askoa commented on code in PR #3158:
URL: https://github.com/apache/arrow-rs/pull/3158#discussion_r1030326715
##########
arrow-array/src/builder/generic_list_builder.rs:
##########
@@ -143,6 +149,39 @@ where
GenericListArray::<OffsetSize>::from(array_data)
}
+ /// Builds the [`GenericListArray`] without resetting the builder.
+ pub fn finish_cloned(&self) -> GenericListArray<OffsetSize> {
+ let len = self.len();
+ let values_arr = self
+ .values_builder
+ .as_any()
+ .downcast_ref::<T>()
+ .unwrap()
+ .finish_cloned();
Review Comment:
I just copied from `finish` function. Do you know why it was coded this way
in `finish` function?
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