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Subject: Re: [boost] [intrusive] rtti_base class proposition
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-10-22 11:04:11

Ireneusz Szpilewski wrote:
> Joel Falcou wrote:
> > you just have to have Cat and Dog inherit from
> > FactoryProduct and not
> > from an arbitrary cosmic base class that has no meaning in
> > the model.
> OK, lets call it boost::object :-).

You're missing the point. It isn't the name he's faulting. It's the use of a meaningless ABC just to add RTTI support. As I said before, you create an ABC that represents the root of a hierarchy for the given use case, not use a one-size-fits-all ABC. In this case, as Joel noted, Product is your ABC. Give it appropriate virtual functions and a virtual destructor and create collections of Products to your hearts content. Why would you need a container of Products and Organs (as in body parts) when one belongs to a factory and the other to a hospital? They are unrelated, so they shouldn't derive from a common base class.

Given the foregoing, there's no value in your RTTI ABC.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer, Core Software using std::disclaimer;
Susquehanna International Group, LLP

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