Method Visit

cpp/src/arrow/compute/kernels/hash_aggregate.cc:1174–1179

struct GroupedFirstLastFactory {
  template <typename T>
  enable_if_physical_integer<T, Status> Visit(const T&) {
    using PhysicalType = typename T::PhysicalType;
    kernel = MakeKernel(std::move(argument_type), FirstLastInit<PhysicalType>,
                        /*ordered*/ true);
    return Status::OK();
  }

  Status Visit(const FloatType&) {
    kernel =