html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/4208#issuecomment-656349279,https://api.github.com/repos/pydata/xarray/issues/4208,656349279,MDEyOklzc3VlQ29tbWVudDY1NjM0OTI3OQ==,19578931,2020-07-09T21:01:07Z,2020-07-09T21:01:07Z,CONTRIBUTOR,"I can go ahead with putting together a PR for this. Before I do so, I'd like to clarify what is expected.

- Implement the `is_duck_dask_array()` function
- In that implementation, use `dask.base.is_dask_collection()` and the existing duck array check(s)
- Replace `isinstance(x, dask.array.Array)` checks with the new `is_dask_duck_array()` function

I searched for existing duck array checks in xarray and nothing immediately obvious to me is showing up. It looks like a check for `__array_function__` is inappropriate based on discussion in #3917. Could someone point out the proper duck array check?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,653430454