How to write and read a 2D bool array using QTextStream from a file?

Question

Qt

The >> and << operators need to be defined.
How am I trying to write

.....
stream << dataArrays;
.....

static QTextStream& operator << (QTextStream& stream, const BoolModel mData[4])
{
    for(int k = 0; k < 4; k++)
    {
        auto data = mData[k].data();
        stream << "\n";
        for(int i = 0; i < (int)data.size(); i++)
            for (int j = 0; j < (int)data[0].size(); j++)
            {
                stream << data[i][j] << " "; // где data[i][j] - значение bool
            }
        stream << "\n";
    }
    return stream;
}

As a result, something like "0x7fffea105c80" falls into the file, not sure if this is correct.
Reading is really bad, help me figure it out