std::generic_category - cppreference.com (original) (raw)
Obtains a reference to the static error category object for generic errors. The object is required to override the virtual function error_category::name() to return a pointer to the string "generic". It is used to identify error conditions that correspond to the POSIX errno codes.
[edit] Parameters
(none)
[edit] Return value
A reference to the static object of unspecified runtime type, derived from std::error_category.
[edit] Example
#include #include #include #include int main() { std::error_condition econd = std::generic_category().default_error_condition(EDOM); std::cout << "Category: " << econd.category().name() << '\n' << "Value: " << econd.value() << '\n' << "Message: " << econd.message() << '\n'; }
Output:
Category: generic Value: 33 Message: Numerical argument out of domain