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https://issues.apache.org/jira/browse/ARROW-10557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17251793#comment-17251793
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Maarten Breddels commented on ARROW-10557:
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This would be easier to implement using the tools in utf8.h (e.g.
UTF8FindIfReverse) in that PR
> [C++] Add scalar string slicing/substring kernel
> -------------------------------------------------
>
> Key: ARROW-10557
> URL: https://issues.apache.org/jira/browse/ARROW-10557
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Maarten Breddels
> Assignee: Maarten Breddels
> Priority: Major
>
> This should implement slicing scalar string values of strings arrays with
> Python semantics with start, stop ,step arguments. This may seem similar to
> lists, or binary array, but the string length semantics enter into this
> kernel, which does not need to equal the number of bytes, nor the number of
> codepoints (accents, etc should be skipped).
>
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