Re: [boost] [local] Help for the Alternatives section

Subject: Re: [boost] [local] Help for the Alternatives section
From: Michael Caisse (boost_at_[hidden])
Date: 2011-03-26 19:27:02

On 03/26/2011 03:19 PM, Lorenzo Caminiti wrote:
> Hello all,
>
> I am updating Boost.Local docs and I could use a some help in getting
> the Alternatives section right
> http://svn.boost.org/svn/boost/sandbox/local/libs/local/doc/html/boost_local/Alternatives.html
> .
>
> How can I program the following code (its local function and `factor`
> constant binding) using Boost.Phoenix, Boost.Lambda, and C++0x lambda
> functions? If you know, can you please reply with the actual code?
>
>    

Phoenix version:

#include <boost/phoenix/phoenix.hpp>
#include <boost/phoenix/statement.hpp>
#include <iostream>
#include <vector>
#include <algorithm>

int main() {
     double sum = 0.0;
     int factor = 10;

     using namespace boost::phoenix;
     using namespace boost::phoenix::placeholders;

     std::vector<double> v(3);
     v[0] = 1.0; v[1] = 2.0; v[2] = 3.0;
     std::for_each(v.begin(), v.end(), (
                   ref(sum) += factor * _1,
                   std::cout << "Summed: " << ref(sum) << "\n" )
        );
     return 0;
}

-- 
Michael Caisse
Object Modeling Designs
www.objectmodelingdesigns.com