#include <boost/preprocessor/seq/variadic_seq_to_seq.hpp>
BOOST_PP_VARIADIC_SEQ_TO_SEQ((1)(2, 3)(4, 5, 6)) // expands to ((1))((2, 3))((4, 5, 6))
Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at www.boost.org/LICENSE_1_0.txt)