Re: Question about polymorphism (or so I believe)
Aaron wrote:
On Jun 8, 1:55 pm, "Victor Bazarov" <v.Abaza...@comAcast.net> wrote:
Aaron wrote:
I want to build two abstract base classes.
1) Game
2) Position
The Game object represents a boardgame in its entirety and the
Position object represents individual game states. The Game object
will contain an array of Position objects representing the history
of the game. Each specific game will be expressed as a derivative
of these two classes. What I want to do is declare the base class
array in such a way that the derived classes don't have to
redeclare this array every time to the correct type.
--SNIP--
If you're looking to create a "polymorphic" container (or a container
of objects that you could use polymorphically), then you need to
store _pointers_ to the base class in that vector. If you just
store the base class objects, you will slice all the relevant parts
when trying to place the derived objects into that vector.
So this is where the whole void pointer thing comes in?
*Void* pointer? Definitely not. It has to be a pointer to the base
class.
V
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