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std::generic_category

De cppreference.com
< cpp‎ | error

 
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
(C++11)
Operadores relacionales
Original:
Relational operators
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Pares y tuplas
Original:
Pairs and tuples
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(C++11)
Cambiar, hacia adelante y mover
Original:
Swap, forward and move
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(C++11)
(C++11)
(C++11)
 
Gestión de errores
Manejo de excepciones
Original:
Exception handling
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Fallas de control de excepciones
Original:
Exception handling failures
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(obsoleto)
(C++11)(obsoleto)
(obsoleto)
Categorías excepción
Original:
Exception categories
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Los códigos de error
Original:
Error codes
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Los códigos de error
Las afirmaciones
Original:
Assertions
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instalación SYSTEM_ERROR
Original:
system_error facility
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generic_category
(C++11)
(C++11)
(C++11)
 
Definido en la cabecera <system_error>
const std::error_category& generic_category();
(desde C++11)
Obtiene una referencia al objeto de error de categoría estática de los errores genéricos. El objeto es necesaria para anular el error_category::name() función virtual para devolver un puntero a la cadena "generic". Se utiliza para identificar condiciones de error que corresponden a los códigos de POSIX errno .
Original:
Obtains a reference to the static error category object for generic errors. The object is required to override the virtual function error_category::name() to return a pointer to the string "generic". It is used to identify error conditions that correspond to the POSIX errno codes.
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Contenido

[editar] Parámetros

(Ninguno)
Original:
(none)
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[editar] Valor de retorno

Una referencia al objeto estático de tipo no especificado de tiempo de ejecución, derivado de std::error_category .
Original:
A reference to the static object of unspecified runtime type, derived from std::error_category.
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[editar] Excepciones

noexcept specification:  
noexcept
  (desde C++11)

[editar] Ejemplo

#include <iostream>
#include <system_error>
#include <cerrno>
#include <string>
int main()
{
    std::error_condition econd = std::generic_category().default_error_condition(EDOM);
    std::cout << "Category: " << econd.category().name() << '\n'
              << "Value: " << econd.value() << '\n'
              << "Message: " << econd.message() << '\n';
}

Salida:

Category: generic
Value: 33
Message: Numerical argument out of domain

[editar] Ver también

identifica la categoría de error del sistema operativo
Original:
identifies the operating system error category
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(función) [editar]
(C++11)
la enumeración std::error_condition lista de todos los estándares <cerrno> constantes macro
Original:
the std::error_condition enumeration listing all standard <cerrno> macro constants
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(clase) [editar]