Re: [Boost-users] [Bind] Is this how to write it?

Subject: Re: [Boost-users] [Bind] Is this how to write it?
From: Ovanes Markarian (om_boost_at_[hidden])
Date: 2010-03-23 12:16:03

On Tue, Mar 23, 2010 at 2:19 PM, Robert Jones <robertgbjones_at_[hidden]>wrote:

>
> Thanks Ovanes - I'm sure you will understand that my real code is a bit
> more
> complicated then doubling ints! Since both bind and lambda  are pretty much
> superceded by phoenix now, perhaps you could also supply the phoenix
> version?
>
> As far as I know boost::phoenix is not an officially released boost lib. It
is still part of boost::spirit library. There is no top level reference to
it. So I would not consider it for now to be a replacement for bind and
lambda. It might become, but don't rely on that. ;) Anyway here the
rewritten example:

#include <boost/spirit/home/phoenix/core.hpp>
#include <boost/spirit/home/phoenix/scope.hpp>
#include <boost/spirit/home/phoenix/operator.hpp>
#include <boost/spirit/home/phoenix/function.hpp>

#include <algorithm>
#include <vector>
#include <iterator>
#include <iostream>

using namespace std;
using namespace boost;
using namespace boost::phoenix;
using namespace boost::phoenix::arg_names;
using namespace boost::phoenix::local_names;

namespace ph = boost::phoenix;

int main( )
{
  vector< int > v;
  // generate vector values
  int i=0;
  generate_n(back_inserter(v), 100, ++ph::ref(i));

  //create the output iterator
  ostream_iterator<int> oiter(cout, ",");
  copy(v.begin(), v.end(), oiter);
  cout << endl;

  // double each value in the vector
  for_each(v.begin(), v.end(), arg1*=2);
  copy(v.begin(), v.end(), oiter);
  cout << endl;
}

Regards,
Ovanes