for_each

template <typename Type>
void for_each(const Type& container, std::function<void(typename Type::value_type)> &funct) {
    for (auto&& elem : container) {
        funct(elem);
    }
}

int main() {
    vector<int> v = { 1, 2, 3 };
    for_each(v, [](int e){
        cout << e << endl;
    });

    for_each(vector<int>({ 1, 2, 3 }), [](int e){
        cout << e << endl;
    });

    function<void(int)> funct = [](int e) {
        cout << e << endl;
    };

    for_each(v, funct);

    for_each(vector<int>{1}, funct);

    return 0;
}