Iterator wrapper that allows to use two iterators in range based for loop.

iterator_wrapper.h

template <typename T>
struct iterator_wrapper
{
    iterator_wrapper(T&& begin, T&& end) noexcept
    : m_begin{std::forward<T>(begin)}, m_end{std::forward<T>(end)} {}

    const T& begin() const noexcept
    {
        return m_begin;
    }

    const T& end() const noexcept
    {
        return m_end;
    }

private:
    T m_begin;
    T m_end;
};

template <typename T>
iterator_wrapper<T> make_iterator_wrapper(T&& begin, T&& end) noexcept
{
    return {std::forward<T>(begin), std::forward<T>(end)};
}

test.cpp

TEST(iterator_wrapper, for_each)
{
    std::vector<int> values = {1,2,3,4,5,6,7,8,9};

    auto r = 1;
    for (auto& i : make_iterator_wrapper(std::begin(values), std::end(values)))
    {
        EXPECT_EQ(r, i);
        r++;
    }
}