1 MatrixXf a(2,2);
2 std::cout << "a is of size " << a.rows() << "x" << a.cols() << std::endl;
3 MatrixXf b(3,3);
4 a = b;
5 std::cout << "a is now of size " << a.rows() << "x" << a.cols() << std::endl;
6