Overload/override interactions

[tethal]

Consider:

class Base {

   f(int x) {
       printf("int  version\n");
   }

   f(number x) {
       printf("number version\n");
   }

   b() {
       f(1);
   }

   c() {
       f(1.1);
   }
}

class Derived inherits Base {
   f(float x) {
       printf("float version\n");
   }
}

Derived d();
d.b();
d.c();

Output:

float version
float version

The float version in Derived seemingly overrides both int and number versions of Base, though the `number version can still be called:

d.f(1.1n);

So it does not override them completely. This can get messy with multiple inheritance:

class B1 {
  f(float x) {
    printf("float version in B1\n");
  }

  z() {
    print("z() in B1\n");
  }
}

class B2 {
  f(int x) {
    printf("int version in B2\n");
  }

  x() {
    f(1);
  }

  z() {
    print("z() in B2\n");
  }
}

class D inherits B1, B2 {
}

D d();
d.x();
d.z();

Output:

float version in B1
z() in B1