std::error_category - cppreference.com (original) (raw)
std::error_category serves as the base class for specific error category types, such as std::system_category, std::iostream_category, etc. Each specific category class defines the error_code - error_condition mapping and holds the explanatory strings for all error_conditions. The objects of error category classes are treated as singletons, passed by reference.
[edit] Member functions
| (constructor) | constructs an error_category (public member function) [edit] |
|---|---|
| (destructor)[virtual] | destructs an error_category (virtual public member function) [edit] |
| operator=[deleted] | not copy assignable (public member function) [edit] |
| name[virtual] | obtains the name of the category (virtual public member function) [edit] |
| default_error_condition[virtual] | maps error_code to error_condition (virtual public member function) [edit] |
| equivalent[virtual] | compares error_code and error_condition for equivalence (virtual public member function) [edit] |
| message[virtual] | obtains the explanatory string (virtual public member function) [edit] |
| operator==operator!=operator<operator<=>(removed in C++20)(removed in C++20)(C++20) | compares two error categories (function) [edit] |