On 01/07/10 11:32, Raffi Enficiaud wrote:
An example of use could be (general idea, not a real code of course): // --------------
template <class real_type> int template_function(real_type const& r_class1, double param_d, int& param_out) { // ... return 0; }
int interface_function(MyInterface const* i_class1, variant const& param, variant& out) { // return value int return_value;
// constructs the dispatcher object with a reference to the values passed to interface_function dispatcher<int, MyInterface const*, variant const&, variant&> dispatch_object(return_value, i_class1, param, out);
bool res = dispatch_object.calls_first( fusion::vector_tie( template_function < class_t1 >, template_function < class_t2 > //... ) ); if(res) return return_value; return -1; }
Isn't that what apply_visitor already does, albeit it only deals with variant and not base classes?