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    std::basic_streambuf::uflow

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    <metanoindex/>

     
    C++
     
    D'entre / sortie de bibliothque
    I / O manipulateurs
    C-style I / O
    Tampons
    Original:
    Buffers
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    basic_streambuf
    basic_filebuf
    basic_stringbuf
    strstreambuf (obsolte)
    Cours d'eau
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    Streams
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    Abstractions
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    Abstractions
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    ios_base
    basic_ios
    basic_istream
    basic_ostream
    basic_iostream
    Fichier E / O
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    File I/O
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    basic_ifstream
    basic_ofstream
    basic_fstream
    Chane I / O
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    String I/O
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    basic_istringstream
    basic_ostringstream
    basic_stringstream
    Tableau I / O
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    Array I/O
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    istrstream (obsolte)
    ostrstream (obsolte)
    strstream (obsolte)
    Types
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    Types
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    streamoff
    streamsize
    fpos
    Interface catgorie d'erreur
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    Error category interface
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    iostream_category (C++11)
    io_errc (C++11)
     
    std::basic_streambuf
    Fonctions membres publiques
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    Public member functions
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    basic_streambuf::~basic_streambuf
    Locales
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    Locales
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    basic_streambuf::pubimbue
    basic_streambuf::getloc
    Positionnement
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    Positioning
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    basic_streambuf::pubsetbuf
    basic_streambuf::pubseekoff
    basic_streambuf::pubseekpos
    basic_streambuf::pubsync
    Obtenez rgion
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    Get area
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    basic_streambuf::in_avail
    basic_streambuf::snextc
    basic_streambuf::sbumpc
    basic_streambuf::sgetc
    basic_streambuf::sgetn
    Mettez rgion
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    Put area
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    basic_streambuf::sputc
    basic_streambuf::sputn
    Putback
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    Putback
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    basic_streambuf::sputbackc
    basic_streambuf::sungetc
    Protg fonctions membres
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    Protected member functions
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    basic_streambuf::basic_streambuf
    basic_streambuf::operator= (C++11)
    basic_streambuf::swap (C++11)
    Locales
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    Locales
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    basic_streambuf::imbue
    Positionnement
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    Positioning
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    basic_streambuf::setbuf
    basic_streambuf::seekoff
    basic_streambuf::seekpos
    basic_streambuf::sync
    Obtenez rgion
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    Get area
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    basic_streambuf::showmanyc
    basic_streambuf::underflow
    basic_streambuf::uflow
    basic_streambuf::xsgetn
    basic_streambuf::eback
    basic_streambuf::gptr
    basic_streambuf::egptr
    basic_streambuf::gbump
    basic_streambuf::setg
    Mettez rgion
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    Put area
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    basic_streambuf::xsputn
    basic_streambuf::overflow
    basic_streambuf::pbase
    basic_streambuf::pptr
    basic_streambuf::epptr
    basic_streambuf::pbump
    basic_streambuf::setp
    Putback
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    Putback
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    basic_streambuf::pbackfail
     
    <tbody> </tbody>
    int_type uflow();
    En sorte que au moins un caractre est disponible dans la zone de saisie en mettant jour les pointeurs la zone d'entre (si ncessaire). En cas de succs renvoie la valeur de ce caractre et les progrs de la valeur de la' obtenir le pointeur d'un caractre. Le rendement de dfaillance traits::eof() .
    Original:
    Ensures that at least one character is available in the input area by updating the pointers to the input area (if needed). On success returns the value of that character and advances the value of the get pointer by one character. On failure returns traits::eof().
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    La fonction peut mettre jour gptr, egptr et eback pointeurs pour dfinir l'emplacement des donnes nouvellement charges (le cas chant). En cas d'chec, la fonction veille ce que soit gptr() == nullptr ou gptr() == egptr .
    Original:
    The function may update gptr, egptr and eback pointers to define the location of newly loaded data (if any). On failure, the function ensures that either gptr() == nullptr or gptr() == egptr.
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    La version classe de base de la fonction appelle underflow. Les classes drives peuvent substituer cette fonction pour permettre aux mises jour de la zone get dans le cas de l'puisement .
    Original:
    The base class version of the function calls underflow. The derived classes may override this function to allow updates to the get area in the case of exhaustion.
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    Paramtres

    (Aucun)
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    (none)
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    Retourne la valeur

    La valeur du caractre qui a t point par le pointeur se' avant qu'il ne soit avanc d'un ou traits::eof() autrement .
    Original:
    The value of the character that was pointed to by the get pointer before it was advanced by one, or traits::eof() otherwise.
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    La version classe de base de la fonction retourne la valeur retourne par underflow .
    Original:
    The base class version of the function returns the value returned by underflow.
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    Note

    Les fonctions publiques de std::streambuf appeler cette fonction que si gptr() == nullptr ou gptr() >= egptr() .
    Original:
    The public functions of std::streambuf call this function only if gptr() == nullptr or gptr() >= egptr().
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    Exemple

    This section is incomplete
    Reason: no example

    Voir aussi

    [
    virtuel
    Original:
    virtual
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    ]
    lit les caractres partir de la squence d'entre associe la zone d'obtention
    Original:
    reads characters from the associated input sequence to the get area
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    (fonction membre virtuelle protge) [edit]
    [
    virtuel
    Original:
    virtual
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    ]
    crit des caractres de la squence de sortie associ partir de la zone de vente
    Original:
    writes characters to the associated output sequence from the put area
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    (fonction membre virtuelle protge) [edit]
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