doc/snippets/Tutorial_Map_rowmajor.cpp

int array[8];
for (int i = 0; i < 8; ++i) array[i] = i;
cout << "Column-major:\n" << Map<Matrix<int, 2, 4> >(array) << endl;
cout << "Row-major:\n" << Map<Matrix<int, 2, 4, RowMajor> >(array) << endl;
cout << "Row-major using stride:\n" << Map<Matrix<int, 2, 4>, Unaligned, Stride<1, 4> >(array) << endl;