length property

@override int length

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. These must override the default implementation of length.

Implementation

@override
int get length => _base.length;

@override void length=(int newLength)

Throws an UnsupportedError; operations that change the length of the list are disallowed.

Implementation

@override
set length(int newLength) => _throw();