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std::unique_ptr::operator[]

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< cpp‎ | memory‎ | unique ptr

 
 
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Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
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Funciones variadic
Fecha y hora
Objetos Function
initializer_list(C++11)
bitset
hash(C++11)
Operadores relacionales
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Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares y tuplas
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Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Cambiar, hacia adelante y mover
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Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
Gestión de memoria dinámica
Bajo la gestión de memoria de nivel
Los asignadores
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Allocators
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allocator
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allocator_arg_t(C++11)
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uses_allocator(C++11)
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Inicializar el almacenamiento
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Uninitialized storage
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uninitialized_copy
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Punteros inteligentes
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Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(obsoleto)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Garbage soporte colección
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Garbage collection support
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undeclare_reachable(C++11)
declare_no_pointers(C++11)
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Varios
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Miscellaneous
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C Library
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C Library
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std :: unique_ptr
Las funciones miembro
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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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Modifiers
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unique_ptr::release
unique_ptr::reset
unique_ptr::swap
Los observadores
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Observers
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unique_ptr::get
unique_ptr::get_deleter
unique_ptr::operator bool
unique_ptr::operator*
unique_ptr::operator->
unique_ptr::operator[]
Terceros funciones
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Non-member functions
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operator==
operator!=
operator<
operator>
operator<=
operator>
operator>=
std::swap
std::hash
 
T& operator[](size_t i) const;
(desde C++11)
operator[] proporciona acceso a elementos de una matriz administrada por un unique_ptr .
Original:
operator[] provides access to elements of an array managed by a unique_ptr.
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El i parámetro es necesario para ser un índice de matriz válida .
Original:
The parameter i is required to be a valid array index.
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Contenido

[editar] Parámetros

i -
el índice del elemento a ser devuelto
Original:
the index of the element to be returned
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[editar] Valor de retorno

Devuelve el elemento en el índice i, es decir get()[i] .
Original:
Returns the element at index i, i.e. get()[i].
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[editar] Ejemplo

#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';
    }
}

Output:

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

[editar] Ver también

devuelve un puntero al objeto gestionado
Original:
returns a pointer to the managed object
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(miembro público función) [edit]