[Boost-users] mpl, apply, placeholders

From: Kiuhnm (kiuhnm03_at_[hidden])
Date: 2006-04-01 11:37:44

I am just a beginner so my question could be very stupid. Please be patient.

What is wrong with the following code?
It should be clear enough what I am trying to do.

>>>
#include <iostream>

#include <boost/mpl/int.hpp>
#include <boost/mpl/apply.hpp>
#include <boost/mpl/plus.hpp>

int main()
{
        using namespace boost::mpl;       // ...

        typedef apply< plus< _, int_<10> >, int_<1> >::type t;
        std::cout << typeid(t).name() << std::endl;

        typedef apply< plus< _, int_<10> >, _ > t2;
        typedef apply< t2, int_<1> >::type res;		// ???

        std::cout << typeid(res).name() << std::endl;
}
<<<

Kiuhnm
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