DMD OSX / Segfault 11
Robert M. Münch via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Wed Feb 3 05:16:27 PST 2016
On 2016-02-02 19:03:04 +0000, anonymous said:
> This isn't valid D code at all, which makes it unnecessarily hard to
> understand what you mean.
Well, it should of course be:
BaseOperator: Value {
}
> A Value* is a pointer to a class reference. Unless you're doing
> something really funky with the pointer, casting it to a class type
> doesn't make sense.
>
> Casting between class types that have an inheritance relation, like
> Value and BaseOperator, does make sense (upcat/downcast).
Yes, that's what I need.
> 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.
> But you very seldom need pointers to class references. Just return
> Value from get, and cast to BaseOperator.
But am I not getting a copy then? I want to avoid copying objects as
much as possible.
--
Robert M. Münch
http://www.saphirion.com
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