code: def lookup_name_fast(self, name):
          
  
          if name in self.__names:
              return self.__names[name]
  
          count = self.__get_count_cached()
          lo = 0
          hi = count
          while lo < hi:
              mid = (lo + hi) // 2
              if self.__get_name_cached(mid) < name:
                  lo = mid + 1
              else:
                  hi = mid
  
          if lo != count and self.__get_name_cached(lo) == name:
              return self.__get_info_cached(lo)
docs: Might return a struct