I wonder if the original array of length can be converted to std::initializer_list.

struct stc {
    int arr[1]; // flexible array member is not supported in CPP
};

void test(std::initializer_list<int> lst) {
    for (auto l : lst)
        std::cout << l << std::endl;
}

int main() {
    stc s;
    for (int i = 0; i < 10; PPi) {
        s.arr[i] = i;
    }
    // 10(s.arr)
    // test()s.arr
}
CPP
Mar.15,2021
The

CPP standard only provides that the compiler can help us convert a constant array defined by {} into an initializer_list object, so that functions that accept initializer_list as parameters (usually various constructors) can accept {}, which extends the syntax so that we can initialize the container like a normal array, simplifying the code.

but don't use initializer_list as a normal (container).

in the implementation version of GCC (4.8), the constructor of initializer_list is implemented as private. You cannot construct a valid initializer_list except through {} and ask the compiler to do it for you. 

namespace std
{
  /// initializer_list
  template<class _E>
    class initializer_list
    {
    public:
      typedef _E                value_type;
      typedef const _E&         reference;
      typedef const _E&         const_reference;
      typedef size_t            size_type;
      typedef const _E*         iterator;
      typedef const _E*         const_iterator;

    private:
      iterator                  _M_array;
      size_type                 _M_len;

      // The compiler can call a private constructor.
      constexpr initializer_list(const_iterator __a, size_type __l)
      : _M_array(__a), _M_len(__l) { }

    public:
"/usr/include/cPP/4.8/initializer_list" [readonly] 107 lines --17%--

in the implementation version of VCPP 2017, the constructor of initializer_list is public. 

constexpr initializer_list(const _Elem *_First_arg,
        const _Elem *_Last_arg) _NOEXCEPT
        : _First(_First_arg), _Last(_Last_arg)
        {    // construct with pointers
        }

so the following code is ok on VCPP2017: 

-sharpinclude <iostream>

void test(std::initializer_list<int> lst) {
    for (auto l : lst)
        std::cout << l << std::endl;
}

int main() {
    int a[] = { 1, 2, 3, 4 };

    test({ 1, 2, 3, 4 }); // cPP standard 

    test(std::initializer_list<int>(a, a + 4)); // compile error in gcc 4.8 but ok in vcPP2017

    return 0;
}

but this is not guaranteed.

CPP supports a new syntax through library code in conjunction with the compiler, which may be the cause of confusion.

Previous: Can i18n internationalization do key in Chinese?

Next: How do I export Excel using datatables?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e48b98-652f2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e48b98-652f2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?