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Is there a way to prevent creating objects on heap?

Dec 12th, 2007

Yesterday I saw a question that was asking to prevent creating objects on heap.

After some thoughts, I came out the following:

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class Foo
{
public:
    Foo(const Foo& f) {}
    static Foo getAnInstance()
    {
        return Foo();
    }
private:
    Foo() {}
};
class Foo
{
public:
    Foo(const Foo& f) {}
    static Foo getAnInstance()
    {
        return Foo();
    }
private:
    Foo() {}
};

But this can only guarantee the first object is on stack and it can’t go further because there is a public copy ctor.

I haven't seen the point of the question, but it's fun to think about; so my question: Is there a way to do so?