ik wrote:
Assume I have the same API calls for different things in classes, and
the only difference me as someone who uses this API is to use the
right class, but all of the other code is not changed, except specific
calls ...
You would not only need to know the "right" class, but also the right
parameter set belonging to the call.
This sort of screws the whole object-orientation.
Now I know that Parent do not know anything about a child, but can I
make it "virtual" in the way the parameters is created in the child
way, and do it as part of the abstract ?
You can do that by using a more generic parameter (array of const, or
even a class type), but what's the point? A caller still needs to know
the correct parameter set and the callee needs to evaluate if it has
given the correct one for its particular instance.
That's like implementation "generics" as case-statement:
case Argument of
1: Do_1;
2: Do_2;
...
You can do that, but I would strongly recommend, you don't. It's stupid,
believe me. Everytime you add something, you have to reimplement all the
checks. I've seen such code. It just doesn't work out.
Vinzent.
_______________________________________________
fpc-devel maillist - [email protected]
http://lists.freepascal.org/mailman/listinfo/fpc-devel
