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    std::fpos

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    <metanoindex/>

     
    C++
     
    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
    Original:
    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    File I / O
    Original:
    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
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    Error category interface
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    iostream_category(C++11)
    io_errc(C++11)
     
    <tbody> </tbody>
    Elemento definito nell'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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    Definizione nell'header <ios>
    Tipo
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    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>

    Membri funzioni
    ottiene / imposta il valore dello stato spostamento
    Original:
    gets/sets the value of the shift state
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    (metodo pubblico)
    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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    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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    (metodo pubblico) [modifica]
    imposta l'indicatore di posizione di uscita
    Original:
    sets the output position indicator
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    (metodo pubblico) [modifica]
    ottiene l'indicatore di posizione del file
    Original:
    gets the file position indicator
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    (funzione) [modifica]