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https://issues.apache.org/jira/browse/ARROW-971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-971:
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External issue URL: https://github.com/apache/arrow/issues/16570
> [C++/Python] Implement Array.isvalid/notnull/isnull as scalar functions
> -----------------------------------------------------------------------
>
> Key: ARROW-971
> URL: https://issues.apache.org/jira/browse/ARROW-971
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Ben Kietzman
> Priority: Major
> Labels: dataframe, pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 7.5h
> Remaining Estimate: 0h
>
> For arrays with nulls, this amounts to returning the validity bitmap. Without
> nulls, an array of all 1 bits must be constructed. For isnull, the bits must
> be flipped (in this case, the un-set part of the new bitmap must stay 0,
> though).
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