up04-3(reference_wrapper)

#include <vector>
#include <functional>

template<typename T, typename F>
void myapply(T begin, T end, F func)
{
    for (auto i = begin; i != end; i++) {
        func(*i);
    }
}

template<typename T, typename F>
std::vector<std::reference_wrapper<typename std::iterator_traits<T>::value_type>> myfilter2(T begin, T end, F func)
{
    std::vector<std::reference_wrapper<typename std::iterator_traits<T>::value_type>> tmp;
    for (auto &i = begin; i != end; i++) {
        if (func(*i)) {
            tmp.push_back(*i);
        }
    }
    return tmp;
}