#include <algorithm>
#include <map>
#include <iostream>
#include "boost/bind.hpp"

using namespace std;

void printPair(const pair<int, int>& elem)
{
  cout << elem.first << "->" << elem.second << endl;
}

class Test {

public:
Test() {
  myMap.insert(make_pair(4, 40));
  myMap.insert(make_pair(5, 50));
  myMap.insert(make_pair(6, 60));
  myMap.insert(make_pair(7, 70));
  myMap.insert(make_pair(8, 80));
}

void printResult() {
  int a = 10;
  //using static method with two argument
  for_each(myMap.begin(), myMap.end(), boost::bind(&Test::printPair, _1, a)); 
  //using static method with one argument
  for_each(myMap.begin(), myMap.end(), boost::bind(&Test::printPair2, _1)); 
  //using instance method
  for_each(myMap.begin(), myMap.end(), boost::bind(&Test::printPair3,  boost::ref(*this), _1)); 
}

static void printPair(const pair<int, int>& elem, int a)
{
  cout << elem.first << "->" << elem.second << ";a=" << a << endl;
}

static void printPair2(const pair<int, int>& elem)
{
  cout << elem.first << "2->" << elem.second <<  endl;
}

void printPair3(const pair<int, int>& elem)
{
  cout << elem.first << "3->" << elem.second <<  endl;
}



private:
  map<int, int> myMap;
};

int f(int a, int b) {
    return a - b;
}

int main(int argc, char** argv)
{
  map<int, int> myMap;
  myMap.insert(make_pair(4, 40));
  myMap.insert(make_pair(5, 50));
  myMap.insert(make_pair(6, 60));
  myMap.insert(make_pair(7, 70));
  myMap.insert(make_pair(8, 80));

  for_each(myMap.begin(), myMap.end(), &printPair); 
  Test t;
  t.printResult();

  //using bind create a new method then call it with 1
  int c = boost::bind(f, _1, 2)(1); 
  std::cout << "c:" << c << endl;

  c = boost::bind(f, 10, _1)(1); 
  std::cout << "c:" << c << endl;

  //exchange the argument
  c = boost::bind(f, _2, _1)(1, 2); 
  std::cout << "c:" << c << endl;
  return (0);
}