A
Alfonso Morra
Is it possible to declare a class destructor as private?
K
Ken Wilson
Try it and see.
I would venture not though because the program would no longer be able
to call it.
Ken Wilson
"Coding, coding, over the bounding main()"
A
Alfonso Morra
I already did and found the answer (that's why I deleted the OP).Ken said:
Not necessarily true. This is a nested class that must not be accesibleI would venture not though because the program would no longer be able
to call it.
outside its parent contaner. The container object is declared a friend
and therefore has access to the nested classes private parts.
T
titancipher
True, but if the class/function were made a friend, it would have
access to the class's destructor.
access to the class's destructor.
K
Ken Wilson
Fair enough. I was thinking about making the nested class private to
the container and then the destructor could be made public.
Ken Wilson
"Coding, coding, over the bounding main()"
M
Mercator
Ken said:
There exists a well-known compiler (from a very big company) that
ignores the private-ness of destructors.
I would venture not though because the program would no longer be able
to call it.
Hint: friendship
J
John Carson
Mercator said:
If it is the company that I am thinking of, then I am unable to reproduce
this. In particular, the following code won't compile on versions 6.0, 7.1
and 8.0 Beta 2 (I haven't tested 7.0):
class Test
{
~Test(){}
};
int main()
{
Test t;
}
M
Mercator
John said:
You are right. I confused it with a problem I had some time ago using a
private operator delete.
?
=?iso-8859-1?q?Stephan_Br=F6nnimann?=
See Scott Meyers, More effective C++, item 27.
If you want to force the creation of an object on the heap,
then you use a private destructor and provide a public
member function destroy.
class Demo {
~Demo() {} // private
public:
void destroy() const
{
delete this;
}
};
Now the following won't work:
void foo()
{
Demo d;
}
regards, Stephan
If you want to force the creation of an object on the heap,
then you use a private destructor and provide a public
member function destroy.
class Demo {
~Demo() {} // private
public:
void destroy() const
{
delete this;
}
};
Now the following won't work:
void foo()
{
Demo d;
}
regards, Stephan