std::function<> and lambdas

main.cpp

#include <map>
#include <functional>
#include <string>
#include <iostream>
using namespace std;

function<void(string,string)> func;


void actualABFunc(string a, string b){
	string ab = a;ab+=b;
	cout << ab << endl;
}

void actualBAFunc(string a, string b){
	string ba = b;ba+=a;
	cout << ba << endl;
}

class Game
{
public:

	Game(){

	}

	void requiredMethod(string a, string b){
		string s;
		for (int i=0;i<5;i++)
			s+=a;
		for (int i=0;i<5;i++)
			s+=b;
		
		cout << s << endl;
	}

};

void main(int _Argc, char** _Argv){


	func = actualABFunc;
	
	func("a","b");

	func = actualBAFunc;

	func("a","b");

	Game* g = new Game();
	Game game;

	func = [&](string a,string b) { g->requiredMethod(a,b); } ;
	func("a","b");

}