constexpr
cstring_view
Unnamed function(
    char const* str,
    size_t len) noexcept;

constexpr
u8cstring_view
Unnamed function(
    char8_t const* str,
    size_t len) noexcept;

constexpr
u16cstring_view
Unnamed function(
    char16_t const* str,
    size_t len) noexcept;

constexpr
u32cstring_view
Unnamed function(
    char32_t const* str,
    size_t len) noexcept;

constexpr
wcstring_view
Unnamed function(
    wchar_t const* str,
    size_t len) noexcept;