std::ostream_iterator

 

C++

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Espressioni regolari (C++11)

Operazioni atomicche (C++11)

Multithreading (C++11)

 

Biblioteca Iterator

Primitive iteratori Original: Iterator primitives The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
iterator_traits
input_iterator_tag output_iterator_tag forward_iterator_tag bidirectional_iterator_tag random_access_iterator_tag
iterator
Adattatori iteratori Original: Iterator adaptors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
reverse_iterator
move_iterator (C++11) back_insert_iterator front_insert_iterator insert_iterator	make_move_iterator (C++11) back_inserter front_inserter inserter
Flusso iteratori Original: Stream iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Operazioni di iteratori Original: Iterator operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
advance
distance
prev (C++11)
next (C++11)
Intervallo accesso Original: Range access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
begin (C++11)
end (C++11)

 

std::ostream_iterator

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

ostream_iterator::ostream_iterator

ostream_iterator::~ostream_iterator

ostream_iterator::operator=

ostream_iterator::operator*

ostream_iterator::operator++ ostream_iterator::operator++(int)

 

Elemento definito nell'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 è un passaggio singolo iteratore di output che scrive gli oggetti successivi di tipo T nell'oggetto std::basic_ostream per il quale è stato costruito, utilizzando operator<<. Opzionale delimitatore di stringa viene scritto nel flusso di output dopo ogni operazione di scrittura. L'operazione di scrittura viene eseguita quando l'iteratore (se referenziato o meno) è assegnato. Incremento del std::ostream_iterator è 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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In una tipica implementazione, i membri dei soli dati di std::ostream_iterator sono un puntatore al std::basic_ostream associato e un puntatore al primo carattere della stringa delimitatore.

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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Durante la scrittura di caratteri, std::ostreambuf_iterator è più efficiente, dato che evita il sovraccarico di costruire e distruggendo l'oggetto sentinella una volta per carattere.

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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Membri tipi

Membro tipo Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
char_type	CharT
traits_type	Traits
ostream_type	std::basic_ostream<CharT, Traits>

Membri funzioni

(costruttore)	costruisce un nuovo ostream_iterator Original: constructs a new ostream_iterator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
(destructor)	distrugge un ostream_iterator Original: destructs an ostream_iterator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
operator=	scrive un oggetto alla sequenza uscita associata Original: writes a object to the associated output sequence The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
operator*	no-op (metodo pubblico)
operator++ operator++(int)	no-op (metodo pubblico)

Inherited from std::iterator

Member types

Membro tipo Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
value_type	void
difference_type	void
pointer	void
reference	void
iterator_category	std::output_iterator_tag

Esempio

#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

Vedi anche

ostreambuf_iterator	uscita iteratore che scrive std::basic_streambuf Original: output iterator that writes to std::basic_streambuf The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe template)
istream_iterator	iteratore di input che legge da std::basic_istream Original: input iterator that reads from std::basic_istream The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe template)