Namespace
Varianti

std::is_error_code_enum<std::io_errc>

Da cppreference.com.
< cpp‎ | io‎ | io errc

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Astrazioni
Original:
Abstractions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
Original:
Array I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
iostream_category(C++11)
io_errc(C++11)
 
std::io_errc
Helper classi
Original:
Helper classes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
is_error_code_enum<std::io_errc>
Helper funzioni
Original:
Helper functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
make_error_code(std::io_errc)
make_error_condition(std::io_errc)
 
Defined in header <ios>
template< >
struct is_error_code_enum<std::io_errc> : public std::true_type { };
(dal C++11)
Questa specializzazione di componenti di libreria std::is_error_code_enum informa gli altri che i valori di tipo std::io_errc sono enumerazioni che contengono i codici di errore, che li rende convertibile in modo implicito e assegnabili a oggetti di tipo std::error_code.
Original:
This specialization of std::is_error_code_enum informs other library components that values of type std::io_errc are enumerations that hold error codes, which makes them implicitly convertible and assignable to objects of type std::error_code.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Indice

Inherited from std::integral_constant

Member constants

value
[statico]
true
(pubblico membro statico costante)

Member functions

operator bool
converte l'oggetto in bool, restituisce value
Original:
converts the object to bool, returns value
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(membro pubblico funzione)

Member types

Tipo
Original:
Type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
value_type bool
type std::integral_constant<bool, value>

[modifica] Esempio

Il confronto tra e.code() e std::io_errc::stream compila perché std::is_error_code_enum<std::io_errc>::value == true
Original:
The comparison between e.code() and std::io_errc::stream compiles because std::is_error_code_enum<std::io_errc>::value == true
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <iostream>
#include <fstream>
int main()
{
    std::ifstream f("doesn't exist");
    try {
        f.exceptions(f.failbit);
    } catch (const std::ios_base::failure& e) {
        std::cout << "Caught an ios_base::failure.\n";
        if(e.code() == std::io_errc::stream)
            std::cout << "The error code is std::io_errc::stream\n";
    }
}

Output:

Caught an ios_base::failure.
The error code is std::io_errc::stream

[modifica] Vedi anche

identifica una classe come codice_errore enumerazione
Original:
identifies a class as an error_code enumeration
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(classe template) [edit]
in possesso di un dipendente dalla piattaforma codice di errore
Original:
holds a platform-dependent error code
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(classe) [edit]
(C++11)
il flusso IO codici di errore
Original:
the IO stream error codes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(enum) [edit]