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std::basic_fstream::is_open

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< cpp‎ | io‎ | basic fstream

 
 
Input / Output-Bibliothek
I / O-Manipulatoren
C-style I / O
Puffern
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Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(veraltet)
Streams
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Streams
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Abstraktionen
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Datei-I / O
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File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
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Array I/O
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istrstream(veraltet)
ostrstream(veraltet)
strstream(veraltet)
Types
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Types
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streamoff
streamsize
fpos
Fehler Kategorie Schnittstelle
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_fstream
Member-Funktionen
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Member functions
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basic_fstream::basic_fstream
basic_fstream::operator=(C++11)
basic_fstream::swap(C++11)
basic_fstream::rdbuf
Datei-Operationen
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File operations
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basic_fstream::is_open
basic_fstream::open
basic_fstream::close
Non-Member-Funktionen
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Non-member functions
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basic_fstream::swap(std::basic_fstream)(C++11)
 
bool is_open() const;
Prüft, ob die Datei-Stream hat eine zugehörige Datei .
Original:
Checks if the file stream has an associated file.
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Effektiv nennt rdbuf()->is_open() .
Original:
Effectively calls rdbuf()->is_open().
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Inhaltsverzeichnis

[Bearbeiten] Parameter

(None)
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(none)
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[Bearbeiten] Rückgabewert

true, wenn die Datei-Stream eine zugehörige Datei hat, false anders
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true if the file stream has an associated file, false otherwise
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[Bearbeiten] Beispiel

[Bearbeiten] Siehe auch

öffnet eine Datei und ordnet sie mit dem Strom
Original:
opens a file and associates it with the stream
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(öffentliche Elementfunktion) [edit]
schließt die zugehörige Datei
Original:
closes the associated file
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(öffentliche Elementfunktion) [edit]