[Boost-users] [phoenix][phoenix3][MPL] incompatibility between MPL and Phoenix3

Subject: [Boost-users] [phoenix][phoenix3][MPL] incompatibility between MPL and Phoenix3
From: alfC (alfredo.correa_at_[hidden])
Date: 2010-11-28 03:15:04

Hi,

 I decided to try Phoenix3. I looked up at a couple of examples and
since I use Boost.Units (which depends on Boost.MPL) heavily I tried
to mix both only to find out that there is an obscure incompatibility
between MPL and Phoenix3. The way to show this is just to compile the
phoenix3/.../function.cpp example

https://svn.boost.org/svn/boost/sandbox/SOC/2010/phoenix3/libs/phoenix/example/function.cpp

with the following added line:

#include<boost/mpl/multiplies.hpp>

I get this error message:

In file included from function.cpp:12:
/home/user/usr/include/boost/mpl/multiplies.hpp:38: error: wrong
number of template arguments (7, should be 5)
/home/user/usr/include/boost/mpl/aux_/preprocessed/gcc/times.hpp:68:
error: provided for ‘template<class N1, class N2, class N3, class N4,
class N5> struct boost::mpl::times’

The full code (almost identical to the example) follows -- Thank
you,   Alfredo

/
*=============================================================================
    Copyright (c) 2001-2003 Joel de Guzman

    Distributed under the Boost Software License, Version 1.0. (See
accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#include <vector>
#include <algorithm>
#include <iostream>
#include <boost/phoenix/core.hpp>
#include <boost/phoenix/function.hpp>
#include<boost/mpl/multiplies.hpp> ///////////// offending line

using boost::phoenix::function;

struct is_odd_
{
    template <typename Arg>
    struct result
    {
        typedef bool type;
    };

    template <typename Arg>
    bool operator()(Arg arg1) const
    {
        return arg1 % 2 == 1;
    }
};

function<is_odd_> is_odd;

int
main()
{
    using boost::phoenix::arg_names::arg1;

    int init[] = { 2, 10, 4, 5, 1, 6, 8, 3, 9, 7 };
    std::vector<int> c(init, init + 10);
    typedef std::vector<int>::iterator iterator;

    //  Find the first odd number in container c
    iterator it = std::find_if(c.begin(), c.end(), is_odd(arg1));

    if (it != c.end())
        std::cout << *it << std::endl;    //  if found, print the
result
    return 0;
}