c++ - Convert from QByteArray to array of double -

i have array of double:

qvector<double> y(count); 

i need pack qbytearray send via ethernet.

so did it. not hard:

qbytearray line; line.clear(); line.append(qbytearray::fromrawdata(reinterpret_cast<const char*>(y.data()), count*sizeof(double))); 

i try use code unpack data qbytearray recv :

qvector<double> data((line.size())/sizeof(double)); qbytearray dou(sizeof(double),0x0); for(int = 0; i<data.count(); i++){     dou = recv.mid(i*sizeof(double),sizeof(double));     data[i] = *reinterpret_cast<const double*>(dou.data());     dou.clear(); } 

but don’t it. want find out elegant way unpack qbytearray qvector<double> can me?

you can use qdatastream encode data in binary in a specific format. (more first number of items (int32) , each item)

qvector has overloads stream operators

qbytearray line; qdatastream stream(&line, qiodevice::writeonly); stream << y; 

and read:

qvector<double> data; qdatastream stream(line); stream >> data;