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std::basic_stringbuf::basic_stringbuf

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< cpp‎ | io‎ | basic stringbuf

 
 
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
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
Cadena de I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz I / O
Original:
Array I/O
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istrstream(obsoleto)
ostrstream(obsoleto)
strstream(obsoleto)
Tipos
Original:
Types
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streamoff
streamsize
fpos
Error interfaz categoría
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_stringbuf
Las funciones públicas miembros
Original:
Public member functions
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basic_stringbuf::basic_stringbuf
basic_stringbuf::operator=(C++11)
basic_stringbuf::swap(C++11)
basic_stringbuf::str
Protegido funciones miembro
Original:
Protected member functions
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basic_stringbuf::underflow
basic_stringbuf::pbackfail
basic_stringbuf::overflow
basic_stringbuf::setbuf
basic_stringbuf::seekoff
basic_stringbuf::seekpos
Terceros funciones
Original:
Non-member functions
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swap(std::basic_stringbuf)(C++11)
 
explicit basic_stringbuf(std::ios_base::openmode which = std::ios_base::in
                                                       | std::ios_base::out);
(1)
explicit basic_stringbuf (const std::basic_string<CharT, traits, Allocator>& new_str,

                          std::ios_base::openmode which = std::ios_base::in

                                                        | std::ios_base::out);
(2)
basic_stringbuf(const basic_stringbuf& rhs) = delete;
(3)
basic_stringbuf(basic_stringbuf&& rhs);
(4) (desde C++11)
1)
Construye un objeto std::basic_stringbuf: inicializa la clase base llamando al constructor por defecto de std::basic_streambuf, inicializa la secuencia de caracteres con una cadena vacía, y establece el modo para which .
Original:
Constructs a std::basic_stringbuf object: initializes the base class by calling the default constructor of std::basic_streambuf, initializes the character sequence with an empty string, and sets the mode to which.
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2) .
Original:
Constructs a std::basic_stringbuf object by performing the same initialization as 1), followed by initializing the associated character sequence as if by calling
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3)
El constructor de copia se suprime std::basic_stringbuf no es CopyConstructible
Original:
The copy constructor is deleted; std::basic_stringbuf is not CopyConstructible
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4)
Move-construye un objeto std::basic_stringbuf moviendo todo el estado de otro objeto std::basic_stringbuf rhs, incluyendo la cadena asociada, la modalidad abierta, el lugar, y todo otro estado. Después del movimiento, los seis punteros de std::basic_streambuf en *this están garantizados para ser diferentes de los punteros correspondientes en el rhs-movido desde menos nulo .
Original:
Move-constructs a std::basic_stringbuf object by moving all state from another std::basic_stringbuf object rhs, including the associated string, the open mode, the locale, and all other state. After the move, the six pointers of std::basic_streambuf in *this are guaranteed to be different from the corresponding pointers in the moved-from rhs unless null.
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Contenido

[editar] Parámetros

new_str -
un basic_string utiliza para inicializar el buffer
Original:
a basic_string used to initialize the buffer
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rhs -
otro basic_stringbuf
Original:
another basic_stringbuf
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mode -
especifica el modo de transmisión abierta. Es el tipo de máscara de bits, las siguientes constantes son definidas:
Constant
Original:
Constant
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Explanation
app
buscan al final del flujo antes de cada escritura
Original:
seek to the end of stream before each write
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binary
abrir en modo binario
Original:
open in binary mode
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in
abierto para la lectura
Original:
open for reading
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out
abrir para escritura
Original:
open for writing
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trunc
descartar el contenido de la corriente cuando se abre
Original:
discard the contents of the stream when opening
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ate
buscar al extremo de corriente inmediatamente después de abierto
Original:
seek to the end of stream immediately after open
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Original:
specifies stream open mode. It is bitmask type, the following constants are defined:
Constant
Original:
Constant
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Explanation
app
buscan al final del flujo antes de cada escritura
Original:
seek to the end of stream before each write
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binary
abrir en modo binario
Original:
open in binary mode
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in
abierto para la lectura
Original:
open for reading
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out
abrir para escritura
Original:
open for writing
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trunc
descartar el contenido de la corriente cuando se abre
Original:
discard the contents of the stream when opening
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ate
buscar al extremo de corriente inmediatamente después de abierto
Original:
seek to the end of stream immediately after open
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[editar] Notas

Por lo general convocada por el constructor de std::basic_stringstream .
Original:
Typically called by the constructor of std::basic_stringstream.
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El nivel de soporte para los modos que no sean abiertas y std::ios_base::in std::ios_base::out varía entre implementaciones. C + 11 especifica explícitamente el apoyo a std::ios_base::ate en str() y en este constructor, pero std::ios_base::app, std::ios_base::trunc y std::ios_base::binary tener efectos diferentes en las distintas aplicaciones .
Original:
The level of support for the open modes other than std::ios_base::in and std::ios_base::out varies among implementations. C++11 explicitly specifies the support for std::ios_base::ate in str() and in this constructor, but std::ios_base::app, std::ios_base::trunc, and std::ios_base::binary have different effects on different implementations.
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[editar] Ejemplo

Demuestra una llamada al constructor de basic_stringbuf directamente .
Original:
Demonstrates calling the constructor of basic_stringbuf directly.
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#include <iostream>
#include <sstream>
int main()
{
    // default constructor (mode = in|out)
    std::stringbuf buf1;
    buf1.sputc('1');
    std::cout << &buf1 << '\n';
 
    // string constructor in at-end mode (C++11)
    std::stringbuf buf2("test", std::ios_base::in
                              | std::ios_base::out
                              | std::ios_base::ate);
    buf2.sputc('1');
    std::cout << &buf2 << '\n';
 
    // append mode test (results differ among compilers)
    std::stringbuf buf3("test", std::ios_base::in
                              | std::ios_base::out
                              | std::ios_base::app);
    buf3.sputc('1');
    buf3.pubseekpos(1);
    buf3.sputc('2');
    std::cout << &buf3 << '\n';
}

Output:

1
test1
est12 (Sun Studio) 2st1 (GCC)

[editar] Ver también

construye la corriente de cadena
Original:
constructs the string stream
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(miembro público of std::basic_stringstream función) [edit]