remove method
Removes key
and its associated value, if present, from the map.
Returns the value associated with key
before it was removed.
Returns null
if key
was not in the map.
Note that some maps allow null
as a value,
so a returned null
value doesn't always mean that the key was absent.
final terrestrial = <int, String>{1: 'Mercury', 2: 'Venus', 3: 'Earth'};
final removedValue = terrestrial.remove(2); // Venus
print(terrestrial); // {1: Mercury, 3: Earth}
Implementation
@override
V? remove(Object? key) => _store.remove(_serializeKey(key));