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Date: Tue, 31 Aug 2004 16:17:12 -0400
From: Hyman Rosen <hyrosen@mail.com>
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Newsgroups: comp.lang.ada
Subject: Re: ADA Popularity Discussion Request
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Date: 2004-08-31T16:17:12-04:00
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Jean-Pierre Rosen wrote:
> If I'm not mistaken, last time I looked at C++ such inner types had 
> local visibility, but still global scope. Not the same thing as truly 
> "local" classes. Correct me if I'm wrong.

It's not a terribly meaningful distinction for C++.
In C++ types do not have any runtime dependencies
the way they can in Ada, and therefore they also do
not any notion of lifetime or extent. So in that
sense, all types are global. But they are local in
the sense that you can declare them where you need
them, like my example.

> Inner classes are classes within classes (same as package inside 
> package, which Ada of course allows), not classes inside functions.

Anonymous classes are a type of inner class, and they most certainly
can be declared/created within functions. Please see this reference:
<http://java.sun.com/docs/books/tutorial/java/javaOO/innerclasses.html>.