# frozen_string_literal: true

[apauly]

Hi,

we're using Axlsx for generating rather large sheets (> 20k rows; > 50 columns).

I think that there could be some quick wins by by applying # frozen_string_literal: true to the CellSerializer class and adjust some of its methods to not modify frozen strings.

Some local profiling showed that this could safe ~1.000.000 object allocations for big sheets.

What do you think about it? If you're open to that, I could prepare a PR.

Best
Alex