How is the list data structure implemented in Dart?

In Dart language, the data structure "list" is implemented through the List class, which represents an ordered collection of elements. List in Dart is a dynamic array supporting index access, addition, removal, and other operations.

Lists can be of fixed length (List.filled) and mutable (regular List).

Example of creating and using a list:

void main() {
  List<int> numbers = [1, 2, 3]; // mutable list
  numbers.add(4); // adding an element
  print(numbers[0]); // index access, will output 1

  List<String> fixedList = List.filled(3, ""); // fixed size
  fixedList[0] = "a";
  print(fixedList);
}

Internally, List is implemented as a dynamic array, which expands when necessary by copying data into a new, larger array. This provides fast index access and efficient appending at the end.