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Calling a method with this pointer from an inherited class becomes const


Calling a method with this pointer from an inherited class becomes const

By : Bill Tonnesen
Date : October 20 2020, 11:12 AM
hope this fix your issue The problems in the code you posted are:
You use C before you declare it. B::doSomething is trying to call a private C constructor. B::doSomething is not missing the return type and argument list. You're missing semicolons to end the class.
code :


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calling virtual function through pointer to const base class

calling virtual function through pointer to const base class


By : NTahaE
Date : March 29 2020, 07:55 AM
wish help you to fix your issue The signature of the function to be called is determined on call site based on the static type of the pointer. The correct overrider of this signature is then chosen at runtime.
In other words, if you have this:
code :
const A *d;
d->f(1);
A *e;
e->f(1);
Can't assign a pointer to method from an inherited class

Can't assign a pointer to method from an inherited class


By : Jim Scott
Date : March 29 2020, 07:55 AM
should help you out Pointer-to-member conversions work opposite to normal pointer conversion. You can convert a pointer to derived class into a pointer to base class, but not vice versa. You can convert a pointer-to-member of base class to pointer-to-member of derived class, but not vice versa.
Always think whether the conversion is valid.
Calling inherited class method from instance method in Ruby

Calling inherited class method from instance method in Ruby


By : Daniel Kosonk Sebela
Date : March 29 2020, 07:55 AM
this will help It won't work, because the instance of C is not kind_of?(B.singleton_class).
In ruby, a protected method can be called within the context of an object which is kind_of? the class which defines the method, with an explicit receiver which is also kind_of? the class which defines the method.
Will a subclass use a super or sub class method when calling an inherited method (Java)

Will a subclass use a super or sub class method when calling an inherited method (Java)


By : Kristóf Gyurácz
Date : March 29 2020, 07:55 AM
hope this fix your issue It will call the one in the subclass. You could design an experiment to test for yourself:
code :
class Super {
    void a() { System.out.println("super implementation"); }
    void b() { System.out.println("calling a()..."); a(); }
}


class Sub extends Super {
    void a() { System.out.println("sub implementation"); }
}


public class Main {
    public static void main(String[] args) {
        Sub x = new Sub();
        x.b();
        // Prints:
        //   calling a()...
        //   sub implementation
    }
}
How to replace a pointer to a pointer to a method in a class of my method inherited from the system class?

How to replace a pointer to a pointer to a method in a class of my method inherited from the system class?


By : ございます
Date : March 29 2020, 07:55 AM
like below fixes the issue When the target class is derived from MarshalByRefObject, then the ReplaceInner (for normal methods) stops working but ReplaceVirtualInner (for overridden methods) is ok.
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