std::basic_format_args(3)

NAME
std::basic_format_args - std::basic_format_args

Synopsis
   Defined in header <format>
   template< class Context > (1) (since C++20)
   class basic_format_args;
   using format_args = basic_format_args<std::format_context>; (2) (since C++20)
   using wformat_args = basic_format_args<std::wformat_context>; (3) (since C++20)
   Provides access to formatting arguments.

Member functions
   constructor constructs a basic_format_args object
                 (public member function)
   get returns formatting argument at the given index
                 (public member function) std::basic_format_args::basic_format_args
   basic_format_args() noexcept; (1)
   template< class... Args >
   basic_format_args( const /*format-arg-store*/<Context, Args...>& store ) (2)
   noexcept;
   1) Constructs a basic_format_args object that does not hold any formatting argument.
   2) Constructs a basic_format_args object from the result of a call to
   std::make_format_args or std::make_wformat_args.
   std::basic_format_args has reference semantics. It is the programmer's
   responsibility to ensure that *this does not outlive store (which, in turn, should
   not outlive the arguments to std::make_format_args or std::make_wformat_args). std::basic_format_args::get
   std::basic_format_arg<Context> get( std::size_t i ) const noexcept;
   Returns a std::basic_format_arg holding the i-th argument in args, where args is the
   parameter pack passed to std::make_format_args or std::make_wformat_args.
   If there's no such formatting argument (i.e. *this was default-constructed or i is
   not less than the number of formatting arguments), returns a default-constructed
   std::basic_format_arg (holding a std::monostate object).
   Deduction guides
   template< class Context, class... Args >
   basic_format_args( /*format-arg-store*/<Context, Args...> ) -> (since C++20)
   basic_format_args<Context>;

Example
    This section is incomplete
    Reason: no example
   Defect reports
   The following behavior-changing defect reports were applied retroactively to
   previously published C++ standards.
     DR Applied to Behavior as published Correct behavior
   P2216R3 C++20 format_args_t was provided due to removed
                      overparameterization of vformat_to
   LWG3810 C++20 basic_format_args has no deduction guide added

See also
   basic_format_arg class template that provides access to a formatting argument for
   (C++20) user-defined formatters
                    (class template)

Category:
     * Todo no example