Francois Saint-Jacques created ARROW-8348:
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Summary: [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
Reporter: Francois Saint-Jacques
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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