Wolf Vollprecht created ARROW-3550:
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Summary: [C++] Use kUnknownNullCount in NumericArray constructor
Key: ARROW-3550
URL: https://issues.apache.org/jira/browse/ARROW-3550
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Wolf Vollprecht
Currently, the default value in the NumericArray constructor for the null_count
is 0.
I wonder wether it would be better to use kUnknownNullCount instead? A user
could still choose to supply a null_count of 0, or a nullptr as bitmask which
would imply a null_count of 0 as well.
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