length property

int length
inherited

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.

Implementation 

int get length => delegate.length;
void length= (int newLength)
override

Changes the length of this list.

If newLength is greater than the current length, entries are initialized to null.

Throws an UnsupportedError if the list is fixed-length.

Implementation 

void set length(int newLength) {
  delegate.length = newLength;
}