NAME

       std::error_category

SYNOPSIS

       #include <system_error>

   Public Member Functions
       error_category (const error_category &)=delete
       virtual error_condition default_error_condition (int __i) const noexcept
       virtual bool equivalent (const error_code &__code, int __i) const noexcept
       virtual bool equivalent (int __i, const error_condition &__cond) const noexcept
       virtual string message (int) const =0
       virtual const char * name () const noexcept=0
       bool operator!= (const error_category &__other) const noexcept
       bool operator< (const error_category &__other) const noexcept
       error_category & operator= (const error_category &)=delete
       bool operator== (const error_category &__other) const noexcept

Detailed Description

       Abstract base class for types defining a category of error codes.

       An error category defines a context that give meaning to the integer stored in an error_code or
       error_condition object. For example, the standard errno constants such a EINVAL and ENOMEM are associated
       with the 'generic' category and other OS-specific error numbers are associated with the 'system'
       category, but a user-defined category might give different meanings to the same numerical values.

       Since
           C++11

Author

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                                                    libstdc++                          std::error_category(3cxx)