[boost] Re: Boost.dynamic_any vs Boost.Function

From: Alexander Nasonov (alnsn-mycop_at_[hidden])
Date: 2003-02-19 04:38:02

Douglas Paul Gregor wrote:
> 
> On Tue, 18 Feb 2003, Alexander Nasonov wrote:
> 
>> With a help of boost::dynamic_any::call operation (not yet implemented)
>> it's possible to use boost::dynamic_any::any instead of Boost.Function.
>> Though this new solution is less specialized and probably slower then
>> Boost.Function it has one advantage demonstrated in the example below:
>>
>>
>> typedef boost::dynamic_any<
>>     boost::mpl::list<
>>         boost::dynamic_any::call<void (int &)>,
>>         boost::dynamic_any::call<void (double &)>
>>     >
>> > flexible_function; // 2 in 1!
> 
> That's great! 'Tis a good week for dynamic polymorphism.

There is the same code bloat problem as in early Boost.Function release. 
Unfortunately, I have to use polymorphic classes to store a value because 
they are essential  parts of extraction mechanism. So, I can only recommend 
to use this feature only when it's _really_ necessary.

-- 
Alexander Nasonov
Remove - m y c o p from my e-mail address for timely response