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Newsgroups: comp.lang.ada
Date: Tue, 21 Jul 2015 16:40:28 -0700 (PDT)
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Subject: Re: If not Ada, what else...
From: Shark8 <onewingedshark@gmail.com>
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Xref: number.nntp.giganews.com comp.lang.ada:194255
Date: 2015-07-21T16:40:28-07:00
List-Id: <comp.lang.ada>

On Tuesday, July 21, 2015 at 2:05:53 PM UTC-6, J-P. Rosen wrote:
>
> And how would you make the difference between specific and class-wide
> types? (A huge advantage of Ada over other OO models, IMHO)

Good question.
One of the things that other OO-models get wrong is to shove everything into 'class' thus ignoring the fact the type is NOT the hierarchy-of-types rooted at that type. (ie. implicit conversion down that hierarchy.)

Though I don't see why the proposal couldn't use the 'Class attribute to do that, the bigger problem [IMO] is that by calling this a "class type" you are blurring the lines between that hierarchy and the actual type.