copying a std::vector to a qvector

Question

I tried copy content of one vector to a QVector using the following

std::copy(source.begin(), source.end(), dest.begin());

However

Answer 1

As the other answers mentioned, you should use the following method to convert a QVector to a std::vector:

std::vector QVector::toStdVector() const

And the following static method to convert a std::vector to a QVector:

QVector QVector::fromStdVector(const std::vector & vector)

Here is an example of how to use QVector::fromStdVector (taken from here):

std::vector stdvector;
stdvector.push_back(1.2);
stdvector.push_back(0.5);
stdvector.push_back(3.14);

QVector vector = QVector::fromStdVector(stdvector);

Don't forget to specify the type after the second QVector (it should be QVector::fromStdVector(stdvector), not QVector::fromStdVector(stdvector)). Not doing so will give you an annoying compiler error.