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std::unique_ptr::operator[]

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< cpp‎ | memory‎ | unique ptr

 
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
(C++11)
Operadores relacionales
Original:
Relational operators
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Pares y tuplas
Original:
Pairs and tuples
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(C++11)
Cambiar, hacia adelante y mover
Original:
Swap, forward and move
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(C++11)
(C++11)
(C++11)
 
Gestión de memoria dinámica
Bajo la gestión de memoria de nivel
Los asignadores
Original:
Allocators
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Inicializar el almacenamiento
Original:
Uninitialized storage
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Punteros inteligentes
Original:
Smart pointers
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(C++11)
(C++11)
(C++11)
(obsoleto)
(C++11)
Garbage soporte colección
Original:
Garbage collection support
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Varios
Original:
Miscellaneous
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(C++11)
(C++11)
C Library
Original:
C Library
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std :: unique_ptr
Las funciones miembro
Original:
Member functions
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Modificadores
Original:
Modifiers
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Los observadores
Original:
Observers
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unique_ptr::operator[]
Terceros funciones
Original:
Non-member functions
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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';
    }
}

Salida:

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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(función miembro público) [editar]