OOP Inheritance - Method Overriding etc

General
1

So, I’ve never come across this in Xojo (not sure if in any other language actually).

The behaviour I’m encountering is the following:

Child class’ MethodC calls Super.MethodA. So, I expected “This is the Father” to show (since I’m calling the Super and I thought it would call the MethodB in the same level of the hierarchy) but “This is the Child” shows instead. Is this the normal OOP behavior and I never came across or languages diverge on this behavior?

PS Only MethodB is overriden in ChildClass.

FatherClass
- MethodA {
    Self.MethodB
}
-MethodB {
   MsgBox("This is the Father")
}
ChildClass
- MethodC {
   Super.MethodA
}

- MethodB {
   MsgBox("This is the Child")
}
2

No, this is correct behavior in any OOP language.

MethodB is overridden in ChildClass, so any instance of ChildClass will call this method – via MethodA – and show “This is the Child”. Which is correct as any instance of ChildClass should of course show “This is the Child”. Google for “Virtual function” and “Polymorphism”.

3

This looks normal to me for any OOP language. Dispatch is not to the same level of the hierarchy. Each new method dispatch starts at the first found child implementation.

4

Ok, that’s what I found out as well. Never really had paid attention…

Thanks