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    std::meta::reflect_constant_string

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    Defined in header <meta> 
    template< ranges::input_range R >
consteval std::meta::info reflect_constant_string( R&& r );
    		(since C++26)

    Returns a reflection that represents a character array object whose elements are corresponding elements of r, with a null character appended if r is not a string literal object.

    The resulting character array object is a template parameter object: it has static storage duration, and strings with the same contents correspond to the same object.

    The resulting character array object is also a potentially non-unique object.

    Formally, let:

    • CharT be ranges::range_value_t<R>, which must be one of char, wchar_t, char8_t, char16_t, or char32_t.
    • V be the pack of values of type CharT, whose elements are corresponding elements of r, except that if r is a string literal object, V does not include the terminating null character of r.
    • P be the template parameter object of type const CharT[sizeof...(V) + 1], initialized with {V..., CharT()}.

    This function returns a reflection that represents the object P.

    Parameters

    r - a input_range of characters

    Return value

    A reflection that represents a character array object, as described above.

    Notes

    The result of std::meta::reflect_constant_string is suitable for use with std::meta::substitute. If the caller wants a pointer to a static string, as opposite to a reflection value, std::define_static_string is usually more suitable.

    Example

    This section is incomplete
    Reason: no example

    See also

    (C++26)
    		 promotes compile-time string to static storage, returning a pointer to the first character of the static string
    (function template) [edit]
    (C++26)
    		 promotes compile-time array into static storage, returning a reflection representing the static array
    (function template) [edit]
    (C++26)
    		 returns a reflection representing a value or template parameter object, suitable for use as a constant template argument
    (function template) [edit]