issue_comments: 451271931

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https://github.com/pydata/xarray/pull/2639#issuecomment-451271931 https://api.github.com/repos/pydata/xarray/issues/2639 451271931 MDEyOklzc3VlQ29tbWVudDQ1MTI3MTkzMQ== 6815844 2019-01-03T20:46:53Z 2019-01-03T20:46:53Z MEMBER

@shoyer

It looks nice and reasonable to me.

(This PR) Indexes are recreated from coordinates every time a new DataArray or Dataset is created.

Does it add some overhead (though I don't see any reason of it)?

 
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