From: Reece Dunn (msclrhd_at_[hidden])
Date: 2004-04-07 12:20:55
Matthew Vogt wrote:
>The following simple base class implements the mechanism as dicussed on
>Stroustrup's FAQ page, and encapsulates the virtual inheritance so that the
>class can be non-virtually inherited, removing the most obvious chance of
>implementation error.
>Will this code work on multiple platforms? I have only tested on gcc 3.2...
>[snip]
Why can't you do:
namespace boost
{
template< class T >
struct nonderivable;
namespace detail
{
template< class T >
class nonderivable_base
{
friend T;
friend class nonderivable< T >;
nonderivable_base()
{
}
nonderivable_base( const nonderivable_base & )
{
}
};
}
template< class T >
struct nonderivable: public virtual detail::nonderivable_base< T >
{
};
}
This *will* work with MS VC 6-7.1 and Borland 5.5.1. I haven't tested on GCC
or other compilers, but it should work.
Regards,
Reece
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