transporter iterator

[asclines]

What is the final decision on the iterator for the transporter class?

The DataFrame class needs to pass some sort of iterator that goes over all the columns and points only to the rows that need to be moved.

I know there is a tuple where each element of the tuple points to a column in the dataframe but how does the iterator play into this?

[JohnCalhoun]

The dataframe<...>::iterator is a wrapper around that tuple