Manpages - std_error_code.3

NAME
SYNOPSIS
- Public Member Functions
- Related Functions
Detailed Description
Author

NAME

std::error_code

SYNOPSIS

Public Member Functions

template<typename _ErrorCodeEnum , typename = typename enable_if<is_error_code_enum<_ErrorCodeEnum>::value>::type> error_code (_ErrorCodeEnum __e) noexcept

error_code (int __v, const error_category &__cat) noexcept

void assign (int __v, const error_category &__cat) noexcept

const error_category & category () const noexcept

void clear () noexcept

error_condition default_error_condition () const noexcept

_GLIBCXX_DEFAULT_ABI_TAG string message () const

operator bool () const noexcept

template<typename _ErrorCodeEnum > enable_if*< *is_error_code_enum*< _ErrorCodeEnum >::value, *error_code & >::type operator= (_ErrorCodeEnum __e) noexcept

int value () const noexcept

Related Functions

(Note that these are not member functions.)

error_condition make_error_condition (errc) noexcept

bool operator!= (const error_code &__lhs, const error_code &__rhs) noexcept

bool operator== (const error_code &__lhs, const error_code &__rhs) noexcept

error_code make_error_code (errc __e) noexcept

Detailed Description

Class error_code

This class is a value type storing an integer error number and a category that gives meaning to the error number. Typically this is done close the the point where the error happens, to capture the original error value.

An error_code object can be used to store the original error value emitted by some subsystem, with a category relevant to the subsystem. For example, errors from POSIX library functions can be represented by an errno value and the ’generic’ category, but errors from an HTTP library might be represented by an HTTP response status code (e.g. 404) and a custom category defined by the library.

Definition at line 180 of file std/system_error.

Author

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