(C++) Creates a new vector from a generic array and a predicate, like JS's filter

filterArray.cc

template <typename Array, typename Predicate>
auto filterArray(Array arr, Predicate p) {
  using arrElemType = typename std::remove_reference<decltype(arr[0])>::type;
  auto result = std::vector<arrElemType>();
  for (const auto el : arr) {
    if (p(el)) result.push_back(el);
  }

  return result;
}