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std::basic_istream::swap

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

 
 
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_istream
Gli oggetti globali
Original:
Global objects
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cin
wcin
Membri funzioni
Original:
Member functions
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basic_istream::basic_istream
basic_istream::~basic_istream
basic_istream::operator=(C++11)
Ingresso formattato
Original:
Formatted input
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basic_istream::operator>>
Ingresso non formattato
Original:
Unformatted input
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basic_istream::get
basic_istream::peek
basic_istream::unget
basic_istream::putback
basic_istream::getline
basic_istream::ignore
basic_istream::read
basic_istream::readsome
basic_istream::gcount
Posizionamento
Original:
Positioning
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basic_istream::tellg
basic_istream::seekg
Varie
Original:
Miscellaneous
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basic_istream::sync
basic_istream::swap(C++11)
Membri classi
Original:
Member classes
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basic_istream::sentry
Non membri funzioni
Original:
Non-member functions
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operator>>(std::basic_istream)
 
protected:
void swap(basic_istream& rhs);
(dal C++11)
Chiamate basic_ios::swap(rhs) per scambiare tutti i membri dati della classe base, ad eccezione di rdbuf() e swap i valori dei contatori gcount() tra *this e rhs. Questa funzione di swap è protetto: si chiama dalle funzioni di scambio delle classi swap flusso di input e std::basic_ifstream std::basic_istringstream, che sanno scambiare correttamente le streambuffers associati.
Original:
Calls basic_ios::swap(rhs) to swap all data members of the base class except for rdbuf(), and swaps the values of the gcount() counters between *this and rhs. This swap function is protected: it is called by the swap functions of the swappable input stream classes std::basic_ifstream and std::basic_istringstream, which know how to correctly swap the associated streambuffers.
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[modifica] Parametri

rhs -
diverso oggetto basic_istream dello stesso tipo di scambiare con
Original:
different basic_istream object of the same type to swap with
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[modifica] Esempio

#include <sstream>
#include <iostream>
#include <utility>
int main()
{
    std::istringstream s1("hello");
    std::istringstream s2("bye");
 
    s1.swap(s2); // OK, istringstream has a public swap()
    std::swap(s1, s2); // OK, calls s1.swap(s2)
//  std::cin.swap(s2); // ERROR: swap is a protected member
 
    std::cout << s1.rdbuf();
}

Output:

hello