I have template function that get variadic templates as (for example) as (int, int, double)
template<class... Arg>
void
bubble(const Arg &...arg)
{ another_function(arg...); }
Inside the function, I must call with a different order of parameters (double, int, int). How can I implement this?
With std::index_sequence, you may do something like:
template <typename Tuple, std::size_t ... Is>
decltype(auto) bubble_impl(const Tuple& tuple, std::index_sequence<Is...>)
{
constexpr auto size = sizeof...(Is);
return another_function(std::get<(Is + size - 1) % size>(tuple)...);
}
template <class... Args>
decltype(auto) bubble(const Args &...args)
{
return bubble_impl(std::tie(args...), std::index_sequence_for<Args...>{});
}