Re: [boost] [parameter] Individually applying parameters.

From: Rene Rivera (grafik.list_at_[hidden])
Date: 2006-01-25 19:46:40

Rene Rivera wrote:
> David Abrahams wrote:
>> Rene Rivera <grafik.list_at_[hidden]> writes:
>>
>>> Before I go writing a bunch of code... Is there a way to apply the
>>> parameters of an ArgumentPack individually to a function?
>>>
>>> What I need/want is to be able, through Boost.MPL, to apply each
>>> argument in the ArgumentPack to a single function based of the keyword
>>> type. For example:
>>>
>>> struct A
>>> {
>>>   template <typename Keyword, typename Value>
>>>   void SetArgument( Value & v );
>>> };
>>>
>>> template <typename ArgPack>
>>> void setter( A & a, ArgPack & p )
>>> {
>>>   // for each arg in p:
>>>   //   a.SetArgument<arg::key_type>(arg.value)
>>> }
>>>
>>> Or equivalent thereof, without knowing ahead of time what the possible
>>> argument keywords and values are. I did some minor looking in the
>>> parameter code but didn't see anything obvious that already does this.
>> It sounds to me like you want a parameter::for_each that can iterate
>> the ArgumentPack.  Is that accurate?
> 
> Yes! Exactly.

PS. Of course if an ArgumentPack also modeled an MPL Forward Sequence it 
would be peachy ;-) Perhaps an adapter that provides such a model from 
the arg_list?

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