[eigen] Re: leftCol(0)

[Carlos Becker <carlosbecker@xxxxxxxxx>]

Another remark: doing�std::cout << m.leftCols<0>() << std::endl; ends up in a segfault at compile time.

On Sat, Jun 26, 2010 at 12:25 PM, Carlos Becker <carlosbecker@xxxxxxxxx> wrote:

Hi everyone.

I was trying some code while writing the Block operations tutorial and found that the output of the following program does not make much sense:

#include <Eigen/Dense>

#include <iostream>

��

using namespace Eigen;

��

int main()

{

�� Matrix<float,3,3> m;

m << 1,2,3,

� � 4,5,6,

� � 7,8,9;

� ��

std::cout << m.leftCols(0) << std::endl;

�� �

�� �return 0;

}

I wonder if this is a desired behaviour. I was expecting to get a compile-time error, or at least a run-time one.

Carlos