Namespace
Varianti

std::fpos

Da cppreference.com.
< cpp‎ | io

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
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Astrazioni
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Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File 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(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
Defined in header <ios>
template< class State >
class fpos;
Specializzazioni del modello di classe std::fpos identificare le posizioni assolute in un flusso o in un file. Ogni oggetto di tipo fpos mantiene la posizione del byte nel flusso (tipicamente come membro privato di std::streamoff tipo) e lo stato corrente di spostamento, un valore di tipo State (tipicamente 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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Quattro specializzazioni di std::fpos sono previsti:
Original:
Four specializations of std::fpos are provided:
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Defined in header <ios>
Tipo
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>

[modifica] Membri funzioni

ottiene / imposta il valore dello stato spostamento
Original:
gets/sets the value of the shift state
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(membro pubblico funzione)
Inoltre, le seguenti funzioni membro e operatori devono essere forniti, anche se è specificato se membri o terzi.
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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  • Un costruttore che accetta un argomento di tipo int.
    Original:
    A constructor that accepts an argument of type int.
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  • Un costruttore che accetta un argomento di tipo std::streamoff. Questo costruttore deve anche accettare il std::streamoff(-1) valore speciale: il std::fpos costruito in questo modo viene restituito da alcune operazioni di flusso per indicare gli errori.
    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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  • Un operatore di conversione che converte fpos al std::streamoff con il valore uguale all'offset da std::fpos(0).
    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== che confronta due oggetti di std::fpos tipo e restituisce un valore di tipo convertibile 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!= che confronta due oggetti di std::fpos tipo e restituisce un valore di tipo convertibile 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+ e operator+= che può aggiungere alla std::streamoff std::fpos
    Original:
    operator+ and operator+= which can add std::streamoff to std::fpos
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  • operator- e operator-= che può sottrarre std::streamoff da un std::fpos
    Original:
    operator- and operator-= which can subtract std::streamoff from an std::fpos
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  • operator- che può sottrarre due oggetti di tipo std::fpos producendo una std::streamoff
    Original:
    operator- which can subtract two objects of type std::fpos producing an std::streamoff
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[modifica] Vedi anche

rappresenta il relativo file / flusso di posizione (offset da fpos), sufficiente per rappresentare qualsiasi dimensione di file
Original:
represents relative file/stream position (offset from fpos), sufficient to represent any file size
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(typedef)
restituisce l'indicatore di posizione di uscita
Original:
returns the output position indicator
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(membro pubblico of std::basic_ostream funzione) [edit]
imposta l'indicatore di posizione di uscita
Original:
sets the output position indicator
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(membro pubblico of std::basic_ostream funzione) [edit]
ottiene l'indicatore di posizione del file
Original:
gets the file position indicator
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(funzione) [edit]