nlines is user-facing but it does not work on general tables

[Melkiades]

I was trying to get the global number of lines without having to get nlheader from matrix_form. So, I guess, the first question is the following: is there a function to find the total number of lines? if yes, we should document it in rtables::nrow. See here for a follow-up on this. If not, we should have one and intuitively I was searching for rtables::nlines but maybe too a specific variable in nrow like this rtables::nrow(..., with_header = T). Let me know what you think @gmbecker

[gmbecker]

header materials are not rows, so I don't think we should have an option to have them "taken into account" via nrow.

Note also that nrow does not (and will not ever) have the option to take word wrapping into account. It really is about rows, not lines.

We can think about having an nlines method for tables (to be perfectly honest, I thought we already had one), but that will never be the same thing as nrow

Note for context that nrow for data.frames does not ever include the column names, only actual rows.

[gmbecker]

Also, this is an issue for rtables, as that is where such a method would live, not here in formatters (which does not understand, and cannot have any code that directly interacts with, the VTableTree method).

I'd like to know a little more about the exact question you were trying to answer that lead you down this path, though.