From: Joel de Guzman

...

Maybe boost::fusion can help.

Sure:

typename boost::fusion::result_of::as_vector::type

I am new to boost, so could you elaborate this a bit? I can't seem to find anything called result_of in the boost::fusion namespace. If this name is hidden by some macro magic, could you give the header file I have to #include? Else could you explain what am I missing? I was able to do something like this: #include #include #include #include using namespace boost::mpl; using namespace boost::fusion; using namespace boost; typedef vector::type typelist; typedef meta::generate<typelist>::type my_tuple; int main() { my_tuple t; t = make_tuple(1, 'a', 0.25); } But I have the feeling this might not be the intended way of usage ... Regards ImRe