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

Constructs new error condition.

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

2) Copy constructor. Initializes the error condition with the contents of other.

3) Initializes the error condition with error code val and error category cat.

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

Parameters

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

Notes

The ADL-found make_error_condition is intended to be used in the original proposal N2422, and used by all known implementations. However, the standard requires that only std::make_error_condition overloads are considered. This is LWG issue 3629.

See also

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