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std::basic_streambuf::pbump

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< cpp‎ | io‎ | basic streambuf

 
 
Entrada / salida de la biblioteca
I / O manipuladores
C-estilo I / O
Buffers
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleto)
Arroyos
Original:
Streams
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Abstracciones
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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
Cadena de I / O
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String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz I / O
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Array I/O
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istrstream(obsoleto)
ostrstream(obsoleto)
strstream(obsoleto)
Tipos
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Types
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streamoff
streamsize
fpos
Error interfaz categoría
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Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_streambuf
Las funciones públicas miembros
Original:
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
Posicionamiento
Original:
Positioning
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basic_streambuf::pubsetbuf
basic_streambuf::pubseekoff
basic_streambuf::pubseekpos
basic_streambuf::pubsync
Obtenga zona
Original:
Get area
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basic_streambuf::in_avail
basic_streambuf::snextc
basic_streambuf::sbumpc
basic_streambuf::sgetc
basic_streambuf::sgetn
Ponga zona
Original:
Put area
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basic_streambuf::sputc
basic_streambuf::sputn
Dos puntos
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Putback
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basic_streambuf::sputbackc
basic_streambuf::sungetc
Protegido funciones miembro
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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
Posicionamiento
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Positioning
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basic_streambuf::setbuf
basic_streambuf::seekoff
basic_streambuf::seekpos
basic_streambuf::sync
Obtenga zona
Original:
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
Ponga zona
Original:
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
Dos puntos
Original:
Putback
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basic_streambuf::pbackfail
 
void pbump( int count );
Cambia de posición el puntero del poner (pptr()) por caracteres count, donde count pueden ser positivos o negativos. No se aceptan cheques se hacen para mover el puntero fuera del área puso [pbase(), epptr()) .
Original:
Repositions the put pointer (pptr()) by count characters, where count may be positive or negative. No checks are done for moving the pointer outside the put area [pbase(), epptr()).
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Si el puntero está avanzada y luego overflow() se llama para limpiar el área sometida a la secuencia de caracteres asociados, el efecto es que los personajes extras count si valores definidos se imprimen .
Original:
If the pointer is advanced and then overflow() is called to flush the put area to the associated character sequence, the effect is that extra count characters with undefined values are output.
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Contenido

[editar] Parámetros

count -
número para agregar a poner el puntero
Original:
number to add to the put pointer
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[editar] Valor de retorno

(Ninguno)
Original:
(none)
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[editar] Ejemplo

#include <iostream>
#include <string>
#include <fstream>
 
struct showput_streambuf : std::filebuf
{
    using std::filebuf::pbump; // expose protected
    std::string showput() const {
        return std::string(pbase(), pptr());
    }
};
 
int main()
{
    showput_streambuf mybuf;
    mybuf.open("test.txt", std::ios_base::out);
    std::ostream str(&mybuf);
    str << "This is a test" << std::flush << "1234";
    std::cout << "The put area contains: " << mybuf.showput() << '\n';
    mybuf.pbump(10);
    std::cout << "after pbump(10), it contains " << mybuf.showput() << '\n';
}

Output:

The put area contains: 1234
after pbump(10), it contains 1234 is a test

[editar] Ver también

avanza el puntero siguiente en la secuencia de entrada
Original:
advances the next pointer in the input sequence
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(protegidos función miembro) [edit]