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std::fpos

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< cpp‎ | io

 
 
Input / Output-Bibliothek
I / O-Manipulatoren
C-style I / O
Puffern
Original:
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)
 
Defined in header <ios>
template< class State >
class fpos;
Spezialisierungen der Klassen-Template std::fpos identifizieren absoluten Positionen in einem Strom oder in einer Datei. Jedes Objekt vom Typ fpos hält die Byteposition in dem Strom (typischerweise als private Element vom Typ std::streamoff) und den aktuellen Schaltzustand ein Wert vom Typ State (typischerweise std::mbstate_t) .
Original:
Specializations of the class template std::fpos identify absolute positions in a stream or in a file. Each object of type fpos holds the byte position in the stream (typically as a private member of type std::streamoff) and the current shift state, a value of type State (typically std::mbstate_t).
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Vier Spezialisierungen std::fpos sind vorgesehen:
Original:
Four specializations of std::fpos are provided:
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Defined in header <ios>
Type
Original:
Type
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Definition
streampos std::fpos<std::char_traits<char>::state_type>
u16streampos std::fpos<std::char_traits<char16_t>::state_type>
u32streampos std::fpos<std::char_traits<char32_t>::state_type>
wstreampos std::fpos<std::char_traits<wchar_t>::state_type>

[Bearbeiten] Member-Funktionen

empfängt / setzt den Wert der Verschiebung Zustand
Original:
gets/sets the value of the shift state
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(öffentliche Elementfunktion)
Darüber hinaus müssen die folgenden Member-Funktionen und Operatoren zur Verfügung gestellt werden, obwohl es nicht angegeben ist, ob sie Mitglieder oder Nicht-Mitglied sind .
Original:
In addition, the following member functions and operators must be provided, although it's unspecified if they are members or non-member.
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  • Ein Konstruktor, der ein Argument vom Typ int akzeptiert .
    Original:
    A constructor that accepts an argument of type int.
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  • Ein Konstruktor, der ein Argument vom Typ std::streamoff. Dieser Konstruktor muss auch akzeptieren, den besonderen Wert std::streamoff(-1): die std::fpos auf diese Weise konstruiert wird von einigen Stream zurückgegeben werden, um Fehler anzuzeigen .
    Original:
    A constructor that accepts an argument of type std::streamoff. This constructor must also accept the special value std::streamoff(-1): the std::fpos constructed in this manner is returned by some stream operations to indicate errors.
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  • Eine Umwandlung Operator, fpos umwandelt std::streamoff mit dem Wert gleich dem von std::fpos(0) Offset .
    Original:
    A conversion operator that converts fpos to std::streamoff with the value equal to the offset from std::fpos(0).
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  • operator== dass vergleicht zwei Objekte vom Typ std::fpos und gibt einen Wert vom Typ konvertierbar bool
    Original:
    operator== that compares two objects of type std::fpos and returns a value of type convertible to bool
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  • operator!= dass vergleicht zwei Objekte vom Typ std::fpos und gibt einen Wert vom Typ konvertierbar bool
    Original:
    operator!= that compares two objects of type std::fpos and returns a value of type convertible to bool
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  • operator+ und operator+= die std::streamoff hinzufügen können, um std::fpos
    Original:
    operator+ and operator+= which can add std::streamoff to std::fpos
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  • operator- und operator-= was kann std::streamoff von einem std::fpos subtrahieren
    Original:
    operator- and operator-= which can subtract std::streamoff from an std::fpos
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  • operator- was können zwei Objekte vom Typ std::fpos Herstellung eines std::streamoff subtrahieren
    Original:
    operator- which can subtract two objects of type std::fpos producing an std::streamoff
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[Bearbeiten] Siehe auch

stellt relativen Datei / stream Position (Offset von FPOS) ausreichen, um eine beliebige Datei Größe darstellen
Original:
represents relative file/stream position (offset from fpos), sufficient to represent any file size
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(typedef)
gibt die Ausgabe Stellungsanzeige
Original:
returns the output position indicator
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(öffentliche Elementfunktion of std::basic_ostream) [edit]
setzt den Ausgang Stellungsanzeige
Original:
sets the output position indicator
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(öffentliche Elementfunktion of std::basic_ostream) [edit]
erhält die Datei Stellungsanzeige
Original:
gets the file position indicator
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(Funktion) [edit]