From: John English <je@brighton.ac.uk>
Subject: Re: Re: Style: always declare subrountines?
Date: Thu, 28 Nov 2002 10:32:27 +0000
Date: 2002-11-28T10:31:45+00:00 [thread overview]
Message-ID: <3DE5F0BB.E7D21384@brighton.ac.uk> (raw)
In-Reply-To: 3DD847CD.A3D78EE9@adaworks.com
Richard Riehle wrote:
> My own own preference for internal subprograms that have no
> entry in the specification to promote them to a private package
> specification. This promotes reuse, enhances maintenance, and
> allows extensibility. For example, consider: [...snip...]
One thing that always bugs me is that private packages can only be
accessed from the body of a public package. What would be nice to
be able to do sometimes is:
with P.Implementation;
package P.Public is
type T is private;
...
private
type T is
record
X : P.Implementation.Stuff;
end record;
end P.Public;
Unfortunately P.Implementation can't be a private package here. (I
seem to remember someone saying that there was an AI that addressed
this problem; can anyone point me at it if this is true?)
Another gripe: it would sometimes be nice to be able to say "type T
renames P.Implementation.Stuff", but the standard trick of using a
subtype to rename doesn't work because T is declared as a type, not
a subtype. Grrr!
-----------------------------------------------------------------
John English | mailto:je@brighton.ac.uk
Senior Lecturer | http://www.it.bton.ac.uk/staff/je
Dept. of Computing | ** NON-PROFIT CD FOR CS STUDENTS **
University of Brighton | -- see http://burks.bton.ac.uk
-----------------------------------------------------------------
next prev parent reply other threads:[~2002-11-28 10:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-09 6:39 Style: always declare subrountines? Victor Porton
2002-11-09 11:09 ` sk
2002-11-09 12:34 ` Victor Porton
2002-11-09 14:34 ` Jim Rogers
2002-11-09 14:53 ` sk
2002-11-09 15:36 ` Robert A Duff
2002-11-09 16:16 ` Frank J. Lhota
2002-11-09 16:28 ` chris.danx
2002-11-09 18:36 ` Simon Wright
2002-11-12 17:31 ` Stephen Leake
2002-11-18 1:52 ` ;Re: " Richard Riehle
2002-11-28 10:32 ` John English [this message]
2002-11-28 12:52 ` Lutz Donnerhacke
2002-12-03 11:15 ` John English
2002-12-03 12:22 ` Lutz Donnerhacke
2002-12-03 13:11 ` John English
2002-12-03 14:31 ` Robert A Duff
2002-12-03 14:41 ` Lutz Donnerhacke
2002-11-28 17:49 ` Vincent Marciante
2002-12-03 11:09 ` John English
2002-11-28 18:45 ` "private with" proposal Vincent Marciante
2002-11-28 20:12 ` David C. Hoos, Sr.
2002-11-29 4:28 ` Vincent Marciante
2002-12-01 1:00 ` Dale Stanbrough
2002-12-02 18:20 ` Stephen Leake
2002-12-03 5:37 ` Vincent Marciante
2002-12-03 19:24 ` Randy Brukardt
2002-12-04 3:52 ` Vincent Marciante
-- strict thread matches above, loose matches on Subject: below --
2002-11-28 11:50 Re: Style: always declare subrountines? Grein, Christoph
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