std::array

 

C++

Suporte ao Compilador

Freestanding and hosted

Linguagem

Headers da Biblioteca Standard

Requerimentos nomeados

Feature test macros (C++20)

Biblioteca de suporte de língua

Biblioteca de conceitos(C++20)

Biblioteca de diagnósticos

Biblioteca de utilitários em geral

Biblioteca de strings

Biblioteca de containers

Ranges library(C++20)

Biblioteca de iteradores

Biblioteca de algorítmos

Biblioteca numérica

Biblioteca de localizações

Biblioteca de input/output

Biblioteca de sistema de arquivo(C++17)

Biblioteca de expressões regulares(C++11)

Biblioteca de operações atômicas(C++11)

Biblioteca de suporte de thread(C++11)

Especificações Técnicas

Índice de symbolos

Bibliotecas externas

 

Recipientes biblioteca

array (C++11)

vector

deque

forward_list (C++11)

list

set

multiset

map

multimap

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

stack

queue

priority_queue

 

std::array

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

acesso. Elemento Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::at

array::operator[]

array::front

array::back

array::data

Iteradores Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::begin array::cbegin

array::end array::cend

array::rbegin array::crbegin

array::rend array::crend

Capacidade Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::empty

array::size

array::max_size

Modificadores Original: Modifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::fill

array::swap

Não-membros funções Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

get

swap

Classes auxiliares Original: Helper classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

tuple_size

tuple_element

 

Definido no cabeçalho <array>
template<     class T,     std::size_t N >struct array;		(desde C++11)

std::array é um contêiner que encapsula um array de tamanho constante.

Esta estrutura possui a mesma semântica de tipo agregado que o array estilo C. O tamanho e a eficiência do array<T,N>, para uma certa quantidade de elementos, são equivalentes ao array T[N] estilo C correspondente. A estrutura provê os benefícios de um contêiner padrão, tais como o próprio tamanho, suporte a atribuição, acesso randômico, iteradores, etc.

Há um caso especial para array de tamanho zero ((N == 0)). Nesse caso, array.begin()== array.end(), que é algum valor único. O efeito de chamar front() or back() ou back() em um array de tamanho zero é indefinido.

array é um agregado (não possui construtores nem membros privados ou protegidos), o que o permite usar aggregate-initialization.

Um array também pode ser usado como uma tupla de N elementos do mesmo tipo.

Tipos 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
value_type	T
size_type	size_t
difference_type	ptrdiff_t
reference	value_type&
const_reference	const value_type&
pointer	T*
const_pointer	const T*
iterator	RandomAccessIterator
const_iterator	Iterador constante acesso aleatório Original: Constant random access iterator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
reverse_iterator	std::reverse_iterator<iterator>
const_reverse_iterator	std::reverse_iterator<const_iterator>

Funções membro

acesso. Elemento Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
at	acessar o elemento especificado com verificação de limites Original: access specified element with bounds checking 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)
operator[]	acessar o elemento especificado Original: access specified element 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)
front	acesso ao primeiro elemento Original: access the first element 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)
back	access the last element (função pública membro)
data (C++11)	acesso directo para a matriz subjacente Original: direct access to the underlying array 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)
Iteradores Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
begin cbegin	retorna um iterador para o começo Original: returns an iterator to the beginning 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)
end cend	retorna um iterador para o fim Original: returns an iterator to the end 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)
rbegin crbegin	retorna um iterador inverso ao início Original: returns a reverse iterator to the beginning 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)
rend crend	retorna um iterador inverso até ao fim Original: returns a reverse iterator to the end 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)
Capacidade Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
empty	verifica se o recipiente estiver vazio Original: checks whether the container is empty 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)
size	devolve o número de elementos Original: returns the number of elements 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)
max_size	retorna o número máximo possível de elementos Original: returns the maximum possible number of elements 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)
Operações Original: Operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fill	encher o recipiente com o valor especificado Original: fill the container with specified value 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)
swap	Trocar o conteúdo Original: swaps the contents 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)

Não-membros funções

operator== operator!= operator< operator<= operator> operator>=	lexicographically compara os valores na array Original: lexicographically compares the values in the array 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)
std::get(std::array)	accesses an element of an array (modelo de função)
std::swap(std::array)	o algoritmo especializado std::swap Original: specializes the std::swap algorithm 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)

Classes auxiliares

std::tuple_size<std::array>	obtém o tamanho de um array Original: obtains the size of an array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (especialização modelo. classe)
std::tuple_element<std::array>	obtém o tipo dos elementos de array Original: obtains the type of the elements of array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (especialização modelo. classe)

Exemplo

#include <string>#include <iterator>#include <iostream>#include <algorithm>#include <array>   int main(){// construction uses aggregate initialization std::array<int, 3> a1{{1,2,3}};// double-braces required std::array<int, 3> a2 ={1, 2, 3};// except after = std::array<std::string, 2> a3 ={{std::string("a"), "b"}};   // container operations are supportedstd::sort(a1.begin(), a1.end());std::reverse_copy(a2.begin(), a2.end(), std::ostream_iterator<int>(std::cout, " "));   // ranged for loop is supportedfor(auto& s: a3)std::cout<< s <<' ';}

Saída:

3 2 1 a b