Свойство isEmpty

bool isEmpty

override

Отсутствие пар «ключ/значение» в карте.

Реализация

bool get isEmpty => keys.isEmpty;

© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.19.6/dart-collection/MapMixin/isEmpty.html