devanbenz opened a new issue, #10150:
URL: https://github.com/apache/arrow-rs/issues/10150
### Is your feature request related to a problem or challenge?
Arrow C++ has a product aggregate, arrow-rs has sum/sum_checked but no
product equivalent. Add product and product_checked to
`arrow-arith/src/aggregate.rs`, mirroring sum.
C++ (exists today)
```
arrow::Int64Builder b;
b.AppendValues({1, 2, 3, 4, 5});
auto arr = b.Finish().ValueOrDie();
auto out = arrow::compute::CallFunction("product", {arr});
// out.scalar() == 120
```
### Describe the solution you'd like
```
/// Returns the product of values in the primitive array.
/// Returns `None` if the array is empty or all-null.
pub fn product<T: ArrowNumericType>(array: &PrimitiveArray<T>) ->
Option<T::Native> {
aggregate::<T::Native, T, ProdAccumulator<T::Native>>(array)
}
/// Overflow-checking variant of [`product`].
pub fn product_checked<T: ArrowNumericType>(
array: &PrimitiveArray<T>,
) -> Result<Option<T::Native>, ArrowError> { /* mirror sum_checked/ }
```
### Describe alternatives you've considered
Not implementing product compute kernel.
### Additional context
_No response_
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