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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: limited types (Was: Records that could be arrays)
Newsgroups: comp.lang.ada
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Date: Sun, 26 Feb 2006 10:00:07 +0100
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Date: 2006-02-26T09:59:58+01:00
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On Sat, 25 Feb 2006 15:05:02 GMT, Matthew Heaney wrote:

> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
> 
>> I think that there should also be [limited] containers of limited types.
>> For this we need a construction model, which would allow user-defined
>> in-place constructors. After all Ada has always had arrays of limited
>> components. We have to extend this model onto user-defined containers.
> 
> But you can pass in an Initialize procedure as a parameter of an insertion
> operation, to perform whatever initialization needs to be done.

You mean "return .. do" for limited types. It is in-place, but a
constructing function does not have safety of a constructor. Then you
cannot ask it from the type, so it can't have a default [deduced from the
type.] It is not dispatching in Insert. What about container of
class-wides, i.e. when Node_Type should have ET'Class?

... and of course passing pointers to functions is ugly.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de