Inserting different types of objects into one queue
I wish to place objects of class B and class C into one queue. The queue, say class Queue, is a class template. Further, B and C are derived from class A. Can I say something like:
or do I have to cast objects of B and C to type A before insertion. If so how do I cast objects from one type to another at run time.
Also, if the above is possible how do I, when removing objects from the queue, know which type of object I am removing.
I would be grateful for all help
I would make a union or a class with pointers to all the classes and make a Q of that.
couldn't you "cast" them at time of creation of the objects?
A* bob = new Bob;
A* cat = new Cat;
now the object pointer is of the supertype A but are constructed as objects of the child classes .. and they can be added to the queue ...
Last edited by nspils; 01-23-2006 at 07:51 PM.
Actually, what you're looking for is a heterogeneous conatiner. I discussed it recently:
The pointer cast option is applicable only if you a hierarchy of classes, i.e., B is derived from C
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