std::basic_ostream::basic_ostream — cppreference.com
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1)
Construit l'objet basic_ostream, en assignant des valeurs initiales pour la classe de base en appelant basic_ios::init(sb) .
Original:
Constructs the basic_ostream object, assigning initial values to the base class by calling basic_ios::init(sb).
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2)
Le constructeur de copie est protégé, et est supprimé. Flux de sortie ne sont pas copiable .
Original:
The copy constructor is protected, and is deleted. Output streams are not copyable.
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3)
Le constructeur utilise basic_ios<CharT, Traits>::move(rhs) déplacement pour déplacer tous les éléments basic_ios, à l'exception de la rdbuf(), de rhs en *this. Ce constructeur mouvement est protégé: il est appelé par les constructeurs de mobiles se déplacent classes de flux de sortie std::basic_ofstream et std::basic_ostringstream, qui savent correctement déplacer le streambuffer associé .
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.
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Paramètres
| sb | - | streambuffer à utiliser en tant que séquence de sortie Original: streambuffer to use as output sequence The text has been machine-translated via Google Translate. |
| rhs | - | basic_ostream pour initialiser à partir Original: basic_ostream to initialize from The text has been machine-translated via Google Translate. |
Exemple
#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'; }
Résultat :