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Posted to jira@arrow.apache.org by "Andrew Lamb (Jira)" <ji...@apache.org> on 2021/04/26 12:47:02 UTC

[jira] [Commented] (ARROW-11471) [Rust] DoubleEndedIterator for BitChunks

    [ https://issues.apache.org/jira/browse/ARROW-11471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332204#comment-17332204 ] 

Andrew Lamb commented on ARROW-11471:
-------------------------------------

Migrated to github: https://github.com/apache/arrow-rs/issues/173

> [Rust] DoubleEndedIterator for BitChunks
> ----------------------------------------
>
>                 Key: ARROW-11471
>                 URL: https://issues.apache.org/jira/browse/ARROW-11471
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust
>    Affects Versions: 3.0.0
>            Reporter: Jörn Horstmann
>            Assignee: Jörn Horstmann
>            Priority: Major
>
> The usecase is to efficiently find the last non-null value in an array slice by iterating over the bits in chunks and using u64::leading_zeroes



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