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std::back_insert_iterator

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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)
 
std::back_insert_iterator
Funções de membro
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Member functions
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back_insert_iterator::back_insert_iterator
back_insert_iterator::operator=
back_insert_iterator::operator*
back_insert_iterator::operator++
back_insert_iterator::operator++(int)
 
Definido no cabeçalho <iterator>
template< class Container >

class back_insert_iterator : public std::iterator< std::output_iterator_tag,

                                                   void,void,void,void >
std::back_insert_iterator é um OutputIterator que acrescenta a um recipiente para o qual foi construído, utilizando a função do recipiente membro push_back() sempre que o iterador (se dereferenced ou não) é atribuído. Incrementando a std::back_insert_iterator é um não-op.
Original:
std::back_insert_iterator is an OutputIterator that appends to a container for which it was constructed, using the container's push_back() member function whenever the iterator (whether dereferenced or not) is assigned to. Incrementing the std::back_insert_iterator is a no-op.
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Índice

[editar] Tipos de membro

Tipo de membro
Original:
Member type
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 Definition
container_type Container

[editar] Funções de membro

Predefinição:cpp/iterator/inserter/dsc operator++
constrói um novo back_insert_iterator
Original:
constructs a new back_insert_iterator
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(função pública membro) [edit]
insere um objecto para o recipiente associado
Original:
inserts an object into the associated container
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(função pública membro) [edit]
no-op
(função pública membro) [edit]

[editar] Objetos Membros

Nome do membro
Original:
Member name
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 Definition
container (protegido)
um ponteiro de Container* tipo
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a pointer of type Container*
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Herdado de std::iterator

Member types

Tipo de membro
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Member type
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 Definition
value_type void
difference_type void
pointer void
reference void
iterator_category std::output_iterator_tag

[editar] Exemplo

#include <iostream>
#include <iterator>
#include <algorithm>
#include <cstdlib>
int main()
{
    std::vector<int> v;
    std::generate_n(std::back_insert_iterator<std::vector<int>>(v), // can be simplified
                    10, [](){return std::rand()%10;});        // with std::back_inserter
    for(int n : v)
        std::cout << n << ' ';
    std::cout << '\n';
}

Saída: 

3 6 7 5 3 5 6 2 9 1

[editar] Veja também
cria um std::back_insert_iterator do tipo inferido a partir do argumento
Original:
creates a std::back_insert_iterator of type inferred from the argument
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(modelo de função) [edit]
adaptador iterador para inserção na parte da frente de um recipiente
Original:
iterator adaptor for insertion at the front of a container
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(modelo de classe) [edit]
adaptador iterador para inserção dentro de um recipiente
Original:
iterator adaptor for insertion into a container
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(modelo de classe) [edit]
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