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https://issues.apache.org/jira/browse/ARROW-37?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212445#comment-15212445
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Wes McKinney commented on ARROW-37:
-----------------------------------
https://github.com/apache/arrow/pull/40
> C++: Represent boolean array data in bit-packed form
> ----------------------------------------------------
>
> Key: ARROW-37
> URL: https://issues.apache.org/jira/browse/ARROW-37
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
>
> This is not explicit in the Arrow specification (we should make this
> concrete), but has the additional benefit of making code for null bitmaps and
> boolean arrays interchangeable.
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