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std::back_inserter

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C++
 
Biblioteca Iterator
Primitivas iterador
Original:
Iterator primitives
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Adaptadores de iterador
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Iterator adaptors
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Iteradores fluxo
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Stream iterators
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Operações iterador
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Iterator operations
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(C++11)
(C++11)
Variar de acesso
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Range access
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(C++11)
(C++11)
 
Definido no cabeçalho <iterator>
template< class Container >
std::back_insert_iterator<Container> back_inserter( Container& c);
back_inserter é um modelo de função de conveniência que constrói uma std::back_insert_iterator para o c recipiente com o tipo de deduzida a partir do tipo do argumento.
Original:
back_inserter is a convenience function template that constructs a std::back_insert_iterator for the container c with the type deduced from the type of the argument.
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Índice

[editar] Parâmetros

c -
recipiente que suporta uma operação push_back
Original:
container that supports a push_back operation
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[editar] Valor de retorno

A std::back_insert_iterator que pode ser usado para adicionar elementos ao final do c recipiente
Original:
A std::back_insert_iterator which can be used to add elements to the end of the container c
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[editar] Possível implementação

template< class Container >
std::back_insert_iterator<Container> back_inserter( Container& c)
{
    return std::back_insert_iterator<Container>(c);
}

[editar] Exemplo

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

Saída: 

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

[editar] Veja também
adaptador iterador para inserção na extremidade de um recipiente
Original:
iterator adaptor for insertion at the end of a container
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(modelo de classe) [edit]
cria um std::front_insert_iterator do tipo inferido a partir do argumento
Original:
creates a std::front_insert_iterator of type inferred from the argument
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(modelo de função) [edit]
cria um std::insert_iterator do tipo inferido a partir do argumento
Original:
creates a std::insert_iterator of type inferred from the argument
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(modelo de função) [edit]
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