[Dart] #2.5 Sets

var numbers = {1,2,3,4};
//Set <int>

Set <int> numbers = {1, 2, 3, 4};

//values in Set are all Unique. values in List don't have to be Unique.

List <int> numbers2 = [1, 2, 3, 4, 1, 1, 1];