Function MakeMapIterator

cpp/src/arrow/util/iterator.h:460–462

template <typename Fn, typename From = internal::call_traits::argument_type<0, Fn>,
          typename To = internal::call_traits::return_type<Fn>>
Iterator<To> MakeMapIterator(Fn map, Iterator<From> it) {
  return Iterator<To>(MapIterator<Fn, From, To>(std::move(map), std::move(it)));
}

/// \brief Like MapIterator, but where the function can fail.
template <typename Fn, typename From = internal::call_traits::argument_type<0, Fn>,