Functor template

functor.cpp

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;

class X {
    public :
        void op() {
            cout << "X::op() " << endl;
        }
};

//overrides the operator ()
class Functor {
    public : 
        void operator() (X &elem) {
            elem.op();
        }
};

int main () {
    vector<X> v;
    v.push_back(X());
    v.push_back(X());
    Functor f;

    for_each (v.begin(),v.end(),f);
}