Modern C++: Efficient and Scalable Application Development

How to do it...

To manipulate an std::vector<bool>, use the same methods you would use for an std::vector<T>, as shown in the following examples:

• Creating an empty vector:

        std::vector<bool> bv; // []

• Adding bits to the vector:

        bv.push_back(true);  // [1]        bv.push_back(true);  // [1, 1]        bv.push_back(false); // [1, 1, 0]        bv.push_back(false); // [1, 1, 0, 0]        bv.push_back(true);  // [1, 1, 0, 0, 1]

• Setting the values of individual bits:

        bv[3] = true;        // [1, 1, 0, 1, 1]

• Using generic algorithms:

        auto count_of_ones = std::count(bv.cbegin(), bv.cend(), true);

• Removing bits from the vector:

        bv.erase(bv.begin() + 2); // [1, 1, 1, 1]