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https://issues.apache.org/jira/browse/ARROW-8633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17095920#comment-17095920
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Wes McKinney commented on ARROW-8633:
-------------------------------------
Testing (ignore)
> [C++] Add ValidateAscii function
> --------------------------------
>
> Key: ARROW-8633
> URL: https://issues.apache.org/jira/browse/ARROW-8633
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
> Fix For: 1.0.0
>
>
> In some cases, we want to be able to check whether it's safe to use functions
> that assume ASCII (like {{std::tolower}}, or {{std::string::substr). This was
> implemented in a PR for ARROW-6131 that was not merged
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