operator [] method - Map class - dart:core library (original) (raw)

description

operator [] abstract method

V? operator [](

1. 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

V? operator [](Object? key);