I need to calculate which class is belongs to every td in my table according to specific logic for every td.
I also need to detect changes and update the class if the data change

what is a best practice to do it?

example:
I have a cars signal data –
cars = toSignal(this.dataService.cars);

and I tried to write a computed like that:
carStatus: Signal = computed(() => this.calcStatus);

this work fine to the first TD but I want to compute also the color (for example)
should I write more computed function to the color calculation?

and what if I have 10 rows in the table?
how to calc the class for every td in every row?