first property
override
The first element.
Throws a StateError if this is empty.
Otherwise returns the first element in the iteration order,
equivalent to this.elementAt(0).
Implementation
E get first => _sentinel._nextLink!.element;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 => _sentinel._nextLink!.element;