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c++qtqstringqtcoreqvector

How can I initialize QVector<QVector<QString>> *matrix (as class member) with new?

I really tried everything but I can't find the solution, I tried first initialize the outer QVector then the inner but it wasn't succesful.

Solution

  • Probably you can't do this, because you missed one >. So try this:

    #include<QDebug>
//...
private:
     QVector<QVector<QString> > *matrix = new QVector<QVector<QString> >;

    And in constructor:

    matrix->append(QVector<QString>() << "hello world");
qDebug() << "output: " << *matrix;

    But I think that you should allocate memory in constructor. For example:

    private:
     QVector<QVector<QString> > *matrix;

    In constructor:

    matrix = new QVector<QVector<QString> >;
matrix->append(QVector<QString>() << "hello world");
qDebug() << "output:" << *matrix;

    Output in both cases:

    output: QVector(QVector("hello world") )