Re: An overloaded operator& needs the address of its argument

From:
"Igor Tandetnik" <itandetnik@mvps.org>
Newsgroups:
microsoft.public.vc.language
Date:
Wed, 9 May 2007 08:15:27 -0400
Message-ID:
<u2ITEPjkHHA.3484@TK2MSFTNGP02.phx.gbl>
"Angel Tsankov" <fn42551@fmi.uni-sofia.bg> wrote in message
news:ewnW4FjkHHA.1624@TK2MSFTNGP02.phx.gbl

How can an overloaded operator& take the address of its argument:

template<typename T>
Smth operator &(T& SomeObject)
{
   // The address of SomeObject is needed here
}


template<typename T>
Smth operator &(T& SomeObject)
{
    char* pch = &reinterpret_cast<char&>(SomeObject);
    T* pT = reinterpret_cast<T*>(pch);
}

But note that such a global operator& overload is a terrible idea. For
example, STL containers require that &t return an address of t, and
nothing else. Your operator makes every single class unusable in any STL
container.

Also note that your operator will not be invoked for built-in types.
--
With best wishes,
    Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925

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