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https://issues.apache.org/jira/browse/ARROW-15822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17503872#comment-17503872
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Neal Richardson commented on ARROW-15822:
-----------------------------------------
My mistake, this was apparently only recently added in ARROW-6780. Can you try
with a nightly version of the package?
> [R] arrow_write_csv cannot write difftime objects
> -------------------------------------------------
>
> Key: ARROW-15822
> URL: https://issues.apache.org/jira/browse/ARROW-15822
> Project: Apache Arrow
> Issue Type: Bug
> Components: R
> Affects Versions: 7.0.0, 7.0.1
> Reporter: Carl Boettiger
> Priority: Major
>
> Consider this reprex:
> {code:java}
> arrow::write_csv_arrow(data.frame(time = as.difftime(1, units="secs")),
> "test.csv"){code}
> This errors with:
> Error: NotImplemented: Unsupported cast from duration[s] to utf8 using
> function cast_string
>
> Note that readr::write_csv() has no trouble with this (which renders the data
> as "1" without a unit). Arguably the readr rendering is lossy, but then we
> usually assume units are provided in other metadata anyway.
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