名前空間
変種
操作

std::basic_ostream::operator=

提供: cppreference.com
< cpp‎ | io‎ | basic ostream

 
 
入力/出力ライブラリ
I / Oのマニピュレータ
CスタイルのI / O
バッファ
Original:
Buffers
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(廃止予定)
ストリーム
Original:
Streams
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
抽象化
Original:
Abstractions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
ファイルI / O
Original:
File I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ifstream
basic_ofstream
basic_fstream
文字列I / O
Original:
String I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_istringstream
basic_ostringstream
basic_stringstream
アレイのI / O
Original:
Array I/O
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
istrstream(廃止予定)
ostrstream(廃止予定)
strstream(廃止予定)
タイプ
Original:
Types
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
streamoff
streamsize
fpos
エラーカテゴリインターフェース
Original:
Error category interface
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
iostream_category(C++11)
io_errc(C++11)
 
std::basic_ostream
グローバルオブジェクト
Original:
Global objects
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
メンバ関数
Original:
Member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ostream::basic_ostream
basic_ostream::~basic_ostream
basic_ostream::operator=(C++11)
書式付き入力
Original:
Formatted input
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ostream::operator<<
書式なし入力
Original:
Unformatted input
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ostream::put
basic_ostream::write
ポジショニング
Original:
Positioning
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ostream::tellp
basic_ostream::seekp
その他
Original:
Miscellaneous
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ostream::flush
basic_ostream::swap(C++11)
メンバークラス
Original:
Member classes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
basic_ostream::sentry
非メンバ関数
Original:
Non-member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
operator<<(std::basic_ostream)
 
protected:
basic_istream& operator=( const basic_ostream& rhs ) = delete;
(1)
protected:
basic_ostream& operator=( basic_ostream&& rhs );
(2) (C + + 11以来)

1) The copy assignment operator is protected, and is deleted. Output streams are not CopyAssignable.

2) The move assignment operator exchanges all data members of the base class, except for rdbuf(), with rhs, as if by calling swap(*rhs). This move assignment operator is protected: it is only called by the move assignment operators of the derived movable output stream classes std::basic_ofstream and std::basic_ostringstream, which know how to correctly move-assign the associated streambuffers.

[編集] パラメータ

rhs - the basic_ostream object from which to assign to *this

[編集]

#include <sstream>
#include <utility>
#include <iostream>
int main()
{
    std::ostringstream s;
//  std::cout = s;                             // ERROR: copy assignment operator is deleted
//  std::cout = std::move(s);                  // ERROR: move assignment operator is protected
    s = std::move(std::ostringstream() << 42); // OK, moved through derived
    std::cout << s.str() << '\n';
}

Output:

42