`bit::vector` — Resize a Bit-Vector

Resize a bit-vector initializing added elements to 0.

constexpr bit::vector &resize(std::size_t n);

If n < size(), the bit-vector is reduced in size to the first n elements. + If n > size(), extra 0s are appended to the bit-vector to increase it to size n.

This method returns a reference to *this so it can be chained with other calls.

Example

#include <bit/bit.h>
int main()
{
1    auto v = bit::vector<uint8_t>::checker_board(8);
    std::cout << v << ":\t\t size " << v.size() << ", capacity " << v.capacity() << '\n';
2    v.resize(12);
    std::cout << v << ":\t size "   << v.size() << ", capacity " << v.capacity()  << '\n';
3    v.resize(8);
    std::cout <<  v << ":\t\t size " << v.size() << ",capacity " << v.capacity() << '\n';
}

1: Construct a bit-vector of size eight where the underlying block size is just 8 bits.
2: Resize the bit-vector to have twelve elements where the extra four are all 0.
3: Resize the bit-vector back down to the original eight elements.

Output

[1 0 1 0 1 0 1 0]:               size 8,  capacity 8
[1 0 1 0 1 0 1 0 0 0 0 0]:       size 12, capacity 16
[1 0 1 0 1 0 1 0]:               size 8,  capacity 16

See Also