Hi,

I have some code that works using std::valarray and I would like to try replacing std::valarray with Eigen::Array. I am hitting a problem with assignment from a scalar which seems to be possible with valarray but not Array. For example, the following works:

Code: Select all

std::valarray<double> x (3);
x = 1.0;


Whereas the following generates an error for me:

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Eigen::ArrayXd x (3);
x = 1.0;

Is there some easy way to make this work without changing the assignment statement? If not, I would be happy to try and patch in this behaviour but I would really appreciate it if someone could give me some pointers on where to start. Also, if I were to patch in such behaviour would this potentially be a useful addition to the Array class?

the best is to patch the class ArrayBase in src/Core/ArrayBase.h to add an overload of operator= for Scalar that would simply call derived().fill(value) and send the path on the bugzilla: http://eigen.tuxfamily.org/bz/ so that other developers can comment on this addition.

ggael wrote:the best is to patch...

Thanks, the advice is appreciated.