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Date: Thu, 07 Feb 2008 22:31:09 -0500
From: "Peter C. Chapin" <pchapin@sover.net>
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Subject: Re: Question about controlled types.
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Date: 2008-02-07T22:31:09-05:00
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Robert A Duff wrote:

> Right, the C++ way has the advantage that a single operation can get its
> hands on the left- and right-hand sides at the same time.  The reason
> Ada doesn't have this feature is that we couldn't figure out how to make
> it work for records whose discriminants can change.  And we couldn't
> simply outlaw that case, because it would introduce a violation of the
> generic contract model.

That's interesting thanks.

Peter