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From: Hyman Rosen <hyrosen@mail.com>
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Subject: Re: why learn C?
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Date: Fri, 13 Apr 2007 16:21:47 GMT
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Robert A Duff wrote:
> But I don't see any way in which that would prevent
> me from designing an Ada-like language with implicit instantiation.

Yes, I think you're right. I'm thinking of what can be done with C++
template metaprogramming. That requires specialization and the ability
to distinguish between types based on their names and template parameters,
and I don't know if that can be fitted into the context of Ada where
subtypes and generic instantiations depend upon local context.

> If I remember, the C++ rules include preference rules, though.  Is that
> correct?  Preference rules can cause Beaujolais effects, which in my
> opinion are very bad.

Yes, preference rules abound. They're applied one parameter at a time,
though, which helps limit the confusion.