[Mono-list] Re: Final method in C# (as the final keyword in Java)
Ympostor
ympostor at clix.pt
Tue May 30 10:09:44 EDT 2006
Raja R Harinath escribió:
>> Son oSon = new Son();
>> Son.DontOverrideMe();
Typo here, the correct would be:
oSon.DontOverrideMe();
>> The result would be "unruly son".
>
> OK. That's what the 'new' keyword does.
>
>> I don't want that, I want that all derived classes of Father return "I
>> am acting as a father" to the console, and I want the compiler to
>> complain if a derived class wants to hide or override the method.
>
> There are two ways to respond.
>
> 1. You can't -- since C# has a special modifier 'new' that allows
> child classes to "escape" the tyranny of parent classes :-)
>
> 2. Why do you care? If you're using DontOverrideMe polymorphically
> through a 'GrandFather' or 'Father' reference, you'll get the right
> behaviour even with a 'Son' object.
>
Thanks Hari, that clarifies all a bit more!
Anyway, I have more questions if you don't mind :)
1) How can I call DontOverrideMe by a the Father reference?
2) How can I do the last thing questioned, but with reflection? (I mean,
instead of oSon.Method, with something like oSon.GetType().GetMethod(...)...
3) How can I avoid declaring a GrandFather class (now I am using it
because otherwise I am unable to use the sealed keyword in a method).
Thanks again.
Regards.
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