std::error_condition:: category

From cppreference.net

const error_category & category ( ) const noexcept ;		(начиная с C++11)

Возвращает сохранённую категорию ошибки.

(нет)

Сохраненная категория ошибки.

(C++11)

базовый класс для категорий ошибок
(класс)

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
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Technical specifications
Symbols index
External libraries

Member functions
error_condition::error_condition
error_condition::operator=
error_condition::assign
error_condition::clear
error_condition::value
error_condition::category
error_condition::message
error_condition::operator bool
Non-member functions
operator== operator!= operator< operator<=> (until C++20) (until C++20) (C++20)
Helper classes
is_error_condition_enum
hash <std::error_condition>