Re: [boost] [proto] Calculator Arity Transform and function varargs

From: Eric Niebler (eric_at_[hidden])
Date: 2007-08-27 12:37:54

(Sorry for the delay, I've been away on vacation.)

Felipe Magno de Almeida wrote:
> Hi,
> 
> I can't make it out how to do the arity transformation for
> proto::functions varargs too.
> Could anybody shed some light?

I think I may need more information about what you're trying to do. 
There is a (rather advanced) example of using the fold transform on a 
proto::function with varargs here: http://tinyurl.com/2l9srv. Does that 
help any? When dealing with varargs, the fold and reverse_fold 
transforms are especially handy because they iterate over the sequence 
of children nodes for you -- you don't have to worry about how many 
there are. So if you can express your transform using fold, it'll make 
life easier.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com
The Astoria Seminar ==> http://www.astoriaseminar.com