[Boost-users] [phoenix] Basic recursive function.

Subject: [Boost-users] [phoenix] Basic recursive function.
From: Robert Jones (robertgbjones_at_[hidden])
Date: 2011-04-13 11:10:12

I'm a newbie to Phoenix, just exploring, but I guess my intent in this code
is
obvious. Can anyone tell me what I'm doing wrong?

Thx

- Rob.

#include <iostream>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/home/phoenix/operator.hpp>
#include <boost/spirit/home/phoenix/statement.hpp>
#include <boost/function.hpp>

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

int main()
{
    boost::function<unsigned( unsigned )> factorial;
    factorial = if_else( _1 == 0, 1, _1 * factorial( _1 - 1 ) );

    cout << factorial( 3 ) << endl;

    return 0;
}