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std::front_inserter

Da cppreference.com.
< cpp‎ | iterator

 
 
Biblioteca Iterator
Primitive iteratori
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
Adattatori iteratori
Original:
Iterator adaptors
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reverse_iterator
make_move_iterator(C++11)
back_inserter
front_inserter
inserter
Flusso iteratori
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Stream iterators
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istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Operazioni di iteratori
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Iterator operations
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advance
distance
prev(C++11)
next(C++11)
Intervallo accesso
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Range access
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begin(C++11)
end(C++11)
 
Defined in 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_iterator c 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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Indice

[modifica] Parametri

c -
contenitore che supporta un'operazione push_front
Original:
container that supports a push_front operation
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[modifica] 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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[modifica] Possibile implementazione

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

[modifica] 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

[modifica] Vedi anche

Adattatore iteratore per l'inserimento nella parte anteriore di un contenitore
Original:
iterator adaptor for insertion at the front of a container
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(classe template) [edit]
crea un std::back_insert_iterator di tipo derivato dalla tesi
Original:
creates a std::back_insert_iterator of type inferred from the argument
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(funzione di modello) [edit]
crea un std::insert_iterator di tipo derivato dalla tesi
Original:
creates a std::insert_iterator of type inferred from the argument
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(funzione di modello) [edit]