sgilmore10 opened a new pull request, #47264:
URL: https://github.com/apache/arrow/pull/47264
### Rationale for this change
This is a followup to #38422. Now that `NumNulls` is a property on
`arrow.array.Array`, we should add `NumNulls` as a property on
`arrow.array.ChunkedArray`.
### What changes are included in this PR?
Added `NumNulls` as a property to `arrow.array.ChunkedArray`.
**Example**:
```matlab
>> a1 = arrow.array(1:10);
>> a2 = arrow.array([11 12 NaN 14 NaN]);
>> a3 = arrow.array([16 17 NaN 18 19]);
>> a4 = arrow.array(20:30);
>> C1 = arrow.array.ChunkedArray.fromArrays(a1, a2, a3)
C1 =
ChunkedArray with properties:
Type: [1×1 arrow.type.Float64Type]
NumChunks: 4
NumElements: 31
NumNulls: 3
>> C1.NumNulls
ans =
int64
3
```
### Are these changes tested?
1. Added a `NumNullsNoSetter` test case to `tChunkedArray.m`.
2. Updated `tChunkedArray/verifyChunkedArray` helper method to verify the
`NumNulls` property value is set to the expected value.
### Are there any user-facing changes?
Yes. `arrow.array.ChunkedArray` has a new public property called `NumNulls`.
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