Re: [boost] [assign] ptr_list_of legal?

Thorsten Ottosen wrote:

shunsuke skrev:

...

Hi,

I found a snippet from <boost/assign/ptr_list_of.hpp>:

template< class T > class generic_ptr_list { // ... public: template< class PtrContainer > operator std::auto_ptr<PtrContainer>() const { .. } };

IIRC, this automatic conversion doesn't work on any conforming compiler.

Why?

The rule seems complicated. :-( This is because it requires two user-defined conversions? generic_ptr_list -> operator auto_ptr() -> operator auto_ptr_ref() -> auto_ptr In the case of lvalue: generic_ptr_list -> operator auto_ptr&() -> auto_ptr I hope a lawyer will look into this posting. :-) Regards, -- Shunsuke Sogame