Benjamin Kietzman created ARROW-5933:
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Summary: [C++] [Documentation] add discussion of Union.typeIds to
Layout.rst
Key: ARROW-5933
URL: https://issues.apache.org/jira/browse/ARROW-5933
Project: Apache Arrow
Issue Type: Bug
Components: C++, Documentation
Reporter: Benjamin Kietzman
Assignee: Benjamin Kietzman
Union.typeIds is poorly documented and the corresponding property in UnionType
is confusingly named type_codes. In particular, Layout.rst doesn't include an
explanation of Union.typeIds and implies that an element of a union array's
type_ids buffer is always the index of a child array.
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