anchor.diff:        }
   
         var bogus = new File(path + _bdp);
  -      _$lines = bogus.readAsLinesSync();
  -      _$cnt = _$lines.length;
  +      _lines = bogus.readAsLinesSync();
  +      _cnt = _lines.length;
         _dataLoaded = true;
       }
   
       DateTime date = new DateTime.utc(year, month, day);
       var query = await _pool
  -        .prepare("insert into ${_$calTable} (date,hm,what) values (?, ?, ?)");
  -    String what = _$lines[_next(0, _$cnt - 2)];
  -    List parameters = [[date.millisecondsSinceEpoch, $h * 100, "${what}"]];
  +        .prepare("insert into ${_calTable} (date,hm,what) values (?, ?, ?)");
  +    String what = _lines[_next(0, _cnt - 2)];
  +    List parameters = [[date.millisecondsSinceEpoch, h * 100, "${what}"]];
       await query.executeMulti(parameters);
   
       return completer.complete;
  
positive.code: 
      if (!await _tableIsCreated()) {
        var querier = new QueryRunner(
            _pool, [" create table ${_$calTable} (${crtFields})"]);
        await querier.executeQueries();
        await _calCreateSampleData();
        return true;
  
negative.code: 
    Future<bool> _tableIsCreated() {
      Completer completer = new Completer();
      _pool.query("select * from ${_calTable}").then((result) {
        return completer.complete(true);
      }).catchError((e) {
        return completer.complete(false);
  