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std::system_error::system_error

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< cpp‎ | error‎ | system error

 
 
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Digite apoio (basic types, RTTI, type traits)
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Utilidades do programa
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Data e hora
Objetos de função
initializer_list(C++11)
bitset
hash(C++11)
Os operadores relacionais
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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
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Manipulação de falhas de exceção
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Exception handling failures
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terminate
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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
Original:
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)
 
std::system_error
Funções de membro
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Member functions
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system_error::system_error
system_error::code
system_error::what
 
system_error( std::error_code ec );
(1) (a partir do C++ 11)
system_error( std::error_code ec, const std::string& what_arg );
(2) (a partir do C++ 11)
system_error( std::error_code ec, const char* what_arg );
(2) (a partir do C++ 11)
system_error( int ev, const std::error_category& ecat
(3) (a partir do C++ 11)
system_error( int ev, const std::error_category& ecat,
              const std::string& what_arg);
(4) (a partir do C++ 11)
system_error( int ev, const std::error_category& ecat,
              const char* what_arg);
(4) (a partir do C++ 11)
Constrói objeto de erro novo sistema.
Original:
Constructs new system error object.
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1)
Construções com ec código de erro
Original:
Constructs with error code ec
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2)
Construções com ec código de erro e what_arg corda explicação. A seqüência de caracteres retornado por what() é garantida para conter what_arg.
Original:
Constructs with error code ec and explanation string what_arg. The string returned by what() is guaranteed to contain what_arg.
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3)
Construções com ev subjacente o código de erro e categoria de erro associada ecat.
Original:
Constructs with underlying error code ev and associated error category ecat.
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4)
Construções com ev subjacente código de erro, ecat categoria associada erro e what_arg corda explicativo. A seqüência de caracteres retornado por what() é garantida para conter what_arg.
Original:
Constructs with underlying error code ev, associated error category ecat and explanatory string what_arg. The string returned by what() is guaranteed to contain what_arg.
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[editar] Parâmetros

ec -
código de erro
Original:
error code
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ev -
código de erro na codificação de base
Original:
error code in base encoding
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ecat -
a categoria de erro
Original:
the category of error
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what_arg -
cadeia explicativa
Original:
explanatory string
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[editar] Exemplo

Demonstra como criar uma exceção system_error de um valor de errno
Original:
Demonstrates how to create a system_error exception from a errno value
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#include <iostream>
#include <system_error>
 
int main()
{
    try
    {
        throw std::system_error(EDOM, std::system_category());
    }
    catch (const std::system_error& error)
    {
        std::cout << "Error: " << error.code()
                  << " - " << error.code().message() << '\n';
    }
}

Output:

Error: system:33 - Numerical argument out of domain