text: // QVector::push_front
  #include <iostream>
  #include <QVector>
  #include <cassert>
  using namespace std;
  
  int main ()
  {
    QVector<int> myQVector;         // two ints with a value of 100
    myQVector.push_back(100);
    myQVector.push_back(100);
    assert(myQVector.front() == 100);
    myQVector.push_front (200);
    assert(myQVector.front() == 200);
    myQVector.push_front (300);
    assert(myQVector.front() == 300);
  
    cout << "myQVector contains:";
    for (QVector<int>::iterator it=myQVector.begin(); it!=myQVector.end(); ++it)
      cout << " " << *it;
  
    cout << endl;
    return 0;
  }
  