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From: Maciej Sobczak <see.my.homepage@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: How to pass around access types to interfaces?
Date: Fri, 31 Oct 2008 06:38:17 -0700 (PDT)
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On 29 Pa=BC, 15:15, Martin Krischik <krisc...@users.sourceforge.net>
wrote:

> Not the function call is the problem - the creation and storage of
> objects is.
>
> For example: now are you going to fill a vector<base_class&> with
> objects?

This:

vector<shared_ptr<base_class> >

or this:

http://www.boost.org/doc/libs/1_36_0/libs/ptr_container/doc/ptr_container.h=
tml

> And how do you delete those objects again?

It's automagic.

> This is where C++ lags.

No, this is not a language issue - it is the question of standard
library completeness. In this aspect both Ada and C++ lag terribly.

I have to admit, though, that in the area of OO Ada solves one problem
in a way that is really excellent - it has the ability to create and
return Base'Class from a factory function without explicitly involving
dynamic memory (extended return makes it even nicer).
C++ cannot do that.

--
Maciej Sobczak * www.msobczak.com * www.inspirel.com

Database Access Library for Ada: www.inspirel.com/soci-ada