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Posted to issues@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2020/02/18 17:52:00 UTC

[jira] [Updated] (ARROW-971) [C++/Python] Implement Array.isvalid/notnull/isnull

     [ https://issues.apache.org/jira/browse/ARROW-971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-971:
---------------------------------
    Component/s: C++ - Compute

> [C++/Python] Implement Array.isvalid/notnull/isnull
> ---------------------------------------------------
>
>                 Key: ARROW-971
>                 URL: https://issues.apache.org/jira/browse/ARROW-971
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++ - Compute, Python
>            Reporter: Wes McKinney
>            Priority: Major
>              Labels: dataframe
>          Time Spent: 0.5h
>  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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