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std::ostream_iterator

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< cpp‎ | iterator

 
 
Biblioteca Iterator
Primitivas iterador
Original:
Iterator primitives
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iterator_traits
input_iterator_tag
output_iterator_tag
forward_iterator_tag
bidirectional_iterator_tag
random_access_iterator_tag
iterator
Adaptadores iterador
Original:
Iterator adaptors
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reverse_iterator
Iteradores Stream
Original:
Stream iterators
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istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Operaciones iterador
Original:
Iterator operations
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advance
distance
prev(C++11)
next(C++11)
Rango de acceso
Original:
Range access
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begin(C++11)
end(C++11)
 
std::ostream_iterator
Las funciones miembro
Original:
Member functions
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ostream_iterator::ostream_iterator
ostream_iterator::~ostream_iterator
ostream_iterator::operator=
ostream_iterator::operator*
ostream_iterator::operator++
ostream_iterator::operator++(int)
 
Defined in header <iterator>
template< class T,

          class CharT = char,
          class Traits = std::char_traits<charT>>
class ostream_iterator : public std::iterator<std::output_iterator_tag,

                                              void, void, void, void>
std::ostream_iterator es un iterador de salida de un solo paso que escribe objetos sucesivos de T tipo en el objeto std::basic_ostream para la que fue construido, utilizando operator<<. Opcional delimitador de cadena se escribe en el flujo de salida después de cada operación de escritura. La operación de escritura se lleva a cabo cuando el iterador (si desreferenciado o no) se asigna a. El incremento del std::ostream_iterator es un no-op .
Original:
std::ostream_iterator is a single-pass output iterator that writes successive objects of type T into the std::basic_ostream object for which it was constructed, using operator<<. Optional delimiter string is written to the output stream after every write operation. The write operation is performed when the iterator (whether dereferenced or not) is assigned to. Incrementing the std::ostream_iterator is a no-op.
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En una implementación típica, los miembros de datos sólo de std::ostream_iterator son un puntero a la std::basic_ostream asociado y un puntero al primer carácter en la cadena delimitadora .
Original:
In a typical implementation, the only data members of std::ostream_iterator are a pointer to the associated std::basic_ostream and a pointer to the first character in the delimiter string.
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Al escribir caracteres, std::ostreambuf_iterator es más eficiente, ya que evita la sobrecarga de la construcción y destruyendo el objeto centinela una vez por personaje .
Original:
When writing characters, std::ostreambuf_iterator is more efficient, since it avoids the overhead of constructing and destructing the sentry object once per character.
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Contenido

[editar] Tipos de miembros

Miembro de tipo
Original:
Member type
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Definition
char_type CharT
traits_type Traits
ostream_type std::basic_ostream<CharT, Traits>

[editar] Las funciones miembro

construye una nueva ostream_iterator
Original:
constructs a new ostream_iterator
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(miembro público función)
destructs un ostream_iterator
Original:
destructs an ostream_iterator
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(miembro público función)
escribe un objeto con la secuencia de salida asociado
Original:
writes a object to the associated output sequence
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(miembro público función)
no-op
(miembro público función)
no-op
(miembro público función)

Inherited from std::iterator

Member types

Miembro de tipo
Original:
Member type
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Definition
value_type void
difference_type void
pointer void
reference void
iterator_category std::output_iterator_tag

[editar] Ejemplo

#include <iostream>
#include <sstream>
#include <iterator>
#include <algorithm>
int main()
{
    std::istringstream str("0.1 0.2 0.3 0.4");
    std::partial_sum( std::istream_iterator<double>(str),
                      std::istream_iterator<double>(),
                      std::ostream_iterator<double>(std::cout, " "));
}

Output:

0.1 0.3 0.6 1

[editar] Ver también

salida iterador que escribe en std::basic_streambuf
Original:
output iterator that writes to std::basic_streambuf
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(clase de plantilla) [edit]
iterador de entrada que se lee de std::basic_istream
Original:
input iterator that reads from std::basic_istream
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(clase de plantilla) [edit]