#include <iostream>
#include <cstdlib>

#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include <boost/function.hpp>

using namespace std;
using namespace boost;
using namespace boost::lambda;

unsigned 
func_impl (int arg1, bool arg2, double arg3)
{
  cout << "function() called with args "
       << arg1 << ", " << arg2 << ", " << arg3 << endl;

  return abs (static_cast<int>((arg2 ? arg1 : 2 * arg1) * arg3));
}

int 
main ()
{
  function <unsigned(bool, double)> f1 = bind (func_impl, 15, _1, _2);
  function <unsigned(double)>       f2 = bind (f1, false, _1);
  function <unsigned()>             f3 = bind (f2, 4.0);

  cout << "now invoking f3" << endl;

  unsigned result = f3 ();

  cout << "result = " << result << endl;

  return 0;
}