Question

I have some trouble with removing a empty vector in a vector using the remove-erase idiom like Erasing elements from a vector. How can I apply this on:

vector<vector<Point> > contours; // want to remove contours.at(i).empty()
contours.erase(remove(contours.begin(), contours.end(), ??? ),contours.end());

Answer 1

Have you tried:

contours.erase(remove(contours.begin(), contours.end(), vector<Point>()), contours.end());