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https://issues.apache.org/jira/browse/ARROW-14982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17454046#comment-17454046
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Niranda Perera commented on ARROW-14982:
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[~apitrou] I thought the method signature was self-explanatory. :D Requirement
is to deep copy an array from an offset (default, 0) to a length (default,
length - offset). Yes, the zulip chat was about buffer offsets, but the main
requirement was to deep copy arrays ultimately.
[~lidavidm] I am not entirely sure if we could use Concatenate (in general
sense). May be, current concatenation does a deep copy even when we pass a
single array vector. But, I think we could check offset=0 and return the input
array (no copy) without violating the "concat" semantic IMO.
> [C++][Python] Create utils for deep-copying an Array/ ArrayData
> ---------------------------------------------------------------
>
> Key: ARROW-14982
> URL: https://issues.apache.org/jira/browse/ARROW-14982
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Python
> Reporter: Niranda Perera
> Priority: Major
>
> Hi, I would like to request a util to deep copy an Array with the following
> semantic.
>
> {code:java}
> Result<shared_ptr<ArrayData>> DeepCopyArrayData(const ArrayData& arr, int64
> offset = 0, int64 length = -1/*, pool=...*/);
> {code}
>
> This was discussed some time back in Zulip [1].
>
> [1]
> [https://ursalabs.zulipchat.com/#narrow/stream/180245-dev/topic/create.20a.20deep.20copy.20of.20buffers]
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