| Localization library | |||||||||||||||||||||||||
| Regular expressions library(C++11) | |||||||||||||||||||||||||
| Formatting library(C++20) | |||||||||||||||||||||||||
| Null-terminated sequence utilities | |||||||||||||||||||||||||
| Byte strings | |||||||||||||||||||||||||
| Multibyte strings | |||||||||||||||||||||||||
| Wide strings | |||||||||||||||||||||||||
| Primitive numeric conversions | |||||||||||||||||||||||||
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| Text encoding identifications | |||||||||||||||||||||||||
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| Standard format specification | ||||
| Formatting functions | ||||
(C++20) | ||||
(C++20) | ||||
(C++20) | ||||
(C++20) | ||||
(C++20) | ||||
(C++20) | ||||
| Format strings | ||||
(C++20)(C++20)(C++20) | ||||
(C++26) | ||||
| Formatting concepts | ||||
(C++23) | ||||
| Formatter | ||||
(C++20) | ||||
(C++23) | ||||
(C++23) | ||||
(C++23) | ||||
(C++20)(C++20)(C++20) | ||||
(C++20)(C++20)(C++20) | ||||
(C++23) | ||||
(C++23) | ||||
| Formatting arguments | ||||
(C++20) | ||||
(C++20) | ||||
(C++20)(C++20)(C++20) | ||||
visit_format_arg (C++20)(deprecated in C++26) | ||||
(C++20)(C++20) | ||||
| Format error | ||||
(C++20) |
Defined in header <format> | ||
template<class Visitor,class Context> /* see below */ visit_format_arg( Visitor&& vis,std::basic_format_arg<Context> arg); | (since C++20) (deprecated in C++26) | |
Applies the visitorvis to the object contained inarg.
Equivalent tostd::visit(std::forward<Visitor>(vis), value), wherevalue is thestd::variant stored inarg.
Contents |
| vis | - | aCallable that accepts every possible alternative fromarg |
| arg | - | astd::basic_format_arg to be visited |
The value returned by the selected invocation of the visitor.
As of C++26,std::visit_format_arg is deprecated in favor of thevisit member functions ofstd::basic_format_arg.
| This section is incomplete Reason: no example |
(C++20)(C++20) | creates a type-erased object referencing all formatting arguments, convertible toformat_args(function template)[edit] |
