scala: inheriting base class from type parameter

Question

Is that possible to create a type class based on type parameter by inheriting type parameter like in the code below?

I do suspect that this is fundamentally not possible as this is a scala limitation as functional language...

But if possible what I have to change in the code below??

class MyInt[T : Numeric]  extends T  {

}

Answer 1

It's not possible. You can extend a class (traits included), but you cannot extend a type , and T is a type .

Even if it were possible, what would it then mean to have MyInt[Int] (which is final), or MyInt[List[String]] (which is not a class) ? It would get quite complicated for the compiler very quickly.