length property Null safety

int length

Returns the number of elements in this.

Counting all elements may involve iterating through all elements and can therefore be slow. Some iterables have a more efficient way to find the number of elements.


int get length => _base.length;
void length=(int newLength)

Changes the length of this list.

The list must be growable. If newLength is greater than current length, new entries are initialized to null, so newLength must not be greater than the current length if the element type E is non-nullable.


set length(int newLength) {
  _base.length = newLength;