std::error_code::error_code

 

C++

Language

Standard library headers

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Utilities library

Type support (basic types, RTTI, type traits)

Dynamic memory management

Error handling

Program utilities

Variadic functions

Date and time

Function objects

initializer_list (C++11)

bitset

hash (C++11)

Relational operators

rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=

Optional and any

optional (C++17)

any (C++17)

Pairs and tuples

pair

tuple (C++11)

apply (C++17)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

integer_sequence (C++14)

Swap, forward and move

swap

exchange (C++14)

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

Type operations

declval (C++11)

as_const (C++17)

 

Error handling

Exception handling exception uncaught_exceptionuncaught_exceptions (C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) exception_list (C++17) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate unexpected (deprecated) bad_exception unexpected_handler (deprecated) get_unexpected (C++11)(deprecated) set_unexpected (deprecated)

Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error Error codes Error codes errno Assertions assert system_error facility error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11)

 

std::error_code

Member functions

error_code::error_code

error_code::operator=

error_code::assign

Modifiers

error_code::clear

Observers

error_code::value

error_code::category

error_code::default_error_condition

error_code::message

error_code::operator bool

Non-member functions

operator< operator== operator!=

operator<<

Helper classes

is_error_code_enum

hash<std::error_code>

 

error_code();	(1)	(since C++11)
error_code( int ec, const error_category& ecat );	(2)	(since C++11)
template< class ErrorCodeEnum > error_code( ErrorCodeEnum e );	(3)	(since C++11)

Constructs new error code.

1) Constructs error code with default value. Equivalent to error_code(0, std::system_category()).

2) Constructs error code with ec as the platform-dependent error code and ecat as the corresponding error category.

3) Constructs error code from an error code enum e. Equivalent to *this = make_error_code(e). The overload participates in overload resolutions only if std::is_error_code_enum<ErrorCodeEnum>::value == true.

Parameters

ec	-	platform dependent error code to construct with
ecat	-	error category corresponding to ec
e	-	error code enum to construct with

Exceptions

noexcept specification:  

noexcept

  

See also

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