bkietz commented on a change in pull request #8894:
URL: https://github.com/apache/arrow/pull/8894#discussion_r552837218
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File path: cpp/src/arrow/compute/kernels/util_internal.h
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@@ -50,6 +54,12 @@ int GetBitWidth(const DataType& type);
// rather than duplicating compiled code to do all these in each kernel.
PrimitiveArg GetPrimitiveArg(const ArrayData& arr);
+// Augment a unary ArrayKernelExec which supports only array-like inputs with
support for
+// scalar inputs. Scalars will be transformed to 1-long arrays which are
passed to the
+// original exec. This could be far more efficient, but instead of optimizing
this it'd be
+// better to support scalar inputs "upstream" in original exec.
Review comment:
Will do
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