Re: [Quantlib-dev] Handle & type casting

[Luigi B. <lui...@gm...>]

On Thu, 2008-02-28 at 13:06 +0000, Simon Ibbotson wrote:
> If you have a handle to any Observable -  Handle<T1> but you need a
> handle to a derived type Handle<T2>, I can find no way of currently
> doing this without going through the process of 
> a) Getting the underlying boost::shared_ptr<T1>
> b) Using boost::dynamic_pointer_cast to get a boost::shared_ptr<T2>
> c) Creating a Handle<T2> using the new shared_ptr<T2>.
> 
> Unfortunately, this means that if the original Handle<T1> points to a
> new object, the Handle<T2> does not point to this updated object.

Ok. Let's say you keep the Handle<T2> connected to the original Handle.
What happens if the new object is not a T2?

Luigi


-- 

Better to have an approximate answer to the right question than a 
precise answer to the wrong question. 
-- John Tukey as quoted by John Chambers