My First C++0x (C++11) Program

hello_c++0x.cpp

#include <iostream>
#include <iterator>
#include <list>

using namespace std;

template<typename Iter>
iterator_traits<Iter>::value_type
reduce(function<iterator_traits<Iter>::value_type (iterator_traits<Iter>::value_type, iterator_traits<Iter>::value_type)> f,
           Iter begin, Iter end,
           iterator_traits<Iter>::value_type init) {
    Iter it(begin);
    iterator_traits<Iter>::value_type result = f(init, *it++);
    while(it != l->end()) {
        result = f(result, *it++);
    }
    return result;
}

int main() {
    list<int> l;
    l.push_back(1);
    l.push_back(2);
    l.push_back(3);
    l.push_back(4);

    cout << reduce([](int x, int y) { return x + y; }, l.begin(), l.end(), 0)
         << endl;
    
    return 0;
    
}

hello_python.py

print reduce(lambda x, y: x + y, (1, 2, 3, 4))