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https://issues.apache.org/jira/browse/ARROW-60?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15238391#comment-15238391
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Micah Kornfield commented on ARROW-60:
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A virtual method for AppendNull, but it looks like we are consciously avoiding
anything in a tight loop using virtual methods.
Yes, ListBuilder was making use of the fact that the new data a list needs to
allocate is bitmap + a buffer of int32s but it is kind of hacky. I am
working on trying to refactor it to something that makes more logical sense to
me as part of the List IPC stuff.
> C++: Struct type builder API
> -----------------------------
>
> Key: ARROW-60
> URL: https://issues.apache.org/jira/browse/ARROW-60
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Assignee: Kai Zheng
>
> At the moment, we are able to represent struct metadata but not actually
> build struct-type arrays.
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