On 2016-02-03 13:29:15 +0000, anonymous said:
Still missing "class". I know I'm being pedantic, but if you're being
sloppy here, how do I know that you're not being sloppy where it
matters?
You are right, sorry. I was to focused on the problem part...
If anything, you should be casting between Value* and BaseOperator*
(both pointer types) if you want to do something with pointers.
I tried this, but that doesn't work either.
Yeah, you can't check if the downcast succeeded this way. Casts between
pointers always succeed (and then fail horribly at run-time).
Aha, that's my missing link. I didn't know that and it makes it all clear.
IMO that's a not to underestimate trap. Since I can use the . notation
instead of -> when using pointers, I would have expected that casting
will work the same with both variants as well...
But am I not getting a copy then? I want to avoid copying objects as
much as possible.
No, you're not getting a copy. Classes are reference types. That means,
variables of class types are references already. They're pointers in
disguise.
Ok. Seems I was really confused. Thanks a lot.
--
Robert M. Münch
http://www.saphirion.com
smarter | better | faster
