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From: Magnus Larsson <mla_mla@my-deja.com>
Subject: Re: Object Oreinted Style
Date: 2000/03/31
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 <dale-617BD4.22171828032000@news.rmit.edu.au>
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In article <dale-617BD4.22171828032000@news.rmit.edu.au>,
Dale Stanbrough <dale@cs.rmit.edu.au> wrote:
[.....]
>
> Def. child packages "open up" the full view of a parent type declared
> in a parent package, and in this regard invite abuse by preventing
> total encapsulation.
I am by no means an expert in this area, but isn't a "private package"
a solution here?
like :
package Parent is
type Base_Type is....
...
end Parent;
private package Parent.Child is
type Derived_type is new Base_type.....
...
end Parent.Child;
Or have i completly missed the point here? I thought this construct does
exactly this and "closes" any direct access to the child.
Magnus
> Dale
>
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.|,
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mla@omicron.se


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