liurenjie1024 commented on issue #5701:
URL: https://github.com/apache/arrow-rs/issues/5701#issuecomment-2084413533

   > Is https://docs.rs/arrow-array/latest/arrow_array/struct.Scalar.html 
perhaps what you are looking for?
   
   Not quite same. Here is the case, when we want to convert iceberg predicate 
to `ArrowPredicateFn`, say `a < 1`, for some reason here `a` is a constant, 
e.g. `NULL`, we can always return true. But `ArrowPredicateFn` requires to 
return an `BooleanArray`.


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