std::error_code::category (3) Linux Manual Page

std::error_code::category – std::error_code::category

Synopsis

const std::error_category &category() const noexcept;
(since C++ 11)

Returns the error category of the error value.

Parameters

(none)

Return value

The error category of the error value.

See also

      obtains the value of the error_code
value (public member function)