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https://issues.apache.org/jira/browse/ARROW-8348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney updated ARROW-8348:
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Component/s: C++
> [C++] Support optional sentinel values in primitive Array for nulls
> -------------------------------------------------------------------
>
> Key: ARROW-8348
> URL: https://issues.apache.org/jira/browse/ARROW-8348
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Francois Saint-Jacques
> Priority: Major
>
> This is an optional feature where a sentinel value is stored in null cells
> and is exposed via an accessor method, e.g. `optional<T>
> Array<T>::HasSentinel() const;`. This would allow zero-copy bi-directional
> conversion with R.
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