zanmato1984 commented on code in PR #43292:
URL: https://github.com/apache/arrow/pull/43292#discussion_r1680460774
##########
cpp/src/arrow/compute/kernels/vector_selection_test.cc:
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@@ -1101,67 +1102,277 @@ TEST(TestFilterMetaFunction, ArityChecking) {
// ----------------------------------------------------------------------
// Take tests
+//
+// Shorthand notation (as defined in `TakeMetaFunction`):
+//
+// A = Array
+// C = ChunkedArray
+// R = RecordBatch
+// T = Table
+//
+// (e.g. TakeCAC = Take(ChunkedArray, Array) -> ChunkedArray)
+//
+// The interface implemented by `TakeMetaFunction` is:
+//
+// Take(A, A) -> A (TakeAAA)
+// Take(A, C) -> C (TakeACC)
+// Take(C, A) -> C (TakeCAC)
+// Take(C, C) -> C (TakeCCC)
+// Take(R, A) -> R (TakeRAR)
Review Comment:
Just curious, why there isn't a `TakeRCR` overload?
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