Re: Question about controlled types.

[Robert A Duff <bobduff@shell01.TheWorld.com>]

Hyman Rosen <hyrosen@mail.com> writes:

> There are reasons for doing assignment like this in Ada (or
> at least I think so - I don't really know Ada), but the C++
> assignment operator model is much cleaner.

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.

- Bob