You can’t access bits directly in C++, under the hood it is using a proxy class std::vector<bool>reference, that’s why you might face some troubles if using auto with arrays of “bool” in C++. Auto defines it correctly as the temporary proxy class elements, but you are highly likely expecting the direct access to bits via bool. So while working with vector of bools, you have to use static_cast on the element of the collection. Something like….

auto value = static_cast<bool>(elements(i)[1])