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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Generic formal access types
References: <3eb01630@epflnews.epfl.ch>
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Date: 2003-05-02T01:14:41+00:00
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> Ok, it is not very useful to have an access type if you do not know its
> content, but the package implements a list and I am just storing them. I
> "need" that because I want to return the value "null" from a function in
> the generic package that returns "Access_Type".
  What's wrong with
generic
    type Element is (<>);
package Lists is
    type Node_Content_Ptr is access Element;