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From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
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Subject: Re: Full view of a private partial view cannot be a subtype
Date: Tue, 5 Dec 2017 19:16:15 +0100
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Date: 2017-12-05T19:16:15+01:00
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On 12/05/2017 09:20 AM, Dmitry A. Kazakov wrote:
> 
> If Button, Toggle_Button, Radio_Button etc were unrelated then in each event 
> handler within a monstrous case over all possible widgets emitting the event, 
> good luck finding their operations, cutting and pasting same code, you cannot 
> reuse because types are unrelated. Yes, generics they will serve the final 
> stroke to this insanity.

If that were really the way you'd design such a thing if deprived of type 
extension then I would to think you were incompetent to design S/W. I wouldn't 
do it that way.

> You are welcome to propose one. After all it is only the interface you have to 
> design. All the implementation can be based on an existing framework with 
> inheritance and overriding...

The problem with trying to build such a layer on top of an existing framework is 
that they all use the C-inspired idea of giving up your thread of control to the 
framework and it making calls to code you provide. That's not how it should be 
done in a decent language.

-- 
Jeff Carter
"I did not rob a bank. If I'd robbed a bank, everything
would be great. I tried to rob a bank, is what happened,
and they got me."
Take the Money and Run
139