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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: Run-Time Type Assignment
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Date: Wed, 28 Aug 2002 22:32:52 GMT
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Date: 2002-08-28T22:32:52+00:00
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lutz@iks-jena.de (Lutz Donnerhacke) writes:

> * Robert A Duff wrote:
> >In Pascal, downward closures are very useful for making iterators and
> >other user-defined control structures.
> 
> In Ada you use generics for this.

Sometimes, you do.  The syntax is horrible.  Furthermore, generics are
more restrictive -- there are things you can't do, which you could do
with downward closures.

Not to mention the fact that the generic solution requires massive
recompilation of the whole world.

- Bob