Re: [boost] Boost Exception and support for cloning

From: Corrado Zoccolo (czoccolo_at_[hidden])
Date: 2007-11-06 17:00:27

On 10/23/07, Mathias Gaunard <mathias.gaunard_at_[hidden]> wrote:
>
> Josh Napoli wrote:
> >> This can be done by adding a clone() virtual function to
> > boost::exception.
> >
> > Since the clone function is just a stopgap until 0x
>
> C++0x has virtual constructors?

Cloning can be supported non-intrusively, without virtual constructors or
virtual clone() functions.
You can have a look at the Optional Polymorphic Value object with Small
Object optimization Library in the vault: *http://tinyurl.com/2og6st*
The thread discussing it is:
http://archives.free.net.ph/thread/20071102.211935.ab0db275.en.html

The only requirement you need is that all your concrete classes derive from
a know base class, and you get cloning and the small object optimization for
free.

Corrado

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-- 
__________________________________________________________________________
dott. Corrado Zoccolo                          mailto:zoccolo_at_[hidden]
PhD - Department of Computer Science - University of Pisa, Italy
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