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std::basic_istream::swap

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

 
 
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
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(廃止予定)
ストリーム
Original:
Streams
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抽象化
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
ファイルI / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
文字列I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
アレイのI / O
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Array I/O
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istrstream(廃止予定)
ostrstream(廃止予定)
strstream(廃止予定)
タイプ
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Types
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streamoff
streamsize
fpos
エラーカテゴリインターフェース
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_istream
グローバルオブジェクト
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Global objects
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cin
wcin
メンバ関数
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Member functions
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basic_istream::basic_istream
basic_istream::~basic_istream
basic_istream::operator=(C++11)
書式付き入力
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Formatted input
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basic_istream::operator>>
書式なし入力
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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
ポジショニング
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Positioning
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basic_istream::tellg
basic_istream::seekg
その他
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Miscellaneous
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basic_istream::sync
basic_istream::swap(C++11)
メンバークラス
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Member classes
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basic_istream::sentry
非メンバ関数
Original:
Non-member functions
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operator>>(std::basic_istream)
 
protected:
void swap(basic_istream& rhs);
(C++11およびそれ以降)
basic_ios::swap(rhs)は、すべてのデータrdbuf()を除く基本クラスのメンバ、およびスワップgcount()*thisの間rhsカウンタの値を交換するために呼び出す。このスワップ機能が保護されています:それは、スワップ可能な入力ストリームクラスのスワップ機能によって呼び出されstd::basic_ifstreamstd::basic_istringstream、正しく関連付けstreambuffersを交換する方法を知っている.
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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[編集] パラメータ

rhs -
と交換するために、同じタイプの別のオブジェクトbasic_istream
Original:
different basic_istream object of the same type to swap with
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[編集]

#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