dart extending list code example

Example: dart extending list

import 'dart:collection';

class MyCustomList extends ListBase {
  final List l = [];
  
  set length(int newLength) {
    l.length = newLength;
  }

  int get length => l.length;

  E operator [](int index) => l[index];

  void operator []=(int index, E value) {
    l[index] = value;
  }
}