Given a list of indices corresponding to a row in the factor, returns the list of indices corresponding to the next row.
Given a list of indices corresponding to a row in the factor, returns the list of indices corresponding to the next row. Returns None if the last index list has been reached.
(Changed in version 2.9.0) The behavior of scanRight
has changed. The previous behavior can be reproduced with scanRight.reverse.
(Changed in version 2.9.0) transpose
throws an IllegalArgumentException
if collections are not uniformly sized.