[jira] [Created] (ARROW-568) [C++] Add default implementations for TypeVisitor, ArrayVisitor methods that return NotImplemented

[Wes McKinney (JIRA)]

Wes McKinney created ARROW-568:
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             Summary: [C++] Add default implementations for TypeVisitor, 
ArrayVisitor methods that return NotImplemented
                 Key: ARROW-568
                 URL: https://issues.apache.org/jira/browse/ARROW-568
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Wes McKinney


This will reduce boilerplate in some visitor implementations that only 
implement a subset of the methods



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