Wes McKinney created ARROW-4110:
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Summary: [C++] Do not generate distinct cast kernels when input
and output type are the same
Key: ARROW-4110
URL: https://issues.apache.org/jira/browse/ARROW-4110
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Wes McKinney
Fix For: 0.13.0
I side issue brought up by ARROW-4101 and ARROW-4102 is that the "identity
cast" is handled on a type-by-type basis. We should see if we can have a
"universal identity cast" and simplify things
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