isEmpty property
bool isEmptyReturns true if there are no elements in this collection.
May be computed by checking if iterator.moveNext() returns false.
Source
bool get isEmpty {
return (identical(_sentinel._nextLink, _sentinel));
}
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-collection/DoubleLinkedQueue/isEmpty.html