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std::generic_category

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< cpp‎ | error

 
 
Biblioteca de utilitários
Digite apoio (basic types, RTTI, type traits)
Gerenciamento de memória dinâmica
De tratamento de erros
Utilidades do programa
Variadic funções
Data e hora
Objetos de função
initializer_list(C++11)
bitset
hash(C++11)
Os operadores relacionais
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares e tuplas
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Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Troque, avançar e avançar
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Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
De tratamento de erros
Manipulação de exceção
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Exception handling
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exception
uncaught_exception
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)
Manipulação de falhas de exceção
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Exception handling failures
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terminate
terminate_handler
get_terminate(C++11)
set_terminate
unexpected(obsoleta)
bad_exception
unexpected_handler(obsoleta)
get_unexpected(C++11)(obsoleta)
set_unexpected(obsoleta)
Categorias de exceção
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Exception categories
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logic_error
invalid_argument
domain_error
length_error
out_of_range
runtime_error
range_error
overflow_error
underflow_error
Códigos de erro
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Error codes
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Códigos de erro
errno
Afirmações
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Assertions
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assert
instalação system_error
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system_error facility
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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)
 
Defined in header <system_error>
const std::error_category& generic_category();
(a partir do C++ 11)
Obtém uma referência para o objeto estático erro categoria para erros genéricos. O objeto é necessária para substituir o error_category::name() função virtual para retornar um ponteiro para a "generic" string. Ele é utilizado para identificar as condições de erro, que correspondem aos códigos 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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Índice

[editar] Parâmetros

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

Uma referência ao objeto estático do tipo não especificado de tempo de execução, 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] Exceções

noexcept specification:  
noexcept
  (a partir do C++ 11)

[editar] Exemplo

#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';
}

Output:

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

[editar] Veja também

identifica a categoria de erro do sistema operacional
Original:
identifies the operating system error category
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(função) [edit]
(C++11)
enumeração std::error_condition listando todos os padrões <cerrno> constantes macro
Original:
the std::error_condition enumeration listing all standard <cerrno> macro constants
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(classe) [edit]