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https://issues.apache.org/jira/browse/ARROW-4698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17661720#comment-17661720
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Rok Mihevc commented on ARROW-4698:
-----------------------------------
This issue has been migrated to [issue
#21225|https://github.com/apache/arrow/issues/21225] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> [C++] Let StringBuilder be constructible with a pre allocated buffer for
> character data
> ---------------------------------------------------------------------------------------
>
> Key: ARROW-4698
> URL: https://issues.apache.org/jira/browse/ARROW-4698
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Ben Kietzman
> Priority: Minor
>
> This is useful for example when an existing buffer can be immediately reused.
> This is currently used for [storage of strings in json
> parsing](https://github.com/apache/arrow/blob/master/cpp/src/arrow/json/parser.cc#L60),
> so it'd be straightforward to refactor into a constructor of StringBuilder.
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