[boost] Re: Re: additional boost libraries?

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-07-26 03:13:09

John Torjo wrote:

> David Abrahams wrote:
> 
>> Vladimir Prus <ghost_at_[hidden]> writes:
>> 
>> 
>>>   boost::dll plugin("foo");
>>>   plugin["bar"].as<void (void)>();
>>>
>>>or something trickier, like:
>>>
>>>   - calling C++ functions:
>>>
>>>        plugin.call<void (void)>("bar") -- no need for "extern "C"
> 
> I love this! It would really be great!
> 
> How about something like
> plugin.func<void(void)>("some_func") returning a callable functor - some
> wrapper over boost::function, 

I think last message from Sven even suggests the syntax were you get
boost::function. And you don't need a wrapper, BTW, you can just bind
function to a functional object which can do what you ask below

> which 
> - will work as long as the plugin is in memory
> - will throw otherwise

Isn't it better to always keep the  plugin in memory?

> - eventually have a method for knowing if you can still call this function

Ah... this would need some wrapper over boost::function indeed.

- Volodya

> 
> I'd certainly have uses for this.
> 
> Best,
> John
> 
> 
>