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From: Darkwing <nelsonchandler@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Question: dynamic rename?
Date: Sat, 3 Sep 2011 20:11:30 -0700 (PDT)
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On Sep 3, 6:22=A0am, Pascal Obry <pas...@obry.net> wrote:
> Le 03/09/2011 14:27, ytomino a =E9crit :
>
>
> Or using a case expression in Ada 2012:
>
> =A0 =A0 Signal : Signal_Type :=3D
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0(case Configuration is
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0when One =3D> Signal_One,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0when Two =3D> Signal_Two);

You can really do that in Ada 2012? (I've never used 2012, just 95).

That's pretty cool. Any word on when 2012 will be finalized?

> function signal_ref return access signal_type is
> begin
>     case configuration is
>        when one =3D>  return signal_one'Access;
>        when two =3D>  return signal_two'Access;
>     end case;
> end signal_ref;

This is what I'll have to use. Well, actually just the value since I'm
only reading and not writing. Also, I don't think I have have access
to the 'access because the variables in question aren't aliased (I
don't believe they are aliasable either).