Multiple constraints in generic class

Question

How can I perform Multiple Constraints in Generic class in dart lang

class ClassA<T implements ClassB<T> & ClassC<T>>  {
}

Like C# Code

class EmployeeList<T> where T : Employee, IEmployee, System.IComparable<T>, new()
{
    // ...
}

Answer 1

That is not possible.

The best thing you can have is to make an abstract class that implement both interfaces at once, and use that as constraints instead.