From: shaunpatterson@gmail.com
Subject: Pointers explained?
Date: Mon, 30 Jul 2007 10:53:16 -0700
Date: 2007-07-30T10:53:16-07:00 [thread overview]
Message-ID: <1185817996.233395.150610@i38g2000prf.googlegroups.com> (raw)
Hi
I'm still relatively new to Ada -- coming from a strong C++
background. Some of this may seem stupid - and feel free to point it
out to me. I am using Ada 95 - GNAT Pro 3.16a1
I have a message factory I've been screwing around with (converting it
from Ada to C++).
I basically have an abstract message type:
type Message is abstract tagged null record;
type Message_Class is access all Message'Class;
then all other messages are derived from this.
Now from my factory create method, I'm returning a Message_Class.
This message_class
is stored in another record to be handled again later:
type CallbackEvent is
record
msg : Message_Class;
...
end record;
Now my basic problem -- or not really a problem -- is that to create
the Message_Class I have to use
"new" and allocate and deallocate memory.
Now - my solution was to re-write my message factory to return a type
Message'Class. However, I went
to change my callback structure to:
type CallbackEvent is
record
next reply other threads:[~2007-07-30 17:53 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-30 17:53 shaunpatterson [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-07-30 17:53 Pointers explained? shaunpatterson
2007-07-30 17:56 ` shaunpatterson
2007-07-30 19:04 ` Ed Falis
2007-07-30 19:05 ` Ludovic Brenta
2007-07-30 19:36 ` Adam Beneschan
2007-07-30 21:23 ` Maciej Sobczak
2007-07-30 22:36 ` Adam Beneschan
2007-07-31 7:33 ` Dmitry A. Kazakov
2007-07-31 1:15 ` Anh Vo
2007-07-30 22:20 ` Adam Beneschan
2007-07-30 21:31 ` Jeffrey R. Carter
2007-07-31 17:21 ` Simon Wright
2007-07-31 18:06 ` Dmitry A. Kazakov
2007-07-31 22:38 ` shaunpatterson
2007-08-01 7:53 ` Martin Krischik
2007-08-01 8:21 ` Dmitry A. Kazakov
2007-08-10 19:52 ` Simon Wright
2007-07-30 20:11 ` Dmitry A. Kazakov
2007-07-31 8:28 ` Martin Krischik
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