issue_comments: 788532882

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https://github.com/pydata/xarray/issues/3390#issuecomment-788532882 https://api.github.com/repos/pydata/xarray/issues/3390 788532882 MDEyOklzc3VlQ29tbWVudDc4ODUzMjg4Mg== 1217238 2021-03-02T02:42:37Z 2021-03-02T02:42:37Z MEMBER

Shall we raise a warning in where advising the more-efficient syntax? Or shall we skip the call to where_method

I'm not sure that either of these is a good idea.

The problem with raising a warning is that this is well-defined behavior. It may not always be useful, but well defined but useless behavior arises all the time in programs, so it's annoying to raise a warning for a special case.

The problem with skipping where_method is that now we end up with a potentially inconsistent dtype, depending on the selection. These sort of special cases can be quite frustrating to program around.

 
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