From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: 'Protected' abstract subprograms
Date: Wed, 15 Jan 2014 16:21:57 -0500
Date: 2014-01-15T16:21:57-05:00 [thread overview]
Message-ID: <wcc38kpgcui.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: ea1e456e-0851-4df3-b06d-524dae3d0459@googlegroups.com
adambeneschan@gmail.com writes:
> Or it could just mean that Ada didn't provide a complete enough way
> for generics to put conditions on the actual parameters.You can say
> "type T is private;", in which case the actual must be nonlimited; or
> you can say "type T is limited private;", in which case the actual may
> be limited or nonlimited. But you don't have a way to say "the actual
> must be limited", which is what would be needed here.
Yes, that approach could work, but there are dozens of these "generic
private part" rules in the RM, and I suspect they all break privacy.
>...(And similarly
> for "tagged"; generics don't have a way to say "the actual must be
> untagged", and it seems that I submitted an AI in the last year or two
> about a case where using a tagged type as an actual for a generic
> formal private type led to a language hole involving derived types.)
- Bob
next prev parent reply other threads:[~2014-01-15 21:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 22:00 'Protected' abstract subprograms sbelmont700
2014-01-10 22:30 ` Randy Brukardt
2014-01-11 16:12 ` sbelmont700
2014-01-14 3:45 ` Randy Brukardt
2014-01-14 9:05 ` Dmitry A. Kazakov
2014-01-15 0:36 ` Randy Brukardt
2014-01-15 9:17 ` Dmitry A. Kazakov
2014-01-15 14:11 ` Robert A Duff
2014-01-15 15:40 ` adambeneschan
2014-01-15 21:21 ` Robert A Duff [this message]
2014-01-15 23:10 ` Randy Brukardt
2014-01-16 0:51 ` Robert A Duff
2014-01-16 10:43 ` AdaMagica
2014-01-16 16:32 ` adambeneschan
2014-01-17 1:49 ` Robert A Duff
2014-01-17 23:23 ` Randy Brukardt
2014-01-19 21:07 ` Robert A Duff
2014-01-20 8:40 ` Dmitry A. Kazakov
2014-01-21 14:37 ` Robert A Duff
2014-01-22 8:27 ` Dmitry A. Kazakov
2014-01-21 1:21 ` Randy Brukardt
2014-01-21 14:35 ` Robert A Duff
2014-01-15 23:17 ` Randy Brukardt
2014-01-16 8:52 ` Dmitry A. Kazakov
2014-01-11 8:41 ` J-P. Rosen
2014-01-11 8:59 ` Dmitry A. Kazakov
2014-01-11 13:42 ` Niklas Holsti
2014-01-11 19:35 ` Dmitry A. Kazakov
2014-01-12 9:19 ` Niklas Holsti
2014-01-12 10:22 ` Dmitry A. Kazakov
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox