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https://issues.apache.org/jira/browse/ARROW-8172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou closed ARROW-8172.
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Resolution: Duplicate
Already filed ;-)
> [C++] ArrayFromJSON for dictionary arrays
> -----------------------------------------
>
> Key: ARROW-8172
> URL: https://issues.apache.org/jira/browse/ARROW-8172
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 0.16.0
> Reporter: Ben Kietzman
> Priority: Minor
> Fix For: 2.0.0
>
>
> It would be useful for testing if {{ArrayFromJSON}} could be instructed to
> dictionary encode its values by passing a dictionary type.
> {code}
> auto dict_encoded_strings = ArrayFromJSON(dictionary(int8(), utf8()), R"([
> "whiskey", "tango", "foxtrot"
> ])");
> {code}
> See discussion
> https://github.com/apache/arrow/pull/6641#pullrequestreview-377768482
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