eigen/doc/snippets/MatrixBase_eval.cpp
Gael Guennebaud c10f069b6b * Merge Extract and Part to the Part expression.
Renamed "MatrixBase::extract() const" to "MatrixBase::part() const"
* Renamed static functions identity, zero, ones, random with an upper case
  first letter: Identity, Zero, Ones and Random.
2008-07-21 00:34:46 +00:00

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Matrix2f M = Matrix2f::Random();
Matrix2f m;
m = M;
cout << "Here is the matrix m:" << endl << m << endl;
cout << "Now we want to replace m by its own transpose." << endl;
cout << "If we do m = m.transpose(), then m becomes:" << endl;
m = m.transpose();
cout << m << endl << "which is wrong!" << endl;
cout << "Now let us instead do m = m.transpose().eval(). Then m becomes" << endl;
m = M;
m = m.transpose().eval();
cout << m << endl << "which is right." << endl;