operator [] method
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
V? operator [](Object? key) => super.value[key];