std::front_inserter

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

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)

 

Elemento definito nell'header <iterator>
template<class Container > std::front_insert_iterator<Container> front_inserter( Container& c);

front_inserter è un modello di funzione di convenienza che costruisce un std::front_insert_iteratorc per il contenitore con il tipo dedotto dal tipo dell'argomento.

Original:

front_inserter is a convenience function template that constructs a std::front_insert_iterator for the container c with the type deduced from the type of the argument.

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Parametri

c

-

contenitore che supporta un'operazione push_front Original: container that supports a push_front operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

Un std::front_insert_iterator che può essere usato per aggiungere elementi all'inizio del c contenitore

Original:

A std::front_insert_iterator which can be used to add elements to the beginning of the container c

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Possibile implementazione

template<class Container >std::front_insert_iterator<Container> front_inserter( Container& c){returnstd::front_insert_iterator<Container>(c);}

Esempio

#include <iostream>#include <deque>#include <algorithm>#include <iterator>int main(){std::deque<int> v{1,2,3,4,5,6,7,8,9,10};std::fill_n(std::front_inserter(v), 3, -1);for(int n : v)std::cout<< n <<' ';}

Output:

-1 -1 -1 1 2 3 4 5 6 7 8 9 10

Vedi anche

front_insert_iterator	Adattatore iteratore per l'inserimento nella parte anteriore di un contenitore Original: iterator adaptor for insertion at the front of a container The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe template)
back_inserter	crea un std::back_insert_iterator di tipo derivato dalla tesi Original: creates a std::back_insert_iterator of type inferred from the argument The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione di modello)
inserter	crea un std::insert_iterator di tipo derivato dalla tesi Original: creates a std::insert_iterator of type inferred from the argument The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione di modello)