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https://issues.apache.org/jira/browse/ARROW-14904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17452419#comment-17452419
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Neal Richardson commented on ARROW-14904:
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I think we just identified a use :)
> [C++] Enable CSV Writer to append / overwrite existing file
> -----------------------------------------------------------
>
> Key: ARROW-14904
> URL: https://issues.apache.org/jira/browse/ARROW-14904
> Project: Apache Arrow
> Issue Type: Sub-task
> Components: C++
> Reporter: Dragoș Moldovan-Grünfeld
> Priority: Major
>
> This would be a match for the {{readr::write_csv()}} {{append}} argument:
> boolean. If {{FALSE}} will overwrite existing file. If {{TRUE}} will append
> to existing file. In both cases, if the file doesn't exist, a new file is
> created.
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