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From: Stephen Leake <stephen_leake@stephe-leake.org>
Newsgroups: comp.lang.ada
Subject: Re: Ada requires too much typing!
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Date: Fri, 11 Jun 2010 05:14:38 -0400
Message-ID: <82eigend6p.fsf@stephe-leake.org>
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Date: 2010-06-11T05:14:38-04:00
List-Id: <comp.lang.ada>

Georg Bauhaus <rm.dash-bauhaus@futureapps.de> writes:

> On 10.06.10 10:57, Vadim Godunko wrote:
>> On Jun 10, 11:20 am, AdaMagica <christoph.gr...@eurocopter.com> wrote:
>>> On 10 Jun., 08:34, Vadim Godunko <vgodu...@gmail.com> wrote:
>>>
>>>> I want to known more about how to use OOP in Ada without access types!
>>>
>>> type Element is tagged ...
>>> subtype Any_Element is Element'Class;
>>>
>>> procedure Show (E: Element);
>>>
>> Thank you for example, this is example of dispatching but not use of
>> Ada in heavy OOP style of programming. :-)
>
> Will it, in theory, be possible to write a Qt-like library
> in Ada such that client programs declare variables like
>
>    W : Some_Window'Class := Some_Lib_Pack.Make (Typ => Some_Id);
>
> That is, programs do not use access Some_Window'Class?

No. Because the underlying C++ uses pointers, so the Ada has to as well.

-- 
-- Stephe