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std::basic_ofstream::is_open

Da cppreference.com.
< cpp‎ | io‎ | basic ofstream

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
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Astrazioni
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
Original:
Array I/O
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istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ofstream
Membri funzioni
Original:
Member functions
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basic_ofstream::basic_ofstream
basic_ofstream::operator=(C++11)
basic_ofstream::swap(C++11)
basic_ofstream::rdbuf
Operazioni sui file
Original:
File operations
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basic_ofstream::is_open
basic_ofstream::open
basic_ofstream::close
Non membri funzioni
Original:
Non-member functions
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basic_ofstream::swap(std::basic_ofstream)(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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Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
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[modifica] 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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[modifica] Esempio

[modifica] Vedi anche

apre un file e lo associa con il flusso
Original:
opens a file and associates it with the stream
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(membro pubblico funzione) [edit]
chiude il file associato
Original:
closes the associated file
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(membro pubblico funzione) [edit]