Wes McKinney created ARROW-8991:
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             Summary: [C++][Compute] Add scalar_hash function
                 Key: ARROW-8991
                 URL: https://issues.apache.org/jira/browse/ARROW-8991
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
            Reporter: Wes McKinney
             Fix For: 1.0.0


The purpose of this function is to compute 32- or 64-bit hash values for each 
cell in an Array. Hashes for nested types can be computed recursively by 
combining the hash values of their children



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