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      std::unique_ptr::operator[]

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      <metanoindex/>

       
      C++
       
      Biblioteca de utilitários
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      Os operadores relacionais
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      Relational operators
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      rel_ops::operator!=
      rel_ops::operator>
      rel_ops::operator<=
      rel_ops::operator>=
      Pares e tuplas
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      Pairs and tuples
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      Troque, avançar e avançar
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      Swap, forward and move
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      (C++11)
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      Gerenciamento de memória dinâmica
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      Alocadores
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      Allocators
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      Uninitialized armazenamento
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      Uninitialized storage
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      Ponteiros inteligentes
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      Garbage collection support
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      std :: unique_ptr
      Funções de membro
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      Member functions
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      unique_ptr::unique_ptr
      unique_ptr::~unique_ptr
      unique_ptr::operator=
      Modificadores
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      unique_ptr::release
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      Observadores
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      unique_ptr::get
      unique_ptr::get_deleter
      unique_ptr::operator bool
      unique_ptr::operator*
      unique_ptr::operator->
      unique_ptr::operator[]
      Não-membros funções
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      Non-member functions
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      <tbody> </tbody>
      T& operator[](size_t i) const;
      		 (desde C++11)
      operator[] fornece acesso a elementos de uma matriz gerido por um unique_ptr.
      Original:
      operator[] provides access to elements of an array managed by a unique_ptr.
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      O i parâmetro é necessário para ser um índice de matriz válido.
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      The parameter i is required to be a valid array index.
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      Parâmetros

      i -
      o índice do elemento a ser retornado
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      the index of the element to be returned
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      Valor de retorno

      Retorna o elemento no índice i, ou seja, get()[i].
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      Returns the element at index i, i.e. get()[i].
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      Exemplo

      #include <iostream>
#include <memory>

int main() 
{
    const int size = 10; 
    std::unique_ptr<int[]> fact(new int[size]);

    for (int i = 0; i < size; ++i) {
        fact[i] = (i == 0) ? 1 : i * fact[i-1];
    }

    for (int i = 0; i < size; ++i) {
        std::cout << i << ": " << fact[i] << '\n';
    }
}

      Saída: 

      0: 1
1: 1
2: 2
3: 6
4: 24
5: 120
6: 720
7: 5040
8: 40320
9: 362880

      Veja também
      retorna um ponteiro para o objeto gerenciado
      Original:
      returns a pointer to the managed object
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      (função pública membro) [edit]