std::error_condition:: error_condition

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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

. Effectively calls


        make_error_condition

that is only found by argument-dependent lookup for

. 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

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

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

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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>

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)