std::error_code

       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++                              std::error_code(3cxx)

template<typename_ErrorCodeEnum,typename=_Check<_ErrorCodeEnum>>std::error_code::error_code(_ErrorCodeEnum__e)[inline],[noexcept]
       Initialize with a user-defined type, by calling make_error_code.

       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.

       Since
           C++11

consterror_category&std::error_code::category()const[inline],[noexcept]
       The error category that this error belongs to.

   error_conditionstd::error_code::default_error_condition()const[noexcept]
       An error_condition for this error's category and value.

   stringstd::error_code::message()const[inline]
       The category's description of the value.

   std::error_code::operatorbool()const[inline],[explicit],[noexcept]
       Test whether value() is non-zero.

   intstd::error_code::value()const[inline],[noexcept]
       The error value.

       std::error_code

       #include <system_error>

   PublicMemberFunctions
       template<typename_ErrorCodeEnum , typename  = _Check<_ErrorCodeEnum>> error_code (_ErrorCodeEnum __e)
           noexcept
           Initialize with a user-defined type, by calling make_error_code.
       error_code (const error_code &)=defaulterror_code (int __v, const error_category &__cat) noexcept
       voidassign (int __v, const error_category &__cat) noexcept
       const error_category & category () const noexcept
           The error category that this error belongs to.
       voidclear () noexcept
       error_conditiondefault_error_condition () const noexcept
           An error_condition for this error's category and value.
       stringmessage () const
           The category's description of the value.
       operatorbool () const noexcept
           Test whether value() is non-zero.
       error_code & operator= (const error_code &)=default
       int value () const noexcept
           The error value.

   RelatedSymbols
       (Note that these are not member symbols.)
       error_codemake_error_code (errc __e) noexcept
       bool operator!= (const error_code &__lhs, const error_code &__rhs) noexcept
       bool operator!= (const error_code &__lhs, const error_condition &__rhs) noexcept
       bool operator< (const error_code &__lhs, const error_code &__rhs) noexcept
       template<typename _CharT , typename _Traits > basic_ostream< _CharT, _Traits > & operator<<
           (basic_ostream< _CharT, _Traits > &__os, const error_code &__e)