removeWhere method
Removes all elements of this ValueNotifier's value that satisfy test
.
final charactersValueNotifier = <String>{'A', 'B', 'C'}.notifier;
characters.removeWhere((element) => element.startsWith('B'));
print(characters); // {A, C}
Implementation
@override
void removeWhere(bool Function(E element) test) =>
_updateOnAction(() => value.removeWhere(test));