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Join Date: Oct 2005

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Reputation: manishgurnaney is an unknown quantity at this point

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manishgurnaney manishgurnaney is offline

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C++

Oct 17th, 2005

How Can i Create a final class in C++?
i have tried by making constructors private . but i want to know an efficient way of doing this?

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Join Date: Aug 2005

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Reputation: Daishi is an unknown quantity at this point

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Daishi

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Re: C++

Oct 17th, 2005

A final class? You mean like a final variable in Java? I haven't heard of that before in C++. But to answer your question about making private constructors, the only reason why I could see you doing something like that would be in this case:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
class Something {
private:
	Something();
 
	static list<Something *> somethings;
public:
	static Something *New() {
		Something *something = new Something;
		somethings.push_back(something);
		return something;
	}
	//...
};
 
//  ...
//  In code somewhere
 
Something *something = Something::New();
class Something {
private:
	Something();

	static list<Something *> somethings;
public:
	static Something *New() {
		Something *something = new Something;
		somethings.push_back(something);
		return something;
	}
	//...
};

//  ...
//  In code somewhere

Something *something = Something::New();

That way you could possibly do a kind of memory management..not sure how that ties in with a 'final' class, though.

-Fredric

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Narue

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Code Goddess

Re: C++

Oct 17th, 2005

>How Can i Create a final class in C++?
A "final" class in Java is a class that cannot be derived from, it's quite literally a concrete class that will never have subclasses. In C++ you basically can't do it without making the class harder to use. Are you doing this for the wrong reasons?

I'm here to prove you wrong.

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