so that I could verify that every object is either initialized or 
>> explicitly
>> left default initialized.
>
> One of my clients has a rule that every user-defined type must provide
> an associated constant for the default value (and of course, AdaControl
> can enforce that rule). Then it is enough to say that every variable
> must be initialized.
>
> Seems close enough to what you want...

Not quite, since

    Default_Frobnitz : constant Frobnitz_Type;

is illegal. You could write:


    Junk_Frobnitz : Frobnitz_Type; -- To get this default-initialized.
    Default_Frobnitz : constant Frobnitz_Type := Junk_Frobnitz;

but that's awful.

                                         Randy.