*<Null safety>*
int length
@override int get length => (_tail - _head) & (_table.length - 1);
length= (int value)
override
@override set length(int value) { if (value < 0) throw RangeError('Length $value may not be negative.'); if (value > length && null is! E) { throw UnsupportedError( 'The length can only be increased when the element type is ' 'nullable, but the current element type is `$E`.'); } var delta = value - length; if (delta >= 0) { if (_table.length <= value) { _preGrow(value); } _tail = (_tail + delta) & (_table.length - 1); return; } var newTail = _tail + delta; // [delta] is negative. if (newTail >= 0) { _table.fillRange(newTail, _tail, null); } else { newTail += _table.length; _table.fillRange(0, _tail, null); _table.fillRange(newTail, _table.length, null); } _tail = newTail; }