no match for 'operator>>' (operand types are 'QDataStream' and 'double')

[simex]

Yeap, I've come to collect the stupid Feel free to pass it on
I have a similar problem here except the problem persists even after the argument was changed to a non-const. Any idea as to why that might happen? Below is the implementation of the two operators.

QDataStream &operator <<(QDataStream &out, const PID &pid)
{
    out << pid.getKp() << pid.getKi() << pid.getKd();
    return out;
}
 
 
QDataStream &operator >>(QDataStream &in, PID &pid)
{
    in >> pid.getKp() >> pid.getKi() >> pid.getKd();
    return in;
}

QDataStream &operator <<(QDataStream &out, const PID &pid)
{
    out << pid.getKp() << pid.getKi() << pid.getKd();
    return out;
}


QDataStream &operator >>(QDataStream &in, PID &pid)
{
    in >> pid.getKp() >> pid.getKi() >> pid.getKd();
    return in;
}

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[anda_skoa]

Do the getter functions, e.g. PID.getKp(), return a reference to which the >> operator could write?

Cheers,
_

[simex]

Yes that was the problem. Thank you. I changed it to the code below and now it's okay. I guess I'll wear my cap for while Thanks again.

QDataStream &operator >>(QDataStream &in, PID &pid)
{
    double kp;
    double ki;
    double kd;
    in >> kp >> ki >> kd;
    pid.setKp(kp);
    pid.setKi(ki);
    pid.setKd(kd);
    return in;
}

QDataStream &operator >>(QDataStream &in, PID &pid)
{
    double kp;
    double ki;
    double kd;
    in >> kp >> ki >> kd;
    pid.setKp(kp);
    pid.setKi(ki);
    pid.setKd(kd);
    return in;
}

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