operator [] method

@override dynamic operator [](Object? key)

The value for the given key, or null if key is not in the map.

Some maps allow null as a value. For those maps, a lookup using this operator cannot distinguish between a key not being in the map, and the key being there with a null value. Methods like containsKey or putIfAbsent can be used if the distinction is important.

Implementation

@override
dynamic operator [](Object? key) {
  if (key is! String) {
    if (key is int) {
      return _data[key];
    }
    return null;
  }

  final index = _result._calculatedIndexes[key];
  if (index == null) return null;

  return columnAt(index);
}