From: Marius Amado-Alves <marius@amado-alves.info>
To: comp.lang.ada@ada-france.org
Subject: Re: Actual stream of a certain type
Date: Thu, 27 Jul 2006 09:45:45 +0100
Date: 2006-07-27T10:50:50+02:00 [thread overview]
Message-ID: <mailman.4.1153989964.32700.comp.lang.ada@ada-france.org> (raw)
In-Reply-To: <kqdop3ewo06.z30ns7l2w4h5.dlg@40tude.net>
> procedure Write_T (Stream : in out T_Stream; Item : T'Class) is
> begin
> Foobar (Stream, Item);
> end Write_T;
>
> procedure Write
> ( Stream : access Ada.Streams.Root_Stream_Type'Class;
> Item : T
> ) is
> begin
> if Stream.all not in T_Stream'Class then
> raise Actual_Stream_Must_Be_A_T_Stream;
> else
> Write_T (T_Stream'Class (Stream.all), Item);
> end if;
> end Write;
Thanks a lot! I'll try this. I did not try it before because I
thought the call to Write_T on Write would not pass Stream as a
variable, i.e. the conversion would create a read-only view. But if
you wrote it, it must be one of those Ada idiosyncrasies. Thanks a lot.
next prev parent reply other threads:[~2006-07-27 8:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-26 17:27 Actual stream of a certain type Marius Amado-Alves
2006-07-26 18:25 ` tmoran
2006-07-26 23:47 ` Marius Amado-Alves
2006-07-27 8:05 ` Dmitry A. Kazakov
2006-07-27 8:45 ` Marius Amado-Alves [this message]
[not found] ` <2AA0FC04-5130-42BF-A6C9-03C3D6F4C642@amado-alves.info>
2006-07-27 10:47 ` Marius Amado-Alves
[not found] ` <71E9A504-B016-49E2-AB85-34CCDF0AEEC8@amado-alves.info>
2006-07-27 0:25 ` Marius Amado-Alves
[not found] <03AF72A2-6759-4DE5-9D52-4E8266C19C43@amado-alves.info>
2006-07-26 18:04 ` Marius Amado-Alves
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox