first property Null safety

E first

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).

Implementation

@override
E get first => _values.first;
void first=(E value)

Updates the first position of the list to contain value.

Equivalent to theList[0] = value;.

The list must be non-empty.

Implementation

@override
set first(E value) {
  _values.first = value;
  notifyListeners();
}