findepi commented on PR #16842:
URL: https://github.com/apache/datafusion/pull/16842#issuecomment-3097009055

   This is POC only for now.
   @alamb @kosiew @timsaucer PTAL and let me know if you agree with the 
direction.
   
   Note the PR goals:
   
   - reduce complexity of existing code, by deriving `ScalarUDFImpl::equals` 
and `ScalarUDFImpl::hash_code` from `PartialEq` and `Hash` implementations 
(same for `AggregateUDFImpl` and `WindowUDFImpl`)
   
   - if we decide to remove default implementations of `ScalarUDFImpl::equals` 
and `ScalarUDFImpl::hash_code` 
(https://github.com/apache/datafusion/issues/16677), something like this would 
be even more valuable. If we decide to keep them, it's still a good change.


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