tustvold commented on code in PR #7309:
URL: https://github.com/apache/arrow-rs/pull/7309#discussion_r2002127373
##########
arrow-array/src/builder/primitive_builder.rs:
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@@ -255,6 +255,41 @@ impl<T: ArrowPrimitiveType> PrimitiveBuilder<T> {
self.values_builder.append_slice(values);
}
+ /// Appends array values and null to this builder as is
+ /// (this means that underlying null values are copied as is).
+ ///
+ /// # Panics
+ ///
+ /// Panics if `array` and `self` data types are different
+ #[inline]
+ pub fn append_array(&mut self, array: &PrimitiveArray<T>) {
+ assert_eq!(
+ &self.data_type,
+ array.data_type(),
+ "array data type mismatch"
+ );
+
+ unsafe {
+ self.append_array_unchecked(array);
+ }
+ }
+
+ /// Appends array values and null to this builder as is
+ /// (this means that underlying null values are copied as is).
+ ///
+ /// # Safety
+ ///
+ /// `self` data type and `array` data type must be the same
+ #[inline]
+ pub unsafe fn append_array_unchecked(&mut self, array: &PrimitiveArray<T>)
{
Review Comment:
IMO once people are reaching for these sorts of APIs, I think it'd be better
they just use Vec directly
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