Re: [boost] [DynamicAny] Feedback

Subject: Re: [boost] [DynamicAny] Feedback
From: joaquin_at_[hidden]
Date: 2011-03-04 01:55:07

Daniel Larimer escribió:
> I recently ran into a problem where I wanted to retrieve the value stored in a boost::any by casting to a base class.  Unfortunately, boost::any requires you cast out the exact type as that held.
>
> Boost.DynamicAny is a vairant on Boost.Any which provides more flexible dynamic casting of the underlying type. Whereas retreiving a value from Boost.Any requires that you know the exact type stored within the Any, Boost.DynamicAny allows you to dynamically cast to either a base or derived class of the held type.
> Boost.DynamicAny passes all of the same unit tests as Boost.Any, but additionally supports the following test:
> [...]
>

What's the trade-off? I mean, does Boost.DynamicAny use more memory than
Boost.Any, is it slower?

Thank you,

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

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