std::basic_ostream::basic_ostream
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<metanoindex/>
<tbody> </tbody> explicit basic_ostream( std::basic_streambuf<CharT, Traits>* sb ); |
(1) | |
protected: basic_ostream( const basic_ostream& rhs ) = delete; |
(2) | |
protected: basic_ostream( basic_ostream&& rhs ); |
(3) | (dal C++11) |
1)
Costruisce l'oggetto
basic_ostream, l'assegnazione di valori iniziali per la classe base chiamando basic_ios::init(sb).Original:
Constructs the
basic_ostream object, assigning initial values to the base class by calling basic_ios::init(sb).The text has been machine-translated via Google Translate.
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2)
Il costruttore di copia è protetto, e viene eliminato. Flussi di uscita non sono copiabili.
Original:
The copy constructor is protected, and is deleted. Output streams are not copyable.
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3)
Il costruttore utilizza
basic_ios<CharT, Traits>::move(rhs) mossa per spostare tutti i membri basic_ios, tranne per il rdbuf(), da rhs in *this. Questo costruttore mossa è protetta: viene chiamato dai costruttori movimento delle classi mobili flusso di output std::basic_ofstream e std::basic_ostringstream, che sa come muoversi correttamente il streambuffer associato.Original:
The move constructor uses
basic_ios<CharT, Traits>::move(rhs) to move all basic_ios members, except for the rdbuf(), from rhs into *this. This move constructor is protected: it is called by the move constructors of movable output stream classes std::basic_ofstream and std::basic_ostringstream, which know how to correctly move the associated streambuffer.The text has been machine-translated via Google Translate.
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Parametri
| sb | - | streambuffer utilizzare come sequenza di emissione
Original: streambuffer to use as output sequence The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| rhs | - | basic_ostream per inizializzare da
Original: basic_ostream to initialize from The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Esempio
#include <sstream>
#include <utility>
#include <iostream>
int main()
{
// std::ostream myout(std::cout); // ERROR: copy ctor is deleted
std::ostream myout(std::cout.rdbuf()); // OK: shares buffer with cout
// std::ostream s2(std::move(std::ostringstream() << 7.1)); // ERROR: move constructor
// is protected
std::ostringstream s2(std::move(std::ostringstream() << 7.1)); // OK: move ctor called
// through the derived class
myout << s2.str() << '\n';
}
Output:
7.1