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From: "Matthew Heaney" <matthew_heaney@acm.org>
Subject: Re: Controlled types for resource locking
Date: 1999/09/09
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In article <rtfpr6pv1iv73@corp.supernews.com> , "Pat Rogers" 
<progers@NOclasswideSPAM.com> wrote:


> "Simpler is in the eye of the beholder".  :-)  I find it simpler to do
> it the other way, but not greatly so.

Perhaps I should have said "more flexible."

My issue with your approach is that the generic only works for types in that
one class (of the imported type).

The other way, the generic works for *any* class, and decouples the
abstractions.


>> I'll be discussing this technique in my Design Patterns tutorial at this
>> year's SIGAda conference.
>
>
> When is the book coming out?

Don't know yet.  I have a couple of book ideas, but I've been busy getting
the tutorial slides done for Dave Cook.  That's done, so now I can finally
start writing...

(And I haven't forgotten my promise to you to write some design pattern
articles for Ada Letters...)

Matt