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https://issues.apache.org/jira/browse/ARROW-3540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-3540:
------------------------------
    External issue URL: https://github.com/apache/arrow/issues/19855

> [Rust] Incorporate BooleanArray into PrimitiveArray
> ---------------------------------------------------
>
>                 Key: ARROW-3540
>                 URL: https://issues.apache.org/jira/browse/ARROW-3540
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Rust
>            Reporter: Paddy Horan
>            Assignee: Paddy Horan
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 0.12.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> Currently we have a specific implementation for `BooleanArray` (bit-packing), 
> but due to the `ArrowPrimitiveType` trait which we use as a trait bound in 
> many places `PrimitiveArray<bool>` is still a valid type.  `make_array` 
> actually uses `PrimitiveArray<bool>` which may be a bug but would be fixed by 
> this issue anyway.
> I propose move the implementation of `BooleanArray` into 
> `PrimitiveArray<bool>`, this would allow us to use the `ArrayPrimitiveType` 
> trait as a bound more consistently.  i.e. `PrimitiveArrayBuilder<T>` could 
> return `PrimitiveArray<T>` instead of having a separate `BooleanArrayBuilder`.



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