std::front_insert_iterator - cppreference.com

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Definido no cabeçalho `<iterator>`

`template< class Container > class front_insert_iterator : public std::iterator< std::output_iterator_tag, void,void,void,void >`

std::front_insert_iterator é um iterador de saída que prepends elementos para um recipiente para o qual foi construído, utilizando a função do recipiente membro push_front() sempre que o iterador (se dereferenced ou não) é atribuído. Incrementando a std::front_insert_iterator é um não-op.

Original:

std::front_insert_iterator is an output iterator that prepends elements to a container for which it was constructed, using the container's push_front() member function whenever the iterator (whether dereferenced or not) is assigned to. Incrementing the std::front_insert_iterator is a no-op.

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Tipos de membro


Tipo de membro 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

`container_type`	`Container`

Funções de membro

Predefinição:cpp/iterator/inserter/dsc operator++


(constructor)	constrói um novo `front_insert_iterator` Original: constructs a new `front_insert_iterator` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro) [edit]

operator=	insere um objecto para o recipiente associado Original: inserts an object into the associated container The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro) [edit]

operator*	no-op (função pública membro) [edit]

Objetos Membros


Nome do membro Original: Member name The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition

`container` (protegido)	um ponteiro de `Container` tipo Original: a pointer of type `Container` The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Herdado de std::iterator

Member types


Tipo de membro 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`

Exemplo

#include <vector>
#include <deque>
#include <iostream>
#include <iterator>
#include <algorithm>
int main()
{
    std::vector<int> v{1,2,3,4,5};
    std::deque<int> d;
    std::copy(v.begin(), v.end(),
              std::front_insert_iterator<std::deque<int>>(d)); // or std::front_inserter(d)
    for(int n : d)
        std::cout << n << ' ';
    std::cout << '\n';
}

Saída:

Veja também


front_inserter	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função) [edit]

back_insert_iterator	adaptador iterador para inserção na extremidade de um recipiente Original: iterator adaptor for insertion at the end 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. (modelo de classe) [edit]

insert_iterator	adaptador iterador para inserção dentro de um recipiente Original: iterator adaptor for insertion into a container The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de classe) [edit]