Problem regarding QVector

[sudheer168]

Hi ,I am working on Qt4.4.I came across one problem with QVector.I declared a vector containing another vector of type QString.

QVector<QVector<QString> *>mainvec;

QVector<QVector<QString> *>mainvec;

To copy to clipboard, switch view to plain text mode 

Now I want to insert data into vector ie I want to insert 50*50 data into vector mainvec .for that the code i used is

1 for (int i = 0; i < 50; ++i)
2   for (int j = 0; j < 50; ++j)
3      	data[i]->push_back("data");

1 for (int i = 0; i < 50; ++i)
2   for (int j = 0; j < 50; ++j)
3      	data[i]->push_back("data");

To copy to clipboard, switch view to plain text mode 

if I do this my execution was breaking when it comes to the line 3.
So please help me to solve the problem

With Regards,
Sudheer.

[caduel]

i) you insert into a QVector (*data[i] ) that you never allocated!

ii) just use a QList<QStringList>; that is easier and less error prone.

HTH