// Copyright Louis Dionne 2013-2017 // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) #include <boost/mpl/find_if.hpp> #include <boost/mpl/integral_c.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/quote.hpp> #include <boost/mpl/vector.hpp> namespace mpl = boost::mpl; struct is_last { template <typename N> struct apply : mpl::integral_c<bool, N::type::value == <%= input_size %>> { }; }; using vector = <%= mpl_vector((1..input_size).to_a.map { |n| "mpl::integral_c<int, #{n}>" }) %>; using result = mpl::find_if<vector, is_last>::type; int main() { }