Joris Van den Bossche created ARROW-5890:
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Summary: [C++][Python] Support ExtensionType arrays in more kernels
Key: ARROW-5890
URL: https://issues.apache.org/jira/browse/ARROW-5890
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Joris Van den Bossche
>From a quick test (through Python), it seems that {{slice}} and {{take}} work,
>but the following not:
- {{cast}}: it could rely on the casting rules for the storage type. Or do we
want that you explicitly have to take the storage array before casting?
- {{dictionary_encode}} / {{unique}}
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