[format.syn]

namespace std { // [format.context], class template basic_format_context template<class Out, class charT> class basic_format_context; using format_context = basic_format_context<unspecified, char>; using wformat_context = basic_format_context<unspecified, wchar_t>; // [format.args], class template basic_format_args template<class Context> class basic_format_args; using format_args = basic_format_args<format_context>; using wformat_args = basic_format_args<wformat_context>; template<class Out, class charT> using format_args_t = basic_format_args<basic_format_context<Out, charT>>; // [format.functions], formatting functions template<class... Args> string format(string_view fmt, const Args&... args); template<class... Args> wstring format(wstring_view fmt, const Args&... args); template<class... Args> string format(const locale& loc, string_view fmt, const Args&... args); template<class... Args> wstring format(const locale& loc, wstring_view fmt, const Args&... args); string vformat(string_view fmt, format_args args); wstring vformat(wstring_view fmt, wformat_args args); string vformat(const locale& loc, string_view fmt, format_args args); wstring vformat(const locale& loc, wstring_view fmt, wformat_args args); template<class Out, class... Args> Out format_to(Out out, string_view fmt, const Args&... args); template<class Out, class... Args> Out format_to(Out out, wstring_view fmt, const Args&... args); template<class Out, class... Args> Out format_to(Out out, const locale& loc, string_view fmt, const Args&... args); template<class Out, class... Args> Out format_to(Out out, const locale& loc, wstring_view fmt, const Args&... args); template<class Out> Out vformat_to(Out out, string_view fmt, format_args_t<type_identity_t<Out>, char> args); template<class Out> Out vformat_to(Out out, wstring_view fmt, format_args_t<type_identity_t<Out>, wchar_t> args); template<class Out> Out vformat_to(Out out, const locale& loc, string_view fmt, format_args_t<type_identity_t<Out>, char> args); template<class Out> Out vformat_to(Out out, const locale& loc, wstring_view fmt, format_args_t<type_identity_t<Out>, wchar_t> args); template<class Out> struct format_to_n_result { Out out; iter_difference_t<Out> size; }; template<class Out, class... Args> format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, string_view fmt, const Args&... args); template<class Out, class... Args> format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, wstring_view fmt, const Args&... args); template<class Out, class... Args> format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, const locale& loc, string_view fmt, const Args&... args); template<class Out, class... Args> format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n, const locale& loc, wstring_view fmt, const Args&... args); template<class... Args> size_t formatted_size(string_view fmt, const Args&... args); template<class... Args> size_t formatted_size(wstring_view fmt, const Args&... args); template<class... Args> size_t formatted_size(const locale& loc, string_view fmt, const Args&... args); template<class... Args> size_t formatted_size(const locale& loc, wstring_view fmt, const Args&... args); // [format.formatter], formatter template<class T, class charT = char> struct formatter; // [format.parse.ctx], class template basic_format_parse_context template<class charT> class basic_format_parse_context; using format_parse_context = basic_format_parse_context<char>; using wformat_parse_context = basic_format_parse_context<wchar_t>; // [format.arguments], arguments // [format.arg], class template basic_format_arg template<class Context> class basic_format_arg; template<class Visitor, class Context> see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg); // [format.arg.store], class template format-arg-store template<class Context, class... Args> struct format-arg-store; // exposition only template<class Context = format_context, class... Args> format-arg-store<Context, Args...> make_format_args(const Args&... args); template<class... Args> format-arg-store<wformat_context, Args...> make_wformat_args(const Args&... args); // [format.error], class format_error class format_error; }

20 General utilities library [utilities]

20.20 Formatting [format]

20.20.1 Header <format> synopsis [format.syn]