How to check if class instance variable was actually initialized?

[Darkhog]

How can I do that? Do I check for nil equality or something? I need that for destructor in one of my classes - some of class variables may or may not be created when class is destroyed (they're created as necessary) and I need safe way to tell if they were created or not and if they were, destroy them.

[imcold]

Assign nil to them in class constructor and check for nil (or use Assigned()) in destructor.

[SilverWarior]

How can I do that? Do I check for nil equality or something? I need that for destructor in one of my classes - some of class variables may or may not be created when class is destroyed (they're created as necessary) and I need safe way to tell if they were created or not and if they were, destroy them.

That is why SomeClass.Free; is there. When you call SomeClass.Free it automatically checks to see if the calss was created and Destroys it if it Was.

[Delphius]

It is worthwhile to also consider the fact that something is free, and another thing is set to nil.
Hence, there is also the procedure FreeAndNil.

Sorry for my poor english.

Regards,