Returns the first element.
Throws a StateError if this
is empty. Otherwise returns the first element in the iteration order, equivalent to this.elementAt(0)
.
E get first { _DoubleLinkedQueueEntry<E> firstEntry = _sentinel._nextLink; return firstEntry._element; }
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-collection/DoubleLinkedQueue/first.html