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Subject: Re: A bad counterintuitive behaviour of Ada about OO
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Date: 2014-08-08T02:18:36-06:00
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On 08-Aug-14 01:43, Dmitry A. Kazakov wrote:
> On Thu, 07 Aug 2014 16:53:50 -0400, Robert A Duff wrote:
>
>> I think types should be generic, instead.  See Eiffel.
>
> You need some clearl  defined scope where the format parameter would be
> visible:
>
>     generic
>         with ... Something;
>     type Generic_Mess is ...;
>     ...
>     -- many lines below
>
>     procedure Bar (Y : Generic_Mess; X : Something);
>
>     -- even more lines after. Is this OK?
>     procedure Foo (X : Something) return String;
>
> But, surely, discriminants do the job to me.

I think you misunderstand him -- what he's saying, to me, sounds a lot 
like your "type-classes" or my "abstract type" idea.