[ublas] How to find out how many nonzero elements are in one row?

From: Markus Weimer (markus.weimer_at_[hidden])
Date: 2008-01-25 04:31:39

Hi,
I iterate over the lines of a sparse matrix and need to find out how many
non zero elements are in the line the iterator points to at the moment. Is
that possible?

Thanks,

Markus