On 03/29/2006 07:12 AM, David Abrahams wrote:
Václav Veselý <vaclav.vesely@email.cz> writes: [snip]
How this is related to auto_overhead?
I have no idea. Nobody ever explained auto_overhead to me in a way that I could understand.
It's the class template version of your function template, new_. IOW, it's something like: template<class T> struct auto_new : private std::auto_ptr<T> { typedef std::auto_ptr<T> super_type; template< BOOST_PP_ENUM_PARAMS_Z(1, NEW_arity, class A) > auto_new( BOOST_FORWARD_ENUM_BINARY_PARAM_SEQ_R(1, NEW_constness, A, x) ) : super_type(new T(BOOST_PP_ENUM_PARAMS_Z(1, NEW_arity, x))) { } T* get(void) { return super_type::get();} }; (I may have misplaced a '(' or ',' or two. I hope you can see what I meant). Note there's no T* in any CTOR arguments (unless, of course, there's some T CTOR taking a T*). Also note, there's no Overhead<T> as there is in auto_overhead, but that's just another feature (designed to save the extra allocation needed shared_ptr) and wouldn't be relevant to this discussion, AFAICT. Is auto_overhead still unclear?