Hamish Mackenzie wrote:


>  Yes this is a problem.  It would be handy to have a way to
>  check the type so
>  
>    void f( const optional< some_big_class > & );
>  
>  would become
>  
>    template< typename T >
>    void f( const T & )
>    {
>      BOOST_STATIC_ASSERT(
>        is_optional_version_of< some_big_class, T >::value );
>      ...
>    }

Probably overloading using boost::enable_if is a solution in this case.


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