std::error_condition

 

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std::error_condition

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>

 

Defined in header <system_error>
class error_condition;		(since C++11)

std::error_condition is a platform-independent error code. Like std::error_code, it is uniquely identified by an integer value and a std::error_category, but unlike std::error_code, the value is not platform-dependent.

A typical implementation holds one integer data member (the value) and a pointer to an std::error_category.

Member functions

(constructor)	constructs an error_condition (public member function)
operator=	replaces the contents (public member function)
assign	replaces the contents (public member function)
clear	sets the error_condition to value ​0​ in generic_category (public member function)
value	obtains the value of the error_condition (public member function)
category	obtains the error_category for this error_condition (public member function)
message	obtains the explanatory string (public member function)
operator bool	checks if the value is non-zero (public member function)

Non-member functions

operator==operator!=operator<operator<=> (removed in C++20)(removed in C++20)(C++20)

compares error_conditions and error_codes (function)

Helper classes

is_error_condition_enum (C++11)	identifies an enumeration as an std::error_condition (class template)
std::hash<std::error_condition> (C++17)	hash support for std::error_condition (class template specialization)

See also

error_code (C++11)	holds a platform-dependent error code (class)
error_category (C++11)	base class for error categories (class)
make_error_condition(std::errc) (C++11)	creates an error condition for an errc value e (function)