Const double * to QVector<double>

[beecksche]

Hello,
i got a pointer to an array with double values. But i need the values in a QVector.

const double *array = externObject->getArray();

QVector<double> myArray = array;// how to solve this problem

I can do a for loop, but it doesn't look very well:

QVector<double> myArray;
for(int i = 0; i < externObject->arrayCount(); i++) {
  myArray << externObject->getArray()[i];
}

Is there a better way to do that?

Thanks

[kshegunov]

@beecksche

int count = externObject->arrayCount();
const double * array = externObject->getArray();

QVector<double> myArray(count);
::memcpy(myArray.data(), array, count * sizeof(double));

[VRonin]

your solution is more than acceptable, an alternative is:

QVector<double> myArray(externObject->arrayCount());
std::copy(array,array + externObject->arrayCount(),myArray.begin());

[raven-worx]

@beecksche
you implicitly already showed that it isn't possible with an assignment operator only. (Edit: but i guess that's not what you were after afterall?)
In your loop you used arrayCount() to determine the item count. How would you do it in the assignment operator?

[beecksche]

Thanks everybody for the replies.

I recognized that i need to modify some values. However the loop seems the best way! Thanks a lot!