// SPDX-FileCopyrightText: The Eigen Authors // SPDX-License-Identifier: MPL-2.0 RowVector4i v = RowVector4i::Random(); cout << "Here is the vector v:" << endl << v << endl; cout << "Here is v.tail(2):" << endl << v.tail(2) << endl; v.tail(2).setZero(); cout << "Now the vector v is:" << endl << v << endl;