tustvold commented on code in PR #4484:
URL: https://github.com/apache/arrow-rs/pull/4484#discussion_r1257281899


##########
arrow-cast/src/cast.rs:
##########
@@ -3680,6 +3680,58 @@ fn cast_primitive_to_list<OffsetSize: OffsetSizeTrait + 
NumCast>(
     Ok(list_array)
 }
 
+fn build_list_array_with_data_type<OffsetSize: OffsetSizeTrait>(

Review Comment:
   Could we perhaps use 
https://docs.rs/arrow-buffer/latest/arrow_buffer/buffer/struct.OffsetBuffer.html#method.from_lengths
 and 
https://docs.rs/arrow-array/latest/arrow_array/array/struct.GenericListArray.html#method.new
 instead of the unsafe ArrayDate?



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