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=unavailable autolearn_force=no version=3.4.4
X-Received: by 2002:a24:534b:: with SMTP id
 n72-v6mr5637344itb.11.1529422666280;
        Tue, 19 Jun 2018 08:37:46 -0700 (PDT)
X-Received: by 2002:aca:a883:: with SMTP id
 r125-v6mr709884oie.7.1529422666170;
 Tue, 19 Jun 2018 08:37:46 -0700 (PDT)
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!news.uzoreto.com!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!d7-v6no148608itj.0!news-out.google.com!c20-v6ni61itc.0!nntp.google.com!d7-v6no148605itj.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Tue, 19 Jun 2018 08:37:45 -0700 (PDT)
In-Reply-To: <pgabo1$k89$1@dont-email.me>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=76.113.16.86;
 posting-account=lJ3JNwoAAAAQfH3VV9vttJLkThaxtTfC
NNTP-Posting-Host: 76.113.16.86
References: <5e86db65-84b9-4b5b-9aea-427a658b5ae7@googlegroups.com>
 <878t7u1cfm.fsf@nightsong.com>
 <c22391d4-94b6-4ed3-96c0-1e9a84c4a99c@googlegroups.com>
 <b1141508-e692-46f6-b536-4a72081dfb45@googlegroups.com>
 <foqeocF7l4fU1@mid.individual.net>
 <pg949k$jmv$1@dont-email.me> <foqjvhF8kskU1@mid.individual.net>
 <776f3645-ed0c-4118-9b4d-21660e3bba4b@googlegroups.com>
 <pgabo1$k89$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <6cae3e50-7f14-4839-b7cb-bd82cf11cbda@googlegroups.com>
Subject: Re: Ada Successor Language
From: Shark8 <onewingedshark@gmail.com>
Injection-Date: Tue, 19 Jun 2018 15:37:46 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Xref: reader02.eternal-september.org comp.lang.ada:53164
Date: 2018-06-19T08:37:45-07:00
List-Id: <comp.lang.ada>

On Tuesday, June 19, 2018 at 1:35:30 AM UTC-6, G. B. wrote:
> Shark8 wrote:
>=20
> > I'd honestly like the ability to use X'Type; this would allow us to say
> > something like this:
> >=20
> > Procedure Swap( A, B : in out Some_Type ) is
> >   Temp : Constant B'Type :=3D B;
> > Begin
> >   B:=3D A;
> >   A:=3D Temp;
> > End Swap;
> >=20
> > Yeah, I know, it's a little thing and you can do it with generics, etc.
> > But that's not entirely the point, the point is that this allows the
> > declaration of types dependent on objects... it provides some of the
> > niceties of type-inference without having to resort to such
> > lazy/possibly-error-prone methodologies.
> >=20
>=20
> What is the =E2=80=98Size of B=E2=80=99Type?

In the given case?
Since B'Type is Some_Type, B'Type'Size is exactly Some_Type'Size.