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std::basic_ifstream::is_open

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< cpp‎ | io‎ | basic ifstream

 
 
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
Original:
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
Original:
Types
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streamoff
streamsize
fpos
エラーカテゴリインターフェース
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_ifstream
メンバ関数
Original:
Member functions
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basic_ifstream::basic_ifstream
basic_ifstream::operator=(C++11)
basic_ifstream::swap(C++11)
basic_ifstream::rdbuf
ファイル操作
Original:
File operations
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basic_ifstream::is_open
basic_ifstream::open
basic_ifstream::close
非メンバ関数
Original:
Non-member functions
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basic_ifstream::swap(std::basic_ifstream)(C++11)
 
bool is_open() const;
ファイルストリームかどうかをチェックするには、関連付けられたファイルを持っている.
Original:
Checks if the file stream has an associated file.
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効果的にrdbuf()->is_open()呼び出し.
Original:
Effectively calls rdbuf()->is_open().
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目次

[編集] パラメータ

(なし)
Original:
(none)
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[編集] 値を返します

trueファイルストリームfalseそうでない場合は、関連付けられたファイルを持っている場合
Original:
true if the file stream has an associated file, false otherwise
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[編集]

[編集] も参照してください

ストリームとファイルと関連付け、それを開きます
Original:
opens a file and associates it with the stream
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(パブリックメンバ関数) [edit]
関連付けられているファイルを閉じます
Original:
closes the associated file
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(パブリックメンバ関数) [edit]