AMDG Ion Gaztañaga <igaztanaga <at> gmail.com> writes:
before
class my_value_traits { node_ptr to_node_ptr(value_type &val) //... };
after
class my_value_traits { template<class Container> node_ptr to_node_ptr(value_type &val, const Container& cont) //... };
So if there is any metaprogramming hack (if increases compilation time too much, forget it ) I would like to receive suggestions.
typedef char no; struct yes { no dummy[2]; }; template<class T> yes convert_result(const T&); no convert_result(const no&); template<class T> T make(); template<class Base> struct has_plain_to_node_ptr_impl : Base { no to_node_ptr(...); using Base::to_node_ptr; }; template<class T> struct has_plain_to_node_ptr { enum { value = (sizeof(convert_result( has_plain_to_node_ptr_impl<T>::to_node_ptr( make<const value_type&>() ))) == sizeof(yes))}; }; In Christ, Steven Watanabe