Why it is not possible to override mutable variable in scala?

Question

Why it is not possible to override mutable variable in scala ?

class Abs(var name: String){
}

class AbsImpl(override var name: String) extends Abs(name){
}
         


        

Answer 1

I believe that the intent was simply to set the value of the inherited var name. This can be achieved this way (without override var):

class Abs(var name: String){
}

class AbsImpl(name: String) extends Abs(name){
}

The ambiguity arises from the local var name: String in AbsImpl that is named after the inherited var name: String from Abs. A similar code, less syntactically ambiguous but also less elegant would be:

class Abs(var name: String){
}

class AbsImpl(name_value: String) extends Abs(name_value){
}