c – 通过枚举值构造initializer_list包含随机值

#include <initializer_list>
#include <iostream>
#include <array>

template<typename T,std::size_t N,std::size_t... Is>
std::initializer_list<T> array_to_init_list_Helper(std::array<T,N> arr,std::index_sequence<Is...>)
{
    return {arr[Is]...};
}

template<typename T,std::size_t N>
std::initializer_list<T> array_to_init_list(std::array<T,N> arr)
{
    return array_to_init_list_Helper(arr,std::make_index_sequence<N>{});
}

int main()
{
    std::array<int,5> arr{1,2,3,4,5};
    auto init_list = array_to_init_list(arr);
    for (auto val : init_list)
        std::cout << val << " ";
}

我是getting random values,而我希望获得arr的值.