Function JoinStringLikes

cpp/src/arrow/util/string.cc:127–138

template <typename StringLike>
static std::string JoinStringLikes(const std::vector<StringLike>& strings,
                                   std::string_view delimiter) {
  if (strings.size() == 0) {
    return "";
  }
  std::string out = std::string(strings.front());
  for (size_t i = 1; i < strings.size(); ++i) {
    out.append(delimiter.begin(), delimiter.end());
    out.append(strings[i].begin(), strings[i].end());
  }
  return out;
}

std::string JoinStrings(const std::vector<std::string_view>& strings,
                        std::string_view delimiter) {