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https://issues.apache.org/jira/browse/ARROW-4729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16861451#comment-16861451
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Wes McKinney commented on ARROW-4729:
-------------------------------------
probably
{code}
static constexpr int kBufferValidity = 0;
static constexpr int kBufferFixedSizeData = 1;
static constexpr int kBufferVarOffsets = 1;
static constexpr int kBufferVarData = 2;
{code}
etc
> [C++] Improve buffer symbolic index
> -----------------------------------
>
> Key: ARROW-4729
> URL: https://issues.apache.org/jira/browse/ARROW-4729
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 0.12.1
> Reporter: Francois Saint-Jacques
> Priority: Minor
>
> The array data `buffers` vector is index differently depending on the Array
> type. This feature would expose static constexpr named variables for buffer
> index.
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