[osg-users] META_object macro returning osg::Object* for cloneType and clone

Julien Valentin julienvalentin51 at gmail.com
Sun Nov 26 12:15:52 PST 2017

I don't understand your ex: 
If you clone a list of Object you'll get...a list of Object...you can't forsee their type...
Further why don't u static cast when you're sure of the return type?...

hartwigw wrote:
> Hi,
> if you have a list of pointer of derived classes from osg::Object and you would like to clone them you always have to cast them. And I like to prevent casts as often as possible.
> Example: if you clone a StateAttribute you get back a pointer to an Object although you know (and the compiler could also know) that the result is a StateAttribute.
> Cheers,
> Hartwig

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