std::basic_fstream::is_open

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

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Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

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

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iostream_category (C++11)

io_errc (C++11)

 

std::basic_fstream

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_fstream::basic_fstream

basic_fstream::operator= (C++11)

basic_fstream::swap (C++11)

basic_fstream::rdbuf

Operazioni sui file Original: File operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_fstream::is_open

basic_fstream::open

basic_fstream::close

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basic_fstream::swap(std::basic_fstream) (C++11)

 

bool is_open()const;

Controlla se il flusso di file è associato un file.

Original:

Checks if the file stream has an associated file.

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Chiama efficacemente rdbuf()->is_open().

Original:

Effectively calls rdbuf()->is_open().

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Parametri

(Nessuno)

Original:

(none)

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Valore di ritorno

true se il flusso di file è associato un file, false altrimenti

Original:

true if the file stream has an associated file, false otherwise

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Vedi anche

open	apre un file e lo associa con il flusso Original: opens a file and associates it with the stream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
close	chiude il file associato Original: closes the associated file The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)