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

hello_c++0x.cpp

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

using namespace std;

list<int> map(int (*f)(int x), list<int>* l) {
    list<int> result;
    list<int>::iterator it = l->begin();
    
    while(it != l->end()) {
        result.push_back(f(*it++));   
    }
    return result;
}

/*
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;
    
    list<int> p = map([](int x) { return x * x; }, &l);
    for(list<int>::iterator it=p.begin(); it!=p.end(); ++it) {
        cout << *it << ' ';
    }
    cout << endl;
    
    return 0;
    
}

hello_python.py

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