Function aggregate_to_tuple

include/boost/parser/tuple.hpp:276–289

        template<typename Tuple, typename Tie, int... Is>
        auto aggregate_to_tuple(
            Tuple & tup, Tie tie, std::integer_sequence<int, Is...>)
            -> decltype((
                (parser::get(tup, llong<Is>{}) =
                     std::move(parser::get(tie, llong<Is>{}))),
                ...,
                (void)0))
        {
            return (
                (parser::get(tup, llong<Is>{}) =
                     std::move(parser::get(tie, llong<Is>{}))),
                ...,
                (void)0);
        }

        template<typename Tuple, typename T>
        using aggregate_to_tuple_expr = decltype(detail::aggregate_to_tuple(