Re: Force creation of objects with new operator

Victor Bazarov <v.bazarov@comcast.invalid>
Thu, 30 Jun 2011 08:18:07 -0400
On 6/30/2011 7:19 AM, Alf P. Steinbach /Usenet wrote:

* Urs Thuermann, on 30.06.2011 11:48:

I have a class where I want objects to commit suicide by calling

delete this;

Therefore, I want to be sure that all objects are created only using
the new operator. I am thinking about making the constructor and
destructor private and adding a class function to call the constructor
like this:

class Foo {
static Foo *create(int foo) {
return new Foo(foo);
void destroy_yourself_when_done() {
delete this;
Foo(int foo) { ... }
~Foo() { ... }

void user()
Foo *f = Foo::create(0);
// do something with f

In the real code, the function destroy_yourself_when_done() is of
course more complex and commits suicide only when conditions are met
that the object is no longer needed.

Is this considered a clean approach?

No, not in my opinion.

Are there better ways?

I would instead make the destructor non-public.

The destructor *is* non-public.

Much less code, much easier.

Cheers & hth.,

- Alf

I do not respond to top-posted replies, please don't ask

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