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https://issues.apache.org/jira/browse/ARROW-2969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16713007#comment-16713007
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Romain François commented on ARROW-2969:
----------------------------------------

I need to understand how the data of a structarray is organised in arrow 
memory, this might rather be a data frame column rather than a a nested data 
frame. 

> [R] Convert between StructArray and "nested" data.frame column containing 
> data frame in each cell
> -------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-2969
>                 URL: https://issues.apache.org/jira/browse/ARROW-2969
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: R
>            Reporter: Wes McKinney
>            Priority: Major
>
> These are starting to be more widely used with the tidyr package and 
> elsewhere cc [~hadley]



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