GH-18652: [C++] Enhance arrow::internal::call_traits to support function pointers #48909
+98
−16
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Rationale for this change
The
call_traitsutility only supported lambdas and functors, but not function pointers. This prevented simplifying code likefut.Then([](T x) { return Func(x); })tofut.Then(Func), as described in GH-18652.What changes are included in this PR?
arrow::internal::call_traitsincpp/src/arrow/util/functional.hAre these changes tested?
Yes, I ran all existing tests locally.
Are there any user-facing changes?
No.