How do I extend a List in Dart?

Question

I want to create a more specialized list in dart. I can\'t directly extend List. What are my options?

Answer 1

The answers to this are pretty outdated, and I'm in the process of doing this for my own project, so I thought I'd help some people out by posting a really clean answer that doesn't involve any overriding or implementing of things.

The quiver package has an extendable List class called DelegatingList that makes extending a list trivial.

class FruitList extends DelegatingList {
    final List _fruits = [];

    List get delegate => _fruits;

    // custom methods
}

Hopefully this helps someone who comes across this question like I did!