quinnj commented on issue #384:
URL: https://github.com/apache/arrow-julia/issues/384#issuecomment-1588482725

   We recently updated the `Arrow.List` type to return a `SubArray` into the 
underlying data array; does that help your overall issue here w/ the 
allocations?
   
   Yeah, we could potentially check the validitybitmap to see if there are any 
missings before building the eltype, but it does make me a tad nervous for some 
unrelated side effects it might introduce.
   
   I'd say let's go for a PR and then we can take a look at how much work this 
would actually be.


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