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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Class with task destructor
Date: Mon, 28 Nov 2011 21:40:13 -0600
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Date: 2011-11-28T21:40:13-06:00
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:1hi4mzlr17z6m.1t1rj0maa8vmt.dlg@40tude.net...
> On Thu, 24 Nov 2011 18:34:55 -0800 (PST), Rego, P. wrote:
...
>> 1) Why should I need to use Finalize (instead of direct T.Primary.Finish 
>> in Destruct)?
>
> Because Finalize is always called when the object is being finalized.

Which includes when the object goes away because of an exception being 
raised somewhere, a task being aborted, or some containing object being 
deallocated. Using Finalize makes your object far less fragile than trying 
to destroy it manually (and also allows it to be used anywhere Ada allows an 
object, rather than just as a stand-alone entity).

Claw provides a Destroy routine so that windows can be closed early, but 
there is never a requirement to call it.

                            Randy.