code: function nth(list, indexNum) {
      if (arguments.length == 1) {
        // Manually currying
        indexNum = list;
        return (list) => nth(list, indexNum);
      }
  
      if(indexNum >= 0) {
        return list[+indexNum]
      };
      return [...list].reverse()[list.length+indexNum];
    }
docs: Returns the nth value at the specified index.
  If index is negative, it returns value starting from the right
  @param list the array to be operated on
  @param indexNum the index number of the value to be retrieved