How to get the columns in the initComplete event

Wollesen

I am using Jquery datatable to generate a empty table that i need to plot shifts into from some ajax data.
My headers contains dates which i need to compared to my ajax data objects to see if they are the same, then insert a shifts html element.
Unfortunately i have only been able to grab the Settings object in the callback, but it is ill advised to use it and hope for it to last, so any other way of doing this would be greatly appriciated.

Thanks in advance