How to Collect Row Indices Based on Table Cell Content?

[SillyFreak]

It’s for a different use case, but the following post could be useful reading:

How to sum column values in a table?

Yes, there are just two things to make sure: you need to store the data somewhere before creating the table you need to make sure that you operate on numbers and not content For demonstration, let’s look at a table you may be starting with: #table( columns: 2, align: right, stroke: none, table.header([Col A], [Col B]), table.hline(), [1], [2], [3], [4], [5], [6], table.hline(), [9], [12], ) This table has three rows of actual data, a header, and manually calculated col…

This effectively what @gezepi has done by defining the countable function.

Btw

@gezepi

it requires passing the arguments differently than a normal table: cells come first as an array, all other arguments afterwards.

You can get around this by splitting the args into the named and positional parts yourself:

#let countable(rowToCount: 0, ..args) = {
  let cells = args.pos()
  let args = args.named()

  //Get the number of columns if given
  let columns = args.named().at("columns", default: 1)
  // in case the columns are given as `(1fr, 1fr)` or similar
  if type(columns) == array { columns = coulumns.len() }
  ...
}

#countable(
  rowToCount: 1,
  columns: 2,
  table.header([a], [b]),
  [1], [],
  [2], [doesn't count],
  [3], [],
)

...

I have also added a small fix regarding counting columns. Feel free to incorporate any or all of this into your answer if you want