anchor.diff:      end.
   
   %% 部分更新数据，返回ok | notfound
  +update(Key, Data, {?MODULE, Table}) -> update(Table, Key, Data);
   update(Table, Key, Data1) ->
       Id = ss:to_binary(Key),
       init(Table),
  
positive.code:         [{_K, Result}|_] -> Result;
          [] -> notfound
      end.
  find(Table, Key) ->
      Id = ss:to_binary(Key),
      init(Table),
  
negative.code: %% 创建数据，返回{ok, Id}
  %% Data应为maps类型
  %% 自动插入创建和最后修改时间时间戳, 使用ISO标准格式
  create(Data, {?MODULE, Table}) -> create(Table, Data);
  create(Table, Data) ->
      {_, S, Ms} = now(),
      Id = ss:to_binary(io_lib:format("~B-~6..0B", [S, Ms])),
      create(Table, Id, Data).
  create(Key, Data, {?MODULE, Table}) -> create(Table, Key, Data);
  create(Table, Key, Data1) ->
      Id = ss:to_binary(Key),
      init(Table),
  