ENH: Add method='table' for EWM.mean

[mroeschke]

• tests added / passed
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• whatsnew entry
  close ENH: Add method='table' for EWM.mean #42273

[attack68]

Since this only works for engine='numba' and for mean would it not be better to wrap this simply into mean(engine='numba-table') or the like?

Or, is the plan to try and expand this functionality more generally and therefore your way is better?

[mroeschke]

Yes, the hope is to eventually enable method="table" for other EWM operations (var, std) in the future with numba.

This also mirrors the API we have for rolling and expanding

[jreback]

thanks @mroeschke