Namespace
Varianti

std::basic_ostream::flush

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

 
 
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
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Streams
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Astrazioni
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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
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Array I/O
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istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
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Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
Gli oggetti globali
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Global objects
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Membri funzioni
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Member functions
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basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
Ingresso formattato
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Formatted input
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basic_ostream::operator<<
Ingresso non formattato
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Unformatted input
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basic_ostream::put
basic_ostream::write
Posizionamento
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Positioning
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basic_ostream::tellp
basic_ostream::seekp
Varie
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Miscellaneous
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basic_ostream::flush
basic_ostream::swap(C++11)
Membri classi
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Member classes
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basic_ostream::sentry
Non membri funzioni
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Non-member functions
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operator<<(std::basic_ostream)
 
basic_ostream& flush();

Writes uncommitted changes to the underlying output sequence.

If rdbuf() is a null pointer, does nothing

Otherwise, constructs a sentry object which checks the stream for errors and flushes the tie()'d output streams. If the sentry object returns false, does nothing (dal C++11)

Otherwise, calls rdbuf()->pubsync(). If the call returns -1, calls setstate(badbit).

Indice

[modifica] Parametri

(Nessuno)
Original:
(none)
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[modifica] Valore di ritorno

*this

[modifica] Eccezioni

May throw std::ios_base::failure if exceptions()&badbit!=0.

[modifica] Esempio

#include <thread>
#include <iostream>
#include <chrono>
void f()
{
    std::cout << "Output from thread...";
    std::this_thread::sleep_for(std::chrono::seconds(2));
    std::cout << "...thread calls flush()\n";
    std::cout.flush();
}
 
int main()
{
    std::thread t1(f);
    std::this_thread::sleep_for(std::chrono::seconds(1));
    std::clog << "Output from main\n";
    t1.join();
}

Output:

Output from main
Output from thread.....thread calls flush()

[modifica] Vedi anche

sincronizza con il dispositivo di archiviazione sottostante
Original:
synchronizes with the underlying storage device
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(membro pubblico of std::basic_istream funzione) [edit]
svuota il flusso di output
Original:
flushes the output stream
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(funzione di modello)
uscite '\n' e colori nel flusso di output
Original:
outputs '\n' and flushes the output stream
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(funzione di modello)