Excel::Writer::XLSX (Perl) 表格内省

Question

For some time I've wondered if/when this module could get some introspection abilities, beyond just hacking on the object.

For example:

Once a sheet has been written, how can I know query the sheet object to know things like how many rows and columns it has?

What I want to do is write a number of sheets, then go back to each and write more rows to them. I could keep track of last row/column on my own, but before I do that I'm wondering if I can get that data from the already-written objects, before the final workbook->close.

I think I could count the number of keys in a sheet object's _table hash, but that may be too close to the metal to be "official." I remember John saying not to do that somewhere in the CPAN docs.

Answer 1

I could keep track of last row/column on my own, but before I do that I'm wondering if I can get that data from the already-written objects, before the final workbook->close.

No. That isn't possible. Excel::Writer::XLSX doesn't provide any tools for introspecting the data once it crosses the APIs. This is a deliberate design decision. You should treat an Excel::Writer::XLSX object as a black box and not some sort of database.

The best way to do what you want is to track the range data in your program.