From: Matthew Heaney <matthew_heaney@acm.org>
Subject: Re: Why both "with" and "use"?
Date: 1999/02/14
Date: 1999-02-14T00:00:00+00:00 [thread overview]
Message-ID: <m3aeyhu4ux.fsf@mheaney.ni.net> (raw)
In-Reply-To: 36c60d14.12851112@news.pacbell.net
tmoran@bix.com (Tom Moran) writes:
> alternatively, you could do
> package Digitizers is
> type ID is range 1 .. 2;
> ...
> end Digitizers;
> with Digitizers;
> ...
> Digitizer : Digitizers.ID;
> which would leave out the Use clause, let the compiler help make sure
> the naming is right, and let the maintainer or simple minded source
> code tool easily spot the origin of Digitizers.ID.
This won't work, because you need the types to be separate from the
Digitizers package. The organization looks something like this:
with Digitizer_Id_Types; use Digitizer_Id_Types;
package Digitizers is
procedure Set_Mode (Id : in Digitizer_Id);
...
end Digitizers;
There are clients of Digitizer_Id who are not clients of Digitizers, and
they have to be protected from the volatility of the Digitizers package,
or you end up recompiling the universe every day.
next prev parent reply other threads:[~1999-02-14 0:00 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-13 0:00 Why both "with" and "use"? Mike Silva
1999-02-13 0:00 ` Corey Minyard
1999-02-13 0:00 ` mike
1999-02-13 0:00 ` Matthew Heaney
1999-02-13 0:00 ` bill
1999-02-14 0:00 ` dewar
1999-02-14 0:00 ` Matthew Heaney
1999-02-14 0:00 ` dewar
1999-02-13 0:00 ` Tom Moran
1999-02-14 0:00 ` Matthew Heaney [this message]
1999-02-16 0:00 ` Samuel Mize
1999-02-17 0:00 ` dennison
1999-02-17 0:00 ` Nick Roberts
1999-02-17 0:00 ` Samuel Mize
1999-02-17 0:00 ` Jean-Pierre Rosen
1999-02-17 0:00 ` Matthew Heaney
1999-02-17 0:00 ` Jean-Pierre Rosen
1999-02-18 0:00 ` dennison
1999-02-18 0:00 ` robert_dewar
1999-02-19 0:00 ` bourguet
1999-02-19 0:00 ` robert_dewar
1999-02-19 0:00 ` dennison
1999-02-19 0:00 ` Robert I. Eachus
1999-02-19 0:00 ` Brian Hanson
1999-02-19 0:00 ` robert_dewar
1999-02-19 0:00 ` robert_dewar
1999-02-23 0:00 ` Robert I. Eachus
1999-02-19 0:00 ` Matthew Heaney
1999-02-19 0:00 ` dennison
1999-02-19 0:00 ` robert_dewar
1999-02-19 0:00 ` Ada multiple string personalities. why so many? mike
1999-02-19 0:00 ` Tom Moran
1999-02-19 0:00 ` Mike Silva
1999-02-22 0:00 ` Brian Hanson
1999-02-19 0:00 ` robert_dewar
1999-02-19 0:00 ` Why both "with" and "use"? dennison
1999-02-19 0:00 ` robert_dewar
1999-02-18 0:00 ` robert_dewar
1999-02-18 0:00 ` Jean-Pierre Rosen
1999-02-18 0:00 ` robert_dewar
1999-02-19 0:00 ` Jean-Pierre Rosen
1999-02-13 0:00 ` Pat Rogers
1999-02-13 0:00 ` bill
1999-02-13 0:00 ` Pat Rogers
1999-02-13 0:00 ` Matthew Heaney
1999-02-13 0:00 ` bill
1999-02-14 0:00 ` Pat Rogers
1999-02-14 0:00 ` Bob Collins
1999-02-14 0:00 ` Pat Rogers
1999-02-16 0:00 ` Samuel Mize
1999-02-13 0:00 ` Matthew Heaney
1999-02-15 0:00 ` Jean-Pierre Rosen
1999-02-15 0:00 ` Ed Falis
1999-02-16 0:00 ` Jean-Pierre Rosen
1999-02-15 0:00 ` Jean-Pierre Rosen
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