Re: [Boost-users] [array] VC++ 7.1 bug and a proposed fix

From: Johan Råde (rade_at_[hidden])
Date: 2006-07-26 06:17:35

John Maddock wrote:
> Daryle Walker wrote:
>>> It is assignable, just not copy-constructable (or at least not
>>> without a core change making arrays copy-constructable).  I wasn't
>>> expecting copy-construction and assignment to behave differently and
>>> it confused me. Happens easily :-)
>> AFAIK, class types with (non-static) array members are _both_
>> assignable and copy-constructible.  See section 12.8 in the 2003 C++
>> standard, paragraph 8 for the copy constructor and paragraph 13 for
>> the assignment operator.  But you MUST use the implicit copying
>> routines, at least for the copy constructor, since arrays do _not_
>> have explicit copying semantics.  This means that generally you must
>> wrap array members in an private struct if you need non-implicit
>> construction, using a private static member function that returns the
>> array's initial value.  See what I did with the
>> "my_configuration::hook" class in "rational_test.hpp" for an example. 
> 
> Doh!  Astonishing how much there is in this language to learn (still!)
> 
> Thanks for the correction,
> 
> John.

I'm not sure I'm quite able to follow this discussion,
but what is the conclusion?
Can I have my fix?

--Johan Råde