Benjamin Kietzman created ARROW-5326: ----------------------------------------
Summary: [C++] Implement MapType, MapArray, MapBuilder
Key: ARROW-5326
URL: https://issues.apache.org/jira/browse/ARROW-5326
Project: Apache Arrow
Issue Type: New Feature
Components: C++
Reporter: Benjamin Kietzman
Assignee: Benjamin Kietzman
Add implementation of MapType
https://github.com/apache/arrow/blob/master/format/Schema.fbs#L55-L82
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