Thanks again Joel. 2010/1/30 joel falcou <joel.falcou@lri.fr>
Olivier Tournaire wrote:
Hi all,
Given an mpl sequence of types such as: typedef mpl::vector<T0, T1, T2, T3> arg_types;
1) the users of my library provide functors such as F (where T0 and T1 may have been any of the types of arg_types:
class F { typedef mpl::pair<T0,T1> signature_type; double operator()(const T0& t0, T1& t1); }; is there a way to generate signature_type automatically ?
Retrieve the operator() params usign aprameter_types, it'll end up as
vector<F*,T0,T1>
then use mpl::pop_front to remove the unwanted pointer to member
2) if the operator() is overloaded, the user class currently has to
typedef an mpl::vector of mpl::pairs such as
class G { typedef mpl::vector<mpl::pair<T2,T3>, mpl::pair<T1,T1>, mpl::pair<T3,T1>
signature_type; double operator()(const T2& t2, T3& t3); double operator()(const T1& t1, T1& t1); double operator()(const T3& t3, T1& t1); };
Why don't you use something like the result_of protocol ?
Why not. Could you give us more details ? Regards
Maybe easier
-- ___________________________________________ Joel Falcou - Assistant Professor PARALL Team - LRI - Universite Paris Sud XI Tel : (+33)1 69 15 66 35
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users