std::error_condition::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>

 

error_condition() noexcept;	(1)	(since C++11)
error_condition( int val, const error_category& cat ) noexcept;	(2)	(since C++11)
template< class ErrorConditionEnum > error_condition( ErrorConditionEnum e ) noexcept;	(3)	(since C++11)
error_condition( const error_condition& other ) = default;	(4)	(since C++11) (implicitly declared)
error_condition( error_condition&& other ) = default;	(5)	(since C++11) (implicitly declared)

Constructs new error condition.

1) Default constructor. Initializes the error condition with generic category and error value ​0​.

2) Initializes the error condition with error value val and error category cat.

3) Initializes the error condition with enum e. Effectively calls make_error_condition that is only found by argument-dependent lookup for e. This overload participates in overload resolution only if std::is_error_condition_enum<ErrorConditionEnum>::value is true.

4,5) Implicitly defined copy constructor and move constructor. Initializes the error condition with the contents of the other.

Parameters

other	-	another error condition to initialize with
val	-	error value
cat	-	error category
e	-	error condition enum

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 3629	C++11	only std::make_error_condition overloads were used	ADL-found overloads are used

See also

make_error_condition(std::errc) (C++11)	creates an error condition for an errc value e (function)
make_error_condition(std::io_errc) (C++11)	constructs an iostream error condition (function)
make_error_condition(std::future_errc) (C++11)	constructs a future error_condition (function)